mirror of
https://github.com/samuelclay/NewsBlur.git
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77 lines
2.9 KiB
Python
77 lines
2.9 KiB
Python
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from django import forms
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from django.conf import settings
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from django.utils.safestring import mark_safe
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from django.utils.text import truncate_words
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from django.template.loader import render_to_string
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from django.contrib.admin.widgets import ForeignKeyRawIdWidget
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class ForeignKeySearchInput(ForeignKeyRawIdWidget):
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"""
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A Widget for displaying ForeignKeys in an autocomplete search input
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instead in a <select> box.
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"""
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# Set in subclass to render the widget with a different template
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widget_template = None
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# Set this to the patch of the search view
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search_path = '../foreignkey_autocomplete/'
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class Media:
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css = {
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'all': ('django_extensions/css/jquery.autocomplete.css',)
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}
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js = (
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'django_extensions/js/jquery.js',
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'django_extensions/js/jquery.bgiframe.min.js',
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'django_extensions/js/jquery.ajaxQueue.js',
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'django_extensions/js/jquery.autocomplete.js',
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)
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def label_for_value(self, value):
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key = self.rel.get_related_field().name
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obj = self.rel.to._default_manager.get(**{key: value})
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return truncate_words(obj, 14)
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def __init__(self, rel, search_fields, attrs=None):
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self.search_fields = search_fields
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super(ForeignKeySearchInput, self).__init__(rel, attrs)
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def render(self, name, value, attrs=None):
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if attrs is None:
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attrs = {}
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output = [super(ForeignKeySearchInput, self).render(name, value, attrs)]
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opts = self.rel.to._meta
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app_label = opts.app_label
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model_name = opts.object_name.lower()
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related_url = '../../../%s/%s/' % (app_label, model_name)
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params = self.url_parameters()
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if params:
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url = '?' + '&'.join(['%s=%s' % (k, v) for k, v in params.items()])
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else:
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url = ''
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if not attrs.has_key('class'):
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attrs['class'] = 'vForeignKeyRawIdAdminField'
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# Call the TextInput render method directly to have more control
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output = [forms.TextInput.render(self, name, value, attrs)]
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if value:
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label = self.label_for_value(value)
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else:
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label = u''
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context = {
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'url': url,
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'related_url': related_url,
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'admin_media_prefix': settings.ADMIN_MEDIA_PREFIX,
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'search_path': self.search_path,
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'search_fields': ','.join(self.search_fields),
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'model_name': model_name,
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'app_label': app_label,
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'label': label,
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'name': name,
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}
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output.append(render_to_string(self.widget_template or (
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'django_extensions/widgets/%s/%s/foreignkey_searchinput.html' % (app_label, model_name),
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'django_extensions/widgets/%s/foreignkey_searchinput.html' % app_label,
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'django_extensions/widgets/foreignkey_searchinput.html',
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), context))
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output.reverse()
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return mark_safe(u''.join(output))
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