Class: Webpacker::Manifest

Inherits:
Object
  • Object
show all
Defined in:
lib/webpacker/manifest.rb

Overview

Singleton registry for accessing the packs path using a generated manifest. This allows javascript_pack_tag, stylesheet_pack_tag, asset_pack_path to take a reference to, say, “calendar.js” or “calendar.css” and turn it into “/packs/calendar-1016838bab065ae1e314.js” or “/packs/calendar-1016838bab065ae1e314.css”.

When the configuration is set to on-demand compilation, with the ‘compile: true` option in the webpacker.yml file, any lookups will be preceded by a compilation if one is needed.

Defined Under Namespace

Classes: MissingEntryError

Instance Method Summary collapse

Constructor Details

#initialize(webpacker) ⇒ Manifest

Returns a new instance of Manifest.



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# File 'lib/webpacker/manifest.rb', line 13

def initialize(webpacker)
  @webpacker = webpacker
end

Instance Method Details

#lookup(name, pack_type = {}) ⇒ Object

Computes the relative path for a given Webpacker asset using manifest.json. If no asset is found, returns nil.

Example:

Webpacker.manifest.lookup('calendar.js') # => "/packs/calendar-1016838bab065ae1e122.js"



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# File 'lib/webpacker/manifest.rb', line 41

def lookup(name, pack_type = {})
  compile if compiling?

  find(full_pack_name(name, pack_type[:type]))
end

#lookup!(name, pack_type = {}) ⇒ Object

Like lookup, except that if no asset is found, raises a Webpacker::Manifest::MissingEntryError.



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# File 'lib/webpacker/manifest.rb', line 48

def lookup!(name, pack_type = {})
  lookup(name, pack_type) || handle_missing_entry(name, pack_type)
end

#lookup_pack_with_chunks(name, pack_type = {}) ⇒ Object 



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# File 'lib/webpacker/manifest.rb', line 21

def lookup_pack_with_chunks(name, pack_type = {})
  compile if compiling?

  manifest_pack_type = manifest_type(pack_type[:type])
  manifest_pack_name = manifest_name(name, manifest_pack_type)
  find("entrypoints")[manifest_pack_name]["assets"][manifest_pack_type]
rescue NoMethodError
  nil
end

#lookup_pack_with_chunks!(name, pack_type = {}) ⇒ Object 



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# File 'lib/webpacker/manifest.rb', line 31

def lookup_pack_with_chunks!(name, pack_type = {})
  lookup_pack_with_chunks(name, pack_type) || handle_missing_entry(name, pack_type)
end

#refresh ⇒ Object 



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# File 'lib/webpacker/manifest.rb', line 17

def refresh
  @data = load
end