Rails 5 compatibility

[jasonnoble]

Brand new rails 5.0.0 app, add the following to Gemfile:

gem 'bootstrap-generators'

Bundle, and rails generate bootstrap:install -f.

Generate a scaffold: rails g scaffold car make:string model:string year:integer price:decimal

Start up rails server, visit http://localhost:3000/cars.

Error:

ActionView::Template::Error (The `content_tag_for` method has been removed from Rails. To continue using it, add the `record_tag_helper` gem to your Gemfile:
  gem 'record_tag_helper', '~> 1.0'

Adding the record_tag_helper line fixes the issue.

Maybe bootstrap-generators should add a runtime_dependency on record_tag_helper?

[hamadata]

Hi,

Your guess is correct.
content_tag_for is removed in Rails5, so we need to add gem 'record_tag_helper' to use it.

discussion: rails/rails#18337
tutorial: https://rubyplus.com/articles/3411-Tag-View-Helpers-in-Rails-5

[ttilberg]

Based on this comment in the discussion mentioned above, you can get around this easily.

content_tag_for (removed) is a wrapper for content_for (still here) with some class and id attribution.

After running rails generate bootstrap:install you can edit the installed template file:

# lib/templates/erb/scaffold/index.html.erb : 22ish

    <tbody>
      <%% @<%= plural_table_name%>.each do |<%= singular_table_name %>| %>
        <%%= content_tag :tr, id: dom_id(<%= singular_table_name %>), class: dom_class(<%= singular_table_name %>) do %>
          <% attributes.each do |attribute| -%>
            <td><%%= <%= singular_table_name %>.<%= attribute.name %> %></td>
          <% end -%>
          <td><%%= link_to 'Show', <%= singular_table_name %> %></td>
          <td><%%= link_to 'Edit', edit_<%= singular_table_name %>_path(<%= singular_table_name %>) %></td>
          <td><%%= link_to 'Destroy', <%= singular_table_name %>, method: :delete, data: { confirm: 'Are you sure?' } %></td>
        <%% end %>
      <%% end %>
    </tbody>

This removes the need to require a gem just to use content_tag_for.

I've submitted a PR, but this project hasn't moved in quite some time, so I'm not sure if it will get accepted. I've also only tested against my current Rails 5.1 project. Hopefully you find this useful!