Heroku + Rails Error ActiveRecord::StatementInvalid

Question

I'm having a bit of a dilemma here.

I have a Comments scaffold and a Movies scaffold

When going to a movie page and creating a new comment, i go here /movies/12/comments/new (12 being the id)

And did is my controller

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

But when i launch to heroku I get this error

*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'*

I tried removing the @movie = Movie.find(params[:movie_id]) or adding .to_i at the end, as stated here Why does this :id in Rails not work with Postgresql but it does work with MySQL?, but still no luck

Any ideas? Thanks!

Comment_form (view)

<%= 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

The movie_id parameter, as you're passing it, is not actually an id, but a string: Parameters: {"movie_id"=>"the-social-network"}.

Something is probably misconfigured in your view. Ensure that you're passing the movie.id and not something else.

EDIT:

The error being received is indicating that the string the-social-network is being passed from the movie_id URL segment. You need to access your form by visiting a path that passes in a number as the second parameter, like http://yoursite/movies/2/comments/new, rather than http://yoursite/movies/the-social-network/comments/new.