Question

我在这里遇到了一些困境。

我有一个评论脚手架和一个电影脚手架

当去电影页面并创建新评论时，我会去/ movies / 12 / comments / new（12是id）

并且确实是我的控制器

def new
    @movie = Movie.find(params[:movie_id])
    @comment = @movie.comments.new 
    @search = Movie.search(params[:q])

    respond_to do |format|
      format.html # new.html.erb
      format.json { render json: @comment }
    end
  end

但是当我启动到heroku时，我得到了这个错误

*Processing by CommentsController#new as HTML
 ActiveRecord::StatementInvalid (PG::Error: ERROR:  invalid input syntax for integer: "movie_id"

 Completed 500 Internal Server Error in 636ms
LINE 1: ...  "movies".* FROM "movies"  WHERE "movies"."id" = 'movie_id'...

Parameters: {"movie_id"=>"the-social-network"}
app/controllers/comments_controller.rb:99:in `load_movie'*

我尝试删除@movie = Movie.find(params[:movie_id])或最后添加.to_i，如此处Why does this :id in Rails not work with Postgresql but it does work with MySQL?所述，但仍然没有运气

有什么想法吗？谢谢！

Comment_form（查看）

<%= simple_form_for(@comment) do |f| %>
  <%= f.error_notification %>

  <div class="form-inputs">
    <%= f.input :subject %>
    <%= f.input :body %>
    <%= f.input :movie_id %>
  </div>

  <div class="form-actions">
    <%= f.button :submit %>
  </div>
<% end %>

Movie.rb

class Movie < ActiveRecord::Base
  attr_accessible :title


 has_many :comments, :dependent => :destroy

      extend FriendlyId
  friendly_id :titleyear, use: :history
  def titleyear
    "#{title} #{id}"
  end

end

Comment.rb

class Comment < ActiveRecord::Base
  attr_accessible :body, :movie_id, :subject, :user_id

  belongs_to :user
  belongs_to :movie




end

Comments_controller.rb

class CommentsController < ApplicationController
  # GET /comments
  # GET /comments.json
  before_filter :load_movie
  before_filter :authenticate_user!, only: [:new,:create,:edit,:destroy]



  def index
    @comments = @movie.comments.all
    @search = Movie.search(params[:q])

    respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @comments }
    end
  end

  # GET /comments/1
  # GET /comments/1.json
  def show
    @comment = Comment.find(params[:id])
    @search = Movie.search(params[:q])

    respond_to do |format|
      format.html # show.html.erb
      format.json { render json: @comment }
    end
  end

  # GET /comments/new
  # GET /comments/new.json
  def new
    @movie = Movie.find(params[:movie_id])
    @comment = @movie.comments.new 
    @search = Movie.search(params[:q])

    respond_to do |format|
      format.html # new.html.erb
      format.json { render json: @comment }
    end
  end

  # GET /comments/1/edit
  def edit
    @comment = Comment.find(params[:id])
    @search = Movie.search(params[:q])

  end

  # POST /comments
  # POST /comments.json
  def create
    @comment = Comment.new(params[:comment])
    @search = Movie.search(params[:q])

    respond_to do |format|
      if @comment.save
        format.html { redirect_to :back }
        format.json { render json: @comment, status: :created, location: @comment }
      else
        format.html { render action: "new" }
        format.json { render json: @comment.errors, status: :unprocessable_entity }
      end
    end
  end

  # PUT /comments/1
  # PUT /comments/1.json
  def update
    @comment = Comment.find(params[:id])
    @search = Movie.search(params[:q])

    respond_to do |format|
      if @comment.update_attributes(params[:comment])
        format.html { redirect_to (@movie), notice: 'Comment was successfully updated.' }
        format.json { head :no_content }
      else
        format.html { render action: "edit" }
        format.json { render json: @comment.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /comments/1
  # DELETE /comments/1.json
  def destroy
    @comment = Comment.find(params[:id])
    @comment.destroy

    respond_to do |format|
      format.html { redirect_to comments_url }
      format.json { head :no_content }
    end
  end

private
    def load_movie
      @movie = Movie.find_by_id(:movie_id)
    end


end

Answer 1

movie_id参数，正如您传递的那样，实际上不是id，而是字符串：Parameters: {"movie_id"=>"the-social-network"}。

您的视图中可能存在错误配置的内容。确保您传递的是movie.id而不是其他内容。

编辑：

收到的错误表明正在从the-social-network网址段传递字符串movie_id。您需要通过访问传递号码的路径作为第二个参数来访问您的表单，例如http://yoursite/movies/2/comments/new，而不是http://yoursite/movies/the-social-network/comments/new。

Heroku + Rails错误ActiveRecord :: StatementInvalid

1 个答案: