Class: Smithy::Liquid::Tags::Asset::AssetImageTag

Inherits:
Liquid::Tag
  • Object
show all
Defined in:
lib/smithy/liquid/tags/asset.rb

Constant Summary collapse

Syntax = 
/(#{::Liquid::Expression}+)?/

Instance Method Summary collapse

Constructor Details

#initialize(tag_name, markup, tokens) ⇒ AssetImageTag

Returns a new instance of AssetImageTag.



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# File 'lib/smithy/liquid/tags/asset.rb', line 7

def initialize(tag_name, markup, tokens)
  if markup =~ Syntax
    @variable = $1.gsub('\'', '').strip
  else
    raise ::Liquid::SyntaxError.new("Syntax Error in '#{@tag_name}' - Valid syntax: asset_image_tag <asset_id|path>")
  end
  super
end

Instance Method Details

#render(context) ⇒ Object 



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# File 'lib/smithy/liquid/tags/asset.rb', line 16

def render(context)
  @asset_id = context[@variable]
  if @asset = ::Smithy::Asset.find_by_id(@asset_id)
    @url = @asset.url
    @alt = @asset.name
  else
    @url = @asset_id
    @alt = ''
  end
  controller  = context.registers[:controller]
  controller.view_context.send(:image_tag, @url, :alt => @alt)
end