Cherrypy - Reciving Json Data 404, 'missing Parameters'

I'm making my own site from scratch using Cherrypy Postgresql. I am a beginner with Python and Javascript but I am very enthusiastic about learning those two programming languages.

Solution 1:

The AJAX data you'll receive in in your login function is not contained in the parameter dataString (actually, you will not get any parameter) but in cherrypy.request.json.

Thus you should change your login function as follows:

@cherrypy.expose
@cherrypy.tools.json_in()
def login(self):
    json_obj = cherrypy.request.json
    ...

Note that you will receive an actual object (dict / list) based on the AJAX parameters, not a string.

Another note: cherrypy.request.json is only filled if you've set the decorator @cherrypy.tools.json_in() (as you already did).