How to Access Query Strings in Flask Routes?

Accessing Query Strings in Flask Routes

In Flask, accessing query strings and parameters isn't immediately evident from the documentation. However, it's a crucial aspect for retrieving data from user requests.

Consider the route /data defined below:

<code class="python">@app.route('/data')
def data():
    # query_string = ???
    return render_template('data.html')</code>

To access the query string or parameters within such routes, utilize request.args. For instance, if a request includes ?abc=123, you can retrieve this query string as follows:

<code class="python">from flask import request

@app.route('/data')
def data():
    query_string = request.args.to_dict()
    abc_value = query_string.get('abc')</code>

Alternatively, you can access individual parameters directly:

<code class="python">@app.route('/data')
def data():
    # get the value of the 'user' parameter
    user = request.args.get('user')</code>

By utilizing request.args, you gain access to the query string and its associated parameters within Flask routes, empowering you to work with user-provided data effectively.

The above is the detailed content of How to Access Query Strings in Flask Routes?. For more information, please follow other related articles on the PHP Chinese website!