PHP Wordpress Custom Form Part 3

In Previous Tutorial We Have Created Template For Custom Form. Now add functionality for Validate data and Add data in database.

First we add functionality for validate data inserted in form .

• To do this create a new js file custom.js with functionality for validation.
• Put below code in it.

function form_validation(){
     if( jQuery("#form_title").val() == "" ){
           alert("Enter Form Title");
           jQuery("#form_title").focus();
           return false;
     }
    
     if( jQuery("#form_description").val() == "" ){
           alert("Enter Form Description");
           jQuery("#form_description").focus();
           return false;
     }
    
     if( jQuery("#form_image").val() == "" ){
           alert("Select Form Image");
           jQuery("#form_image").focus();
           return false;
     }
    
     if( jQuery("#form_type").val() == "" ){
           alert("Enter Form Type");
          jQuery("#form_type").focus();
           return false;
     }
    
     if( jQuery("#form_author_name").val() == "" ){
           alert("Enter Form Author");
           jQuery("#form_author_name").focus();
           return false;
     }
}

After creating this file put it in js folder in your theme

You need to include this file to call this function.Put below code in your theme's function.php file

wp_enqueue_script( 'custom-js-script', get_template_directory_uri() . '/js/custom.js', array(), '1.0.0', true );

Add Data to Database

For this add below funtion to function.php file

add_action("init", "form_submit_fn");//Add Function

function form_submit_fn(){
     if ( isset( $_POST['form_submit'] ) || wp_verify_nonce( $_POST['form_submit'], 'form_submit_flag' ) ) {
           $form_title = $_POST["form_title"];
           $form_description = $_POST["form_description"];
           $form_image = $_POST["form_image"];
           $form_type = intval( $_POST["form_type"] );
           $form_author_name = $_POST["form_author_name"];
          
          
           // Create post object
           $my_post = array(
             'post_title'    => $form_title,
             'post_content'  => $form_description,
             'post_status'   => 'publish',
             'post_type'     => 'form'
           );
            
           // Insert the post into the database
           $post_id = wp_insert_post( $my_post );
           wp_set_object_terms( $post_id, $form_type, 'genre' );
          
           require_once(ABSPATH . "wp-admin" . '/includes/image.php');
           require_once(ABSPATH . "wp-admin" . '/includes/file.php');
           require_once(ABSPATH . "wp-admin" . '/includes/media.php');
               
           $attach_id = media_handle_upload( "form_image", $post_id );
           if ($attach_id > 0){
                set_post_thumbnail($post_id, $attach_id);
           }
           update_post_meta( $post_id, "form_author", $form_author_name );
     }
}