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Conditionally turn off :dependent => :destory on FriendlyId::Slugs #268

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erikogan
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Hi,

We're using acts_as_paranoid on some of our sluggable models. This means they’re not actually deleted when calling destroy. If we delete the slugs, we’re losing the history (and worse, setting up a condition where a unique contstraint may end up being violated)

There is a chicken & egg problem here with FriendlyId::Configuration objects and use. We’d love to get your feedback on the proposed solution.

Thanks!

module Configuration
def dependent_destroy
return @dependent_destroy if defined?(@dependent_destroy)
@dependent_destroy = options.delete(:dependent_destroy) != false ? :destroy : nil
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how about:

@dependent_destroy = (:destroy if options.delete(:dependent_destroy))

seeing as you're saying != false, wouldn't it be fine to accept any truthy value?

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Then the entire method could be:

def dependent_destroy
  @dependent_destroy ||= (:destroy if options.delete(:dependent_destroy))
end

Unless I'm missing something about why you're using defined?(@dependent_destroy) (for example, a false value would trigger the ||=)

Thanks

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The != false is to cover the case where the :dependent_destroy is nill (most likely because it has not been set, as this is the default case) We wanted to maintain the same functionality in the default case.

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Ahh, that makes sense.

@norman
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norman commented Apr 17, 2012

Yeah, I think this is fine. I worry a little about letting FriendlyId 4 bloat up with a bunch of configuration options and switches, like FriendlyId 3 had. But I don't really see any better way to handle this situation, and it seems like a rather reasonable use case. At least the "bloat" is now isolated to an optional add on.

Leaflet
end

test "run!" do
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How about a slightly more descriptive test name here, to better match the rest of the test suite?

@norman
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norman commented Apr 28, 2012

Another comment on this: isn't possible to just redefine the slugs relationship in the model? Then there would be no need for another config option.

@norman
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norman commented Jun 28, 2012

Closing this as stale. If you still think it should be merged, please see my comments and let me know.

@norman norman closed this Jun 28, 2012
@twe4ked
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twe4ked commented Aug 27, 2012

@jasoncodes and I simply overrode the dependent destroy method.

# prevent slugs being destroyed
def has_many_dependent_for_slugs; end

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4 participants