[Dbix-class] Defaulting cascade actions to false

[Ovid]

Hi all,

I need to be able to globally set these attributes on on those resultsource methods which accept them:

  {
    cascade_delete => 0,
    cascade_update => 0,
  }

 
It seems like this is being handled on a method by method basis (see &DBIx::Class::Relationship::HasOne::_has_one for an example), but the code is dense enough (or I am) that I'm not seeing if there is some simple way of overriding this behavior.  Right now we're hardcoding this for every single has_one, has_many, belongs_to, etc., and this is leading to unecessary code bloat (and in one case, a bug where a developer forgot to explicitly add this).  I know how to override this in our base class, but if there's is an "official" way of handling this, it would be nice to see.

Cheers,
Ovid
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