Module: Plutonium::Kanban::Grouping

Defined in:
lib/plutonium/kanban/grouping.rb

Overview

The two primitives every kanban rendering path shares: which columns a board has, and how a column's scope narrows a relation.

There is deliberately no call that groups a whole relation in one go. One existed and had no callers: KanbanActions renders columns independently — each is its own lazy turbo-frame with its own per_column cap and count — so a whole-board grouper only ever duplicated that logic while quietly counting and limiting every column on every request.

Class Method Summary collapse

Class Method Details

.apply_scope(relation, scope) ⇒ Object

Applies a column scope to a relation. Symbol → relation.public_send(sym) (named scope) Proc → relation.instance_exec(&scope) (inline lambda, e.g. -> { where(status: "todo") }) nil → relation unchanged



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# File 'lib/plutonium/kanban/grouping.rb', line 28

def apply_scope(relation, scope)
  case scope
  when Symbol then relation.public_send(scope)
  when Proc then relation.instance_exec(&scope)
  when nil then relation
  else raise ArgumentError, "Unsupported column scope: #{scope.inspect} (expected Symbol, Proc, or nil)"
  end
end

.resolve_columns(board, context) ⇒ Object

Resolves the column list from a board. For dynamic boards, evaluates the columns_block against the context (which exposes current_user, params, etc. via delegation to view_context).



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# File 'lib/plutonium/kanban/grouping.rb', line 19

def resolve_columns(board, context)
  return board.columns unless board.dynamic?
  Array(context.instance_exec(&board.columns_block)).flatten
end