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paulcsmith/user_query_preloading.cr Secret

Last active July 30, 2018 19:57
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user_query_preloading.cr
# Lucky will let you know at runtime that `comment.author` was not preloaded
CommentQuery.new.each do |comment|
p comment.author.name
end
# This will work since we preloaded the author
CommentQuery.new.preload_author.each do |comment|
p comment.author.name
end
# Use author! to skip preloading and skip raising the runtime error
CommentQuery.new.each do |comment|
p comment.author!.name
end
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