Do not create thumbnail automatically

examples/forms/simple.py

@@ -39,6 +39,7 @@ class File(db.Model):
     def __unicode__(self):
         return self.name
 
+
 class Image(db.Model):
     id = db.Column(db.Integer, primary_key=True)
     name = db.Column(db.Unicode(64))
@@ -75,6 +76,7 @@ def del_image(mapper, connection, target):
         except OSError:
             pass
 
+
 # Administrative views
 class FileView(sqla.ModelView):
     # Override form field to use Flask-Admin FileUploadField
@@ -106,7 +108,9 @@ class ImageView(sqla.ModelView):
     # Alternative way to contribute field is to override it completely.
     # In this case, Flask-Admin won't attempt to merge various parameters for the field.
     form_extra_fields = {
-        'path': form.ImageUploadField('Image', path=file_path)
+        'path': form.ImageUploadField('Image',
+                                      path=file_path,
+                                      thumbnail_size=(100, 100, True))
     }
 
 

flask_admin/form/upload.py

@@ -257,7 +257,7 @@ class ImageUploadField(FileUploadField):
                         upload = ImageUploadField('File', thumbgen=prefix_name)
 
             :param thumbnail_size:
-                Tuple or (width, height, force) values. If not provided, uses `(128, 128, True)` as default value.
+                Tuple or (width, height, force) values. If not provided, thumbnail won't be created.
 
                 Width and height is in pixels. If `force` is set to `True`, will try to fit image into dimensions and
                 keep aspect ratio, otherwise will just resize to target size.
@@ -269,7 +269,7 @@ class ImageUploadField(FileUploadField):
             raise Exception('PIL library was not found')
 
         self.thumbnail_fn = thumbgen or thumbgen_filename
-        self.thumbnail_size = thumbnail_size or (128, 128, True)
+        self.thumbnail_size = thumbnail_size
         self.endpoint = endpoint
         self.image = None
 

flask_admin/tests/test_form_upload.py

@@ -161,4 +161,4 @@ def test_image_upload_field():
 
             eq_(dummy.upload, 'test1.png')
             ok_(op.exists(op.join(path, 'test1.png')))
-            ok_(op.exists(op.join(path, 'test1_thumb.jpg')))
+            ok_(not op.exists(op.join(path, 'test1_thumb.jpg')))