Merge branch 'ajax-min-input-length'

doc/changelog.rst

@@ -6,6 +6,7 @@ next release
 
 * Sort on multiple columns with `column_default_sort`
 * Upgrade Leaflet and Leaflet.draw plugins, used for geoalchemy integration
+* Specify `minimum_input_length` for ajax widget
 
 1.5.2
 -----

examples/sqla/app.py

@@ -130,8 +130,11 @@ class PostAdmin(sqla.ModelView):
             'fields': (User.username, User.email)
         },
         'tags': {
-            'fields': (Tag.name,)
-        }
+            'fields': (Tag.name,),
+            'minimum_input_length': 0,
+            'placeholder': 'Please select',
+            'page_size': 5,
+        },
     }
 
     def __init__(self, session):

flask_admin/contrib/mongoengine/ajax.py

@@ -50,17 +50,18 @@ class QueryAjaxModelLoader(AjaxModelLoader):
     def get_list(self, term, offset=0, limit=DEFAULT_PAGE_SIZE):
         query = self.model.objects
 
-        criteria = None
+        if len(term) > 0:
+            criteria = None
 
-        for field in self._cached_fields:
-            flt = {u'%s__icontains' % field.name: term}
+            for field in self._cached_fields:
+                flt = {u'%s__icontains' % field.name: term}
 
-            if not criteria:
-                criteria = mongoengine.Q(**flt)
-            else:
-                criteria |= mongoengine.Q(**flt)
+                if not criteria:
+                    criteria = mongoengine.Q(**flt)
+                else:
+                    criteria |= mongoengine.Q(**flt)
 
-        query = query.filter(criteria)
+            query = query.filter(criteria)
 
         if offset:
             query = query.skip(offset)

flask_admin/contrib/peewee/ajax.py

@@ -52,16 +52,17 @@ class QueryAjaxModelLoader(AjaxModelLoader):
     def get_list(self, term, offset=0, limit=DEFAULT_PAGE_SIZE):
         query = self.model.select()
 
-        stmt = None
-        for field in self._cached_fields:
-            q = field ** (u'%%%s%%' % term)
+        if len(term) > 0:
+            stmt = None
+            for field in self._cached_fields:
+                q = field ** (u'%%%s%%' % term)
 
-            if stmt is None:
-                stmt = q
-            else:
-                stmt |= q
+                if stmt is None:
+                    stmt = q
+                else:
+                    stmt |= q
 
-        query = query.where(stmt)
+            query = query.where(stmt)
 
         if offset:
             query = query.offset(offset)

flask_admin/model/base.py

@@ -671,7 +671,9 @@ class BaseModelView(BaseView, ActionsMixin):
                 form_ajax_refs = {
                     'user': {
                         'fields': ('first_name', 'last_name', 'email'),
-                        'page_size': 10
+                        'placeholder': 'Please select',
+                        'page_size': 10,
+                        'minimum_input_length': 0,
                     }
                 }
 

flask_admin/model/widgets.py

@@ -61,6 +61,9 @@ class AjaxSelect2Widget(object):
         placeholder = field.loader.options.get('placeholder', gettext('Please select model'))
         kwargs.setdefault('data-placeholder', placeholder)
 
+        minimum_input_length = int(field.loader.options.get('minimum_input_length', 1))
+        kwargs.setdefault('data-minimum-input-length', minimum_input_length)
+
         return HTMLString('<input %s>' % html_params(name=field.name, **kwargs))
 
 

flask_admin/static/admin/js/form.js

@@ -11,7 +11,7 @@
 
         var opts = {
           width: 'resolve',
-          minimumInputLength: 1,
+          minimumInputLength: $el.attr('data-minimum-input-length'),
           placeholder: 'data-placeholder',
           ajax: {
             url: $el.attr('data-url'),
@@ -305,6 +305,8 @@
                 if ($el.attr('data-allow-blank'))
                     opts['allowClear'] = true;
 
+                opts['minimumInputLength'] = $el.attr('data-minimum-input-length');
+
                 if ($el.attr('data-tags')) {
                     $.extend(opts, {
                         tokenSeparators: [','],