Hi Samuel,
While I like the ideas behind this, having view helpers which
automatically detect which plugin to load content from could be
problematic. For instance, say you want to override your plugin icon
with one from your application? With your current icon_tag method,
this would not be possible, as I understand it.
In this case, I think a little bit more work by the plugin developer
(to specify their plugin name in view helper calls) pays dividends by
making it simpler to track down where the asset originates from.
- James
On 1/12/07, Samuel Williams <[EMAIL PROTECTED]> wrote:
> 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
> _______________________________________________
> engine-developers mailing list
> [email protected]
> http://lists.rails-engines.org/listinfo.cgi/engine-developers-rails-engines.org
>
--
* J *
~
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