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Contents
UNGUARDED_URL_USAGE = /\surl\(/.freeze
ABSOLUTE_ASSET_USAGE = /(?:image-path|image-url|asset-path|asset-url)\(["']\/assets/.freeze
namespace :sass do
desc "Check all SCSS for 404-creating problems, takes place of govuk-lint"
task check: :environment do
scss_files = File.expand_path(
"../../app/assets/stylesheets/**/*.scss", __dir__
)
matching_lines = Dir[scss_files].each_with_object([]) do |scss_file, matching|
File.readlines(scss_file).each_with_index do |line, number|
matching << "Unguarded url usage: #{scss_file}:#{number + 1}" if line =~ UNGUARDED_URL_USAGE
matching << "Absolute /assets usage: #{scss_file}:#{number + 1}" if line =~ ABSOLUTE_ASSET_USAGE
end
end
if matching_lines.any?
raise <<~MSG
One or more problems exist:
Unguarded url usage
-------------------
Do not use instances of url(...) to refer to images within this gem.
Prefer the SASS function image-url. Unguarded url references won't work in
Rails 4 and up due to MD5 hashes in asset filenames. Your asset will 404 in
production Rails 4 apps.
Absolute /assets usage
----------------------
When using any of the image/asset helpers, don't refer to /assets absolutely.
For example,
image-url('/assets/govuk_admin_template/header-crown.png')
should instead be
image-url('govuk_admin_template/header-crown.png')
If Sprockets can't find the image on precompilation, it won't rewrite the
URL and will pass it through unaltered. This usually means it will 404.
Problems:
#{matching_lines.join("\n ")}
MSG
end
end
end
Version data entries
4 entries across 4 versions & 1 rubygems