Colin Law wrote in post #1155829: > You have a variable called @line_item and are trying to reference the > member @line_item.expensescounter. I assume that @line_item is an > object of class LineItem. Is that correct?
Yes, it is correct. > Assuming the above is correct then what is LineItem.expensescounter? > Is it an association, so in the lineitem class you have lineitem > belongs_to Expensescounter or has_one Expensescounter? If so then at > some point you should have made an expensescounter and assigned it to > a lineitem object and saved them both in the database. Your error > suggests that the lineitem object in @line_item does not have an > associated expensescounter. So the code you need to show is how you > create the expensescounter and then give it to the lineitem. All you > have showed so far is a public method (current_expensescounter) which > finds or creates one, but there is nothing to say that it belongs to > the particular lineitem referenced by @lineitem. I have created relationship between line items, expensescounter and quantity. It is an association between lineitem and expensescounter. I am providing code of model: > Code of cart.rb: class Expensescounter < ActiveRecord::Base attr_accessible :user_id has_many :line_items, dependent: :destroy belongs_to :user validates :user_id, presence: true default_scope order: 'expensescounters.created_at DESC' . . . end > code of line_item.rb: class LineItem < ActiveRecord::Base attr_accessible :quantity_id, :expensescounter_id belongs_to :quantity belongs_to :expensescounter . . . end > code of quantity.rb: class Quantity < ActiveRecord::Base . . has_many :line_items before_destroy :ensure_not_referenced_by_any_line_item . . . end -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscr...@googlegroups.com. To post to this group, send email to rubyonrails-talk@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/c9320b752e0d8e02197c27ea4da1c900%40ruby-forum.com. For more options, visit https://groups.google.com/d/optout.
