Generate correct number of codes in BatchBuilder #2578
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Previously this was building codes on the association and then relying on the autosave behaviour to save the new records when save was called on the Promotion. It's simpler to just explicitly create them.
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Previously, due to a bug in the inner loop, BatchBuilder could generate more codes than were requested. This removes the inner loop in favour of a single, smarter outer loop. Instead of always creating exactly batch_size new codes, we now create up to batch_size new codes. On each loop we try to generate batch_size new potential codes and only save the ones which are unique. This should result in fewer selects in scenarios where there is contention over codes. Though this is entire system is not well suited for there to be many conflicts.
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This was referenced Feb 15, 2018
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Previously, due to a bug in the inner loop,
BatchBuildercould generate more codes than were requested.This removes the inner loop in favour of a single, smarter outer loop. Instead of always creating exactly
batch_sizenew codes, we now create up tobatch_sizenew codes. On each loop we try to generatebatch_sizenew potential codes and only save the ones which are unique.This should result in fewer selects in scenarios where there is contention over codes. Though this is entire system is not well suited for there to be many conflicts.
Fixes #2577