Hello.
I wrote some code that I use to simplify including images. This
function needs to know about engines as it is used within engine
views, and can access images within the engine public repository.
I have made a minor modification to the Engines code.
# Returns the Engine object for the current engine, i.e. the engine
# in which the currently executing code lies.
def current(c = caller)
current_file = c[0]
active.find do |engine|
File.expand_path(current_file).index(File.expand_path
(engine.root)) == 0
end
end
This allows me to get the current engine from functions which have
been called
Here is the code that uses it, for completeness.
module ApplicationHelper
DefaultIconCategory = "default"
def icon_path(category, icon, root = '')
File.join('', root, 'images', category.to_s, icon.to_s + '.png')
end
def icon_src(category, icon, root = '')
paths = [icon_path(category, icon, root), icon_path
(DefaultIconCategory, icon, root), icon_path(category, icon),
icon_path(DefaultIconCategory, icon)]
logger.info paths
return paths.find { |path| File.exist? File.join(RAILS_ROOT,
'public', path) }
end
def icon_tag(icon, options={})
category = options.delete(:category) || controller.controller_name
root = options.delete('root') || ''
if defined? Engines
engine ||= options.delete(:engine) || Engines.current(caller)
if defined? Engines
root = File.join(Engines.config(:public_dir), engine.name)
unless engine.nil?
end
css_class = options.delete(:class) || 'icon'
return tag('img', {'class' => css_class, 'src' => icon_src
(category, icon, root)})
end
end
I hope you can merge this into the main code as this is very useful,
and i am sure it is useful to others too.
Kind regards, Samuel
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