/usr/share/wordpress/wp-content/themes/twentyfourteen/inc/featured-content.php is in wordpress-theme-twentyfourteen 3.8.2+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 | <?php
/**
* Twenty Fourteen Featured Content
*
* This module allows you to define a subset of posts to be displayed
* in the theme's Featured Content area.
*
* For maximum compatibility with different methods of posting users
* will designate a featured post tag to associate posts with. Since
* this tag now has special meaning beyond that of a normal tags, users
* will have the ability to hide it from the front-end of their site.
*/
class Featured_Content {
/**
* The maximum number of posts a Featured Content area can contain.
*
* We define a default value here but themes can override
* this by defining a "max_posts" entry in the second parameter
* passed in the call to add_theme_support( 'featured-content' ).
*
* @see Featured_Content::init()
*
* @since Twenty Fourteen 1.0
*
* @static
* @access public
* @var int
*/
public static $max_posts = 15;
/**
* Instantiate.
*
* All custom functionality will be hooked into the "init" action.
*
* @static
* @access public
* @since Twenty Fourteen 1.0
*/
public static function setup() {
add_action( 'init', array( __CLASS__, 'init' ), 30 );
}
/**
* Conditionally hook into WordPress.
*
* Theme must declare that they support this module by adding
* add_theme_support( 'featured-content' ); during after_setup_theme.
*
* If no theme support is found there is no need to hook into WordPress.
* We'll just return early instead.
*
* @static
* @access public
* @since Twenty Fourteen 1.0
*/
public static function init() {
$theme_support = get_theme_support( 'featured-content' );
// Return early if theme does not support Featured Content.
if ( ! $theme_support ) {
return;
}
/*
* An array of named arguments must be passed as the second parameter
* of add_theme_support().
*/
if ( ! isset( $theme_support[0] ) ) {
return;
}
// Return early if "featured_content_filter" has not been defined.
if ( ! isset( $theme_support[0]['featured_content_filter'] ) ) {
return;
}
$filter = $theme_support[0]['featured_content_filter'];
// Theme can override the number of max posts.
if ( isset( $theme_support[0]['max_posts'] ) ) {
self::$max_posts = absint( $theme_support[0]['max_posts'] );
}
add_filter( $filter, array( __CLASS__, 'get_featured_posts' ) );
add_action( 'customize_register', array( __CLASS__, 'customize_register' ), 9 );
add_action( 'admin_init', array( __CLASS__, 'register_setting' ) );
add_action( 'save_post', array( __CLASS__, 'delete_transient' ) );
add_action( 'delete_post_tag', array( __CLASS__, 'delete_post_tag' ) );
add_action( 'customize_controls_enqueue_scripts', array( __CLASS__, 'enqueue_scripts' ) );
add_action( 'pre_get_posts', array( __CLASS__, 'pre_get_posts' ) );
add_action( 'wp_loaded', array( __CLASS__, 'wp_loaded' ) );
}
/**
* Hide "featured" tag from the front-end.
*
* Has to run on wp_loaded so that the preview filters of the customizer
* have a chance to alter the value.
*
* @static
* @access public
* @since Twenty Fourteen 1.0
*/
public static function wp_loaded() {
if ( self::get_setting( 'hide-tag' ) ) {
add_filter( 'get_terms', array( __CLASS__, 'hide_featured_term' ), 10, 2 );
add_filter( 'get_the_terms', array( __CLASS__, 'hide_the_featured_term' ), 10, 3 );
}
}
/**
* Get featured posts.
*
* @static
* @access public
* @since Twenty Fourteen 1.0
*
* @return array Array of featured posts.
*/
public static function get_featured_posts() {
$post_ids = self::get_featured_post_ids();
// No need to query if there is are no featured posts.
if ( empty( $post_ids ) ) {
return array();
}
$featured_posts = get_posts( array(
'include' => $post_ids,
'posts_per_page' => count( $post_ids ),
) );
return $featured_posts;
}
/**
* Get featured post IDs
*
* This function will return the an array containing the
* post IDs of all featured posts.
*
* Sets the "featured_content_ids" transient.
*
* @static
* @access public
* @since Twenty Fourteen 1.0
*
* @return array Array of post IDs.
*/
public static function get_featured_post_ids() {
// Return array of cached results if they exist.
$featured_ids = get_transient( 'featured_content_ids' );
if ( ! empty( $featured_ids ) ) {
return array_map( 'absint', (array) $featured_ids );
}
$settings = self::get_setting();
// Return sticky post ids if no tag name is set.
$term = get_term_by( 'name', $settings['tag-name'], 'post_tag' );
if ( $term ) {
$tag = $term->term_id;
} else {
return self::get_sticky_posts();
}
// Query for featured posts.
$featured = get_posts( array(
'numberposts' => $settings['quantity'],
'tax_query' => array(
array(
'field' => 'term_id',
'taxonomy' => 'post_tag',
'terms' => $tag,
),
),
) );
// Return array with sticky posts if no Featured Content exists.
if ( ! $featured ) {
return self::get_sticky_posts();
}
// Ensure correct format before save/return.
$featured_ids = wp_list_pluck( (array) $featured, 'ID' );
$featured_ids = array_map( 'absint', $featured_ids );
set_transient( 'featured_content_ids', $featured_ids );
return $featured_ids;
}
/**
* Return an array with IDs of posts maked as sticky.
*
* @static
* @access public
* @since Twenty Fourteen 1.0
*
* @return array Array of sticky posts.
*/
public static function get_sticky_posts() {
$settings = self::get_setting();
return array_slice( get_option( 'sticky_posts', array() ), 0, $settings['quantity'] );
}
/**
* Delete featured content ids transient.
*
* Hooks in the "save_post" action.
*
* @see Featured_Content::validate_settings().
*
* @static
* @access public
* @since Twenty Fourteen 1.0
*/
public static function delete_transient() {
delete_transient( 'featured_content_ids' );
}
/**
* Exclude featured posts from the home page blog query.
*
* Filter the home page posts, and remove any featured post ID's from it.
* Hooked onto the 'pre_get_posts' action, this changes the parameters of
* the query before it gets any posts.
*
* @static
* @access public
* @since Twenty Fourteen 1.0
*
* @param WP_Query $query WP_Query object.
* @return WP_Query Possibly-modified WP_Query.
*/
public static function pre_get_posts( $query ) {
// Bail if not home or not main query.
if ( ! $query->is_home() || ! $query->is_main_query() ) {
return;
}
$page_on_front = get_option( 'page_on_front' );
// Bail if the blog page is not the front page.
if ( ! empty( $page_on_front ) ) {
return;
}
$featured = self::get_featured_post_ids();
// Bail if no featured posts.
if ( ! $featured ) {
return;
}
// We need to respect post ids already in the blacklist.
$post__not_in = $query->get( 'post__not_in' );
if ( ! empty( $post__not_in ) ) {
$featured = array_merge( (array) $post__not_in, $featured );
$featured = array_unique( $featured );
}
$query->set( 'post__not_in', $featured );
}
/**
* Reset tag option when the saved tag is deleted.
*
* It's important to mention that the transient needs to be deleted,
* too. While it may not be obvious by looking at the function alone,
* the transient is deleted by Featured_Content::validate_settings().
*
* Hooks in the "delete_post_tag" action.
*
* @see Featured_Content::validate_settings().
*
* @static
* @access public
* @since Twenty Fourteen 1.0
*
* @param int $tag_id The term_id of the tag that has been deleted.
* @return void
*/
public static function delete_post_tag( $tag_id ) {
$settings = self::get_setting();
if ( empty( $settings['tag-id'] ) || $tag_id != $settings['tag-id'] ) {
return;
}
$settings['tag-id'] = 0;
$settings = self::validate_settings( $settings );
update_option( 'featured-content', $settings );
}
/**
* Hide featured tag from displaying when global terms are queried from the front-end.
*
* Hooks into the "get_terms" filter.
*
* @static
* @access public
* @since Twenty Fourteen 1.0
*
* @param array $terms List of term objects. This is the return value of get_terms().
* @param array $taxonomies An array of taxonomy slugs.
* @return array A filtered array of terms.
*
* @uses Featured_Content::get_setting()
*/
public static function hide_featured_term( $terms, $taxonomies ) {
// This filter is only appropriate on the front-end.
if ( is_admin() ) {
return $terms;
}
// We only want to hide the featured tag.
if ( ! in_array( 'post_tag', $taxonomies ) ) {
return $terms;
}
// Bail if no terms were returned.
if ( empty( $terms ) ) {
return $terms;
}
foreach( $terms as $order => $term ) {
if ( self::get_setting( 'tag-id' ) == $term->term_id && 'post_tag' == $term->taxonomy ) {
unset( $terms[ $order ] );
}
}
return $terms;
}
/**
* Hide featured tag from display when terms associated with a post object
* are queried from the front-end.
*
* Hooks into the "get_the_terms" filter.
*
* @static
* @access public
* @since Twenty Fourteen 1.0
*
* @param array $terms A list of term objects. This is the return value of get_the_terms().
* @param int $id The ID field for the post object that terms are associated with.
* @param array $taxonomy An array of taxonomy slugs.
* @return array Filtered array of terms.
*
* @uses Featured_Content::get_setting()
*/
public static function hide_the_featured_term( $terms, $id, $taxonomy ) {
// This filter is only appropriate on the front-end.
if ( is_admin() ) {
return $terms;
}
// Make sure we are in the correct taxonomy.
if ( 'post_tag' != $taxonomy ) {
return $terms;
}
// No terms? Return early!
if ( empty( $terms ) ) {
return $terms;
}
foreach( $terms as $order => $term ) {
if ( self::get_setting( 'tag-id' ) == $term->term_id ) {
unset( $terms[ $term->term_id ] );
}
}
return $terms;
}
/**
* Register custom setting on the Settings -> Reading screen.
*
* @static
* @access public
* @since Twenty Fourteen 1.0
*
* @return void
*/
public static function register_setting() {
register_setting( 'featured-content', 'featured-content', array( __CLASS__, 'validate_settings' ) );
}
/**
* Add settings to the Customizer.
*
* @static
* @access public
* @since Twenty Fourteen 1.0
*
* @param WP_Customize_Manager $wp_customize Theme Customizer object.
*/
public static function customize_register( $wp_customize ) {
$wp_customize->add_section( 'featured_content', array(
'title' => __( 'Featured Content', 'twentyfourteen' ),
'description' => sprintf( __( 'Use the <a href="%1$s">"featured" tag</a> to feature your posts. You can change this to a tag of your choice; if no posts match the tag, <a href="%2$s">sticky posts</a> will be displayed instead.', 'twentyfourteen' ), admin_url( '/edit.php?tag=featured' ), admin_url( '/edit.php?show_sticky=1' ) ),
'priority' => 130,
'theme_supports' => 'featured-content',
) );
// Add Featured Content settings.
$wp_customize->add_setting( 'featured-content[tag-name]', array(
'default' => 'featured',
'type' => 'option',
'sanitize_js_callback' => array( __CLASS__, 'delete_transient' ),
) );
$wp_customize->add_setting( 'featured-content[hide-tag]', array(
'default' => true,
'type' => 'option',
'sanitize_js_callback' => array( __CLASS__, 'delete_transient' ),
) );
// Add Featured Content controls.
$wp_customize->add_control( 'featured-content[tag-name]', array(
'label' => __( 'Tag Name', 'twentyfourteen' ),
'section' => 'featured_content',
'priority' => 20,
) );
$wp_customize->add_control( 'featured-content[hide-tag]', array(
'label' => __( 'Don’t display tag on front end.', 'twentyfourteen' ),
'section' => 'featured_content',
'type' => 'checkbox',
'priority' => 30,
) );
}
/**
* Enqueue the tag suggestion script.
*
* @static
* @access public
* @since Twenty Fourteen 1.0
*/
public static function enqueue_scripts() {
wp_enqueue_script( 'featured-content-suggest', get_template_directory_uri() . '/js/featured-content-admin.js', array( 'jquery', 'suggest' ), '20131022', true );
}
/**
* Get featured content settings.
*
* Get all settings recognized by this module. This function
* will return all settings whether or not they have been stored
* in the database yet. This ensures that all keys are available
* at all times.
*
* In the event that you only require one setting, you may pass
* its name as the first parameter to the function and only that
* value will be returned.
*
* @static
* @access public
* @since Twenty Fourteen 1.0
*
* @param string $key The key of a recognized setting.
* @return mixed Array of all settings by default. A single value if passed as first parameter.
*/
public static function get_setting( $key = 'all' ) {
$saved = (array) get_option( 'featured-content' );
$defaults = array(
'hide-tag' => 1,
'quantity' => 6,
'tag-id' => 0,
'tag-name' => 'featured',
);
$options = wp_parse_args( $saved, $defaults );
$options = array_intersect_key( $options, $defaults );
$options['quantity'] = self::sanitize_quantity( $options['quantity'] );
if ( 'all' != $key ) {
return isset( $options[ $key ] ) ? $options[ $key ] : false;
}
return $options;
}
/**
* Validate featured content settings.
*
* Make sure that all user supplied content is in an expected
* format before saving to the database. This function will also
* delete the transient set in Featured_Content::get_featured_content().
*
* @static
* @access public
* @since Twenty Fourteen 1.0
*
* @param array $input Array of settings input.
* @return array Validated settings output.
*/
public static function validate_settings( $input ) {
$output = array();
if ( empty( $input['tag-name'] ) ) {
$output['tag-id'] = 0;
} else {
$term = get_term_by( 'name', $input['tag-name'], 'post_tag' );
if ( $term ) {
$output['tag-id'] = $term->term_id;
} else {
$new_tag = wp_create_tag( $input['tag-name'] );
if ( ! is_wp_error( $new_tag ) && isset( $new_tag['term_id'] ) ) {
$output['tag-id'] = $new_tag['term_id'];
}
}
$output['tag-name'] = $input['tag-name'];
}
if ( isset( $input['quantity'] ) ) {
$output['quantity'] = self::sanitize_quantity( $input['quantity'] );
}
$output['hide-tag'] = isset( $input['hide-tag'] ) && $input['hide-tag'] ? 1 : 0;
// Delete the featured post ids transient.
self::delete_transient();
return $output;
}
/**
* Sanitize quantity of featured posts.
*
* @static
* @access public
* @since Twenty Fourteen 1.0
*
* @param int $input The value to sanitize.
* @return int A number between 1 and FeaturedContent::$max_posts.
*/
public static function sanitize_quantity( $input ) {
$quantity = absint( $input );
if ( $quantity > self::$max_posts ) {
$quantity = self::$max_posts;
} else if ( 1 > $quantity ) {
$quantity = 1;
}
return $quantity;
}
} // Featured_Content
Featured_Content::setup();
|