On Sunday, 17 May 2015 15:08:07 UTC-4, Ruby-Forum.com User wrote:
>
> I get the following error:
>
> 2015-05-17T17:25:40.349230+00:00 app[web.1]: Started GET "/movies/1" for
> 160.9.0.153 at 2015-05-17 17:25:40 +0000
> 2015-05-17T17:25:40.423697+00:00 app[web.1]: Completed 500 Internal
> Server Error in 67ms
> 2015-05-17T17:25:40.355931+00:00 app[web.1]: Processing by
> MoviesController#show as HTML
> 2015-05-17T17:25:40.425095+00:00 app[web.1]:
> 2015-05-17T17:25:40.406984+00:00 app[web.1]: Movie Load (2.4ms)
> SELECT "movies".* FROM "movies" WHERE "movies"."id" = $1 LIMIT 1
> [["id", 1]]
> 2015-05-17T17:25:40.425098+00:00 app[web.1]: NoMethodError (undefined
> method `sismember' for nil:NilClass):
> 2015-05-17T17:25:40.425100+00:00 app[web.1]: app/models/movie.rb:20:in
> `cart_action'
> 2015-05-17T17:25:40.425102+00:00 app[web.1]:
> 2015-05-17T17:25:40.425101+00:00 app[web.1]:
> app/controllers/movies_controller.rb:9:in `show'
> 2015-05-17T17:25:40.425104+00:00 app[web.1]:
> 2015-05-17T17:25:41.951208+00:00 heroku[router]: at=info method=GET
> path="/movies/4" host=hidden-savannah-5835.herokuapp.com
> request_id=cbb36b63-06ee-4da0-992d-6d512d431ea4 fwd="160.9.0.153"
> dyno=web.1 connect=0ms service=17ms status=500 bytes=1714
> 2015-05-17T17:25:41.932183+00:00 app[web.1]: Started GET "/movies/4" for
> 160.9.0.153 at 2015-05-17 17:25:41 +0000
> 2015-05-17T17:25:41.941428+00:00 app[web.1]: Completed 500 Internal
> Server Error in 5ms
> 2015-05-17T17:25:41.935883+00:00 app[web.1]: Processing by
> MoviesController#show as HTML
> 2015-05-17T17:25:41.935891+00:00 app[web.1]: Parameters: {"id"=>"4"}
> 2015-05-17T17:25:41.939396+00:00 app[web.1]: Movie Load (2.2ms)
> SELECT "movies".* FROM "movies" WHERE "movies"."id" = $1 LIMIT 1
> [["id", 4]]
> 2015-05-17T17:25:41.944520+00:00 app[web.1]:
> 2015-05-17T17:25:41.944523+00:00 app[web.1]: NoMethodError (undefined
> method `sismember' for nil:NilClass):
> 2015-05-17T17:25:41.944525+00:00 app[web.1]: app/models/movie.rb:20:in
> `cart_action'
> 2015-05-17T17:25:41.944526+00:00 app[web.1]:
> app/controllers/movies_controller.rb:9:in `show'
> 2015-05-17T17:25:41.944528+00:00 app[web.1]:
> 2015-05-17T17:25:41.944529+00:00 app[web.1]:
>
> movie.rb (model)
>
> class Movie < ActiveRecord::Base
> has_many :purchases
> has_many :buyers, through: :purchases
>
> before_save :embed_video_url
>
> def poster
> "http://ia.media-imdb.com/images/M/#{poster_url}";
> end
>
> def imdb
> "http://www.imdb.com/title/#{imdb_id}/";
> end
>
> def embed_video_url
> self.video_url =
> "//www.youtube.com/embed/#{video_url.split('v=')[1].split('&list')[0]}
> <http://www.youtube.com/embed/#%7Bvideo_url.split('v=')[1].split('&list')[0]%7D>"
>
>
> end
>
> def cart_action(current_user_id)
> if $redis.sismember "cart#{current_user_id}", id
> "Remove from"
> else
> "Add to"
> end
> end
> end
>
> movies_controller.rb
>
> class MoviesController < ApplicationController
>
> def index
> @movies = Movie.all
> end
>
> def show
> @movie = Movie.find(params[:id])
> @cart_action = @movie.cart_action current_user.try :id
> end
>
> end
>
> The weird about this error is that the application run without any
> problem locally but when I deployed to heroku I can see the first page
> but when I click to a movie or trying to log in i get error.
>
> Any help?
>
>
You did not include the code that sets $redis, and I suspect that's where
the problem is. Connecting to Redis on Heroku may be slightly different
that local, since dynos are not guaranteed to continue existing between
requests.
--Matt Jones
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