Question

所以当我从我的ui按下我的rsvp按钮时，我收到此错误。也许我的路线有问题或我的控制器有问题。我现在不太确定。我对rails非常陌生，而且我长期坚持这个问题。当我做一些更改时，会弹出另一个错误。我真的很感激一些帮助

class RsvpController < ApplicationController

 def create
    rsvp = current_user.rsvp.build({post_id: params[:id]})
    if rsvp.save 
    end
 end

end

发布控制器

class PostsController < ApplicationController
  before_action :set_post, only: [:show, :edit, :update, :destroy]

  # GET /posts
  # GET /posts.json
  def index
    @posts = Post.all
  end

  # GET /posts/1
  # GET /posts/1.json
  def show
     @post = Post.find(params[:id])

  end

  # GET /posts/new
  def new
    @post = Post.new
  end

  # GET /posts/1/edit
  def edit
   unless current_user == @post.user
    redirect_back fallback_location: root_path, notice: 'User is not owner'
   end
  end

  # POST /posts
  # POST /posts.json
  def create
    @post = Post.new(post_params)

    respond_to do |format|
      if @post.save
        format.html { redirect_to @post, notice: 'Post was successfully created.' }
        format.json { render :show, status: :created, location: @post }
      else
        format.html { render :new }
        format.json { render json: @post.errors, status: :unprocessable_entity }
      end
    end
  end

  # PATCH/PUT /posts/1
  # PATCH/PUT /posts/1.json
  def update
    respond_to do |format|
      if @post.update(post_params)
        format.html { redirect_to @post, notice: 'Post was successfully updated.' }
        format.json { render :show, status: :ok, location: @post }
      else
        format.html { render :edit }
        format.json { render json: @post.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /posts/1
  # DELETE /posts/1.json
  def destroy
    @post.destroy
    respond_to do |format|
      format.html { redirect_to posts_url, notice: 'Post was successfully destroyed.' }
      format.json { head :no_content }
    end
  end



  private
    # Use callbacks to share common setup or constraints between actions.
    def set_post
      @post = Post.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def post_params
      params.require(:post).permit(:date, :user_id, :description, :name, :address)
    end
    load_and_authorize_resource
def create
  @rsvp=rsvp.new
end

end

=

的routes.rb

 Rails.application.routes.draw do
  mount RailsAdmin::Engine => '/admin', as: 'rails_admin'
  resources :posts
  devise_for :users
  root 'home#index'
  get 'home/ruby_meetup'

  resources :posts do
  post 'rsvp', to: 'rsvps#create', on: :member
end

此外，我想要显示/注册的用户数量，但我会在我的ui上显示随机数字和字母。我的节目页面有什么不对的吗？

show.html.erb

<p id="notice"><%= notice %></p>


<p>
  <strong>Date:</strong>
  <%= @post.date %>
</p>

<p>
    <strong>Name:</strong>
    <%= @post.name %>
</p>

<p>
  <strong>User_id:</strong>
  <%= @post.user_id %>
</p>
<p><strong>Address:</strong> <%= @post.address %></p>
<p>
  <strong>Description:</strong>
  <%= @post.description %>
</p>

<p>
    <strong>registered:</strong>
    <%=@post.user %>
</p>


<% if current_user == @post.user %>
 <%= link_to 'Edit', edit_post_path(@post) %> |
<%end%>
 <%= link_to 'Back', posts_path %>

<div class="rsvp"><%= button_to "Rsvp now", rsvp_post_path(@post), class: "btn btn-primary" %></div>






<div class="map"><%= image_tag "http://maps.googleapis.com/maps/api/staticmap?center=#{@post.latitude},#{@post.longitude}&markers=#{@post.latitude},#{@post.longitude}&zoom=12&size=450x400&key=AIzaSyCKzKMEhSNgwSXf7WV71pHWgzdpMkPn8W4",
class: 'img-fluid img-rounded', alt: "#{@post} on the map"%>
</div>

Answer 1

控制器类名称应该是RsvpsController当前的RsvpController，请注意s后Rsvp丢失了。

Answer 2

将您的路线更改为：

post 'rsvp', to: 'rsvp#create', on: :member

未初始化的常量RsvpsController

2 个答案: