Thermos Work Series Flask, Hammertone Blue, 1.2 L

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When the route of http://domainname/ is accessed, the client receives the response, "Hello, world!"

You can make things simpler by using environment variables. They will ensure that, no matter what machine the code runs on, it always points at the right stuff if that stuff is configured in the running environment. It also ensures that, even though you need that information to run the application, it never shows up as a hardcoded value in source control. from flask import make_response @app . route ( '/' ) def index (): resp = make_response ( render_template ( ... )) resp . set_cookie ( 'username' , 'the username' ) return resp Registered users can log in, log out, see information for their profiles, and edit their information. This is where you write the bulk of your web application code based on inputs and client requests. The controller is the central part of the Flask framework because it manages and changes the view and model based on client input to update what information is presented. The Flask viewThe application is running locally on the URL http://127.0.0.1:5000/, 127.0.0.1 is the IP that represents your machine’s localhost and :5000 is the port number. In the Integrated Terminal, run the app by entering python -m flask run, which runs the Flask development server. The development server looks for app.py by default. When you run Flask, you should see output similar to the following: (.venv) D: \p y \\ hello_flask>python -m flask run * Environment: production WARNING: Do not use the development server in a production environment. Use a production WSGI server instead. * Debug mode: off * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit) Django web apps manage data and communicate with databases through Python objects called models. For example, the data structure used in the web app is defined by the model, which can define characteristics like size, default values, and label texts for online forms. You display the title using a literal variable delimiter ( {{ ... }}). Remember that post will be a dictionary-like object, so you can access the post title with post['title']. You also display the post creation date using the same method. The create() view function currently does only one thing: render a template called create.html when it receives a regular GET request. You will now create this template, then edit the function to handle POST requests in the next step.

def get_post (post_id ) : conn = get_db_connection ( ) post = conn .execute ( 'SELECT * FROM posts WHERE id = ?' , (post_id , ) ) .fetchone ( ) conn .close ( ) if post is None : abort ( 404 ) return post . . . from markupsafe import escape @app . route ( '/user/' ) def show_user_profile ( username ): # show the user profile for that user return f 'User { escape ( username ) } ' @app . route ( '/post/' ) def show_post ( post_id ): # show the post with the given id, the id is an integer return f 'Post { post_id } ' @app . route ( '/path/' ) def show_subpath ( subpath ): # show the subpath after /path/ return f 'Subpath { escape ( subpath ) } 'If you’re familiar with Python and looking to branch into web development, learning Django is a good place to start. Django offers some of the most complete and detailed documentation and tutorials. Plus, many cities have Django-specific support groups if you prefer to connect locally. Open this folder in VS Code by navigating to the folder in a terminal and running code ., or by running VS Code and using the File> Open Folder command. In the example above, when the app is running and accessed at http://domainname/, a user will receive "Hello, World!" as a response. Connecting the database in Flask In this new view function, you add a variable rule to specify that the part after the slash ( /) is a positive integer (marked with the int converter) that you need to access in your view function. Flask recognizes this and passes its value to the post_id keyword argument of your post() view function. You then use the get_post() function to get the blog post associated with the specified ID and store the result in the post variable, which you pass to a post.html template that you’ll soon create.