Class: Locomotive::Steam::Liquid::Tags::Action

Inherits:
Liquid::Block
  • Object
show all
Defined in:
lib/locomotive/steam/liquid/tags/action.rb

Overview

Execute javascript code server side. The API allows you to:

  • access the current liquid context

  • modify the session

  • send emails

  • find / create / update content entries

Usage:

action “My javascript action” %

var lastPost = allEntries('posts', { 'posted_at.lte': getProp('today'), published: true, order_by: 'posted_at desc' })[0];
var views = lastPost.views + 1;

updateEntry('posts', lastPost._id, { views: views });

setProp('views', views);

endaction %

<p>Number of views for the last published post: views }</p>

Constant Summary collapse

Syntax = 
/(#{::Liquid::QuotedString}+)/o

Instance Method Summary collapse

Constructor Details

#initialize(tag_name, markup, options) ⇒ Action

Returns a new instance of Action.



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# File 'lib/locomotive/steam/liquid/tags/action.rb', line 30

def initialize(tag_name, markup, options)
  if markup =~ Syntax
    @description = $1.to_s
  else
    raise ::Liquid::SyntaxError.new("Syntax Error in 'action' - Valid syntax: action \"<description>\"")
  end
  super
end

Instance Method Details

#render(context) ⇒ Object 



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# File 'lib/locomotive/steam/liquid/tags/action.rb', line 39

def render(context)
  Locomotive::Common::Logger.info "[action] executing #{@description}"
  begin
    service(context).run(super, safe_params(context), context)
  rescue Locomotive::Steam::ActionError => e
    e.action = @description
    raise e
  end
  ''
end