How to pass 2 variables using json dumps to an ajax function? - ajax

Question

I want to pass two variable: scenario_name and scenario_id from my view to my ajax function in the html code.
So basically in the database, each Organization can have multiple scenarios. The organization and scenario models have 2 fields each: an id field and a name field.
And my other doubt is, once I pass it to ajax, how do I access the variables passed?
my views.py
from django.shortcuts import render, redirect
from Organization.models import Organization
from django.http import HttpResponse
from Scenario.models import Scenario
import json
from django.core import serializers
def alertindex(request):
return render(request, 'alertindex.html', {
'Organization': Organization.objects.all(),
})
def get_scenario(request):
org_id = request.GET.get('org_id')
organization = Organization.objects.get(pk=int(org_id))
scenario = organization.scenario_set.all()
scenarios = serializers.serialize("json", scenario)
return scenarios
urls.py
from . import views
from django.conf.urls import url
urlpatterns = [
# Add alert url
url(r'^$', views.alertindex, name='alertindex'),
# Bind data in scenario drop down
url(r'^/Scenario$', views.get_scenario, name='Get_Scenario'),
]
my ajax function
var orgID = $(this).val();
var scenarios = '{{ scenarios }}'
$.ajax({
type: "GET",
url: "{% url 'Get_Scenario' %}",
data: { org_id: orgID},
success: function () {
var udata = "";
for (var i = 0; i < scenarios.length; i++) {
udata = udata + "<option value='"+ scenarios[i].scenario_id + "'>" + scenarios[i].scenario_name + "</option>"
$("#txtScenario").append(udata);
}
},
});
The url Get_Scenario links me to my view having the function get_scenario.
The error that I am facing is " str' object has no attribute 'get' "
Traceback:
File "/Users/anirudhchakravarthy/anaconda3/lib/python3.6/site-packages/django/core/handlers/exception.py", line 35, in inner
response = get_response(request)
File "/Users/anirudhchakravarthy/anaconda3/lib/python3.6/site-packages/django/utils/deprecation.py", line 97, in call
response = self.process_response(request, response)
File "/Users/anirudhchakravarthy/anaconda3/lib/python3.6/site-packages/django/middleware/clickjacking.py", line 26, in process_response
if response.get('X-Frame-Options') is not None:
AttributeError: 'str' object has no attribute 'get'
Any help will be greatly appreciated.

Answer 1

You can use JsonResponse. Here's sample code.
(It's better to check try/exception and send 404 when not found object)
from django.http import JsonResponse
def get_scenario(request):
org_id = request.GET.get('org_id')
# you can do your own validation
try:
organization = Organization.objects.get(pk=int(org_id))
scenario = organization.scenario_set.all()
scenarios = serializers.serialize("json", scenario)
except ObjectDoesNotExist:
data = {
'result': 'fail',
}
return JsonResponse(status=404, data)
data = {
"scenarios": scenarios,
# add more data you want
}
return JsonResponse(data)
For more information about JsonResponse, just check here