mysql - Rails find_by with OR -

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i have named scope set in rails application used locate record either id (directly index view) or uuid (from email - users can't enter in id , view record)

scope :by_uuid, lambda { |id| where('id = ? or uuid = ?', id, id) }

this used in show action, id comes url, like

services/114  services/74c083c0-8c29-012f-1c87-005056b42f8a

this works great, until uuid such 74c083c0-8c29-012f-1c87-005056b42f8a this, rails unfortunately converts int value , services/74 record correct uuid

adding .first scope not because order different each record, not work.

is there way prevent rails converting id , taking string literally? obviously, there not record id matches that, if goes willy-nilly integer values of string passed it, back.

using dynamic finders, such 

service.find_by_uuid

or

service.find_by_id

work intended, need able retrieve record using uuid or id in same method (show).

is there way like

service.find_by_id_or_uuid

we fixed issue following change scope:

scope :by_uuid, lambda { |id| where('binary id = ? or uuid = ?', id, id) }

this ensures id string taken binary value instead of being converted int. however, only work mysql based apps


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