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Ruby Build a Todo List Application with Rails 4 Build a Todo List Application with Rails 4 Editing Todo Lists

use of let!() function

In the video editing Todo Lists the code was like let!(:todo_list) {TodoList.create(title: "Groceries",description: "Grocery list.")}, y not use todo_list = TodoList.create(title: "Groceries",description: "Grocery list."),this is also considered to be declaraded globally. plss brief the purpose of let!(). Thanks in advance.

Please use some plain english instead of writing "y" and "plss" the next time you ask for help on the internet...

2 Answers

Thanku very much. you helped me a lot.

can u please suggest any documentations or references (books)for clear understanding of rails.