迁移KE数据问题

app/views/shixuns/index.json.jbuilder

@@ -9,24 +9,8 @@ json.shixuns do
   json.partial! 'shixun', locals: {shixuns: @shixuns}
 end
 
-s_s = '<p>
-	作业要求：
-</p>
-<p>
-	&nbsp;&nbsp;&nbsp;&nbsp; 1、本作业要求分组完成一个大型程序
-</p>
-<p>
-	&nbsp;&nbsp;&nbsp;&nbsp; 2、请按任课教师要求分组
-</p>
-<p>
-	&nbsp;&nbsp;&nbsp;&nbsp; 3、每组建议为1-2人，
-</p>
-<p>
-	&nbsp;&nbsp;&nbsp;&nbsp; 4、每个人都需要完成必要的工作任务并及时提交个人的过程材料
-</p>
-<p>
-	&nbsp;&nbsp;&nbsp;&nbsp; 5、上传的单个文件大小不能超过2GB
-</p>'
+s_s = ''
 
 json.html_contents sanitize(s_s, tags: %w(img a table tr td tbody pre), attributes: %w(src href target style)).gsub(">\n<", "><")
                        .gsub(/^\n/, "").gsub("    ", "").gsub(/(\n)+/, "<br />").gsub("\t", "  ").gsub("\n", "").gsub("    ", "  ")
+                       .gsub(/(<br\s?\/?>)+/, "<br />")

db/migrate/20190805010549_modify_ke_contents_for_markdown.rb

@@ -5,7 +5,7 @@ class ModifyKeContentsForMarkdown < ActiveRecord::Migration[5.2]
       return content if content.blank?
       s_contents = sanitize(content, tags: %w(img a span table td tr tbody pre), attributes: %w(src href target style))
       s_contents.gsub(">\n<", "><").gsub(/^\n/, "").gsub("    ", "").gsub(/(\n)+/, "<br />")
-          .gsub("\t", "  ").gsub("\n", "").gsub("    ", "  ")
+          .gsub("\t", "  ").gsub("\n", "").gsub("    ", "  ").gsub(/(<br\s?\/?>)+/, "<br />")
     end
 
     # 课程讨论区

db/migrate/20190806062209_second_mofidy_ke_contents_for_md.rb

@@ -5,7 +5,7 @@ class SecondMofidyKeContentsForMd < ActiveRecord::Migration[5.2]
       return content if content.blank?
       s_contents = sanitize(content, tags: %w(img a span table td tr tbody pre), attributes: %w(src href target style))
       s_contents.gsub(">\n<", "><").gsub(/^\n/, "").gsub("    ", "").gsub(/(\n)+/, "<br />")
-          .gsub("\t", "  ").gsub("\n", "").gsub("    ", "  ")
+          .gsub("\t", "  ").gsub("\n", "").gsub("    ", "  ").gsub(/(<br\s?\/?>)+/, "<br />")
 
     end
 

db/migrate/20190806063903_third_modify_ke_for_student_work.rb

@@ -4,8 +4,8 @@ class ThirdModifyKeForStudentWork < ActiveRecord::Migration[5.2]
     def ke_transform_to_md content
       return content if content.blank?
       s_contents = sanitize(content, tags: %w(img a span table td tr tbody pre), attributes: %w(src href target style))
-      s_contents.gsub(">\n<", "><").gsub(/^\n/, "").gsub("    ", "").gsub(/(\n)+/, "<br />")
-          .gsub("\t", "  ").gsub("\n", "").gsub("    ", "  ")
+      s_contents.gsub(">\n<", "><").gsub(/^\n/, "").gsub(" ", "").gsub(/(\n)+/, "<br />")
+          .gsub("\t", "  ").gsub("\n", "").gsub("    ", "  ").gsub(/(<br\s?\/?>)+/, "<br />")
     end
 
     # 学生的作品 过滤掉一些描述的ke图片的作品