Adding textarea "description box" to widget [Wordpress] - php

Question

My widget is showingmin my admin area but when I click it so that it can drop down so that I may enter information... it only shows the DELETE link, CLOSE link and SAVE button. the widget will not expand. I believe I am missing something in the script for the textarea causing the widget not to function properly.
<?php
if( !class_exists('smWidget') ):
class smWidget extends WP_Widget {
// constructor
function smWidget() {
// Give widget name here
$widget_ops = array('description' => __('Displays a selected post from a selected post type.', 'ci_theme'));
parent::WP_Widget('smWidget', $name='-= SM Item =-', $widget_ops);
}
// display widget
function widget($args, $instance) {
extract( $args );
$ci_post_id = $instance['postid'];
$post_type_name = $instance['post_type_name'];
if( empty($ci_post_id) or empty($post_type_name) )
return;
$q = new WP_Query( array(
'post_type' => $post_type_name,
'p' => $ci_post_id
) );
echo $before_widget;
$title = apply_filters( 'widget_title', empty( $instance['title']) ? '' : $instance['title'], $instance, $this->id_base );
if ($title)
echo $before_title . $title . $after_title;
while ( $q->have_posts() ): $q->the_post();
global $post;
if ( get_post_type() == 'testimonial' ) :
?>
<div class="testimonial-wrap">
<div class="testimonial-inner">
<blockquote> <i class="fa fa-quote-left"></i>
<?php the_content(); ?>
<cite>
<?php the_title(); ?>
</cite> </blockquote>
</div>
</div>
<?php
elseif ( get_post_type() == 'video' ) :
?>
<div <?php post_class('item'); ?>>
<?php
$video = get_post_meta($post->ID, 'ci_cpt_video_url', true);
echo wp_oembed_get($video);
?>
</div>
<?php
else :
get_template_part('loop', 'item');
endif;
endwhile;
wp_reset_postdata();
echo $after_widget;
}
function update($new_instance, $old_instance)
{
$instance = $old_instance;
$instance['title'] = sanitize_text_field($new_instance['title']);
$instance['post_type_name'] = sanitize_key($new_instance['post_type_name']);
$instance['postid'] = absint($new_instance['postid']);
$instance['teatarea'] = absint($new_instance['textarea']);
return $instance;
}
function form($instance){
$defaults = array(
'title' => '',
'post_type_name' => 'post',
'postid' => '',
'textarea' => '',
);
$instance = wp_parse_args( (array) $instance, $defaults );
$title = $instance['title'];
$post_type_name = $instance['post_type_name'];
$post_id = $instance['postid'];
$textarea = $instance['textarea'];
?>
<p>
<label for="<?php echo $this->get_field_id('title'); ?>">
<?php _e('Title (optional):', 'ci_theme'); ?>
</label>
<input id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo esc_attr($title); ?>" class="widefat" />
</p>
<?php
$post_types = get_post_types( array('public' => true), 'objects' );
unset($post_types['attachment'], $post_types['slider']);
?>
<p>
<label for="<?php echo $this->get_field_id('post_type_name'); ?>">
<?php _e('Show posts from this post type:', 'ci_theme'); ?>
<label>
</p>
<?php ?>
<select name="<?php echo $this->get_field_name('post_type_name'); ?>" id="<?php echo $this->get_field_id('post_type_name'); ?>" >
<?php
foreach( $post_types as $key => $pt )
{
?>
<option value="<?php echo esc_attr($key); ?>" <?php selected($key, $post_type_name); ?>><?php echo $pt->labels->name; ?></option>
<?php
}
?>
</select>
<img src="<?php echo get_child_or_parent_file_uri('/panel/img/ajax-loader-16x16.gif'); ?>" class="loading_posts" style="display: none;">
<?php
?>
<p></p>
<?php
?>
<p>
<label for="<?php echo $this->get_field_id('postid'); ?>">
<?php _e('Select a post to show:', 'ci_theme'); ?>
</label>
</p>
<?php
?>
<p class="ci_widget_post_type_posts_dropdown">
<?php
wp_dropdown_posts(
array(
'post_type' => $post_type_name,
'show_option_none' => ' ',
'selected' => $post_id,
'class' => 'widefat'
),
$this->get_field_name('postid')
);
?>
</p>
<?php
?>
<p>
<label for="<?php echo $this->get_field_id('textarea'); ?>">
<?php _e('Description:', 'ci_theme'); ?>
</label>
<textarea class="widefat" id="<?php echo $this->get_field_id('textarea'); ?>" name="<?php echo $this->get_field_name('textarea'); ?>" rows="7" cols="20" ><?php echo $textarea; ?></textarea>
</p>
<?php
}
static function _ajax_get_posts()
{
$post_type_name = sanitize_key($_POST['post_type_name']);
$name_field = esc_attr($_POST['name_field']);
$str = wp_dropdown_posts(
array(
'echo' => false,
'post_type' => $post_type_name,
'show_option_none' => ' ',
'class' => 'widefat'
),
$name_field
);
echo $str;
die;
}
} // class
register_widget('smWidget');
add_action('wp_ajax_ci_widget_post_type_ajax_get_posts', 'smWidget::_ajax_get_posts');
endif; // !class_exists
?>