Hi,
I adopted nice SelectFilter2.js for single item selecting with search
in change forms
in case of relatively large lists.
Here is my changes against current sources (0.96-pre).
It's seems work for me.
# add file SelectFilter3.js to ..\admin\media\js (adaptation of
SelectFilter2.js)
------------------------------------------------------
/*
SelectFilter3 - Turns a multiple-select box into a filter interface.
Different than SelectFilter because this is coupled to the admin framework.
Requires core.js, SelectBox.js and addevent.js.
*/
function findForm(node) {
// returns the node of the form containing the given node
if (node.tagName.toLowerCase() != 'form') {
return findForm(node.parentNode);
}
return node;
}
var SelectFilter3 = {
init: function(field_id, field_name, is_stacked, admin_media_prefix) {
var from_box = document.getElementById(field_id);
from_box.id += '_from'; // change its ID
from_box.className = 'filtered';
from_box.size = 5
// Remove <p class="info">, because it just gets in the way.
var ps = from_box.parentNode.getElementsByTagName('p');
for (var i=0; i<ps.length; i++) {
from_box.parentNode.removeChild(ps[i]);
}
// <div class="selector"> or <div class="selector stacked">
var selector_div = quickElement('div', from_box.parentNode);
selector_div.className = is_stacked ? 'selector stacked' : 'selector';
// <div class="selector-available">
var selector_available = quickElement('div', selector_div, '');
selector_available.className = 'selector-available';
quickElement('h2', selector_available,
interpolate(gettext('Select'), [field_name]));
var filter_p = quickElement('p', selector_available, '');
filter_p.className = 'selector-filter';
quickElement('img', filter_p, '', 'src', admin_media_prefix +
'img/admin/selector-search.gif');
filter_p.appendChild(document.createTextNode(' '));
var filter_input = quickElement('input', filter_p, '', 'type', 'text');
filter_input.id = field_id + '_input';
selector_available.appendChild(from_box);
//var choose_all = quickElement('a', selector_available,
gettext('Choose all'), 'href', 'javascript: (function(){
SelectBox.move_all("' + field_id + '_from", "' + field_id + '_to");
})()');
//choose_all.className = 'selector-chooseall';
// <ul class="selector-chooser">
//var selector_chooser = quickElement('ul', selector_div, '');
//selector_chooser.className = 'selector-chooser';
//var add_link = quickElement('a', quickElement('li',
selector_chooser, ''), gettext('Add'), 'href', 'javascript:
(function(){ SelectBox.move("' + field_id + '_from","' + field_id +
'_to");})()');
//add_link.className = 'selector-add';
//var remove_link = quickElement('a', quickElement('li',
selector_chooser, ''), gettext('Remove'), 'href', 'javascript:
(function(){ SelectBox.move("' + field_id + '_to","' + field_id +
'_from");})()');
//remove_link.className = 'selector-remove';
// <div class="selector-chosen">
//var selector_chosen = quickElement('div', selector_div, '');
//selector_chosen.className = 'selector-chosen';
//quickElement('h2', selector_chosen,
interpolate(gettext('Chosen %s'), [field_name]));
//var selector_filter = quickElement('p', selector_chosen,
gettext('Select your choice(s) and click '));
//selector_filter.className = 'selector-filter';
//quickElement('img', selector_filter, '', 'src',
admin_media_prefix + 'img/admin/selector-add.gif', 'alt', 'Add');
//var to_box = quickElement('select', selector_chosen, '',
'id', field_id + '_to', 'multiple', 'multiple', 'size', from_box.size,
'name', from_box.getAttribute('name'));
//to_box.className = 'filtered';
//var clear_all = quickElement('a', selector_chosen,
gettext('Clear all'), 'href', 'javascript: (function() {
SelectBox.move_all("' + field_id + '_to", "' + field_id +
'_from");})()');
//clear_all.className = 'selector-clearall';
//from_box.setAttribute('name', from_box.getAttribute('name') + '_old');
// Set up the JavaScript event handlers for the select box
filter interface
addEvent(filter_input, 'keyup', function(e) {
SelectFilter.filter_key_up(e, field_id); });
addEvent(filter_input, 'keydown', function(e) {
SelectFilter.filter_key_down(e, field_id); });
//addEvent(from_box, 'dblclick', function() {
SelectBox.move(field_id + '_from', field_id + '_to'); });
//addEvent(to_box, 'dblclick', function() {
SelectBox.move(field_id + '_to', field_id + '_from'); });
addEvent(from_box, 'submit', function() {
SelectBox.select_all(field_id + '_from'); });
SelectBox.init(field_id + '_from');
//SelectBox.init(field_id + '_to');
// Move selected from_box options to to_box
//SelectBox.move(field_id + '_from', field_id + '_to');
},
filter_key_up: function(event, field_id) {
from = document.getElementById(field_id + '_from');
// don't submit form if user pressed Enter
if ((event.which && event.which == 13) || (event.keyCode &&
event.keyCode == 13)) {
from.selectedIndex = 0;
//SelectBox.move(field_id + '_from', field_id + '_to');
from.selectedIndex = 0;
return false;
}
var temp = from.selectedIndex;
SelectBox.filter(field_id + '_from',
document.getElementById(field_id + '_input').value);
from.selectedIndex = temp;
return true;
},
filter_key_down: function(event, field_id) {
from = document.getElementById(field_id + '_from');
// right arrow -- move across
if ((event.which && event.which == 39) || (event.keyCode &&
event.keyCode == 39)) {
var old_index = from.selectedIndex;
//SelectBox.move(field_id + '_from', field_id + '_to');
from.selectedIndex = (old_index == from.length) ?
from.length - 1 : old_index;
return false;
}
// down arrow -- wrap around
if ((event.which && event.which == 40) || (event.keyCode &&
event.keyCode == 40)) {
from.selectedIndex = (from.length == from.selectedIndex +
1) ? 0 : from.selectedIndex + 1;
}
// up arrow -- wrap around
if ((event.which && event.which == 38) || (event.keyCode &&
event.keyCode == 38)) {
from.selectedIndex = (from.selectedIndex == 0) ?
from.length - 1 : from.selectedIndex - 1;
}
return true;
}
}
-------------------------------------------------------
# in ..\admin\views\main.py
# add import of 'js/SelectFilter3.js'
def get_javascript_imports(opts, auto_populated_fields, field_sets):
# ...
for field_line in field_set:
try:
for f in field_line:
if f.rel: # and isinstance(f,
models.ManyToManyField) and f.rel.filter_interface:
js.extend(['js/SelectBox.js' ,
'js/SelectFilter2.js', 'js/SelectFilter3.js'])
raise StopIteration
except StopIteration:
break
# ....
# in ..\admin\templatestag\admin_modify.py
def filter_interface_script_maybe(bound_field):
f = bound_field.field
if f.rel and isinstance(f.rel, models.ManyToManyRel) and
f.rel.filter_interface:
return '<script type="text/javascript">addEvent(window,
"load", function(e) {' \
' SelectFilter.init("id_%s", %r, %s, "%s"); });</script>\n' % (
f.name, f.verbose_name,
f.rel.filter_interface-1,
settings.ADMIN_MEDIA_PREFIX)
elif f.rel and isinstance(f.rel, models.ManyToOneRel) and
f.rel.filter_interface:
return '<script type="text/javascript">addEvent(window,
"load", function(e) {' \
' SelectFilter3.init("id_%s", %r, %s, "%s"); });</script>\n' % (
f.name, f.verbose_name,
#f.rel.filter_interface-1,
2,
settings.ADMIN_MEDIA_PREFIX)
else:
return ''
filter_interface_script_maybe =
register.simple_tag(filter_interface_script_maybe)
# in ..\db\models\fields\related.py
# add filter_interface=kwargs.pop('filter_interface', None)
class ForeignKey(RelatedField, Field):
#......
kwargs['rel'] = ManyToOneRel(to, to_field,
num_in_admin=kwargs.pop('num_in_admin', 3),
min_num_in_admin=kwargs.pop('min_num_in_admin', None),
max_num_in_admin=kwargs.pop('max_num_in_admin', None),
num_extra_on_change=kwargs.pop('num_extra_on_change', 1),
filter_interface=kwargs.pop('filter_interface', None),
edit_inline=kwargs.pop('edit_inline', False),
related_name=kwargs.pop('related_name', None),
limit_choices_to=kwargs.pop('limit_choices_to', None),
lookup_overrides=kwargs.pop('lookup_overrides', None),
raw_id_admin=kwargs.pop('raw_id_admin', False))
# ...
# add filter_interface keyword argument and assignment
class ManyToOneRel(object):
def __init__(self, to, field_name, num_in_admin=3, min_num_in_admin=None,
max_num_in_admin=None, num_extra_on_change=1,
edit_inline=False, filter_interface=None,
related_name=None, limit_choices_to=None,
lookup_overrides=None, raw_id_admin=False):
try:
to._meta
except AttributeError: # to._meta doesn't exist, so it must be
RECURSIVE_RELATIONSHIP_CONSTANT
assert isinstance(to, basestring), "'to' must be either a
model, a model name or the string %r" %
RECURSIVE_RELATIONSHIP_CONSTANT
self.to, self.field_name = to, field_name
self.num_in_admin, self.edit_inline = num_in_admin, edit_inline
self.min_num_in_admin, self.max_num_in_admin =
min_num_in_admin, max_num_in_admin
self.num_extra_on_change, self.related_name =
num_extra_on_change, related_name
if limit_choices_to is None:
limit_choices_to = {}
self.limit_choices_to = limit_choices_to
# it's here
self.filter_interface = filter_interface and 1 or 0
self.lookup_overrides = lookup_overrides or {}
self.raw_id_admin = raw_id_admin
self.multiple = True
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