通过复选框和Rails中的下拉菜单更新多个记录。

Question

Let's say I have several Posts in an index.

I need to be able to select multiple of them via checkboxes, and then select an action to be done on all selected records (delete, toggle a boolean field in the database to make them all public or private, some other arbitrary method on all of them, etc) using a dropdown with the options and a 'submit' button?

What is the best and simplest way of achieving this?

Answer 1

What you can do is to define a method in your controller against your submit action and then loop individually on each item to update each record

def update_multiple
  @products = Product.find(params[:product_ids])
  @products.each do |product|
    product.update_attributes!(params[:product].reject { |k,v| v.blank? })
  end
  flash[:notice] = "Updated products!"
  redirect_to products_path
end