Forage.preload_in_result
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preload_in_result(arg, repo, preloads)
Preload the associations in a database result.
It accepts the following types of result:
{:ok, struct}wherestructis an ecto schema{:error, changeset}wherechangesetis a changeset
This function is optimized to process the results of operations such as
c:Repo.insert/1 and c:Repo.update/1.