Redmine

I want to override the model method with my plugin. I tried to create a new model Patch with method that should override like this:

require_dependency 'issue'

module IssuePatch
    def self.included(base) # :nodoc:
        base.send(:extend, ClassMethods)
        base.send(:include, InstanceMethods)
        base.class_eval do
            alias_method :visible_condition, :visible_condition_with_patch
        end
    end

    module ClassMethods

    end

    module InstanceMethods
        def visible_condition_with_patch(user, options={})

            <Do Something>
        end
      end
end

Rails.configuration.to_prepare do
    unless Issue.included_modules.include? IssuePatch
        # Issue.extend(InstanceMethods)
        Issue.send(:include, IssuePatch)
    end
end