ruby-on-rails - link_to 路径定义

Question

我正在开发一个 Rails v2.3.2 应用程序。

我有一个 Controller :

class SchoolController < ApplicationController
  ...

  def edit
    @school=School.find_by_id params[:id]

  end

  def check_teachers
    @teachers = @school.teachers
    ...
  end

end

在app/views/schools/edit.html.erb中我想要一个链接，点击它会触发check_teachers Controller 中的方法，如何定义此链接的路径？

app/views/schools/edit.html.erb:

link_to 'Check teachers' WHAT_IS_THE_PATH_HERE

Answer 1

link_to 'Check teachers', :action => :check_teachers, :id => @school.id

或

link_to 'Check teachers', "/school/check_teachers/#{@school.id}"

或者您可以在 config/routes.rb 中定义命名路由，如下所示:

map.check_teachers, '/school/check_teachers/:id' :controller => :school, :action => :check_teachers

并调用由命名路由生成的 url-helper，如下所示:

link_to 'Check teachers', check_teachers_path(:id => @school.id)

你可以使用这个id在 Controller 中查找老师

def check_teachers
  @school = School.find params[:id]
  @teachers = @school.teachers
  ...
end