Pug (RIP Jade)表单复选框——无论选择多少，只返回一个值

I have a form written in Pug. I am getting all the correct parameters out of the form's POST, except my checkbox array is a string containing one value - the latest day selected. Each checkbox has a name equaling an array, so the form should be returning all selected checkboxes. However, that is not happening.I have a form written in Pug. I am getting all