fix: add required attribute for various input field in dokan_post_inp…

…ut_box function (#667)

includes/functions.php

@@ -698,7 +698,7 @@ function dokan_post_input_box( $post_id, $meta_key, $attr = array(), $type = 'te
         case 'textarea':
             $rows = isset( $attr['rows'] ) ? absint( $attr['rows'] ) : 4;
             ?>
-            <textarea name="<?php echo esc_attr( $name ); ?>" id="<?php echo esc_attr( $name ); ?>" rows="<?php echo esc_attr( $rows ); ?>" class="<?php echo esc_attr( $class ); ?>" placeholder="<?php echo esc_attr( $placeholder ); ?>"><?php echo esc_textarea( $value ); ?></textarea>
+            <textarea <?php echo esc_attr( $required ); ?> name="<?php echo esc_attr( $name ); ?>" id="<?php echo esc_attr( $name ); ?>" rows="<?php echo esc_attr( $rows ); ?>" class="<?php echo esc_attr( $class ); ?>" placeholder="<?php echo esc_attr( $placeholder ); ?>"><?php echo esc_textarea( $value ); ?></textarea>
             <?php
             break;
 
@@ -709,7 +709,7 @@ function dokan_post_input_box( $post_id, $meta_key, $attr = array(), $type = 'te
 
             <label class="<?php echo esc_attr( $class ); ?>" for="<?php echo esc_attr( $name ); ?>">
                 <input type="hidden" name="<?php echo esc_attr( $name ); ?>" value="no">
-                <input name="<?php echo esc_attr( $name ); ?>" id="<?php echo esc_attr( $name ); ?>" value="yes" type="checkbox"<?php checked( $value, 'yes' ); ?>>
+                <input <?php echo esc_attr( $required ); ?> name="<?php echo esc_attr( $name ); ?>" id="<?php echo esc_attr( $name ); ?>" value="yes" type="checkbox"<?php checked( $value, 'yes' ); ?>>
                 <?php echo esc_html( $label ); ?>
             </label>