How to get a JSON Object in Python (Flask Framework)

Question

How to get a JSON Object in Python (Flask Framework). Below is my code snippet `

var hotel=$( "#listHotel option:selected" ).val();      
        if(hotel!="select")
        {       
        $.ajax({
            url: '/getHotels',
            data: {'hotel':hotel},          
            type: 'POST',
            success: function(response){
                alert(response);
                var r= JSON.parse(response);                
                var rating =r.message               
                $("#rate").html("Ratings : "+rating);
                $("#rate").show('slow');                
                console.log(response);
            },
            error: function(error){
                alert(response);
                console.log(error);
              }
          });
        }`

How can I get the JSON value hotel in my Python script Flask Framework

from flask import Flask, render_template, json, request
app = Flask(__name__)

@app.route('/')
def main():
    return render_template('index.html')
@app.route('/getHotels',methods=['POST','GET'])
def getHotels():     
    try:        
        _hotel=request.POST['hotel']
        print _hotel

this is my code in Python

You are not sending JSON, so there is no JSON for Flask to get. — Daniel Roseman
– Daniel Roseman, Commented Jul 16, 2015 at 7:57
did u try anything in flask...if you do..then would you mind to show them here? — Ja8zyjits
– Ja8zyjits, Commented Jul 16, 2015 at 7:57

doru · Accepted Answer · 2015-07-16 14:48:04Z

4

In your javascript transform the data to JSON and set the contentType to "application/json":

data: JSON.stringify({'hotel':hotel}),
contentType : "application/json",

In your flask function get the JSON using request.json:

@app.route('/getHotels')
def getHotels():
    hotel = request.json['hotel']
    .....

edited Jul 16, 2015 at 14:48

answered Jul 16, 2015 at 7:56

doru

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