Module: Tagtical::Taggable::Ownership::InstanceMethods

Defined in:
lib/tagtical/taggable/ownership.rb

Instance Method Summary collapse

Instance Method Details

#cached_owned_tag_list_on(context) ⇒ Object 



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# File 'lib/tagtical/taggable/ownership.rb', line 39

def cached_owned_tag_list_on(context)
  variable_name = find_tag_type!(context).tag_list_ivar(:owned)
  instance_variable_get(variable_name) || instance_variable_set(variable_name, {})
end

#owner_tag_list_on(owner, context) ⇒ Object 



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# File 'lib/tagtical/taggable/ownership.rb', line 44

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

  cache[owner] ||= Tagtical::TagList.new(*owner_tags_on(owner, context).map(&:value))
end

#owner_taggings(owner) ⇒ Object

Find all taggings that belong to the taggable (self), are owned by the owner, have the correct context, and are removed from the list.



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# File 'lib/tagtical/taggable/ownership.rb', line 103

def owner_taggings(owner)
  relation = taggings.where(:tagger_id   => owner.id)
  relation = relation.where(:tagger_type => owner.class.to_s) if Tagtical.config.polymorphic_tagger?
  relation
end

#owner_tags_on(owner, context, options = {}) ⇒ Object 



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# File 'lib/tagtical/taggable/ownership.rb', line 30

def owner_tags_on(owner, context, options={})
  scope = tag_scope(context, options)
  if owner
    scope = scope.where([%{#{Tagtical::Tagging.table_name}.tagger_id = ?}, owner.id])
    scope = scope.where([%{#{Tagtical::Tagging.table_name}.tagger_type = ?}, owner.class.to_s]) if Tagtical.config.polymorphic_tagger?
  end
  scope.all
end

#reload(*args) ⇒ Object 



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# File 'lib/tagtical/taggable/ownership.rb', line 58

def reload(*args)
  tag_types.each do |tag_type|
    ivar = tag_type.tag_list_ivar(:owned)
    remove_instance_variable(ivar) if instance_variable_defined?(ivar)
  end

  super(*args)
end

#save_owned_tags ⇒ Object 



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# File 'lib/tagtical/taggable/ownership.rb', line 67

def save_owned_tags
  # Do the classes from top to bottom. We want the list from "tag" to run before "sub_tag" runs.
  # Otherwise, we will end up removing taggings from "sub_tag" since they aren't on "tag'.
  tag_types.sort_by(&:active_record_sti_level).each do |tag_type|
    cached_owned_tag_list_on(tag_type).each do |owner, tag_list|
      # Find existing tags or create non-existing tags:
      tag_value_lookup = tag_type.scoping { find_or_create_tags(tag_list) }
      tags = tag_value_lookup.keys

      owned_tags = owner_tags_on(owner, tag_type, :scope => [:current, :parents, :children])
      old_tags   = owned_tags - tags
      new_tags   = tags       - owned_tags

      # Find and remove old taggings:
      if old_tags.present? && (old_taggings = owner_taggings(owner).find_all_by_tag_id(old_tags)).present?
        old_taggings.reject! do |tagging|
          if tagging.tag.class > tag_type.klass # parent of current tag type/class, make sure not to remove these taggings.
            update_tagging_with_inherited_tag!(tagging, new_tags, tag_value_lookup)
            true
          end
        end
        Tagtical::Tagging.destroy_all :id => old_taggings.map(&:id) # Destroy old taggings:
      end

      # Create new taggings:
      new_tags.each do |tag|
        taggings.create!(:tagger => owner, :relevance => tag_value_lookup[tag].relevance, :tag_id => tag.id)
      end
    end
  end

  true
end

#set_owner_tag_list_on(owner, context, new_list) ⇒ Object 



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# File 'lib/tagtical/taggable/ownership.rb', line 51

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

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