我试图将服务器端Ajax响应脚本转换为Django HttpResponse,但显然它不起作用。
这是服务器端脚本:
/* RECEIVE VALUE */
$validateValue=$_POST['validateValue'];
$validateId=$_POST['validateId'];
$validateError=$_POST['validateError'];
/* RETURN VALUE */
$arrayToJs = array();
$arrayToJs[0] = $validateId;
$arrayToJs[1] = $validateError;
if($validateValue =="Testuser"){ // Validate??
$arrayToJs[2] = "true"; // RETURN TRUE
echo '{"jsonValidateReturn":'.json_encode($arrayToJs).'}'; // RETURN ARRAY WITH success
}
else{
for($x=0;$x<1000000;$x++){
if($x == 990000){
$arrayToJs[2] = "false";
echo '{"jsonValidateReturn":'.json_encode($arrayToJs).'}'; // RETURNS ARRAY WITH ERROR.
}
}
}
这是转换后的代码
def validate_user(request):
if request.method == 'POST':
vld_value = request.POST.get('validateValue')
vld_id = request.POST.get('validateId')
vld_error = request.POST.get('validateError')
array_to_js = [vld_id, vld_error, False]
if vld_value == "TestUser":
array_to_js[2] = True
x = simplejson.dumps(array_to_js)
return HttpResponse(x)
else:
array_to_js[2] = False
x = simplejson.dumps(array_to_js)
error = 'Error'
return render_to_response('index.html',{'error':error},context_instance=RequestContext(request))
return render_to_response('index.html',context_instance=RequestContext(request))
我使用simplejson来编码Python列表(因此它将返回一个JSON数组)。我还不能解决这个问题。但是我想我对“回声”做错了什么。
Django代码views.py:
def view(request):
if request.method == 'POST':
print request.body
data = request.body
return HttpResponse(json.dumps(data))
HTML代码view.html:
<!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("#mySelect").change(function(){
selected = $("#mySelect option:selected").text()
$.ajax({
type: 'POST',
dataType: 'json',
contentType: 'application/json; charset=utf-8',
url: '/view/',
data: {
'fruit': selected
},
success: function(result) {
document.write(result)
}
});
});
});
</script>
</head>
<body>
<form>
{{data}}
<br>
Select your favorite fruit:
<select id="mySelect">
<option value="apple" selected >Select fruit</option>
<option value="apple">Apple</option>
<option value="orange">Orange</option>
<option value="pineapple">Pineapple</option>
<option value="banana">Banana</option>
</select>
</form>
</body>
</html>
这在Django 1.7或更高版本中非常方便,因为你有JsonResponse类,它是HttpResponse的子类。
from django.http import JsonResponse
def profile(request):
data = {
'name': 'Raghav',
'location': 'India',
'is_active': False,
'count': 28
}
return JsonResponse(data)
对于旧版本的Django,必须使用HttpResponse对象。
import json
from django.http import HttpResponse
def profile(request):
data = {
'name': 'Raghav',
'location': 'India',
'is_active': False,
'count': 28
}
dump = json.dumps(data)
return HttpResponse(dump, content_type='application/json')
如何使用谷歌应用程序引擎与ajax (json)?
用JQuery编写Javascript代码:
$.ajax({
url: '/ajax',
dataType : 'json',
cache: false,
success: function(data) {
alert('Load was performed.'+data.ajax_resp);
}
});
Python代码
class Ajax(webapp2.RequestHandler):
def get(self):
my_response = {'ajax_resp':'Hello, webapp World!'}
datos = json.dumps(my_response)
self.response.headers.add_header('content-type', 'application/json', charset='utf-8')
self.response.out.write(datos)