Django / Jquery / Javascript -如何使用url参数预填充表单(自动填充表单)

我想给一些人发送链接比如:

http://www.example.com/form/?q=example@me.com

如果他们点击链接，它将转到页面/表单/，其中有多个字段的表单。

我想用q字符串预先填充它它将填充"email"输入

字段，在字符串"example@me.com"中指定电子邮件。

网站是在Django中完成的，想问一下实现这个的最好方法是什么

我应该使用JS, Jquery, Django?不知道从哪里开始。

想要这样的东西吗:

http://support.unbounce.com/entries/307658-Can-I-pre-populate-a-form-with-URL-parameters-VIDEO-

但是在我的网站上。有人可以帮助简单的形式和例子吗?

感谢

models.py

from django.db import models
class Example(models.Model):
    username = models.CharField(max_length=200, blank=True)
    email = models.CharField(max_length=200)
    image = models.ImageField(upload_to='profiles', blank=True)
    text = models.CharField(max_length=200, blank=True)

forms.py

from django import forms
from models import Example
class ExampleForm(forms.ModelForm):
    class Meta:
        model = Example

views.py

from django import forms
from models import Example
from forms import ExampleForm
from django.template import RequestContext, Context
from django.core.context_processors import csrf
from django.shortcuts import render_to_response
from django.shortcuts import render_to_response, get_object_or_404
from django import http
import os
import json
from django.http import HttpResponse
from django.http import HttpResponseRedirect
from django.conf import settings
def index(request):
    if request.method == "POST":
        form = ExampleForm(request.POST, request.FILES)
        if form.is_valid():
            form.save()
            return http.HttpResponseRedirect('/success/')
    else:
        form = ExampleForm()
    return render_to_response('index.html', {'title': 'Example Form', 'form': form},context_instance=RequestContext(request))

urls . py

from django.conf.urls import patterns, include, url
from django.conf import settings
from django.contrib import admin
admin.autodiscover()
urlpatterns = patterns('',
    url(r'^$', 'signup.views.index', name='index'),
    url(r'^admin/', include(admin.site.urls)),
)

索引模板

<form id='add_cat' method='post' enctype="multipart/form-data">{% csrf_token %}

    <input id="id_username" maxlength="200" name="username" type="text" placeholder="username"> 
    <input id="id_email" maxlength="200" name="email" type="text" >   
    <input id="id_picture" maxlength="200" name="picture" type="text">
    <textarea id="id_text" row="3" name="first_text" placeholder="Type something…"></textarea>
    <input id="add_cat_btn" type='submit' value="save">
 </form>                

initial = request.GET.copy()
form = MyForm(initial=initial)

def index(request):
    initial = {}
    if request.GET:
        initial = request.GET.copy()
    form = ExampleForm(initial=initial)
    if request.method == "POST":
        if request.POST:
            initial = request.POST.copy()
        form = ExampleForm(request.POST, request.FILES, initial=initial)
        if form.is_valid():
            form.save()
            return http.HttpResponseRedirect('/success/')

    return render_to_response('index.html', {'title': 'Example Form', 'form': form },context_instance=RequestContext(request))

var emailField = document.getElementById("emailfield");
emailField.value = getParameterByName("email"); // "q" in your example url

class RequestInitialFormViewMixin(object):
    """Pass Request.GET as initial values to Form"""
    def get_initial(self):
        initial = super(RequestInitialFormViewMixin, self).get_initial()
        if self.request.GET:
            for key, value in self.request.GET.items():  # QueryDict, each value is a list
                if len(value) == 1:
                    initial[key] = value[0]
                else:
                    initial[key] = value
        return initial
class MyFormView(RequestInitialFormViewMixin, FormView):
    # ...