On Monday, March 5, 2018 at 10:56:33 AM UTC-8, James wrote:
>
> Hi,
>
> I'm looking for an example as to how to use the validate_associated
> plugin. Here's an example of what I'm trying to do.
>
> class Address < Sequel::Model
> plugin :validation_helpers
>
> many_to_one :sales_order, key: :link_no, primary_key: :order_no
>
> def validate
> super
> validates_presence :name
> end
> end
>
> class SalesOrder < Sequel::Model
> plugin :validation_helpers
> plugin :validate_associated
>
> one_to_one :shipping_address, class: Address, conditions: {addr_type:
> 'S'}, key: :link_no, primary_key: :order_no
>
> private
>
> def validate
> super
> validates_presence [..., ..., ...]
> end
> end
>
> so = SalesOrder[1234]
> so.shipping_address.name = nil
> so.valid? # true (expected false because shipping_address.name is not
> present)
>
The plugin itself does not change behavior, it merely adds the
Model#validate_associated_object method that can be called to validate the
associated object. I can see where the current documentation is lacking in
how to use it directly, it was mostly decided for use by other plugins such
as nested_attributes and delay_add_association. I'll update the
documentation shortly to provide a clearer example of usage.
Thanks,
Jeremy
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