Redmine

I've been thinking about this a lot lately and it's one thing that I think Wordpress did good on. A practical example would be allow a plugin to hook into the issue edit page to render some extra HTML after the main form. I'd like to just be able to hook into it like:

  Redmine.hooks[:post_issue_edit] << MyPluginController.action

Jean-Philippe Lang, I have a plugin coming up that we could use as an experiment for this API.

I wanted to post an update to this feature. I have successfully added hooks into Redmine and the Redmine Plugin API. It still needs some cleaning up before release but it's working great for a plugin I'm writting. Similar to Wordpress plugins, you can have a hook that inserts HTML or does an action. The plugin registers for a hook buy passing in a Ruby Proc to the add_hook method:

# Plugin's init.rb
add_hook(:issue_show, Proc.new { |context| MyClass.my_method(context) })

To add a hook point, the core just needs a single line. Using the example above:

# app/views/issues/show.rhtml
<%= Redmine::Plugin::Hook.call_hook(:issue_show, {:project => @project, :issue => @issue}) %>

I'd like to have these hooks are critical points and we can also wrap some methods with around filters to do the pre/post processing.

Eric Davis wrote:

The plugin registers for a hook buy passing in a Ruby Proc to the add_hook method:

Very minor suggestion, but could you rename it to add_to_hook, which is what really happens, please ? Emacs did it wrong decades ago and we are now stuck with this improper name 'add_hook' :)

Other than that, it might be a useful facility, thanks.