Form for one model with many objects

UPD. I need to display multiple records of a single model in a form.Then after updating some values I need to save all the records data at once..that is my form view should work like a spread she开发者_JAVA百科et. The requirement is, from one table I need to get data and populate all rows in a form. After that I have to edit some columns then and I should save all records of this model to database at a time.

Here is Railscast which presents how to edit multiple records in one form.