82 lines
2.0 KiB
Ruby
82 lines
2.0 KiB
Ruby
module OrbitTag
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module Taggable
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def self.included(base)
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base.extend ClassMethods
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base.class_eval 'taggable'
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end
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module ClassMethods
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def taggable
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class_eval do
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field :tags_to_destroy, type: Array, default: []
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field :tagged_ids, type: Array, default: []
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has_many :taggings, as: :taggable, autosave: true, dependent: :destroy
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accepts_nested_attributes_for :taggings, allow_destroy: true
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after_save :remove_taggings, unless: Proc.new{self.tags_to_destroy.blank?}
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end
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send :include, InstanceMethods
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end
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end
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module InstanceMethods
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def remove_id(id)
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self.class.without_callback(:save, :after, :remove_taggings) do
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self.update_attribute(:tagged_ids, self.tagged_ids - [id.to_s])
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end
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end
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def sorted_tags
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if tags.blank?
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[]
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else
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tag_array = tags.inject([]){ |result, value|
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result << [value.name, value]
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}
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tag_array.sort.map{|x| x[1] }
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end
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end
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def tags
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self.taggings.blank? ? [] : self.taggings.map{|t| t.tag}.compact
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end
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def tags=(tag_ids)
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tag_ids = [tag_ids].flatten
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tag_ids.delete_if{|e| e.match(/^[0-1]$|^$/)}
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ids = self.taggings.blank? ? [] : self.taggings.map{|t| t.tag.id}
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tag_ids.each do |tag_id|
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unless ids.include? tag_id
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self.taggings.build(tag_id: tag_id)
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end
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end
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self.tags_to_destroy = self.taggings.where(:tag_id.in => (ids - tag_ids)).map{|t| t.id}
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self.tagged_ids = tag_ids
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end
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def tag_ids
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self.tags.map{|t| t.id}
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end
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def tag_ids=(ids)
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self.tags = ids
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end
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private
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def remove_taggings
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self.taggings.where(:_id.in => self.tags_to_destroy).destroy
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self.class.without_callback(:save, :after, :remove_taggings) do
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self.update_attribute(:tags_to_destroy, [])
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end
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end
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end
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end
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end
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