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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (C) 2010 Étienne Loks <etienne.loks_AT_peacefrogsDOTnet>
# Copyright (C) 2007 skam <massimo dot scamarcia at gmail.com>
# (http://djangosnippets.org/snippets/233/)
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# See the file COPYING for details.
from django import forms
from django.forms.widgets import flatatt
from django.utils.encoding import smart_unicode
from django.utils.html import escape
from django.utils.simplejson import JSONEncoder
class JQueryAutoComplete(forms.TextInput):
def __init__(self, source, options={}, attrs={}):
"""
Source can be a list containing the autocomplete values or a
string containing the url used for the request.
"""
self.options = None
self.attrs = {}
self.source = source
if len(options) > 0:
self.options = JSONEncoder().encode(options)
self.attrs.update(attrs)
def render_js(self, field_id):
if isinstance(self.source, list):
source = JSONEncoder().encode(self.source)
elif isinstance(self.source, str) or isinstance(self.source, unicode):
source = "'%s'" % escape(self.source)
else:
try:
source = "'" + unicode(self.source) +"'"
except:
raise ValueError('source type is not valid')
options = 'source : ' + source
options += ''', select: function( event, ui ) {
$("#result").html(ui.item ?
"Selected: " + ui.item.value + " aka " + ui.item.id :
"Nothing selected, input was " + this.value );
},minLength: 2
'''
if self.options:
options += ',%s' % self.options
return u'$(\'#%s\').autocomplete({%s});' % (field_id, options)
def render(self, name, value=None, attrs=None):
final_attrs = self.build_attrs(attrs, name=name)
if value:
final_attrs['value'] = escape(smart_unicode(value))
if not self.attrs.has_key('id'):
final_attrs['id'] = 'id_%s' % name
return u'''<input %(attrs)s/><p id="result"></p>
<script type="text/javascript"><!--//
$(function() {%(js)s});//--></script>
''' % {
'attrs' : flatatt(final_attrs),
'js' : self.render_js(final_attrs['id']),
}
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