fix assets_manifest (rename to assets_manifests)

Author: tkuchiki

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 * Your contribution here!
 
-* Added option ':assets_manifest' to support custom manifest file path ([#215](https://github.com/capistrano/rails/pull/215))
+* Added option ':assets_manifests' to support custom manifest file path ([#216](https://github.com/capistrano/rails/pull/216))
 
 # [1.3.1][] (Nov 21 2017)
 

README.md

@@ -71,9 +71,9 @@ set :assets_roles, [:web, :app]
 # This should match config.assets.prefix in your rails config/application.rb
 set :assets_prefix, 'prepackaged-assets'
 
-# Defaults to nil
+# Defaults to ["/path/to/release_path/public/#{fetch(:assets_prefix)}/.sprockets-manifest*", "/path/to/release_path/public/#{fetch(:assets_prefix)}/manifest*.*"]
 # This should match config.assets.manifest in your rails config/application.rb
-set :assets_manifest, 'app/assets/config/manifest.js'
+set :assets_manifests, ['app/assets/config/manifest.js']
 
 # RAILS_GROUPS env value for the assets:precompile task. Default to nil.
 set :rails_assets_groups, :assets

lib/capistrano/tasks/assets.rake

@@ -102,10 +102,7 @@ namespace :deploy do
     end
 
     def detect_manifest_path
-      manifests = fetch(:assets_manifest) ? [fetch(:assets_manifest)] : %w[.sprockets-manifest* manifest*.*]
-      manifests.each do |pattern|
-        manifest_path = fetch(:assets_manifest) ? [fetch(:assets_manifest)] : ["public", fetch(:assets_prefix), pattern]
-        candidate = release_path.join(*manifest_path)
+      fetch(:assets_manifests).each do |candidate|
         return capture(:ls, candidate).strip.gsub(/(\r|\n)/, ' ') if test(:ls, candidate)
       end
       msg = 'Rails assets manifest file not found.'
@@ -133,5 +130,10 @@ namespace :load do
   task :defaults do
     set :assets_roles, fetch(:assets_roles, [:web])
     set :assets_prefix, fetch(:assets_prefix, 'assets')
+    set :assets_manifests, -> {
+      %w[.sprockets-manifest* manifest*.*].map do |pattern|
+        release_path.join("public", fetch(:assets_prefix), pattern)
+      end
+    }
   end
 end