ruby on rails add values in arr code example

Example 1: how to add to an array ruby

array.push('new element')
# OR
array << 'new element'

Example 2: how to add to array ruby

a = [ "a", "b", "c" ]
a.push("d", "e", "f")
        #=> ["a", "b", "c", "d", "e", "f"]
[1, 2, 3].push(4).push(5)
        #=> [1, 2, 3, 4, 5]