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

Question

我想给一些人发送链接，说：

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

如果他们单击链接，它将转到页面/ form /，其中是具有多个字段的表单。

我想用填入“电子邮件”输入的q字符串预填充它

字符串“ example@me.com”中具有指定电子邮件的字段。

网站是在Django中完成的，想问一下实现此目标的最佳方法是什么。

我应该使用JS，Jquery，Django吗？不知道从哪里开始。

想要这样的事情：

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

但在我的网站上 有人可以用简单的形式和示例帮助吗？

谢谢

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)

表格

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>                

Answer 1

request.GET.copy()会给你一本字典，并将其作为initial字典传递。

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

它将填充表单中存在的字段。

如果你愿意GET和可以POST互换，

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))