Ruby on Rails

Create two associations with conditions on the parent table with conditions that point to each "type" of address.

For instance:

has_many :addresses

has_one :primary_address, 

->() do

  where( :type => :primary )

end,

:class_name => Address

This will make primary address accessible through addresses but also make it its own association ( so you can just pass that association to the form ).

Be aware that changes to one association will not be reflected in the other. So if you change "primary_address", before you reload, the object in addresses which corresponds to your primary address will not have the changes you made to primary address. After you save/reload, they will.

On Thu, May 21, 2015 at 6:00 PM, Walter Lee Davis <waltd@wdstudio.com> wrote:

Do these addresses have any difference besides being primary or secondary? Are there extra fields in one that are not in the other? Or is primary maybe a boolean on the address object?

Walter

On May 21, 2015, at 3:36 PM, Elizabeth McGurty <emcgurty2@gmail.com> wrote:

> I have a parent table.  And associated with that parent table is two possible addresses, a primary one and/or an alternative: (has_many and accepts_nested_attributes_for).
>
> Rather than creating a second addresses table, I have used a flag, address_type to distinguish primary from alternative, which will apparently only be useful if I can create a condition on fields_for
>
> But now as I explore and research more, seems that I cannot create a condition on fields_for addresses, type => 'alternative' or 'primary'.
>
> I want to utilize Rails associations... Should I just create tables: primary_addresses and alternative_addresses?
>
> Thanks,
>
> Liz
>
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