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Flask blueprint injection11/23/2023 ![]() ![]() status_code = 200 assert b "Results found: 0" in response. get ( url_for ( "example.index" )) assert response. override ( github_client_mock ): response = client. Mock ( spec = Github ) github_client_mock. data def test_index_no_results ( client, app ): github_client_mock = mock. data assert b "owner2-avatar-url" in response. data assert b "owner2-login" in response. data assert b "owner1-avatar-url" in response. data assert b "owner1-login" in response. status_code = 200 assert b "Results found: 2" in response. Mock ( login = "owner2-login", html_url = "owner2-url", avatar_url = "owner2-avatar-url", ), get_commits = mock. Mock ( html_url = "repo2-url", name = "repo2-name", owner = mock. Here’s the list of dependencies we will use flask2.1.2 dependency-injector4.39.1 requests2.27.1 pytest7.1.2 We will begin by creating a model for a todo-item. unwire () def test_index ( client, app ): github_client_mock = mock. This client will be injected to a service in our application, and later we will also unit test it by mocking. fixture def app (): app = create_app () yield app app. Have a routes.py and call app."""Tests module.""" from unittest import mock import pytest from github import Github from flask import url_for from. The source code is available on the Github. The example application helps to search for repositories on the Github. > SITEMAP has disadvantages For big apps, its nice to have a single routes.py file where you can see all urls the app supports, and which methods Flask blueprints example This example shows how to use Dependency Injector with Flask blueprints. Rather than calling app.before_request, you can call blueprint.before_request and it will work only for that blueprint. Also (small issue) You cant add blueprint specific middleware. > BLUEPRINT are nice, but have issues: When you create a blueprint, for a sub app, you cant set error handlers. If you can solve it using simple python(decorators), solve it using Python. At least you can still use WSGI middleware. > MIDDLEWARE: Flask promotes writing middleware as decorators functions, while it looks nice, it not really useable anywhere else, and its not really a standard. Werkzeug does the same thing, except it does it more robustly. I have had this discussion with someone else before:įWIW, flask's "from flask import request" never had been a blocker for me, whereas django's injected request variable had made me write middleware to preseve requests as thread locals so that I can access it elsewhere. Any other web framework that I know does it like this.įlask's request is not global. ![]() > GLOBALS: Flask has a lot of globals (from flask import g, request, current_user, etc.) A better web handler function looks like this handle(request) -> response. Haven't used flask in some time now, but most of your objections are missing the mark. Also it promotes circular imports:įrom init import blueprint #circular import!Īssert view # ensure the handlers are initiallized The is nice to use initially, but imho for big apps it becomes messy. Or use a sitemap where you bind functions to paths.įor big apps, its nice to have a single routes.py file where you can see all urls the app supports, and which methods to handle those. They only work on app level.Īlso (small issue) You cant add blueprint specific middleware.īetter way to create 'sub apps': Use a new WSGI App. When you create a blueprint, for a sub app, you cant set error handlers. Flask is not functional, its inherently statefull with globals.įlask promotes writing middleware as decorators functions, while it looks nice, it not really useable anywhere else, and its not really a standard. Flask promotes touching the 'request' object everywhere. Any other web framework that I know does it like this. So some things i don"t like about flask:ĭisclaimer: You can architect beautiful apps in apps, its just easy todo it wrong.įlask has a lot of globals (from flask import g, request, current_user, etc.)Ī better web handler function looks like this handle(request) -> response. ![]() I worked with numerous python web frameworks, mainly webapp2 and flask. While flask is a nice framework, it has some problems. ![]()
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