我尝试使用下拉表格过滤基于用户的ListView。
models.py
class Post(models.Model):
...
author = models.ForeignKey('auth.User', verbose_name="Post Author")
views.py
class PostList(ListView):
model = Post
context_object_name = 'posts'
def get_queryset(self):
result = super(PostList, self).get_queryset()
author_filter = self.request.GET.get('author')
if author_filter:
result = Post.objects.filter(Q(author__icontains=author_filter))
return result
post_list.html
<form action="" method="get">
<select name="author" onchange="this.form.submit();">
<option selected="selected" disabled>Select an author</option>
{% all_author as authors %}
{% for author in authors %}
<option value="{{ author }}">{{ author }}</option>
{% endfor %}
</select>
</form>
我使用自定义模板标记来呈现all_authors
,这很好用。选择作者时,在网址中我可以看到传递的内容(/?author = xxx),但列表未被过滤。
修改
根据andi的建议,我使用django过滤器以这种方式工作。但由于某些原因,不考虑filters.py中的fields = ['field_name',]
,因此我在模板中单独选择字段。
views.py
class PostList(FilterView):
model = Post
filter_class = PostFilter
context_object_name = 'posts'
paginate_by = 50
template_name = 'directory/post_list.html'
filters.py
class PostFilter(django_filters.FilterSet):
class Meta:
model = Post
fields = ['author',]
post_list.html
<form action="" method="get">
{{ filter.form.author }}
<input type="submit" />
</form>
编辑2
我发现为什么所选字段未正确传递,需要在视图中使用filterset_class =
而不是filter_class =
答案 0 :(得分:6)
哦,这真的是老式的,容易出错和耗时的做事方式。
请试试django-filter
图书馆。并以最少的努力创建工作精细的过滤器!这样可以在保持干净代码的同时创建非常强大的过滤策略。
https://django-filter.readthedocs.io/en/latest/guide/usage.html#
低于快速草案:
过滤器:
import django_filters
class PostFilter(django_filters.FilterSet):
class Meta:
model = Post
fields = ['author']
观点:
from django_filters.views import FilterView
from somwhere.in.your.project.filtersets import PostFilter
class PostList(FilterView):
model = Post
context_object_name = 'posts'
filter_class = PostFilter
模板中的:
{% extends "base.html" %}
{% block content %}
<form action="" method="get">
{{ filter.form.as_p }}
<input type="submit" />
</form>
{% for obj in filter.qs %}
{{ obj.name }} - ${{ obj.price }}<br />
{% endfor %}
{% endblock %}
答案 1 :(得分:0)
在您的表单中,尝试更改此内容:
<option value="{{ author }}">{{ author }}</option>
到此:
<option value="{{ author.pk }}">{{ author }}</option>
然后,在您看来:
if author_filter:
result = Post.objects.filter(author_id=int(auth_filter))