mirror of
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121 lines
3.9 KiB
Python
121 lines
3.9 KiB
Python
from django import forms
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from django.db import models
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from django.utils.text import capfirst
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from django.utils.translation import ugettext_lazy as _
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from django.utils.encoding import smart_unicode
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from haystack import connections
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from haystack.constants import DEFAULT_ALIAS
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from haystack.query import SearchQuerySet, EmptySearchQuerySet
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def model_choices(using=DEFAULT_ALIAS):
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choices = [("%s.%s" % (m._meta.app_label, m._meta.module_name), capfirst(smart_unicode(m._meta.verbose_name_plural))) for m in connections[using].get_unified_index().get_indexed_models()]
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return sorted(choices, key=lambda x: x[1])
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class SearchForm(forms.Form):
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q = forms.CharField(required=False, label=_('Search'))
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def __init__(self, *args, **kwargs):
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self.searchqueryset = kwargs.pop('searchqueryset', None)
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self.load_all = kwargs.pop('load_all', False)
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if self.searchqueryset is None:
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self.searchqueryset = SearchQuerySet()
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super(SearchForm, self).__init__(*args, **kwargs)
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def no_query_found(self):
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"""
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Determines the behavior when no query was found.
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By default, no results are returned (``EmptySearchQuerySet``).
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Should you want to show all results, override this method in your
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own ``SearchForm`` subclass and do ``return self.searchqueryset.all()``.
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"""
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return EmptySearchQuerySet()
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def search(self):
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if not self.is_valid():
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return self.no_query_found()
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if not self.cleaned_data.get('q'):
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return self.no_query_found()
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sqs = self.searchqueryset.auto_query(self.cleaned_data['q'])
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if self.load_all:
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sqs = sqs.load_all()
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return sqs
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def get_suggestion(self):
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if not self.is_valid():
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return None
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return self.searchqueryset.spelling_suggestion(self.cleaned_data['q'])
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class HighlightedSearchForm(SearchForm):
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def search(self):
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return super(HighlightedSearchForm, self).search().highlight()
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class FacetedSearchForm(SearchForm):
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def __init__(self, *args, **kwargs):
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self.selected_facets = kwargs.pop("selected_facets", [])
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super(FacetedSearchForm, self).__init__(*args, **kwargs)
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def search(self):
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sqs = super(FacetedSearchForm, self).search()
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# We need to process each facet to ensure that the field name and the
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# value are quoted correctly and separately:
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for facet in self.selected_facets:
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if ":" not in facet:
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continue
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field, value = facet.split(":", 1)
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if value:
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sqs = sqs.narrow(u'%s:"%s"' % (field, sqs.query.clean(value)))
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return sqs
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class ModelSearchForm(SearchForm):
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def __init__(self, *args, **kwargs):
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super(ModelSearchForm, self).__init__(*args, **kwargs)
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self.fields['models'] = forms.MultipleChoiceField(choices=model_choices(), required=False, label=_('Search In'), widget=forms.CheckboxSelectMultiple)
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def get_models(self):
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"""Return an alphabetical list of model classes in the index."""
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search_models = []
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if self.is_valid():
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for model in self.cleaned_data['models']:
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search_models.append(models.get_model(*model.split('.')))
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return search_models
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def search(self):
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sqs = super(ModelSearchForm, self).search()
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return sqs.models(*self.get_models())
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class HighlightedModelSearchForm(ModelSearchForm):
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def search(self):
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return super(HighlightedModelSearchForm, self).search().highlight()
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class FacetedModelSearchForm(ModelSearchForm):
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selected_facets = forms.CharField(required=False, widget=forms.HiddenInput)
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def search(self):
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sqs = super(FacetedModelSearchForm, self).search()
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if hasattr(self, 'cleaned_data') and self.cleaned_data['selected_facets']:
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sqs = sqs.narrow(self.cleaned_data['selected_facets'])
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return sqs.models(*self.get_models())
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