Remove Object from Active Record Array

Question

In Rails, I have the following Active Record Collection:

@products = Product.all

I need to loop through this collection and remove some objects from it without removing them from the database. Therefore, using

@products.each do |product|
    if CONDITION
        product.delete
    end
end

Won't work, as this will also delete the product from the database. Is there a way to remove specific products from this collection without also deleting them from the database?

Answer 1

First question, if you don't want the all records, then why even return them from the DB? Why not use a where clause to filter results:

@products = Product.where(<CONDITIONS>)

Second, if you insist on returning all results then filtering, use a .reject block:

@products = Product.all.reject { |p| <CONDITION> }

Answer 2

Since Active Record Collections are arrays, you can use reject!:

@products.reject! do |product|
  // your_code
end

If your_code evaluates to true, then product is removed from the collection.