Rails：将参数从视图传递到控制器 [英] Rails: Pass parameter from view to controller

问题描述

我在rails中有以下模型：

I have the following models in rails :

class Task < ActiveRecord::Base
  attr_accessible :description, :name, :project
  belongs_to :project

  validates :name, :presence => true

end

class Project < ActiveRecord::Base
  attr_accessible :name
  has_many :tasks
end

我有一个视图，列出了可用的项目点击任何项目，我想打开一个页面，其中列出了所点击的项目中的所有任务。现在的问题是如何传递项目ID？我还希望项目的id在许多控制器之后可见，所以我想我应该使用会话变量或类似的东西。

I have a view that lists the projects available On click on any of the project I want to open up a page that lists all the tasks in the clicked project. Now the question is how do I pass the project id? I also want the project id to be visible in many controllers after that so I think I should use session variables or something like that?

推荐答案

您想要使用嵌套资源

routes.rb

routes.rb

resources :project do
  resources :tasks
end

允许您执行<％= link_to'Tasks'，tasks_project_path（@project）％>

您将有一个任务的控制器，参数将包括：project_id / projects /：project_id / tasks

Then you'd have a controller for tasks, the params would include the :project_id /projects/:project_id/tasks

然后在控制器中：

class TasksController < ApplicationController
  def index
    @project = Project.find(params[:project_id])
    @tasks = @project.tasks
  end
end

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