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Rails 5.2.1 triggers `ActionView::Template::Error (undefined not callable)`

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#166 2 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
32/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
bootstrap, javascript, rails

Research direction

Reproduce the Rails 5.2.1 failure from app/views/layouts/application.html.erb with the reported asset configuration. Start with the require 'autoprefixer-rails' line in lib/bootstrap/engine.rb, then inspect application.scss and application.js to isolate the interaction. Done means the first page loads without ActionView::Template::Error while Bootstrap assets still work.

Written by the indexing model from the issue text.

Description

Problem

Having Rails 5.2.1, server successfully starts up but on the first page load, an error appears from my application.html.erb:

ActionView::Template::Error (undefined not callable):
     5:     <%= csrf_meta_tags %>
     6:     <%= csp_meta_tag %>
     7:
     8:     <%= stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track': 'reload' %>
     9:     <%= javascipt_include_tag 'application', 'data-turbolinks-track': 'reload' %>
    10:

(execjs):1
app/views/layouts/application.html.erb:8:in `_app_views_layouts_application_html_erb__765064803_56530640'
Configuration

From bundle list:

  • Rails 5.2.1
  • autoprefixer-rails 9.3.1
  • bootstrap 4.1.3
  • jquery-rails 4.3.3
  • sprockets 3.7.2
  • sprockets-rails 3.2.1

My application.scss has @import "bootstrap":

@import 'my-application-stuff/*';
@import 'bootstrap';
body {
  ...
}

My application.js is

//= require rails-ujs
//= require jquery
//= require activestorage
//= require turbolinks
//= require jquery3
//= require popper
//= require bootstrap-sprockets
//= require_tree .
Hints

After trying by commenting out excerpts of code and restarting, I came to the conclusion that the culprit is require 'autoprefixer-rails from engine.rb. However, I could not figure out why but when commenting this line, I can successfully load my pages with bootstrap.

Comments

My issue seems to be different from https://github.com/twbs/bootstrap-rubygem/issues/164, hence a different issue

After seeing https://github.com/twbs/bootstrap-rubygem/issues/162, just in case, I have Node v11.1.0 with NPM 6.4.1

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