python - In Django view,How to save array which pass from template via Ajax, to database? -

i create array in javascript , send via ajax view , can in view.now want save database(mysql) "internal error" ajax.i think ajax when post data view , django want connect mysql database, connection ajax abroted.

this template ajax:

var posturl = "http://localhost:8000/student/{{id}}/student_add_course/";  $('form[name="myform"]').submit(function(){ $.ajax({     url:posturl,     type: "post",     // stock somthing this.stock=[[1,12],[2,14],...]     data: {'stock': stock, 'counter':i,csrfmiddlewaretoken: '{{ csrf_token }}'},     error:function (xhr, textstatus, thrownerror){         alert(thrownerror);},      }) }); 

this view:

def student_add_course(request,student_id):     if request.method=='get':         context={'id':student_id , 'form':addcourseforstudentform()}         request.session['listofcourses']=[]         return render(request, 'student/addcourseforstudentform.html',context)     elif request.is_ajax():         listofcourses=course_passes.objects.order_by('-id')         id =listofcourses[0].id         counter=int(request.post.get('counter'))         in range(0,counter):             selected_course=request.post.getlist('stock[%d][]'%i)             //course_passes table.              // evrey thing until here when want save it,i error.             #a.save()         return render(request, 'student/add_course.html') 

what code problem , how should solve it? there better way this?

i'm sorry bad english.

edit:

finally understand problem in mysql side. value want insert not correct , change

a=course_passes(id+1,int(selected_course[0]),int(selected_course[1]),int(student_id))  

to

 find_user=user.objects.get(user_code=student_id,task=2)  a=course_passes(id+1,selected_course[0],selected_course[1],find_user.id) 

thanks comment.