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can i add database trigger on plugin?

Added by rangga rahadian almost 8 years ago

im new to redmine plugin development, need much help

can i add databse trigger on db migration or on else? as example, when the issue status field on table issue changes, it triggered to change other field values on another table.

if it can, give me litte example how to write trigger on the plugin

thanks, really appreciate for your help


Replies (2)

RE: can i add database trigger on plugin? - Added by Martin Denizet (redmine.org team member) almost 8 years ago

Look into the after_save callback

You have to create a plugin to inject the after_save behavior.
A very simplistic use case for a model called TargetModel would be (Didn't test, dummy code):

module MyPlugin
  module TargetModelPatch
    def self.included(base) # :nodoc:
      base.send(:include, InstanceMethods)

      base.class_eval do
        unloadable

        after_save :my_custom_callback
      end
    end

    module InstanceMethods
      def my_custom_callback
        # Insert code to be called after TargetModel is saved (created or updated)
        # use 'self' to get the current TargetModel instance
    end
  end
end

TargetModel.send(:include, MyPlugin::TargetModelPatch)

Cheers,

-Martin

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