ruby-on-rails-4
Ruby on Rails Application Template
What Rails application templates show best practices for setting up a new Ruby on Rails application? I\'m interested in two things.[详细]
2023-02-11 00:49 分类：问答Determine what attributes were changed in Rails after_save callback?
I\'m setting up an after_save callback in my model observer to send a notification only if the model\'s published attribute was changed from false to true. Since methods such as changed? are only usef[详细]
2023-01-18 22:50 分类：问答How to map more than one Attribute with ActiveRecord?
If I type in my console u 开发者_开发问答= User.first u.friends(&map:username) I get [\"Peter\", \"Mary\", \"Jane\"] but I also want to show the birthday, so how do I do that? I tried[详细]
2023-01-06 21:50 分类：问答concat two fields activerecord
I\'m so use开发者_高级运维d to oracle where you can simply concat(field1, \' \', field2) but if I\'m using activerecord to find the field1 and field2, and I need a space in between, how do I accom[详细]
2022-12-15 07:14 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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