{{notice: This function's solution will only work within the context of the Rails framework. }}
We can split an array into separate chunks in Rails using the
Array#in_groups_of method.
{{code:php $animals = array('ant', 'bat', 'cat', 'dog', 'elk'); $result = array_chunk($animals, 3); var_export($result); // => array(0 => array(0 => 'ant', 1 => 'bat', 2 => 'cat'), // 1 => array(0 => 'dog', 1 => 'elk')) }}
The default Rails implementation of in_groups_of will fill any missing
elements with nil.
{{code:rails animals = ["ant", "bat", "cat", "dog", "elk"] p animals.in_groups_of(3) # => [["ant", "bat", "cat"], ["dog", "elk", nil]] }}
To get the same results as our PHP version, we need to pass false
as the second argument to in_groups_of.
{{code:rails animals = ["ant", "bat", "cat", "dog", "elk"] p animals.in_groups_of(3, false) # => [["ant", "bat", "cat"], ["dog", "elk"]] }}