What is the correct way to use helpers in Ruby on Rails?

Question

Ruby on Rails

Good afternoon! I apologize in advance if I make a mistake in the terminology: a beginner in RoR, I study the language by typing and intensively studying search queries, but I could not get a clear answer to this question, unfortunately.
There are two tables Journals (a list of journals) and Publications (a list of issues for each journal), the relationship is one to many. I created the corresponding objects in RoR, there were no problems at all for journals - I managed to create a view for creating, editing, viewing, displaying a list. Now I'm approaching the creation of similar views for publications, and a couple of times I came across the following problem with using helpers in .html.erb.
I want to show the "Go to the list of all journal publications" button when showing the journal (show.html.erb for journals). As I understand it, you need to write a link_to of the following form:

<%= link_to 'К списку публикаций журнала', journal_publications_path (@journal) %>

Here, journal_publications_path is a helper, which, as I understand it, should have been created based on routing in RoR (I post the entire routing so as not to accidentally cut off an important piece):

Prefix Verb   URI Pattern                                           Controller#Action
        new_user_session GET    /users/sign_in(.:format)                              devise/sessions#new
            user_session POST   /users/sign_in(.:format)                              devise/sessions#create
    destroy_user_session DELETE /users/sign_out(.:format)                             devise/sessions#destroy
           user_password POST   /users/password(.:format)                             devise/passwords#create
       new_user_password GET    /users/password/new(.:format)                         devise/passwords#new
      edit_user_password GET    /users/password/edit(.:format)                        devise/passwords#edit
                         PATCH  /users/password(.:format)                             devise/passwords#update
                         PUT    /users/password(.:format)                             devise/passwords#update
cancel_user_registration GET    /users/cancel(.:format)                               devise/registrations#cancel
       user_registration POST   /users(.:format)                                      devise/registrations#create
   new_user_registration GET    /users/sign_up(.:format)                              devise/registrations#new
  edit_user_registration GET    /users/edit(.:format)                                 devise/registrations#edit
                         PATCH  /users(.:format)                                      devise/registrations#update
                         PUT    /users(.:format)                                      devise/registrations#update
                         DELETE /users(.:format)                                      devise/registrations#destroy
         persons_profile GET    /persons/profile(.:format)                            persons#profile
        article_comments GET    /articles/:article_id/comments(.:format)              comments#index
                         POST   /articles/:article_id/comments(.:format)              comments#create
     new_article_comment GET    /articles/:article_id/comments/new(.:format)          comments#new
    edit_article_comment GET    /articles/:article_id/comments/:id/edit(.:format)     comments#edit
         article_comment GET    /articles/:article_id/comments/:id(.:format)          comments#show
                         PATCH  /articles/:article_id/comments/:id(.:format)          comments#update
                         PUT    /articles/:article_id/comments/:id(.:format)          comments#update
                         DELETE /articles/:article_id/comments/:id(.:format)          comments#destroy
                articles GET    /articles(.:format)                                   articles#index
                         POST   /articles(.:format)                                   articles#create
             new_article GET    /articles/new(.:format)                               articles#new
            edit_article GET    /articles/:id/edit(.:format)                          articles#edit
                 article GET    /articles/:id(.:format)                               articles#show
                         PATCH  /articles/:id(.:format)                               articles#update
                         PUT    /articles/:id(.:format)                               articles#update
                         DELETE /articles/:id(.:format)                               articles#destroy
    journal_publications GET    /journals/:journal_id/publications(.:format)          publications#index
                         POST   /journals/:journal_id/publications(.:format)          publications#create
 new_journal_publication GET    /journals/:journal_id/publications/new(.:format)      publications#new
edit_journal_publication GET    /journals/:journal_id/publications/:id/edit(.:format) publications#edit
     journal_publication GET    /journals/:journal_id/publications/:id(.:format)      publications#show
                         PATCH  /journals/:journal_id/publications/:id(.:format)      publications#update
                         PUT    /journals/:journal_id/publications/:id(.:format)      publications#update
                         DELETE /journals/:journal_id/publications/:id(.:format)      publications#destroy
                journals GET    /journals(.:format)                                   journals#index
                         POST   /journals(.:format)                                   journals#create
             new_journal GET    /journals/new(.:format)                               journals#new
            edit_journal GET    /journals/:id/edit(.:format)                          journals#edit
                 journal GET    /journals/:id(.:format)                               journals#show
                         PATCH  /journals/:id(.:format)                               journals#update
                         PUT    /journals/:id(.:format)                               journals#update
                         DELETE /journals/:id(.:format)                               journals#destroy
          articles_index GET    /articles/index(.:format)                             articles#index
                    root GET    /                                                     articles#index

But when creating such a link, the following error is generated on this line:

SyntaxError in JournalsController#show
/home/rubyuser/ruby/blog/app/views/journals/show.html.erb:14: syntax error, unexpected ( arg, expecting keyword_do or '{' or '(' ...а', journal_publications_path (journal_id), :class => 'journ... ... ^ /home/rubyuser/ruby/blog/app/views/journals/show.html.erb:14: syntax error, unexpected ',', expecting ')' ...publications_path (journal_id), :class => 'journalslist-gray... ... ^

Trying to change @journal to @journal.journal_id or @journal.id didn't fix the error. Help, please, where I do not understand correctly?
Server performance characteristics: Ubuntu 14.04, Ruby 2.2.1, Rails 4.2.4, the application is running on WEBrick.

Answer 1

You have an extra space before the parenthesis. Must be

<%= link_to 'К списку публикаций журнала', journal_publications_path(@journal) %>

Answer 2

About how, I'm used to Delphi, in which you can put as many spaces as you like between the name of the procedure and the variables being transferred. Thank you very much for your help, I'll keep it in mind.