我有两个资源问题和答案。我有嵌套在问题中的答案。我很困惑，因为当我在 questions/:id/answers 的答案索引上时，如果我点击编辑按钮，我会得到
Couldn't find Answer with id=edit [WHERE "answers"."question_id" = ?]
但我知道 id 是什么，所以如果输入我的本地主机浏览器 questions/:id/answers/:id/edit 它会将我带到编辑页面
我的浏览器这样说
localhost:3000/questions/2/answers//edit
这是我的答案控制器的副本
class AnswersController < ApplicationController
before_filter :find_the_question
# GET /answers
# GET /answers.json
def index
@answers = @question.answers
end
# GET /answers/1
# GET /answers/1.json
def show
@answer = @question.answers.find(params[:id])
end
# GET /answers/new
def new
@answer = @question.answers.new
end
# GET /answers/1/edit
def edit
@answer = @question.answers.find(params[:id])
end
# POST /answers
# POST /answers.json
def create
@answer = @question.answers.new(answer_params)
respond_to do |format|
if @answer.save
format.html { redirect_to [@question, @answer], notice: 'Answer was successfully created.' }
format.json { render action: 'show', status: :created, location: @answer }
else
format.html { render action: 'new' }
format.json { render json: @answer.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /answers/1
# PATCH/PUT /answers/1.json
def update
@answer = @question.answers.find(params[:id])
respond_to do |format|
if @answer.update_attributes(answer_params)
format.html { redirect_to question_answer_path(@question), notice: 'Answer was successfully updated.' }
format.json { head :no_content }
else
format.html { render action: 'edit' }
format.json { render json: @answer.errors, status: :unprocessable_entity }
end
end
end
# DELETE /answers/1
# DELETE /answers/1.json
def destroy
@answer = @question.answers.find(params[:id])
@answer.destroy
respond_to do |format|
format.html { redirect_to question_answers_path(@question) }
format.json { head :no_content }
end
end
private
def find_the_question
@question = Question.find(params[:question_id])
end
# Use callbacks to share common setup or constraints between actions.
# def set_answer
# @answer = Answer.find(params[:id])
# end
# Never trust parameters from the scary internet, only allow the white list through.
def answer_params
params.require(:answer).permit(:user_id, :question_id, :body, :created_at, :updated_at)
end
end
和我的答案索引
<h1>Listing answers</h1>
<table>
<thead>
<tr>
<th>User</th>
<th>Question</th>
<th>Body</th>
<th>Created</th>
<th>Updated</th>
<th></th>
</tr>
</thead>
<tbody>
<% @answers.each do |answer| %>
<tr>
<td><%= answer.user_id %></td>
<td><%= answer.question_id %></td>
<td><%= answer.body %></td>
<td><%= answer.created_at %></td>
<td><%= answer.updated_at %></td>
<td><%= link_to 'Show', [@question, @answer] %></td>
<td><%= link_to 'Edit', edit_question_answer_path(@question, @answer) %></td>
<td><%= link_to 'Destroy', [@question, @answer], method: :delete, data: { confirm: 'Are you sure?' } %></td>
</tr>
<% end %>
</tbody>
</table>
<br>
<%= link_to 'New Answer', new_question_answer_path(@question) %>
我的问题控制器不确定是否需要
class QuestionsController < ApplicationController
before_action :set_question, only: [:show, :edit, :update, :destroy]
# GET /questions
# GET /questions.json
def index
@questions = Question.all
end
# GET /questions/1
# GET /questions/1.json
def show
@question = Question.find(params[:id])
@answers = @question.answers
end
# GET /questions/new
def new
@question = Question.new
respond_to do |format|
format.html
format.json { render json: @question}
end
end
# GET /questions/1/edit
def edit
@question = Question.find(params[:id])
end
# POST /questions
# POST /questions.json
def create
@question = Question.new(question_params)
respond_to do |format|
if @question.save
format.html { redirect_to @question, notice: 'Question was successfully created.' }
format.json { render action: 'show', status: :created, location: @question }
else
format.html { render action: 'new' }
format.json { render json: @question.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /questions/1
# PATCH/PUT /questions/1.json
def update
respond_to do |format|
if @question.update(question_params)
format.html { redirect_to @question, notice: 'Question was successfully updated.' }
format.json { head :no_content }
else
format.html { render action: 'edit' }
format.json { render json: @question.errors, status: :unprocessable_entity }
end
end
end
# DELETE /questions/1
# DELETE /questions/1.json
def destroy
@question.destroy
respond_to do |format|
format.html { redirect_to questions_url }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_question
@question = Question.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def question_params
params.require(:question).permit(:name, :body, :question_type_id, :created_at, :updated_at,
:description, :user_question_set_id, :priority_id)
end
end
我的问题_form副本
<%= form_for(@question) do |f| %>
<% if @question.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@question.errors.count, "error") %> prohibited this question from being saved:</h2>
<ul>
<% @question.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :name %><br>
<%= f.text_field :name %>
</div>
<div class="field">
<%= f.label :question_type_id %><br>
<%= f.number_field :question_type_id %>
</div>
<div class="field">
<%= f.label :priority_id %><br>
<%= f.number_field :priority_id %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
这是我的 _form 的副本以获取答案
<%= form_for([@question, @answer]) do |f| %>
<% if @answer.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@answer.errors.count, "error") %> prohibited this answer from being saved:</h2>
<ul>
<% @answer.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :user_id %><br>
<%= f.text_field :user_id %>
</div>
<div class="field">
<%= f.label :question_id %><br>
<%= f.text_field :question_id %>
</div>
<div class="field">
<%= f.label :body %><br>
<%= f.text_field :body %>
</div>
<div class="field">
<%= f.label :created_at %><br>
<%= f.date_select :created_at %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
抱歉这个时髦的问题希望有人知道怎么回事谢谢