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class ModifyCourseIntroductionForBoards < ActiveRecord :: Migration [ 5 . 2 ]
def change
platform = PlatformSample . where ( :samples_type = > " courseGuide " ) . first
content = '大家好!
欢迎进入在线课堂!
该课堂对应于一个或多个线下班级,课堂成员可以利用老师发布的邀请码申请加入。
在这里,老师和教辅将结合教学内容,把不同类型的实训项目发布给大家,让大家在真实的实战环境中得到锻炼。
那么什么是实训项目呢?大家有空自己尝试一下就知道了:
- Python实训: [Python程序设计入门](https://www.educoder.net/paths/13) | [大学计算机基础——基于Python](https://www.educoder.net/paths/11)
- Java实训: [Java语言程序设计( 基础篇) ](https://www.educoder.net/paths/38)
- C/C++实训:[C/C++程序设计](https://www.educoder.net/paths/3) | [数据结构与算法( C语言) ](https://www.educoder.net/paths/4)
- Matlab实训: [智取MATLAB: 基本语法](https://www.educoder.net/shixuns/7bvs54gw/challenges) | [控制结构](https://www.educoder.net/shixuns/q4fowkfa/challenges) | [矩阵进阶](https://www.educoder.net/shixuns/grunzcs3/challenges)
- HTML/CSS实训: [HTML5+CSS3网页制作( 基础篇) ](https://www.educoder.net/paths/15)
- 云计算实训:[Docker企业级实训( 基础篇) ](https://www.educoder.net/paths/29)
... ... 等等
你们现在就可以去体验哦!
欢迎提出宝贵建议,平台一定会给您带来更多惊喜!
支持团队'
platform . update_column ( :contents , content )
messages = Message . where ( subject : " 新课导语 " )
messages . find_each do | m |
m . update_column ( :is_md , true )
message_detail = m . message_detail
message_detail . update_column ( :content , content ) if message_detail
end
end
end