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module TheComments
module Commentable
extend ActiveSupport::Concern
included do
has_many :comments, as: :commentable
# *define_denormalize_flags* - should be placed before title or url builder filters
before_validation :define_denormalize_flags
after_save :denormalize_for_comments, if: -> { !id_changed? }
end
# Default Denormalization methods
# Overwrite it with your Application
def commentable_title
# My first blog post
try(:title) || TheComments.config.default_title
end
def commentable_url
# /posts/1
['', self.class.to_s.tableize, self.to_param].join('/')
end
def commentable_state
# 'draft'
try(:state)
end
# Helper methods
def comments_sum
published_comments_count + draft_comments_count
end
def recalculate_comments_counters!
update_attributes!({
draft_comments_count: comments.with_state(:draft).count,
published_comments_count: comments.with_state(:published).count,
deleted_comments_count: comments.with_state(:deleted).count
})
end
private
def define_denormalize_flags
@trackable_commentable_title = commentable_title
@trackable_commentable_state = commentable_state
@trackable_commentable_url = commentable_url
end
def denormalization_fields_changed?
a = @trackable_commentable_title != commentable_title
b = @trackable_commentable_state != commentable_state
c = @trackable_commentable_url != commentable_url
a || b || c
end
def denormalize_for_comments
if denormalization_fields_changed?
comments.update_all({
commentable_title: commentable_title,
commentable_state: commentable_state,
commentable_url: commentable_url
})
end
end
end
end
Version data entries
10 entries across 10 versions & 3 rubygems