解决版本库提交记录中：上传图片或者非可以预览文件 显示详情500问题

app/controllers/repositories_controller.rb

@@ -49,7 +49,7 @@ class RepositoriesController < ApplicationController
   helper :project_score
   #@root_path = RepositoriesHelper::ROOT_PATH
   $g=Gitlab.client
-  require 'net/ssh'
+  # require 'net/ssh'
 
   rescue_from Redmine::Scm::Adapters::CommandFailed, :with => :show_error_command_failed
   def new

app/helpers/repositories_helper.rb

@@ -65,7 +65,7 @@ module RepositoriesHelper
 
   # 获取diff内容行号
   def diff_line_num content
-    content.scan(/@@ -(\d+),\d+ \+\d+,\d+ @@/).first.join("").to_i
+    content.scan(/@@ -(\d+),\d+ \+\d+,\d+ @@/).first.nil? ? "" : content.scan(/@@ -(\d+),\d+ \+\d+,\d+ @@/).first.join("").to_i
   end
 
   # 处理内容