我正在尝试为我的一个班级制作一个搜索表。表单的模型是:
from django import forms
from django.forms import CharField, ModelMultipleChoiceField, ModelChoiceField
from books.models import Book, Author, Category
class SearchForm(forms.ModelForm):
authors = ModelMultipleChoiceField(queryset=Author.objects.all(),required=False)
category = ModelChoiceField (queryset=Category.objects.all(),required=False)
class Meta:
model = Book
fields = ["title"]
我使用的视图是:
from django.shortcuts import render_to_response, redirect, get_object_or_404
from django.template import RequestContext
from books.models import Book,Author
from books.forms import BookForm, SearchForm
from users.models import User
def search_book(request):
if request.method == "POST":
form = SearchForm(request.POST)
if form.is_valid():
form = SearchForm(request.POST)
stitle = form.cleaned_data['title']
sauthor = form.cleaned_data['author']
scategory = form.cleaned_data['category']
else:
form = SearchForm()
return render_to_response("books/create.html", {
"form": form,
}, context_instance=RequestContext(request))
表单显示得很好,但是当我提交它时,我得到一个错误:'SearchForm' object has no attribute 'cleaned_data'
我不知道发生了什么事,有人能帮帮我吗?谢谢!
发布于 2010-11-30 06:27:42
由于某些原因,您在检查is_valid()
之后重新实例化表单。表单只有在调用了is_valid()
时才会获得cleaned_data
属性,而您还没有在这个新的第二个实例上调用它。
只要去掉第二个form = SearchForm(request.POST)
,一切都会好起来的。
发布于 2010-11-30 06:25:18
我会像这样写代码:
def search_book(request):
form = SearchForm(request.POST or None)
if request.method == "POST" and form.is_valid():
stitle = form.cleaned_data['title']
sauthor = form.cleaned_data['author']
scategory = form.cleaned_data['category']
return HttpResponseRedirect('/thanks/')
return render_to_response("books/create.html", {
"form": form,
}, context_instance=RequestContext(request))
就像documentation一样。
发布于 2014-05-09 21:45:04
有时,如果我们忘记了
return self.cleaned_data
在django forms的干净函数中,我们将不会有任何数据,尽管form.is_valid()
将返回True
。
https://stackoverflow.com/questions/4308527
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