Constant Map Filtering
I have two models Product and Product Properties. So, I store the properties for products in the Product Properties model which is associated with another model Properties
How can I implement a scope that finds a product with the properties (A or B or C) AND (X or Y or Z)
Filters I currently have are like so --
`scope :product_type_filter, lambda {|property_id|
return nil if property_id.blank?
joins(:product_properties).where('product_properties.property_id IN (?)', property_id).distinct
}
scope :metal_filter, lambda {|property_id|
return nil if property_id.blank?
joins(:product_properties).where('product_properties.property_id IN (?)', property_id).distinct
}`
And product the following SQL -SELECT DISTINCT "products".* FROM "products" INNER JOIN "product_properties" ON "product_properties"."product_id" = "products"."id" AND "product_properties"."deleted_at" IS NULL WHERE "products"."deleted_at" IS NULL AND (product_properties.property_id IN ('504')) AND (product_properties.property_id IN ('520'))
But it doesn't really work since it's looking for a Product Property which has both values 504 and 520, which will never exist.
Would appreciate some help!
So this is the join that I used --
def self.find_with_properties property_ids, group_name
joins(:product_properties).joins('JOIN product_properties '+group_name+' ON '+group_name+'.product_id = products.id AND '+group_name+'.property_id IN ('+property_ids.to_s.tr('[', '').tr(']', '').tr('"', '') +')')
end