search for: options_from_etc_etc

i am kind of desparated i try with options_from_collection_for_select to get option values, but it says You have a nil object when you didn''t expect it! You might have expected an instance of Array. The error occured while evaluating nil.inject but @customers is not empty -> def get_customer @customers=Customer.find_all end i have tested it and also the attributes "id"