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我试图在Rails的应用程序4.的Rails的link_to路径
我有3种型号：项目，Project_Question，Project_Answer
的关联是：
项目：
has_many :project_questions
并接受项目问题的嵌套属性。
项目问题：项目答案
belongs_to :project
has_one :project_answer
，并接受嵌套属性。
我的路线是嵌套如下：
resources :projects do
resources :project_questions do
resources :project_answers
end
end
在我的项目问题的部分，我想一个链接来回答这个问题。我已经试过：
<%= link_to 'Answer this question', new_project_project_question_project_answer_path(:project_question_id => project_question.id) %>
我有我的路径文件名的路线，但我收到此错误信息：
undefined local variable or method `project_question' for #<#<Class:0x0000010742b9d8>:0x0000010f810b68>
我应该走在括号？
查看：
<div class="containerfluid">
<div class="row">
<div class="col-md-10 col-md-offset-1">
<% @project.project_questions.each do |singleQuestion| %>
<div class="categorytitle">
<%= singleQuestion.title %>
</div>
<div class="generaltext">
<%= singleQuestion.try(:content) %>
</div>
<span class="editproject">
<% if current_user.id == @project.creator_id %>
<%= link_to 'Answer this question', new_project_project_questions_project_answer_path(:project_question_id => project_question.id) %>
<% end %>
</span>
<% end %>
</div>
</div>
</div>
项目问题控制器：
class ProjectQuestionsController < ApplicationController
before_action :set_project_question, only: [:show, :edit, :update, :destroy]
# GET /project_questions
# GET /project_questions.json
def index
@project_questions = ProjectQuestion.all
end
# GET /project_questions/1
# GET /project_questions/1.json
def show
end
# GET /project_questions/new
def new
@project_question = ProjectQuestion.new
@project = Project.find(params[:project_id])
# @project_id = params[:project_id]
@project_question.project_answers[0] = ProjectAnswer.new
end
# GET /project_questions/1/edit
def edit
end
# POST /project_questions
# POST /project_questions.json
def create
@project_question = ProjectQuestion.new(project_question_params)
@project_question.project_id = project_question_params[:project_id]
respond_to do |format|
if @project_question.save
format.html { redirect_to project_url(Project.find(project_question_params[:project_id])), notice: 'Project question was successfully created.' }
format.json { render action: 'show', status: :created, location: @project_question }
else
format.html { render action: 'new' }
format.json { render json: @project_question.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /project_questions/1
# PATCH/PUT /project_questions/1.json
def update
respond_to do |format|
if @project_question.update(project_question_params)
format.html { redirect_to @project_question, notice: 'Project question was successfully updated.' }
format.json { head :no_content }
else
format.html { render action: 'edit' }
format.json { render json: @project_question.errors, status: :unprocessable_entity }
end
end
end
# DELETE /project_questions/1
# DELETE /project_questions/1.json
def destroy
@project_question.destroy
respond_to do |format|
format.html { redirect_to project_questions_url }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_project_question
@project_question = ProjectQuestion.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def project_question_params
params[:project_question].permit(:id, :title, :content, :project_id, :user_id,
project_answer_atttibutes: [:id, :answer, :project_question_id, :user_id]
)
end
end
你定义的东西。您的视图中是否有任何具有“ProjectQuestion”实例的变量？ –
'new_project_project_question_project_answer_path' yuck ... – max
我不知道这是什么意思？我在每个模型中都有一个属性，名为：id和每个belongs_to模型中具有parent_id的属性。我认为这就是为什么我应该使用项目问题ID。 – Mel