How can I identify requests made via AJAX in Python's Flask? How can I identify requests made via AJAX in Python's Flask? flask flask

How can I identify requests made via AJAX in Python's Flask?


Flask comes with a is_xhr attribute in the request object.

from flask import request@app.route('/', methods=['GET', 'POST'])def home_page():    if request.is_xhr:        context = controllers.get_default_context()        return render_template('home.html', **context)

Notice: This solution is deprecated and not viable anymore.


for future readers: what I do is something like below:

request_xhr_key = request.headers.get('X-Requested-With')if request_xhr_key and request_xhr_key == 'XMLHttpRequest':   #mystuff   return resultabort(404,description="only xhlhttprequest is allowed")

this will give an 404 error if the request header doesn't contain 'XMLHttpRequest' value.


There isn't any way to be certain whether a request is made by ajax.

What I found that worked for me, was to simply include a get parameter for xhr requests and simply omit the parameter on non-xhr requests.

For example:

  • XHR Request: example.com/search?q=Boots&api=1
  • Other Requests: example.com/search?q=Boots