Add widget_format field to DateTimeField to allow modifying datetime format from form_widget_args

flask_admin/contrib/sqla/form.py

@@ -2,7 +2,6 @@ from wtforms import fields, validators
 from sqlalchemy import Boolean, Column
 
 from flask.ext.admin import form
-from flask.ext.admin.form import Select2Field
 from flask.ext.admin.model.form import (converts, ModelConverterBase,
                                         InlineModelConverterBase, FieldPlaceholder)
 from flask.ext.admin.model.fields import AjaxSelectField, AjaxSelectMultipleField
@@ -238,7 +237,7 @@ class AdminModelConverter(ModelConverterBase):
                 if mapper.class_ == self.view.model and form_choices:
                     choices = form_choices.get(column.key)
                     if choices:
-                        return Select2Field(
+                        return form.Select2Field(
                             choices=choices,
                             allow_blank=column.nullable,
                             **kwargs
@@ -287,8 +286,7 @@ class AdminModelConverter(ModelConverterBase):
 
     @converts('DateTime')
     def convert_datetime(self, field_args, **extra):
-        field_args['widget'] = form.DateTimePickerWidget()
-        return DateTimeField(**field_args)
+        return form.DateTimeField(**field_args)
 
     @converts('Time')
     def convert_time(self, field_args, **extra):

flask_admin/form/fields.py

@@ -9,7 +9,25 @@ from . import widgets as admin_widgets
 
 __all__ = ['TimeField', 'Select2Field', 'Select2TagsField']
 
+class DateTimeField(fields.DateTimeField):
+	widget = admin_widgets.DateTimePickerWidget()
+    def __init__(self, label=None, validators=None, widget_format=None, **kwargs):
+        """
+            Constructor
 
+            :param label:
+                Label
+            :param validators:
+                Field validators
+            :param widget_format:
+                Widget date format. Defaults to 'hh:ii:ss'
+            :param kwargs:
+                Any additional parameters
+        """
+        super(DateTimeField, self).__init__(label, validators, **kwargs)
+		
+        self.widget_format = widget_format or 'yyyy-mm-dd hh:ii:ss'
+		
 class TimeField(fields.Field):
     """
         A text field which stores a `datetime.time` object.

flask_admin/form/widgets.py

@@ -57,7 +57,7 @@ class DateTimePickerWidget(widgets.TextInput):
     """
     def __call__(self, field, **kwargs):
         kwargs['data-role'] = u'datetimepicker'
-        kwargs['data-date-format'] = u'yyyy-mm-dd hh:ii:ss'
+        kwargs['data-date-format'] = field.widget_format or u'yyyy-mm-dd hh:ii:ss'
         kwargs['data-date-autoclose'] = u'true'
         kwargs['data-date-today-btn'] = u'linked'
         kwargs['data-date-today-highlight'] = u'true'