Question

我正在尝试使用django haystack创建自定义搜索表单，我只是从haystack的文档中修改：

forms.py

from django import forms
from haystack.forms import SearchForm

class DateRangeSearchForm(SearchForm):
    start_date = forms.DateField(required=False)
    end_date = forms.DateField(required=False)

   def search(self):
        # First, store the SearchQuerySet received from other processing.
        sqs = super(DateRangeSearchForm, self).search()

        # Check to see if a start_date was chosen.
        if self.cleaned_data['start_date']:
            sqs = sqs.filter(pub_date__gte=self.cleaned_data['start_date'])

        # Check to see if an end_date was chosen.
        if self.cleaned_data['end_date']:
            sqs = sqs.filter(pub_date__lte=self.cleaned_data['end_date'])

        return sqs

到：

from django import forms
from haystack.forms import HighlightedModelSearchForm

class CustomSearchForm(HighlightedModelSearchForm):
    title   = forms.CharField(max_length = 100, required = False)
    content = forms.CharField(max_length = 100, required = False)
    date_added = forms.DateField(required = False)
    post_by = forms.CharField(max_length = 100, required = False)

    def search(self):
        sqs = super(CustomSearchForm, self).search()
        if self.cleaned_data['post_by']:
            sqs = sqs.filter(content = self.cleaned_data['post_by'])
        if self.cleaned_data['title']:
            sqs = sqs.filter(content = self.cleaned_data['title'])
        if self.cleaned_data['content']:
            sqs = sqs.filter(content = self.cleaned_data['content'])
        if self.cleaned_data['date_added']:
            sqs = sqs.filter(content = self.cleaned_data['date_added']) 
        return sqs

haystack .urls：

urlpatterns = patterns('haystack.views',
    url(r'^$', search_view_factory(view_class = SearchView, form_class = CustomSearchForm), name='haystack_search'),
)

当我转到网址时，它会说：/ error /

中的AttributeError

'CustomSearchForm'对象没有属性'cleaning_data'

你能帮助我吗？ THX

然后我尝试评论搜索方法，但是当我在自定义字段中提交一个单词时，结果总是一无所获，只有当我向非自定义字段提交单词时，它才能给我想要的结果，已经尝试过了要整天理解这一点，请帮助

Answer 1

我知道这是一个有点老问题，但是为了帮助那些可能正在查看这个并想知道同样事情的人，这就是我在相同情况下工作的方式。

这些方面的东西：

...
def search(self)
    sqs=super(MyFooSearchForm, self).search()

    if self.is_valid() and self.cleaned_data['foo']:
        sqs = sqs.filter(foostuff__exact=self.cleaned_data['foo'])

    return sqs

基本上，我在self.cleaned_data ['']之前添加了'self.is_valid和' 这摆脱了我的错误。希望这会有所帮助。

所以，

def search(self):
    sqs = super(CustomSearchForm, self).search()
    if self.cleaned_data['post_by']:
        sqs = sqs.filter(content = self.cleaned_data['post_by'])
    if self.cleaned_data['title']:
        sqs = sqs.filter(content = self.cleaned_data['title'])
    if self.cleaned_data['content']:
        sqs = sqs.filter(content = self.cleaned_data['content'])
    if self.cleaned_data['date_added']:
        sqs = sqs.filter(content = self.cleaned_data['date_added']) 
    return sqs

会变成：

def search(self):
    sqs = super(CustomSearchForm, self).search()
    if self.is_valid() and self.cleaned_data['post_by']:
        sqs = sqs.filter(content = self.cleaned_data['post_by'])
    if self.is_valid() and self.cleaned_data['title']:
        sqs = sqs.filter(content = self.cleaned_data['title'])
    if self.is_valid() and self.cleaned_data['content']:
        sqs = sqs.filter(content = self.cleaned_data['content'])
    if self.is_valid() and self.cleaned_data['date_added']:
        sqs = sqs.filter(content = self.cleaned_data['date_added']) 
    return sqs

可能有更好的方法可以做到这一点，而且我是django / python的相对初学者，但它对我有用。

Answer 2

首先要调用form.is_valid（）。在调用isvalid（）方法之前，数据不会处于清除状态。因此，在验证所有字段时，如果所有字段都按照表单定义有效，则会将所有字段逐一放入其cleaned_data属性中。如果任何字段使is_valid（）为false，那么cleaned_data也将存在并包含先前验证过的数据。 >

django haystack自定义表单

2 个答案: