9bbeb35c08
Fixed an issue that prevented the password reset tokens from working. Added email templates for password reset success and new account creation. Added more dynamic email template support.
626 lines
24 KiB
Python
626 lines
24 KiB
Python
from __future__ import annotations
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import os
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import typing as t
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from collections import defaultdict
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from functools import update_wrapper
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from . import typing as ft
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from .scaffold import _endpoint_from_view_func
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from .scaffold import _sentinel
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from .scaffold import Scaffold
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from .scaffold import setupmethod
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if t.TYPE_CHECKING: # pragma: no cover
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from .app import Flask
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DeferredSetupFunction = t.Callable[["BlueprintSetupState"], t.Callable]
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T_after_request = t.TypeVar("T_after_request", bound=ft.AfterRequestCallable)
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T_before_request = t.TypeVar("T_before_request", bound=ft.BeforeRequestCallable)
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T_error_handler = t.TypeVar("T_error_handler", bound=ft.ErrorHandlerCallable)
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T_teardown = t.TypeVar("T_teardown", bound=ft.TeardownCallable)
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T_template_context_processor = t.TypeVar(
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"T_template_context_processor", bound=ft.TemplateContextProcessorCallable
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)
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T_template_filter = t.TypeVar("T_template_filter", bound=ft.TemplateFilterCallable)
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T_template_global = t.TypeVar("T_template_global", bound=ft.TemplateGlobalCallable)
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T_template_test = t.TypeVar("T_template_test", bound=ft.TemplateTestCallable)
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T_url_defaults = t.TypeVar("T_url_defaults", bound=ft.URLDefaultCallable)
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T_url_value_preprocessor = t.TypeVar(
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"T_url_value_preprocessor", bound=ft.URLValuePreprocessorCallable
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)
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class BlueprintSetupState:
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"""Temporary holder object for registering a blueprint with the
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application. An instance of this class is created by the
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:meth:`~flask.Blueprint.make_setup_state` method and later passed
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to all register callback functions.
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"""
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def __init__(
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self,
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blueprint: Blueprint,
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app: Flask,
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options: t.Any,
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first_registration: bool,
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) -> None:
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#: a reference to the current application
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self.app = app
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#: a reference to the blueprint that created this setup state.
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self.blueprint = blueprint
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#: a dictionary with all options that were passed to the
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#: :meth:`~flask.Flask.register_blueprint` method.
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self.options = options
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#: as blueprints can be registered multiple times with the
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#: application and not everything wants to be registered
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#: multiple times on it, this attribute can be used to figure
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#: out if the blueprint was registered in the past already.
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self.first_registration = first_registration
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subdomain = self.options.get("subdomain")
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if subdomain is None:
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subdomain = self.blueprint.subdomain
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#: The subdomain that the blueprint should be active for, ``None``
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#: otherwise.
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self.subdomain = subdomain
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url_prefix = self.options.get("url_prefix")
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if url_prefix is None:
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url_prefix = self.blueprint.url_prefix
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#: The prefix that should be used for all URLs defined on the
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#: blueprint.
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self.url_prefix = url_prefix
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self.name = self.options.get("name", blueprint.name)
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self.name_prefix = self.options.get("name_prefix", "")
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#: A dictionary with URL defaults that is added to each and every
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#: URL that was defined with the blueprint.
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self.url_defaults = dict(self.blueprint.url_values_defaults)
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self.url_defaults.update(self.options.get("url_defaults", ()))
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def add_url_rule(
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self,
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rule: str,
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endpoint: str | None = None,
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view_func: t.Callable | None = None,
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**options: t.Any,
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) -> None:
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"""A helper method to register a rule (and optionally a view function)
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to the application. The endpoint is automatically prefixed with the
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blueprint's name.
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"""
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if self.url_prefix is not None:
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if rule:
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rule = "/".join((self.url_prefix.rstrip("/"), rule.lstrip("/")))
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else:
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rule = self.url_prefix
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options.setdefault("subdomain", self.subdomain)
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if endpoint is None:
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endpoint = _endpoint_from_view_func(view_func) # type: ignore
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defaults = self.url_defaults
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if "defaults" in options:
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defaults = dict(defaults, **options.pop("defaults"))
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self.app.add_url_rule(
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rule,
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f"{self.name_prefix}.{self.name}.{endpoint}".lstrip("."),
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view_func,
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defaults=defaults,
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**options,
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)
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class Blueprint(Scaffold):
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"""Represents a blueprint, a collection of routes and other
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app-related functions that can be registered on a real application
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later.
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A blueprint is an object that allows defining application functions
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without requiring an application object ahead of time. It uses the
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same decorators as :class:`~flask.Flask`, but defers the need for an
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application by recording them for later registration.
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Decorating a function with a blueprint creates a deferred function
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that is called with :class:`~flask.blueprints.BlueprintSetupState`
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when the blueprint is registered on an application.
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See :doc:`/blueprints` for more information.
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:param name: The name of the blueprint. Will be prepended to each
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endpoint name.
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:param import_name: The name of the blueprint package, usually
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``__name__``. This helps locate the ``root_path`` for the
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blueprint.
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:param static_folder: A folder with static files that should be
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served by the blueprint's static route. The path is relative to
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the blueprint's root path. Blueprint static files are disabled
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by default.
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:param static_url_path: The url to serve static files from.
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Defaults to ``static_folder``. If the blueprint does not have
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a ``url_prefix``, the app's static route will take precedence,
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and the blueprint's static files won't be accessible.
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:param template_folder: A folder with templates that should be added
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to the app's template search path. The path is relative to the
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blueprint's root path. Blueprint templates are disabled by
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default. Blueprint templates have a lower precedence than those
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in the app's templates folder.
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:param url_prefix: A path to prepend to all of the blueprint's URLs,
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to make them distinct from the rest of the app's routes.
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:param subdomain: A subdomain that blueprint routes will match on by
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default.
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:param url_defaults: A dict of default values that blueprint routes
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will receive by default.
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:param root_path: By default, the blueprint will automatically set
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this based on ``import_name``. In certain situations this
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automatic detection can fail, so the path can be specified
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manually instead.
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.. versionchanged:: 1.1.0
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Blueprints have a ``cli`` group to register nested CLI commands.
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The ``cli_group`` parameter controls the name of the group under
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the ``flask`` command.
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.. versionadded:: 0.7
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"""
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_got_registered_once = False
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def __init__(
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self,
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name: str,
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import_name: str,
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static_folder: str | os.PathLike | None = None,
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static_url_path: str | None = None,
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template_folder: str | os.PathLike | None = None,
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url_prefix: str | None = None,
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subdomain: str | None = None,
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url_defaults: dict | None = None,
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root_path: str | None = None,
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cli_group: str | None = _sentinel, # type: ignore
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):
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super().__init__(
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import_name=import_name,
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static_folder=static_folder,
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static_url_path=static_url_path,
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template_folder=template_folder,
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root_path=root_path,
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)
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if not name:
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raise ValueError("'name' may not be empty.")
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if "." in name:
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raise ValueError("'name' may not contain a dot '.' character.")
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self.name = name
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self.url_prefix = url_prefix
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self.subdomain = subdomain
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self.deferred_functions: list[DeferredSetupFunction] = []
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if url_defaults is None:
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url_defaults = {}
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self.url_values_defaults = url_defaults
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self.cli_group = cli_group
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self._blueprints: list[tuple[Blueprint, dict]] = []
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def _check_setup_finished(self, f_name: str) -> None:
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if self._got_registered_once:
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raise AssertionError(
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f"The setup method '{f_name}' can no longer be called on the blueprint"
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f" '{self.name}'. It has already been registered at least once, any"
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" changes will not be applied consistently.\n"
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"Make sure all imports, decorators, functions, etc. needed to set up"
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" the blueprint are done before registering it."
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)
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@setupmethod
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def record(self, func: t.Callable) -> None:
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"""Registers a function that is called when the blueprint is
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registered on the application. This function is called with the
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state as argument as returned by the :meth:`make_setup_state`
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method.
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"""
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self.deferred_functions.append(func)
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@setupmethod
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def record_once(self, func: t.Callable) -> None:
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"""Works like :meth:`record` but wraps the function in another
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function that will ensure the function is only called once. If the
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blueprint is registered a second time on the application, the
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function passed is not called.
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"""
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def wrapper(state: BlueprintSetupState) -> None:
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if state.first_registration:
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func(state)
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self.record(update_wrapper(wrapper, func))
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def make_setup_state(
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self, app: Flask, options: dict, first_registration: bool = False
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) -> BlueprintSetupState:
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"""Creates an instance of :meth:`~flask.blueprints.BlueprintSetupState`
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object that is later passed to the register callback functions.
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Subclasses can override this to return a subclass of the setup state.
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"""
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return BlueprintSetupState(self, app, options, first_registration)
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@setupmethod
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def register_blueprint(self, blueprint: Blueprint, **options: t.Any) -> None:
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"""Register a :class:`~flask.Blueprint` on this blueprint. Keyword
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arguments passed to this method will override the defaults set
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on the blueprint.
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.. versionchanged:: 2.0.1
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The ``name`` option can be used to change the (pre-dotted)
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name the blueprint is registered with. This allows the same
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blueprint to be registered multiple times with unique names
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for ``url_for``.
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.. versionadded:: 2.0
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"""
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if blueprint is self:
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raise ValueError("Cannot register a blueprint on itself")
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self._blueprints.append((blueprint, options))
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def register(self, app: Flask, options: dict) -> None:
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"""Called by :meth:`Flask.register_blueprint` to register all
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views and callbacks registered on the blueprint with the
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application. Creates a :class:`.BlueprintSetupState` and calls
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each :meth:`record` callback with it.
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:param app: The application this blueprint is being registered
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with.
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:param options: Keyword arguments forwarded from
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:meth:`~Flask.register_blueprint`.
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.. versionchanged:: 2.3
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Nested blueprints now correctly apply subdomains.
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.. versionchanged:: 2.1
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Registering the same blueprint with the same name multiple
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times is an error.
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.. versionchanged:: 2.0.1
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Nested blueprints are registered with their dotted name.
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This allows different blueprints with the same name to be
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nested at different locations.
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.. versionchanged:: 2.0.1
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The ``name`` option can be used to change the (pre-dotted)
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name the blueprint is registered with. This allows the same
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blueprint to be registered multiple times with unique names
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for ``url_for``.
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"""
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name_prefix = options.get("name_prefix", "")
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self_name = options.get("name", self.name)
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name = f"{name_prefix}.{self_name}".lstrip(".")
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if name in app.blueprints:
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bp_desc = "this" if app.blueprints[name] is self else "a different"
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existing_at = f" '{name}'" if self_name != name else ""
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raise ValueError(
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f"The name '{self_name}' is already registered for"
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f" {bp_desc} blueprint{existing_at}. Use 'name=' to"
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f" provide a unique name."
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)
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first_bp_registration = not any(bp is self for bp in app.blueprints.values())
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first_name_registration = name not in app.blueprints
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app.blueprints[name] = self
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self._got_registered_once = True
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state = self.make_setup_state(app, options, first_bp_registration)
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if self.has_static_folder:
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state.add_url_rule(
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f"{self.static_url_path}/<path:filename>",
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view_func=self.send_static_file,
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endpoint="static",
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)
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# Merge blueprint data into parent.
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if first_bp_registration or first_name_registration:
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def extend(bp_dict, parent_dict):
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for key, values in bp_dict.items():
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key = name if key is None else f"{name}.{key}"
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parent_dict[key].extend(values)
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for key, value in self.error_handler_spec.items():
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key = name if key is None else f"{name}.{key}"
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value = defaultdict(
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dict,
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{
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code: {
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exc_class: func for exc_class, func in code_values.items()
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}
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for code, code_values in value.items()
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},
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)
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app.error_handler_spec[key] = value
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for endpoint, func in self.view_functions.items():
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app.view_functions[endpoint] = func
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extend(self.before_request_funcs, app.before_request_funcs)
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extend(self.after_request_funcs, app.after_request_funcs)
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extend(
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self.teardown_request_funcs,
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app.teardown_request_funcs,
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)
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extend(self.url_default_functions, app.url_default_functions)
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extend(self.url_value_preprocessors, app.url_value_preprocessors)
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extend(self.template_context_processors, app.template_context_processors)
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for deferred in self.deferred_functions:
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deferred(state)
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cli_resolved_group = options.get("cli_group", self.cli_group)
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if self.cli.commands:
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if cli_resolved_group is None:
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app.cli.commands.update(self.cli.commands)
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elif cli_resolved_group is _sentinel:
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self.cli.name = name
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app.cli.add_command(self.cli)
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else:
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self.cli.name = cli_resolved_group
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app.cli.add_command(self.cli)
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for blueprint, bp_options in self._blueprints:
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bp_options = bp_options.copy()
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bp_url_prefix = bp_options.get("url_prefix")
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bp_subdomain = bp_options.get("subdomain")
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if bp_subdomain is None:
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bp_subdomain = blueprint.subdomain
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if state.subdomain is not None and bp_subdomain is not None:
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bp_options["subdomain"] = bp_subdomain + "." + state.subdomain
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elif bp_subdomain is not None:
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bp_options["subdomain"] = bp_subdomain
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elif state.subdomain is not None:
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bp_options["subdomain"] = state.subdomain
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if bp_url_prefix is None:
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bp_url_prefix = blueprint.url_prefix
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if state.url_prefix is not None and bp_url_prefix is not None:
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bp_options["url_prefix"] = (
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state.url_prefix.rstrip("/") + "/" + bp_url_prefix.lstrip("/")
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)
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elif bp_url_prefix is not None:
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bp_options["url_prefix"] = bp_url_prefix
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elif state.url_prefix is not None:
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bp_options["url_prefix"] = state.url_prefix
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bp_options["name_prefix"] = name
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blueprint.register(app, bp_options)
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@setupmethod
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def add_url_rule(
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self,
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rule: str,
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endpoint: str | None = None,
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view_func: ft.RouteCallable | None = None,
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provide_automatic_options: bool | None = None,
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**options: t.Any,
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) -> None:
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"""Register a URL rule with the blueprint. See :meth:`.Flask.add_url_rule` for
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full documentation.
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The URL rule is prefixed with the blueprint's URL prefix. The endpoint name,
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used with :func:`url_for`, is prefixed with the blueprint's name.
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"""
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if endpoint and "." in endpoint:
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raise ValueError("'endpoint' may not contain a dot '.' character.")
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if view_func and hasattr(view_func, "__name__") and "." in view_func.__name__:
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raise ValueError("'view_func' name may not contain a dot '.' character.")
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self.record(
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lambda s: s.add_url_rule(
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rule,
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endpoint,
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view_func,
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provide_automatic_options=provide_automatic_options,
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**options,
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)
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)
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@setupmethod
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def app_template_filter(
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self, name: str | None = None
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) -> t.Callable[[T_template_filter], T_template_filter]:
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"""Register a template filter, available in any template rendered by the
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application. Equivalent to :meth:`.Flask.template_filter`.
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:param name: the optional name of the filter, otherwise the
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function name will be used.
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"""
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def decorator(f: T_template_filter) -> T_template_filter:
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self.add_app_template_filter(f, name=name)
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return f
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return decorator
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@setupmethod
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def add_app_template_filter(
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self, f: ft.TemplateFilterCallable, name: str | None = None
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) -> None:
|
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"""Register a template filter, available in any template rendered by the
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application. Works like the :meth:`app_template_filter` decorator. Equivalent to
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:meth:`.Flask.add_template_filter`.
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:param name: the optional name of the filter, otherwise the
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function name will be used.
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"""
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def register_template(state: BlueprintSetupState) -> None:
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state.app.jinja_env.filters[name or f.__name__] = f
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self.record_once(register_template)
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@setupmethod
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def app_template_test(
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self, name: str | None = None
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) -> t.Callable[[T_template_test], T_template_test]:
|
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"""Register a template test, available in any template rendered by the
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application. Equivalent to :meth:`.Flask.template_test`.
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.. versionadded:: 0.10
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:param name: the optional name of the test, otherwise the
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function name will be used.
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"""
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def decorator(f: T_template_test) -> T_template_test:
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self.add_app_template_test(f, name=name)
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return f
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return decorator
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@setupmethod
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def add_app_template_test(
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self, f: ft.TemplateTestCallable, name: str | None = None
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) -> None:
|
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"""Register a template test, available in any template rendered by the
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application. Works like the :meth:`app_template_test` decorator. Equivalent to
|
|
:meth:`.Flask.add_template_test`.
|
|
|
|
.. versionadded:: 0.10
|
|
|
|
:param name: the optional name of the test, otherwise the
|
|
function name will be used.
|
|
"""
|
|
|
|
def register_template(state: BlueprintSetupState) -> None:
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|
state.app.jinja_env.tests[name or f.__name__] = f
|
|
|
|
self.record_once(register_template)
|
|
|
|
@setupmethod
|
|
def app_template_global(
|
|
self, name: str | None = None
|
|
) -> t.Callable[[T_template_global], T_template_global]:
|
|
"""Register a template global, available in any template rendered by the
|
|
application. Equivalent to :meth:`.Flask.template_global`.
|
|
|
|
.. versionadded:: 0.10
|
|
|
|
:param name: the optional name of the global, otherwise the
|
|
function name will be used.
|
|
"""
|
|
|
|
def decorator(f: T_template_global) -> T_template_global:
|
|
self.add_app_template_global(f, name=name)
|
|
return f
|
|
|
|
return decorator
|
|
|
|
@setupmethod
|
|
def add_app_template_global(
|
|
self, f: ft.TemplateGlobalCallable, name: str | None = None
|
|
) -> None:
|
|
"""Register a template global, available in any template rendered by the
|
|
application. Works like the :meth:`app_template_global` decorator. Equivalent to
|
|
:meth:`.Flask.add_template_global`.
|
|
|
|
.. versionadded:: 0.10
|
|
|
|
:param name: the optional name of the global, otherwise the
|
|
function name will be used.
|
|
"""
|
|
|
|
def register_template(state: BlueprintSetupState) -> None:
|
|
state.app.jinja_env.globals[name or f.__name__] = f
|
|
|
|
self.record_once(register_template)
|
|
|
|
@setupmethod
|
|
def before_app_request(self, f: T_before_request) -> T_before_request:
|
|
"""Like :meth:`before_request`, but before every request, not only those handled
|
|
by the blueprint. Equivalent to :meth:`.Flask.before_request`.
|
|
"""
|
|
self.record_once(
|
|
lambda s: s.app.before_request_funcs.setdefault(None, []).append(f)
|
|
)
|
|
return f
|
|
|
|
@setupmethod
|
|
def after_app_request(self, f: T_after_request) -> T_after_request:
|
|
"""Like :meth:`after_request`, but after every request, not only those handled
|
|
by the blueprint. Equivalent to :meth:`.Flask.after_request`.
|
|
"""
|
|
self.record_once(
|
|
lambda s: s.app.after_request_funcs.setdefault(None, []).append(f)
|
|
)
|
|
return f
|
|
|
|
@setupmethod
|
|
def teardown_app_request(self, f: T_teardown) -> T_teardown:
|
|
"""Like :meth:`teardown_request`, but after every request, not only those
|
|
handled by the blueprint. Equivalent to :meth:`.Flask.teardown_request`.
|
|
"""
|
|
self.record_once(
|
|
lambda s: s.app.teardown_request_funcs.setdefault(None, []).append(f)
|
|
)
|
|
return f
|
|
|
|
@setupmethod
|
|
def app_context_processor(
|
|
self, f: T_template_context_processor
|
|
) -> T_template_context_processor:
|
|
"""Like :meth:`context_processor`, but for templates rendered by every view, not
|
|
only by the blueprint. Equivalent to :meth:`.Flask.context_processor`.
|
|
"""
|
|
self.record_once(
|
|
lambda s: s.app.template_context_processors.setdefault(None, []).append(f)
|
|
)
|
|
return f
|
|
|
|
@setupmethod
|
|
def app_errorhandler(
|
|
self, code: type[Exception] | int
|
|
) -> t.Callable[[T_error_handler], T_error_handler]:
|
|
"""Like :meth:`errorhandler`, but for every request, not only those handled by
|
|
the blueprint. Equivalent to :meth:`.Flask.errorhandler`.
|
|
"""
|
|
|
|
def decorator(f: T_error_handler) -> T_error_handler:
|
|
self.record_once(lambda s: s.app.errorhandler(code)(f))
|
|
return f
|
|
|
|
return decorator
|
|
|
|
@setupmethod
|
|
def app_url_value_preprocessor(
|
|
self, f: T_url_value_preprocessor
|
|
) -> T_url_value_preprocessor:
|
|
"""Like :meth:`url_value_preprocessor`, but for every request, not only those
|
|
handled by the blueprint. Equivalent to :meth:`.Flask.url_value_preprocessor`.
|
|
"""
|
|
self.record_once(
|
|
lambda s: s.app.url_value_preprocessors.setdefault(None, []).append(f)
|
|
)
|
|
return f
|
|
|
|
@setupmethod
|
|
def app_url_defaults(self, f: T_url_defaults) -> T_url_defaults:
|
|
"""Like :meth:`url_defaults`, but for every request, not only those handled by
|
|
the blueprint. Equivalent to :meth:`.Flask.url_defaults`.
|
|
"""
|
|
self.record_once(
|
|
lambda s: s.app.url_default_functions.setdefault(None, []).append(f)
|
|
)
|
|
return f
|