CODEWITHSUNDEEP
ruby-on-railsactiverecordconditional-statements
Greg
Greg

Reputation: 2609

Conditional Active Record Callbacks

The following geocodes (gets the coordinates of the address) automagically when I create or update. This is in my Location model

def full_address
    full_address = "#{address},#{city},#{state}"
end

geocoded_by :full_address
after_validation :geocode, :if => :address_changed?

But I don't want the geocoding done if I set coords_locked to true.

I can't figure out how to do this. I tried

geocoded_by :full_address
  after_validation :geocode, :if => { :coords_locked == false || :address_changed?  }

What is the correct syntax or am I going about this all wrong. Thank you

PS. Just realized I probably don't need the full_address =.

Upvotes: 0

Views: 385

Answers (1)

Ben Hawker
Ben Hawker

Reputation: 949

I think you want the following from the Rails Guides - http://guides.rubyonrails.org/active_record_validations.html#using-a-proc-with-if-and-unless

5.3 Using a Proc with :if and :unless

Finally, it's possible to associate :if and :unless with a Proc object which will be called. Using a Proc object gives you the ability to write an inline condition instead of a separate method. This option is best suited for one-liners.

So perhaps something like this:

  after_validation :geocode,
    if: Proc.new { |location| location.coords_locked? && location.address_changed? }

Then you could maybe setup some scopes to define coords_locked? and address_changed?

Upvotes: 1

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