[英]Django Haystack Custom Search Form
我有一个基本的 django-haystack SearchForm 工作正常,但现在我正在尝试创建一个自定义搜索表单,其中包含几个要过滤的额外字段。
我遵循了关于创建自定义表单和视图的 Haystack 文档,但是当我尝试查看表单时,我只能得到错误:
ValueError at /search/calibration/
The view assetregister.views.calibration_search didn't return an HttpResponse object. It returned None instead.
不应该基于 SearchForm 来处理返回 HttpResponse 对象吗?
表格.py
from django import forms
from haystack.forms import SearchForm
class CalibrationSearch(SearchForm):
calibration_due_before = forms.DateField(required=False)
calibration_due_after = forms.DateField(required=False)
def search(self):
#First we need to store SearchQuerySet recieved after / from any other processing that's going on
sqs = super(CalibrationSearch, self).search()
if not self.is_valid():
return self.no_query_found()
#check to see if any date filters used, if so apply filter
if self.cleaned_data['calibration_due_before']:
sqs = sqs.filter(calibration_date_next__lte=self.cleaned_data['calibration_due_before'])
if self.cleaned_data['calibration_due_after']:
sqs = sqs.filter(calibration_date_next__gte=self.cleaned_data['calibration_due_after'])
return sqs
视图.py
from .forms import CalibrationSearch
from haystack.generic_views import SearchView
from haystack.query import SearchQuerySet
def calibration_search(SearchView):
template_name = 'search/search.html'
form_class = CalibrationSearch
queryset = SearchQuerySet().filter(requires_calibration=True)
def get_queryset(self):
queryset = super(calibration_search, self).get_queryset()
return queryset
网址.py
from django.conf.urls import include, url
from . import views
urlpatterns = [
....
url(r'^search/calibration/', views.calibration_search, name='calibration_search'),
....
]
Haystack 的SearchView
是基于类的视图,添加 urls 条目时必须调用.as_view()
类方法。
url(r'^search/calibration/', views.calibration_search.as_view(), name='calibration_search'),
这对我有帮助。
“去掉search.html模板上的”page”前缀就成功了,是一个很好的临时解决方案。但是,当需要对结果进行分页时就成了一个问题。所以环顾四周后,解决方案是使用“page_obj”前缀而不是“page”,一切都按预期工作。似乎问题在于 haystack-tutorial 假设页面对象称为“page”,而某些版本的 django 称为“page_obj”?我敢肯定有一个更好的答案——我只是报告我有限的发现。”
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