+ scope :with_panel, -> do
+ includes(:panel)
+ end
+
+ scope :find_index, -> do
+ with_panel.where(Panel.arel_table[:publish].gt 0).references(:panel)
+ end
+
+ scope :find_private, -> (operators) do
+ with_panel.where(Panel.arel_table[:author_id].eq operators.author.id).references(:panel)
+ end
+
+ scope :find_by_panel, -> (panel_id) do
+ find_index.where(panel_id: panel_id).references(:panel)
+ end
+
+ scope :find_by_author, -> (author_id) do
+ find_index.where(Panel.arel_table[:author_id].eq author_id).references(:panel)
+ end
+