You want to access the data passed into your Flask application, but when attempting to access the data using
request.data, you found that sometimes the data returned is an empty string that does not represent the data you are trying to access.
request module allows you to access the data passed into your Flask application through an HTTP request.
The data within a request can be accessed through the
request module’s properties.
These properties allow for data to be stored in the many different forms that data can be received through HTTP requests, like: query strings, form data, cookies, and more.
.data property should only be used in circumstances where the data passed into your Flask application comes with a mimetype that Flask does not handle.
Otherwise you should use the
request property that reflects the type of the data you are trying to access.
Make sure to use the
request property that best suits your data.
Here are some
request properties for common data types:
request.arg accesses the query string (the URL parameters) and returns the key/value pairs.
request.form accesses form data and returns the form parameters (if the form uploads a file however, use
request.files to access the file data).
request.cookies returns a dictionary with the cookies associated with the request.
request.json returns parsed JSON data if the
mimetype is JSON.
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