new: support search placeholder

flask_admin/contrib/sqla/view.py

@@ -555,6 +555,33 @@ class ModelView(BaseModelView):
 
         return bool(self.column_searchable_list)
 
+    def search_placeholder(self):
+        """
+            Return search placeholder.
+
+            For example, if set column_labels and column_searchable_list:
+
+            class MyModelView(BaseModelView):
+                column_labels = dict(name='Name', last_name='Last Name')
+                column_searchable_list = ('name', 'last_name')
+
+            placeholder is: "Search: Name, Last Name"
+        """
+        if not self.column_searchable_list:
+            return 'Search'
+
+        placeholders = []
+
+        for searchable in self.column_searchable_list:
+            if isinstance(searchable, InstrumentedAttribute):
+                placeholders.append(
+                    self.column_labels.get(searchable.key, searchable.key))
+            else:
+                placeholders.append(
+                    self.column_labels.get(searchable, searchable))
+
+        return 'Search: %s' % u', '.join(placeholders)
+
     def scaffold_filters(self, name):
         """
             Return list of enabled filters

flask_admin/model/base.py

@@ -1050,6 +1050,12 @@ class BaseModelView(BaseView, ActionsMixin):
         """
         return False
 
+    def search_placeholder(self):
+        """
+            Return search placeholder.
+        """
+        return 'Search'
+
     # Filter helpers
     def scaffold_filters(self, name):
         """
@@ -1880,6 +1886,7 @@ class BaseModelView(BaseView, ActionsMixin):
             search_supported=self._search_supported,
             clear_search_url=clear_search_url,
             search=view_args.search,
+            search_placeholder=self.search_placeholder(),
 
             # Filters
             filters=self._filters,

flask_admin/templates/bootstrap2/admin/model/layout.html

@@ -56,14 +56,14 @@
     {% endif %}
     {% if search %}
     <div class="input-append">
-            <input type="text" name="search" value="{{ search }}" class="{{ input_class }}" placeholder="{{ _gettext('Search') }}">
+            <input type="text" name="search" value="{{ search }}" class="{{ input_class }}" placeholder="{{ _gettext('%(placeholder)s', placeholder=search_placeholder) }}">
             <a href="{{ clear_search_url }}" class="clear add-on">
                 <i class="fa fa-times icon-remove"></i>
             </a>
     </div>
     {% else %}
     <div>
-        <input type="text" name="search" value="" class="{{ input_class }}" placeholder="{{ _gettext('Search') }}">
+        <input type="text" name="search" value="" class="{{ input_class }}" placeholder="{{ _gettext('%(placeholder)s', placeholder=search_placeholder) }}">
     </div>
     {% endif %}
 </form>

flask_admin/templates/bootstrap3/admin/model/layout.html

@@ -56,12 +56,12 @@
     {% endif %}
     {% if search %}
     <div class="input-group">
-        <input type="text" name="search" value="{{ search }}" class="{{ input_class }} form-control" placeholder="{{ _gettext('Search') }}">
+        <input type="text" name="search" value="{{ search }}" class="{{ input_class }} form-control" placeholder="{{ _gettext('%(placeholder)s', placeholder=search_placeholder) }}">
         <a href="{{ clear_search_url }}" class="input-group-addon clear"><span class="fa fa-times glyphicon glyphicon-remove"></span></a>
     </div>
     {% else %}
     <div class="form-group">
-        <input type="text" name="search" value="" class="{{ input_class }} form-control" placeholder="{{ _gettext('Search') }}">
+        <input type="text" name="search" value="" class="{{ input_class }} form-control" placeholder="{{ _gettext('%(placeholder)s', placeholder=search_placeholder) }}">
     </div>
     {% endif %}
 </form>