python 如何使用 JQuery 和 Django (ajax + HttpResponse)？
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How to use JQuery and Django (ajax + HttpResponse)?
提问by TIMEX
Suppose I have an AJAX function:
假设我有一个 AJAX 函数：
function callpage{
$.ajax({
method:"get",
url:"/abc/",
data:"x="+3
beforeSend:function() {},
success:function(html){
IF HTTPRESPONSE = "1" , ALERT SUCCESS!
}
});
return false;
}
}
When my "View" executes in Django, I want to return HttpResponse('1')or '0'.
当我的“视图”在 Django 中执行时，我想返回HttpResponse('1')或'0'.
How can I know if it was successful, and then make that alert?
我怎么知道它是否成功，然后发出警报？
回答by Tom Leys
The typical workflow is to have the server return a JSON object as text, and then interpret that object in the javascript. In your case you could return the text {"httpresponse":1} from the server, or use the python json libary to generate that for you.
典型的工作流程是让服务器以文本形式返回 JSON 对象，然后在 javascript 中解释该对象。在您的情况下，您可以从服务器返回文本 {"httpresponse":1}，或使用 python json 库为您生成该文本。
JQuery has a nice json-reader (I just read the docs, so there might be mistakes in my examples)
JQuery 有一个很好的 json-reader（我只是阅读了文档，所以我的例子中可能有错误）
Javascript:
Javascript：
$.getJSON("/abc/?x="+3,
function(data){
if (data["HTTPRESPONSE"] == 1)
{
alert("success")
}
});
Django
姜戈
#you might need to easy_install this
import json
def your_view(request):
# You can dump a lot of structured data into a json object, such as
# lists and touples
json_data = json.dumps({"HTTPRESPONSE":1})
# json data is just a JSON string now.
return HttpResponse(json_data, mimetype="application/json")
An alternative View suggested by Issy (cute because it follows the DRY principle)
Issy 建议的另一种观点（很可爱，因为它遵循 DRY 原则）
def updates_after_t(request, id):
response = HttpResponse()
response['Content-Type'] = "text/javascript"
response.write(serializers.serialize("json",
TSearch.objects.filter(pk__gt=id)))
return response
回答by Peter Rowell
Rather than do all this messy, low-level ajax and JSON stuff, consider using the taconite pluginfor jQuery. You just make the call to the backend and it does the rest. It's well-documented and easy to debug -- especially if you are using Firebug with FF.
与其做这些杂乱的、低级的 ajax 和 JSON 的事情，不如考虑使用jQuery的taconite 插件。您只需调用后端，剩下的由它来完成。它有据可查且易于调试——尤其是当您将 Firebug 与 FF 一起使用时。
