fields_for是 Ruby on Rails 框架中的一个辅助方法,用于在表单中嵌套资源。它允许你在父模型的表单中嵌入子模型的字段,非常适合处理一对多或多对多的关系。 相关优势 简化表单构建:fields_for自动处理嵌套资源的表单字段,减少了手动编写 HTML 和 Ruby 代码的工作量。
这里我们使用fields_for来为@project的每个task构建一个伪表单,实际上还是@project最外层同一个表单,不过这样我们就 可以在同一表单里添加额外的Model对象字段,再看一个官方的例子: <% form_for :person,@person, :url => { :action =>"update"}do|person_form| %> First name: <%= person_form.text_fie...
rails中一个窗体多个模型——fields_for 详细参考 http://railscasts.com/episodes/73-complex-forms-part-1中part-1、2、3部分 借助field_for可以生成表单来处理两个或更多模型对象的数据 先看一个官方的例子,一个表单中有person和permission两个模型,其中每个person包含一个permission <%= form_for(@person) do...
问Rails 4-编辑自动完成嵌套fields_for时的显示值EN我正在开发一个将菜谱、recipe_entries (has_many_t...
ruby-on-rails 关系fields_for上不允许的参数Player Create (0.2ms) INSERT INTO "players" ("name...
endThe custom fields in the above example are stored as virtual columns. These are populated from values passed in the params hash when creating the notifier.🙏 ContributingThis project uses Standard for formatting Ruby code. Please make sure to run standardrb before submitting pull requests....
# Create a migration with the required fields create_table :admins do |t| t.string :email t.string :encrypted_password t.timestamps null: false end # Inside your Admin model devise :database_authenticatable, :timeoutable # Inside your routes devise_for :admins # Inside your protected ...
Your website is gaining traction, and you are growing rapidly. Ruby/Rails is your programming language of choice. Your team is bigger and you’ve given up on “fat models, skinny controllers” as a design style for your Rails apps. However, you still don’t want to abandon using Rails?
Grouping Similar Service Objects for Sanity The example above has only one service object, but in the real world, things can get more complicated. For example, what if you had hundreds of services, and half of them were related business actions, e.g., having aFollowerservice that followed ...
This is particularly handy for APIs, where you need to send structured data to clients. For example, instead of exposing the entire model, you can choose specific fields or even modify how certain attributes appear in the response. To make matters easier for developers, Rails ships with a nat...