#512 ✓resolved

Strategic eager loading and asking children.first

Reported by Ewout | August 4th, 2008 @ 07:45 AM

On lines 112-114 in relationship.rb, the collections with loaded child elements are prepared for all parents the strategic eager loading applies to.

These collections are initialized lazily, with a block.

Consequence: the collection does not mark itself as loaded and when asking parent.children.first, a query will be executed instead of just looking the first child up in the loaded array of children.

I suppose this is not the desired behaviour. Fix is to initialize the collection immediately and mark it as loaded.

So instead of:

parents_children = Collection.new(query) do |collection|

children.each { |child| collection.send(:add, child) }


parents_children = Collection.new(query)

children.each { |child| parents_children.send(:add, child) }


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