modify upload_img, use _search_dir for getting file dir

content.py

@@ -115,8 +115,8 @@ class Content(Resource):
 @app.route('/api/upload/img', methods=['POST'])
 def upload_img():
     img_data = request.files['image']
-    file_dir = '{}/img/{}'.format(request.args.get('url', type=str), img_data.filename)
-    img_dir = CONTENT_DIR + file_dir
+    file_dir = _search_dir(request.args.get('url', type=str))
+    img_dir = path.join(file_dir, 'img/{}'.format(img_data.filename))
     img_data.save(img_dir)
     return {'filename': img_data.filename}