How to recover ImageField value in Django when it returns an Error?

I have a form which contains an imagefield and some other fields.

my view looks like this:

def post_view(request):
    def errorHandle(errors,form):
        return render_to_response('post_form.html', {
                'errors':errors,
                'form' : form,
        },context_instance=RequestContext(request))
    if request.method == 'POST': # If the form has been submitted...
        form = PostForm(request.POST, request.FILES) # A form bound to the POST data
        if form.is_valid(): # All validation rules pass
            #save
        else:
            errors = form.errors
            return errorHandle(errors,form)
    else:
        form = PostForm() # An unbound form
        sucess = ''
        return render_to_response('post_form.html', {
            'form': form,
        }, context_instance=RequestContext(request))

When errorHandle is called, it returns to the page with th开发者_开发问答e form, errors and the values entered except for the value entered on an ImageField.

tell me if you need to look at my form and model. thanks in advance.

I think it's normal.

Path of a client image is secure for a backend, so, it was not sent. It's an official HTTP feature.