用于创建ajax关系的关系控制器-NoMethodError:未定义方法`[model] _url' [英] Relationships controller for creating an ajax relationship -NoMethodError: undefined method `[model]_url'

问题描述

我相信下面的控制器中的redirect_to存在问题.一门课程有许多级别，其中有很多步骤(步骤属于级别，而级别属于课程).我正在尝试将其重定向到该步骤.

I believe I am having problems with the redirect_to in my controller below. A course has many levels, which has many steps (step belongs to level, and level belongs to course). I am trying to redirect_to the step.

这是我要走的路:

/courses/:course_id/levels/:level_id/steps/:id(.:format)

这是控制器中的我的错误:

Here is my error in the controller:

Failure/Error: click_button "check answer"
 NoMethodError:
   undefined method `step_url' for #<UserStepsController:0x007ff8ccc478c8>

这里是发生错误的控制器:

Here is the controller in which the error occurs:

class UserStepsController < ApplicationController
    before_filter :authenticate_user!

    def create
        @step = Step.find(params[:user_step][:step_id])
        current_user.attempt_step!(@step)
        respond_to do |format|
          format.html { redirect_to @step }
          format.js
        end
    end

    def destroy
        @step = UserStep.find(params[:id]).step
        current_user.remove_user_step!(@step)
        respond_to do |format|
          format.html { redirect_to @step }
          format.js
        end 
    end
end

这是rspec

    describe "attempting a step" do
        let(:course) { FactoryGirl.create(:course)}
        let(:level) { FactoryGirl.create(:level, course: course) }
        let(:step) { FactoryGirl.create(:step, level: level) }
        before { sign_in user}

        describe "taking a course" do
            before { visit course_level_step_path(course.id, level.id, step.id)}

            it "should increment the user step count" do
                expect do
                    click_button "check answer"
                end.to change(user.user_steps, :count).by(1)
            end

            describe "toggling the button" do
                before { click_button "check answer"}
                it {  should have_selector('input', value: 'remove step')}
            end

        end

推荐答案

当您嵌套资源时，不能使用redirect_to @variable.正确的方法是让你说

You can't use redirect_to @variable when you have nested resources. The correct way would be for you to say

redirect_to course_level_step_url(@step.level.course.id, @step.level.id, @step.id)

因为要从实例变量"thinks"获取路由，所以您需要使用小写的类名加上_url的路径

Because the thing that gets the route from the instance variable 'thinks' you want the path of the lowercased class name plus _url

这篇关于用于创建ajax关系的关系控制器-NoMethodError:未定义方法`[model] _url'的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！