--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/django_extensions/admin/widgets.py	Wed Jan 20 12:37:40 2010 +0100
@@ -0,0 +1,76 @@
+from django import forms
+from django.conf import settings
+from django.utils.safestring import mark_safe
+from django.utils.text import truncate_words
+from django.template.loader import render_to_string
+from django.contrib.admin.widgets import ForeignKeyRawIdWidget
+
+class ForeignKeySearchInput(ForeignKeyRawIdWidget):
+    """
+    A Widget for displaying ForeignKeys in an autocomplete search input 
+    instead in a <select> box.
+    """
+    # Set in subclass to render the widget with a different template
+    widget_template = None
+    # Set this to the patch of the search view
+    search_path = '../foreignkey_autocomplete/'
+
+    class Media:
+        css = {
+            'all': ('django_extensions/css/jquery.autocomplete.css',)
+        }
+        js = (
+            'django_extensions/js/jquery.js',
+            'django_extensions/js/jquery.bgiframe.min.js',
+            'django_extensions/js/jquery.ajaxQueue.js',
+            'django_extensions/js/jquery.autocomplete.js',
+        )
+
+    def label_for_value(self, value):
+        key = self.rel.get_related_field().name
+        obj = self.rel.to._default_manager.get(**{key: value})
+        return truncate_words(obj, 14)
+
+    def __init__(self, rel, search_fields, attrs=None):
+        self.search_fields = search_fields
+        super(ForeignKeySearchInput, self).__init__(rel, attrs)
+
+    def render(self, name, value, attrs=None):
+        if attrs is None:
+            attrs = {}
+        output = [super(ForeignKeySearchInput, self).render(name, value, attrs)]
+        opts = self.rel.to._meta
+        app_label = opts.app_label
+        model_name = opts.object_name.lower()
+        related_url = '../../../%s/%s/' % (app_label, model_name)
+        params = self.url_parameters()
+        if params:
+            url = '?' + '&amp;'.join(['%s=%s' % (k, v) for k, v in params.items()])
+        else:
+            url = ''
+        if not attrs.has_key('class'):
+            attrs['class'] = 'vForeignKeyRawIdAdminField'
+        # Call the TextInput render method directly to have more control
+        output = [forms.TextInput.render(self, name, value, attrs)]
+        if value:
+            label = self.label_for_value(value)
+        else:
+            label = u''
+        context = {
+            'url': url,
+            'related_url': related_url,
+            'admin_media_prefix': settings.ADMIN_MEDIA_PREFIX,
+            'search_path': self.search_path,
+            'search_fields': ','.join(self.search_fields),
+            'model_name': model_name,
+            'app_label': app_label,
+            'label': label,
+            'name': name,
+        }
+        output.append(render_to_string(self.widget_template or (
+            'django_extensions/widgets/%s/%s/foreignkey_searchinput.html' % (app_label, model_name),
+            'django_extensions/widgets/%s/foreignkey_searchinput.html' % app_label,
+            'django_extensions/widgets/foreignkey_searchinput.html',
+        ), context))
+        output.reverse()
+        return mark_safe(u''.join(output))