Custom Post Type templates not found - php

Question

I have created a custom post type for cars which I have bootstraped off this tutorial. I am having a problem where I am getting 404 returned instead of archive-car.php and single-car.php. I have also tried to add the plural versions to the template names, however, no success. What could be wrong? Am I missing something?
<?php
if( ! function_exists( 'quote_create_post_type' ) ) :
function quote_create_post_type() {
$labels = array(
'name' => 'Cars',
'singular_name' => 'Car',
'add_new' => 'Add Car',
'all_items' => 'All Cars',
'add_new_item' => 'Add Car',
'edit_item' => 'Edit car',
'new_item' => 'New car',
'view_item' => 'View car',
'search_items' => 'Search cars',
'not_found' => 'No cars found',
'not_found_in_trash' => 'No cars found in trash',
'parent_item_colon' => 'Parent car'
//'menu_name' => default to 'name'
);
$args = array(
'labels' => $labels,
'public' => true,
'has_archive' => true,
'publicly_queryable' => true,
'query_var' => true,
'rewrite' => true,
'capability_type' => 'post',
'hierarchical' => false,
'supports' => array(
'title',
'editor',
'excerpt',
'thumbnail',
//'author',
//'trackbacks',
//'custom-fields',
//'comments',
'revisions',
//'page-attributes', // (menu order, hierarchical must be true to show Parent option)
//'post-formats',
),
'menu_position' => 5,
'exclude_from_search' => true,
'register_meta_box_cb' => 'quote_add_post_type_metabox'
);
register_post_type( 'car', $args );
//flush_rewrite_rules();
register_taxonomy( 'quote_category', // register custom taxonomy - category
'car',
array(
'hierarchical' => true,
'labels' => array(
'name' => 'Brands',
'singular_name' => 'Brand',
)
)
);
}
add_action( 'init', 'quote_create_post_type' );
function quote_add_post_type_metabox() { // add the meta box
add_meta_box( 'quote_metabox', 'Car Details', 'quote_metabox', 'car', 'normal' );
}
function quote_metabox() {
global $post;
// Noncename needed to verify where the data originated
echo '<input type="hidden" name="quote_post_noncename" value="' . wp_create_nonce( plugin_basename(__FILE__) ) . '" />';
// Get the data if its already been entered
$quote_post_name = get_post_meta($post->ID, '_quote_post_name', true);
$quote_post_desc = get_post_meta($post->ID, '_quote_post_desc', true);
// Echo out the field
?>
<table class="form-table">
<tr>
<th>
<label>Brand</label>
</th>
<td>
<input type="text" name="quote_post_name" value="<?php echo $quote_post_name; ?>">
<!-- classes: .small-text .regular-text .large-text -->
</td>
</tr>
<tr>
<th>
<label>Description</label>
</th>
<td>
<textarea name="quote_post_desc" class="large-text"><?php echo $quote_post_desc; ?></textarea>
</td>
</tr>
</table>
<?php
}
function quote_post_save_meta( $post_id, $post ) { // save the data
/*
* We need to verify this came from our screen and with proper authorization,
* because the save_post action can be triggered at other times.
*/
if ( ! isset( $_POST['quote_post_noncename'] ) ) { // Check if our nonce is set.
return;
}
if( !wp_verify_nonce( $_POST['quote_post_noncename'], plugin_basename(__FILE__) ) ) { // Verify that the nonce is valid.
return $post->ID;
}
// verify this came from the our screen and with proper authorization,
// because save_post can be triggered at other times
if( !wp_verify_nonce( $_POST['quote_post_noncename'], plugin_basename(__FILE__) ) ) {
return $post->ID;
}
// is the user allowed to edit the post or page?
if( ! current_user_can( 'edit_post', $post->ID )){
return $post->ID;
}
// ok, we're authenticated: we need to find and save the data
// we'll put it into an array to make it easier to loop though
$quote_post_meta['_quote_post_name'] = $_POST['quote_post_name'];
$quote_post_meta['_quote_post_desc'] = $_POST['quote_post_desc'];
// add values as custom fields
foreach( $quote_post_meta as $key => $value ) { // cycle through the $quote_post_meta array
// if( $post->post_type == 'revision' ) return; // don't store custom data twice
$value = implode(',', (array)$value); // if $value is an array, make it a CSV (unlikely)
if( get_post_meta( $post->ID, $key, FALSE ) ) { // if the custom field already has a value
update_post_meta($post->ID, $key, $value);
} else { // if the custom field doesn't have a value
add_post_meta( $post->ID, $key, $value );
}
if( !$value ) { // delete if blank
delete_post_meta( $post->ID, $key );
}
}
}
add_action( 'save_post', 'quote_post_save_meta', 1, 2 ); // save the custom fields
endif; // end of function_exists()
if( ! function_exists( 'view_quotes_posts' ) ) : // output
function view_quotes_posts($do_shortcode = 1, $strip_shortcodes = 0 ) {
$args = array(
'posts_per_page' => 10,
'offset' => 0,
//'category' => ,
'orderby' => 'menu_order, post_title', // post_date, rand
'order' => 'DESC',
//'include' => ,
//'exclude' => ,
//'meta_key' => ,
//'meta_value' => ,
'post_type' => 'car',
//'post_mime_type' => ,
//'post_parent' => ,
'post_status' => 'publish',
'suppress_filters' => true
);
$posts = get_posts( $args );
$html = '';
foreach ( $posts as $post ) {
$meta_name = get_post_meta( $post->ID, '_quote_post_name', true );
$meta_desc = get_post_meta( $post->ID, '_quote_post_desc', true );
$img = get_the_post_thumbnail( $post->ID, 'medium' );
if( empty( $img ) ) {
$img = '<img src="'.plugins_url( '/img/default.png', __FILE__ ).'">';
}
if( has_post_thumbnail( $post->ID ) ) {
$img = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'thumbnail' );
$img_url = $img[0];
//the_post_thumbnail( 'thumbnail' ); /* thumbnail, medium, large, full, thumb-100, thumb-200, thumb-400, array(100,100) */
}
$content = $post->post_content;
if( $do_shortcode == 1 ) {
$content = do_shortcode( $content );
}
if( $strip_shortcodes == 1 ) {
$content = strip_shortcodes( $content );
}
$content = wp_trim_words( $content, 30, '...');
$content = wpautop( $content );
$html .= '
<div>
<h3>'.$post->post_title.'</h3>
<div>
<p>Name: '.$meta_name.'</p>
<p>Description: '.$meta_desc.'</p>
</div>
<div>'.$img.'</div>
<div>'.$content.'</div>
</div>
';
}
$html = '<div class="wrapper">'.$html.'</div>';
return $html;
}
endif; // end of function_exists()
?>
Further Info
All I am doing is extending the TwentyFifteen theme.

Answer 1

If I had to put money on this, I would say that you have not updated your permalinks! Simply go to Settings >> Permalinks >> Post Name.
The codex provides a little more information:
Note: In some cases, the permalink structure must be updated in order for the new template files to be accessed when viewing posts of a custom post type. To do this, go to Administration Panels > Settings > Permalinks, change the permalink structure to a different structure, save the changes, and change it back to the desired structure.