How Do I Access Data Sent to My Flask Application?

Accessing Data Sent to a Flask Application

In Flask, the request.data attribute contains the raw request data, which is commonly used as a fallback when Flask does not handle the mimetype. However, it may appear empty in many scenarios.

To access request data effectively, utilize the following attributes:

• request.args: Key-value pairs from the URL query string
• request.form: Key-value pairs from HTML post forms or non-JSON-encoded JavaScript requests
• request.files: Files uploaded in the request
• request.values: Combines args and form (args takes precedence if keys overlap)
• request.json: Parsed JSON data (requires application/json content type or force=True in request.get_json())

For example, to access the value of the "name" parameter sent via a form, you can use:

request.form["name"]  # If you know the key exists
request.form.get("name")  # If the key might not exist

To handle multiple values for the same key, use getlist:

request.form.getlist("name") 

By leveraging these attributes, you can efficiently access the data sent to your Flask app, regardless of whether it's in the query string, form data, files, or JSON format.

The above is the detailed content of How Do I Access Data Sent to My Flask Application?. For more information, please follow other related articles on the PHP Chinese website!