Replace MultipleAutocompleteField with Select2MultipleField (refs #3575)

2 files changed, 86 insertions, 39 deletions

diff --git a/ishtar_common/static/media/style.css b/ishtar_common/static/media/style.css
index adaf94200..fc840526e 100644
--- a/ishtar_common/static/media/style.css
+++ b/ishtar_common/static/media/style.css
@@ -92,6 +92,15 @@ div.form {
     border-bottom:1px solid #D14;
 }
 
+.form .select2-container--default .select2-selection--multiple {
+    border: 1px solid #FFF;
+}
+
+.form .select2-container--default.select2-container--focus
+.select2-selection--multiple {
+    border:1px solid #D14;
+}
+
 hr.spacer{
     clear:both;
     border:0;
diff --git a/ishtar_common/widgets.py b/ishtar_common/widgets.py
index ffa09e7b4..f0e1dc775 100644
--- a/ishtar_common/widgets.py
+++ b/ishtar_common/widgets.py
@@ -45,6 +45,12 @@ reverse_lazy = lazy(reverse, unicode)
 
 
 class Select2Multiple(forms.SelectMultiple):
+    def __init__(self, attrs=None, choices=(), remote=None, model=None,
+                 available=None):
+        super(Select2Multiple, self).__init__(attrs, choices)
+        self.remote = remote
+        self.available = available
+        self.model = model
 
     @property
     def media(self):
@@ -59,20 +65,66 @@ class Select2Multiple(forms.SelectMultiple):
         media.add_js(js)
         return media
 
+    def get_q(self):
+        q = self.model.objects
+        if self.available:
+            q = q.filter(available=True)
+        return q
+
+    def get_choices(self):
+        for i in self.get_q().all():
+            yield (i.pk, unicode(i))
+
     def render(self, name, value, attrs=None, choices=()):
+        self.remote = unicode(self.remote)
+        if self.remote in ('None', 'false'):
+            # test on lazy object is buggy... so we have this ugly test
+            self.remote = None
+        if not choices and not self.remote and self.model:
+            choices = self.get_choices()
         klass = attrs and attrs.get('class') or ''
         klass += ' ' if klass else '' + 'js-select2'
         if not attrs:
             attrs = {}
         attrs['class'] = klass
         attrs['style'] = "width: 370px"
+        options = ""
+        if self.remote:
+            options = """{
+            ajax: {
+                url: '%s',
+                delay: 250,
+                dataType: 'json',
+                minimumInputLength: 2,
+                processResults: function (data) {
+                 if(!data) return {results: []};
+                 var result = $.map(data, function (item) {
+                        return {
+                            text: item['value'],
+                            id: item['id']
+                        }
+                      });
+                 return {
+                    results: result
+                  }
+                }
+              }
+            }""" % self.remote
+            if value:
+                choices = []
+                for v in value:
+                    try:
+                        choices.append((v, self.model.objects.get(pk=v)))
+                    except self.model.DoesNotExist:
+                        # an old reference ? it should not happen
+                        pass
         html = super(Select2Multiple, self).render(name, value, attrs,
                                                    choices)
         html += """<script type="text/javascript">
         $(document).ready(function() {{
-            $("#id_{}").select2();
+            $("#id_{}").select2({});
         }});</script>
-        """.format(name)
+        """.format(name, options)
         return mark_safe(html)
 
 
@@ -91,49 +143,35 @@ class CheckboxSelectMultiple(CheckboxSelectMultipleBase):
                                                           choices)
 
 
-class MultipleAutocompleteField(forms.MultipleChoiceField):
+class Select2MultipleField(forms.MultipleChoiceField):
     def __init__(self, *args, **kwargs):
-        self.model = None
+        remote = None
+        if 'remote' in kwargs:
+            remote = kwargs.pop('remote')
+        self.model, self.remote = None, None
         if 'model' in kwargs:
             self.model = kwargs.pop('model')
-        if 'choices' not in kwargs and self.model:
-            kwargs['choices'] = []
-        new = kwargs.pop('new') if 'new' in kwargs else None
-        if 'widget' not in kwargs and self.model:
-            kwargs['widget'] = JQueryAutoComplete(
-                reverse_lazy('autocomplete-' + self.model.__name__.lower()),
-                associated_model=self.model, new=new,
-                multiple=True)
-        super(MultipleAutocompleteField, self).__init__(*args, **kwargs)
-
-    def get_choices(self):
-        return [(i.pk, unicode(i)) for i in self.model.objects.all()]
+            if remote:
+                self.remote = reverse_lazy(
+                    'autocomplete-' + self.model.__name__.lower())
+        self.available = False
+        if 'available' in kwargs:
+            self.available = kwargs.pop('available')
+        kwargs['widget'] = Select2Multiple(model=self.model,
+                                           available=self.available,
+                                           remote=self.remote)
+        super(Select2MultipleField, self).__init__(*args, **kwargs)
+
+    def get_q(self):
+        q = self.model.objects
+        if self.available:
+            q = q.filter(available=True)
+        return q
 
     def valid_value(self, value):
         if not self.model:
-            return super(MultipleAutocompleteField, self).valid_value(value)
-        return bool(self.model.objects.filter(pk=value).count())
-
-    def clean(self, value):
-        if value:
-            # clean JS messup with values
-            try:
-                if type(value) not in (list, tuple):
-                    value = [int(value)]
-                else:
-                    val = value
-                    value = []
-                    for v in val:
-                        v = unicode(v).strip('[').strip(']')\
-                                      .strip('u').strip("'").strip('"')
-                        value += [int(va.strip())
-                                  for va in list(set(v.split(',')))
-                                  if va.strip()]
-            except (TypeError, ValueError):
-                value = []
-        else:
-            value = []
-        return super(MultipleAutocompleteField, self).clean(value)
+            return super(Select2MultipleField, self).valid_value(value)
+        return bool(self.get_q().filter(pk=value).count())
 
 
 class DeleteWidget(forms.CheckboxInput):