Question

我试图找出如何在Django中使用inlineformset_factory创建的特定字段上对内联表单进行排序。我知道可以添加一个“订单”列，允许用户指定排序顺序，但是我已经有了一个我要排序的字段。

LumFormSet = inlineformset_factory(Project, Luminaire, can_delete=True, 
    fields=('lumref', 'lummodel', 'manufacturer', 'lamptype'))

生成formset类。

lumformset = LumFormSet(instance=project)

为实例生成formset。

我想对lumref字段（这是一个十进制字段）进行排序。

Answer 1

我们可以为InlineFormSets提供自定义查询集：

>>> custom_qs = queryset=Book.objects.order_by('-title')
>>> formset = AuthorBooksFormSet(instance=author, queryset=custom_qs)
>>> for form in formset.forms:
...     print form.as_p()
<p><label for="id_book_set-0-title">Title:</label> <input id="id_book_set-0-title" type="text" name="book_set-0-title" value="Les Fleurs du Mal" maxlength="100" /><input type="hidden" name="book_set-0-author" value="1" id="id_book_set-0-author" /><input type="hidden" name="book_set-0-id" value="1" id="id_book_set-0-id" /></p>
<p><label for="id_book_set-1-title">Title:</label> <input id="id_book_set-1-title" type="text" name="book_set-1-title" value="Le Spleen de Paris" maxlength="100" /><input type="hidden" name="book_set-1-author" value="1" id="id_book_set-1-author" /><input type="hidden" name="book_set-1-id" value="2" id="id_book_set-1-id" /></p>
<p><label for="id_book_set-2-title">Title:</label> <input id="id_book_set-2-title" type="text" name="book_set-2-title" value="Flowers of Evil" maxlength="100" /><input type="hidden" name="book_set-2-author" value="1" id="id_book_set-2-author" /><input type="hidden" name="book_set-2-id" value="5" id="id_book_set-2-id" /></p>
<p><label for="id_book_set-3-title">Title:</label> <input id="id_book_set-3-title" type="text" name="book_set-3-title" maxlength="100" /><input type="hidden" name="book_set-3-author" value="1" id="id_book_set-3-author" /><input type="hidden" name="book_set-3-id" id="id_book_set-3-id" /></p>
<p><label for="id_book_set-4-title">Title:</label> <input id="id_book_set-4-title" type="text" name="book_set-4-title" maxlength="100" /><input type="hidden" name="book_set-4-author" value="1" id="id_book_set-4-author" /><input type="hidden" name="book_set-4-id" id="id_book_set-4-id" /></p>
>>> data = {
...     'book_set-TOTAL_FORMS': '5', # the number of forms rendered
...     'book_set-INITIAL_FORMS': '3', # the number of forms with initial data
...     'book_set-0-title': 'Les Fleurs du Mal',
...     'book_set-1-title': 'Le Spleen de Paris',
...     'book_set-2-title': 'Flowers of Evil',
...     'book_set-3-title': 'Revue des deux mondes',
...     'book_set-4-title': '',
... }
>>> formset = AuthorBooksFormSet(data, instance=author, queryset=custom_qs)
>>> formset.is_valid()
True
>>> custom_qs = queryset=Book.objects.filter(title__startswith='F')
>>> formset = AuthorBooksFormSet(instance=author, queryset=custom_qs)
>>> for form in formset.forms:
...     print form.as_p()
<p><label for="id_book_set-0-title">Title:</label> <input id="id_book_set-0-title" type="text" name="book_set-0-title" value="Flowers of Evil" maxlength="100" /><input type="hidden" name="book_set-0-author" value="1" id="id_book_set-0-author" /><input type="hidden" name="book_set-0-id" value="5" id="id_book_set-0-id" /></p>
<p><label for="id_book_set-1-title">Title:</label> <input id="id_book_set-1-title" type="text" name="book_set-1-title" maxlength="100" /><input type="hidden" name="book_set-1-author" value="1" id="id_book_set-1-author" /><input type="hidden" name="book_set-1-id" id="id_book_set-1-id" /></p>
<p><label for="id_book_set-2-title">Title:</label> <input id="id_book_set-2-title" type="text" name="book_set-2-title" maxlength="100" /><input type="hidden" name="book_set-2-author" value="1" id="id_book_set-2-author" /><input type="hidden" name="book_set-2-id" id="id_book_set-2-id" /></p>
>>> data = {
...     'book_set-TOTAL_FORMS': '3', # the number of forms rendered
...     'book_set-INITIAL_FORMS': '1', # the number of forms with initial data
...     'book_set-0-title': 'Flowers of Evil',
...     'book_set-1-title': 'Revue des deux mondes',
...     'book_set-2-title': '',
... }
>>> formset = AuthorBooksFormSet(data, instance=author, queryset=custom_qs)
>>> formset.is_valid()
True

如何在Django中对一组内联表单进行排序

1 个答案: