I am curious as to the best practices for the following use case:
You have two models, Parent and Kid.
# parent model
has 0..n, :kids
# kid model
belongs_to :parent
I would like to be able to do the following:
@parent.first
@parent.kids.update_or_create(kid_hash)
# in the Kid model
def self.update_or_create(kid_hash)
if kid = first(kid_hash)
kid.update(kid_hash) #pseudo-code
else
kid = create(kid_hash)
end
end
The problem with the above is that the method has no idea that it is
"scoped" by the @parent and thus does not know the "parent_id", nor
could I find a way to determine this.
I have successfully tried two alternate ways of doing this:
1 - with a method in the parent model "update_or_create_kid" and do
the same operations from the Parent model. This logic seems like it
should belong in the Kid model though.
2 - by passing the @parent.id inside of the kid_hash.
@parent.first
kid_hash[:parent_id] = @parent.id
Kid.update_or_create(kid_hash)
Am I missing something to get this working? Is there an alternate way
to accomplish this? Or is one of the alternate ways the best way?
Thanks,
- Mark
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