无法弄清楚如何过滤表单集以仅显示登录用户的博客文章。表单呈现得很好,但是它允许任何用户将照片分配给任何博客文章,无论谁拥有该博客文章。如何将博文选项过滤为仅适用于登录用户?
<小时/>View .py
@login_required
def addimage(request):
user = request.user
blogposts = Blogpost.objects.filter(user=user)
print blogposts
imageformset = modelformset_factory(Image, AddImageForm,extra=1)
if request.method == "POST":
formset = imageformset(request.POST, request.FILES)
if formset.is_valid() :
for form in formset.cleaned_data:
image = form['image']
title = form['title']
blogpost = form['blogpost']
description = form['description']
photo = Image(
title = title,
image= image,
blogpost=blogpost,
description=description,
)
photo.user = request.user
photo.save()
messages.success(request, 'We did it. Pictures are on the interwebs!')
return HttpResponseRedirect("/%s/%s/" % (user, blogpost.slug))
else:
formset = imageformset()
return render_to_response('photos/add_photos.html', {
'formset' : formset,
'blogpost' : blogposts,
},
context_instance=RequestContext(request))
<小时/>
表单.py
from django import forms
from .models import *
class AddImageForm(forms.ModelForm):
class Meta:
model = Image
fields = ('image', 'title', 'blogpost', 'description')
<小时/>
Add_photos.html
{% extends "base.html" %}
{% load static %}
{% block content %}
<div>
<form action="" method="POST" enctype="multipart/form-data">{% csrf_token %}
<div id="submit"><input id="submit-btn" type="submit" value="Save"></div>
{{ formset.management_form }}
{{ formset.as_p }}
<input type="submit" value="Save">
</form>
</div>
{% endblock %}
最佳答案
看起来您的 blogpost 字段是一个外键。默认情况下,它由 django.forms.ModelChoiceField 表示。它继承自 ChoiceField,其选择是模型 QuerySet。请参阅 ModelChoiceField 的引用.
因此您想为字段的查询集属性提供自定义查询集。这在一定程度上取决于您的表单的构建方式。我发现在构造函数中最容易做到,但使用表单集工厂会使这有点棘手。您可以在构建表单集后尝试此操作:
formset = imageformset()
for form in formset.forms:
form.fields['blogpost'].queryset = Blogpost.objects.filter(user=user)
我认为您还需要在代码的 request.method == 'POST' 分支中调用 formset.is_valid() 之前执行此操作。
关于python - Django Formset 不会按用户对象进行过滤,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/25597497/