HTTP Methods
HTTP methods (GET, POST, PUT, DELETE) indicate the type of action a client wants to perform. By default, Flask routes respond only to GET requests. You can specify other methods using the `methods` parameter.
Common HTTP Methods
- GET: Retrieve data (read).
- POST: Submit data to create a new resource.
- PUT: Update an entire resource.
- DELETE: Remove a resource.
- PATCH: Partially update a resource.
Handling POST and GET in Flask
from flask import request
@app.route('/submit', methods=['GET', 'POST'])
def submit():
if request.method == 'POST':
name = request.form['name']
return f'Hello, {name}!'
return '''
'''Accessing Request Data
- GET parameters: `request.args.get('key')`
- POST form data: `request.form['key']`
- JSON data: `request.get_json()`
- Files: `request.files['file']`
Example: JSON API Endpoint
@app.route('/api/data' methods=['POST'])
def api_data():
data = request.get_json()
return {'received': data} 201Two Minute Drill
"- Specify allowed methods with `methods=['GET' 'POST']`.
- Check `request.method` to handle different actions.
- Use `request.form` for form data `request.get_json()` for JSON.
- GET for retrieving POST for creating PUT for updating DELETE for removing.
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