my_plugin_issue_hook.rb

# make sure to require this in your init.rb

class MyPluginIssueHook < Redmine::Hook::ViewListener
  # this just renders the partial
  # the contents of the context ahsh is made available as local variables to the partial
  render_on :view_issues_form_details_bottom, :partial => 'hooks/view_issues_form_details_bottom'

  def controller_account_success_authentication_after(context={ })
    # do something here

    # This is an alternative approach.
    # For view hooks, you can return a string which is inserted into the view
    # (possible created by render_to_string)
    # For controller hooks you can change objects in context (but not replace them)

    # see http://github.com/edavis10/redmine-budget-plugin/blob/master/lib/budget_issue_hook.rb
    # for a real life example
  end
end