Ruby on Rails：排序和突出显示

Question

This is the index function in movies.controller.rb file.

 def index
         @movies = Movie.find(:all, :order => (params[:sort_by]))
         @sort_column = params[:sort_by]
      end

This is the view file. -# This file is app/views/movies/index.html.haml %h1 All Movies

%table#movies
  %thead
    %tr
      %th{:class=>("hilite" if @sort_column == "title")}= link_to 'Movie Title', movies_path(:sort_by=>'title'), :id=>"title_header"     
      %th Rating
      %th{:class=>("hilite" if @sort_column == "release_date")}= link_to 'Release Date', movies_path(:sort_by=>'release_date'), :id=>"release_date_header"
      %th More Info
  %tbody
    - @movies.each do |movie|
      %tr
        %td= movie.title 
        %td= movie.rating
        %td= movie.release_date
        %td= link_to "More about #{movie.title}", movie_path(movie)

= link_to 'Add new movie', new_movie_path

default.css

table#movies th.hilite {
  background-color: yellow;
}

It gives me the following error in the first line of index:

Couldn't find all Movies with 'id': (all, {:order=>nil})

I need to sort the list of movies by title and release date and also highlight it yellow. But, with this code, neither is it getting highlighted, nor sorted. Where lies the error?

Answer 1

If you are using Rails 3 or 4, the find command has changed. It no longer takes a symbol as it's first argument (read more here: http://api.rubyonrails.org/classes/ActiveRecord/FinderMethods.html#method-i-find )

The Rails 3 or 4 equivalent would be:

@movies = Movie.order(params[:sort_by])