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7,577 PointsWhy do we need hidden_field in the form?
Why do we need the following code?
if(isset($_POST['wptreehouse_form_submitted'])){
$hidden_field = esc_html($_POST['wptreehouse_form_submitted']);
if($hidden_field == 'Y'){
$wptreehouse_username = esc_html($_POST['wptreehouse_username']);
}
Why cant we just do:
if(isset($_POST['wptreehouse_username'])){
$wptreehouse_username = esc_html($_POST['wptreehouse_username']);
}
1 Answer
Zac Gordon
Treehouse Guest TeacherWhen we process forms from within the functions.php file we tie the related functions the WordPress init hook. This way as soon as WordPress starts spitting out our theme, it's ready to handle the form submission.
Giving each form we create a unique hidden field and related value let's us setup "listeners" of sorts to borrow from the JS world that will be called when the related form is submitted. It becomes more clear as you add more functions that tie to form submissions.