Module: Jammit::Helper

Defined in:
lib/jammit/helper.rb

Overview

The Jammit::Helper module, which is made available to every view, provides helpers for writing out HTML tags for asset packages. In development you get the ordered list of source files – in any other environment, a link to the cached packages.

Constant Summary collapse

DATA_URI_START = 
"<!--[if (!IE)|(gte IE 8)]><!-->"
DATA_URI_END = 
"<!--<![endif]-->"
MHTML_START = 
"<!--[if lte IE 7]>"
MHTML_END = 
"<![endif]-->"

Instance Method Summary collapse

Instance Method Details

#include_javascripts(*packages) ⇒ Object

Writes out the URL to the bundled and compressed javascript package, except in development, where it references the individual scripts.



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# File 'lib/jammit/helper.rb', line 27

def include_javascripts(*packages)
  html_safe packages.map {|pack|
    should_package? ? Jammit.asset_url(pack, :js) : Jammit.packager.individual_urls(pack.to_sym, :js)
  }.flatten.map {|pack|
    javascript_include_tag pack
  }.join("\n")
end

#include_stylesheets(*packages) ⇒ Object

If embed_assets is turned on, writes out links to the Data-URI and MHTML versions of the stylesheet package, otherwise the package is regular compressed CSS, and in development the stylesheet URLs are passed verbatim.



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# File 'lib/jammit/helper.rb', line 17

def include_stylesheets(*packages)
  options = packages.extract_options!
  return html_safe(individual_stylesheets(packages, options)) unless should_package?
  disabled = (options.delete(:embed_assets) == false) || (options.delete(:embed_images) == false)
  return html_safe(packaged_stylesheets(packages, options)) if disabled || !Jammit.embed_assets
  return html_safe(embedded_image_stylesheets(packages, options))
end

#include_templates(*packages) ⇒ Object

Writes out the URL to the concatenated and compiled JST file – we always have to pre-process it, even in development.

Raises:



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# File 'lib/jammit/helper.rb', line 37

def include_templates(*packages)
  raise DeprecationError, "Jammit 0.5+ no longer supports separate packages for templates.\nYou can include your JST alongside your JS, and use include_javascripts."
end