Form API hook_form_alter not working
90424
Why is hook_form_alter() so messy?
47491
drupal_add_js not work in form validation failed
108882
What is the equivalent of hook_menu_alter() to change a menu item type?
80688
How do I add custom properties to a form
19518
Custom form submit handler is called, but node is not saved
83403
$_FILES undefined PHP upload form. Can't figure out
20459
How do I pass JavaScript variables to PHP?
40904
Greasemonkey to change value of Radio buttons in a form?
98299
Drupal 7 custom form date_popup element
157331
How to use hook_node_presave to change field's value
103792
How do I add reCaptcha to a custom form?
125428
AngularJS custom form validation using $http
16762
Disabled form fields not submitting data
48704
form_state->setRedirect(to_a_new_node_page) from the submitForm function, route "does not exist" issue
43508
Why are $_POST variables getting escaped in PHP?
117156
Customize newform save button - Save and redirect to another form
28585
submitting a GET form with query string params and hidden params disappear