Module: ActsAsTaggableOn::Taggable::Ownership::InstanceMethods

Defined in:
lib/acts_as_taggable_on/acts_as_taggable_on/ownership.rb

Instance Method Summary collapse

Instance Method Details

#cached_owned_tag_list_on(context) ⇒ Object 



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# File 'lib/acts_as_taggable_on/acts_as_taggable_on/ownership.rb', line 38

def cached_owned_tag_list_on(context)
  variable_name = "@owned_#{context}_list"
  cache = instance_variable_get(variable_name) || instance_variable_set(variable_name, {})
end

#owner_tag_list_on(owner, context) ⇒ Object 



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# File 'lib/acts_as_taggable_on/acts_as_taggable_on/ownership.rb', line 43

def owner_tag_list_on(owner, context)
  add_custom_context(context)

  cache = cached_owned_tag_list_on(context)
  cache.delete_if { |key, value| key.id == owner.id && key.class == owner.class }
  
  cache[owner] ||= TagList.new(*owner_tags_on(owner, context).map(&:name))
end

#owner_tags_on(owner, context) ⇒ Object 



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# File 'lib/acts_as_taggable_on/acts_as_taggable_on/ownership.rb', line 32

def owner_tags_on(owner, context)
  base_tags.where([%(#{Tagging.table_name}.context = ? AND
                     #{Tagging.table_name}.tagger_id = ? AND
                     #{Tagging.table_name}.tagger_type = ?), context.to_s, owner.id, owner.class.to_s]).all
end

#reload ⇒ Object 



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# File 'lib/acts_as_taggable_on/acts_as_taggable_on/ownership.rb', line 61

def reload
  self.class.tag_types.each do |context|
    instance_variable_set("@owned_#{context}_list", nil)
  end

  super
end

#save_owned_tags ⇒ Object 



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# File 'lib/acts_as_taggable_on/acts_as_taggable_on/ownership.rb', line 69

def save_owned_tags
  tagging_contexts.each do |context|
    cached_owned_tag_list_on(context).each do |owner, tag_list|
      # Find existing tags or create non-existing tags:
      tag_list = Tag.find_or_create_all_with_like_by_name(tag_list.uniq)            

      owned_tags = owner_tags_on(owner, context)              
      old_tags   = owned_tags - tag_list
      new_tags   = tag_list   - owned_tags
    
      # Find all taggings that belong to the taggable (self), are owned by the owner, 
      # have the correct context, and are removed from the list.
      old_taggings = Tagging.where(:taggable_id => id, :taggable_type => self.class.base_class.to_s,
                                   :tagger_type => owner.class.to_s, :tagger_id => owner.id,
                                   :tag_id => old_tags, :context => context).all
    
      if old_taggings.present?
        # Destroy old taggings:
        Tagging.destroy_all(:id => old_taggings.map(&:id))
      end

      # Create new taggings:
      new_tags.each do |tag|
        taggings.create!(:tag_id => tag.id, :context => context.to_s, :tagger => owner, :taggable => self)
      end
    end
  end
  
  true
end

#set_owner_tag_list_on(owner, context, new_list) ⇒ Object 



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# File 'lib/acts_as_taggable_on/acts_as_taggable_on/ownership.rb', line 52

def set_owner_tag_list_on(owner, context, new_list)
  add_custom_context(context)
  
  cache = cached_owned_tag_list_on(context)
  cache.delete_if { |key, value| key.id == owner.id && key.class == owner.class }

  cache[owner] = TagList.from(new_list)
end