How can I pass multiple attributes to find_or_create_by in Rails 3?

Question

I want to use find_or_create_by, but this statement does NOT work. It does not \"find\" or \"create\" with the other attributes.

productproperty = ProductPro         


        

Answer 1

See http://api.rubyonrails.org/classes/ActiveRecord/Base.html:

With single query parameter:

productproperty = ProductProperty.find_or_create_by_product_id(product.id) { |u| u.property_id => property_id, u.value => d[descname] } )

or extended with multiple parameters:

productproperty = ProductProperty.find_or_create_by_product_id(:product_id => product.id, :property_id => property_id, :value => d[descname]) { |u| u.property_id => property_id, u.value => d[descname] } )

Would work with:

conditions = { :product_id => product.id, 
               :property_id => property.id,
               :value => d[descname] }

pp = ProductProperty.find(:first, :conditions => conditions) || ProductProperty.create(conditions)