我无法从以下OOP类
中设置的属性中获取正确的值class person {
private $defaults = [
'post_types' => [],
'number' => 1,
'use_referrers' => true,
'in_same_term' => false,
'include' => [],
'exclude' => [],
'taxonomy' => 'category',
'include_children' => true,
'previous' => true,
'boundary_posts' => false,
'anchor_text' => '%anchor',
'post_link_text' => '%text',
'separator' => '</br>',
'span_separator' => '</br>',
'span_text_prev' => 'Older post: ',
'span_text_next' => 'Newer post: ',
'span_text_oldest' => 'Oldest post: ',
'span_text_newest' => 'Newest post: ',
];
public $post;
public $is_referred_post = false;
public $is_author_referrer = false;
public $is_search_referrer = false;
public $is_tax_referrer = false;
public function post( $post ) {
$this->post = get_queried_object();
return $this->post;
}
public function referrers_defaults() {
//Set is_author_referrer if query_var aq is set
if( isset( $_GET['aq'] ) ) {
$this->is_author_referrer = true;
}
//Set is_search_referrer if query_var sq is set
if( isset( $_GET['sq'] ) ) {
$this->is_search_referrer = true;
}
//Set is_tax_referrer if query_var tq is set
if( isset( $_GET['tq'] ) ) {
$this->is_tax_referrer = true;
}
//Set is_referred_post if the current single post has one of the query_vars in the URL
if( $this->is_author_referrer || $this->is_search_referrer || $this->is_tax_referrer ) {
$this->is_referred_post = true;
}
return $this;
}
}
$a = new person();
?><pre><?php var_dump($a); ?></pre><?php
这是我从var_dump( $a );
object(person)#569 (6) {
["defaults":"person":private]=>
array(18) {
["post_types"]=>
array(0) {
}
["number"]=>
int(1)
["use_referrers"]=>
bool(true)
["in_same_term"]=>
bool(false)
["include"]=>
array(0) {
}
["exclude"]=>
array(0) {
}
["taxonomy"]=>
string(8) "category"
["include_children"]=>
bool(true)
["previous"]=>
bool(true)
["boundary_posts"]=>
bool(false)
["anchor_text"]=>
string(7) "%anchor"
["post_link_text"]=>
string(5) "%text"
["separator"]=>
string(5) "
"
["span_separator"]=>
string(5) "
"
["span_text_prev"]=>
string(12) "Older post: "
["span_text_next"]=>
string(12) "Newer post: "
["span_text_oldest"]=>
string(13) "Oldest post: "
["span_text_newest"]=>
string(13) "Newest post: "
}
["post"]=>
NULL
["is_referred_post"]=>
bool(false)
["is_author_referrer"]=>
bool(false)
["is_search_referrer"]=>
bool(false)
["is_tax_referrer"]=>
bool(false)
}
我的问题是本节
["post"]=>
NULL
["is_referred_post"]=>
bool(false)
["is_author_referrer"]=>
bool(false)
["is_search_referrer"]=>
bool(false)
["is_tax_referrer"]=>
bool(false)
['post']不应该是NULL，它应该提供当前帖子的值。如果我做var_dump($a->post());我确实得到了post对象。
另外，假设在网址?aq=2中设置了以下变量，["is_author_referrer"]和["is_referred_post"]应该返回true，但他们会尽可能返回false请参阅var_dump()。
为什么没有为这些属性设置正确的值。我在OOP中缺少什么
答案 0 :(得分：2)
$a->post()调用post 方法，这不是属性。当您调用此方法时，该方法将从某处获取值（get_queried_object）。返回此值，但也存储在post属性中。我认为这就是你认为应该填补财产的原因。但是在调用该方法之前，该属性将保持为空。
我不知道最好的解决方案，因为我不知道你的应用程序的其余部分（比如，这个帖子对象是如何构建的，什么是get_queried_object以及从哪个点开始可用，等等）。不过，我希望我能为您找出问题，这将有助于您找到正确的解决方案。
一个可能的想法是从构造函数中设置$post，但就像我说的那样，这取决于其他因素是否可行：
public function __construct() {
$this->post = get_queried_object();
}
创建新对象时会调用构造函数__construct。
答案 1 :(得分：0)
我对构造函数有误解，感谢@GolezTrol我的工作正常
这是现阶段的最终工作版本
class person {
private $defaults = [
'post_types' => [],
'number' => 1,
'use_referrers' => true,
'in_same_term' => false,
'include' => [],
'exclude' => [],
'taxonomy' => 'category',
'include_children' => true,
'previous' => true,
'boundary_posts' => false,
'anchor_text' => '%anchor',
'post_link_text' => '%text',
'separator' => '</br>',
'span_separator' => '</br>',
'span_text_prev' => 'Older post: ',
'span_text_next' => 'Newer post: ',
'span_text_oldest' => 'Oldest post: ',
'span_text_newest' => 'Newest post: ',
];
public $current_post;
public $is_referred_post = false;
public $is_author_referrer = false;
public $is_search_referrer = false;
public $is_tax_referrer = false;
public function __construct() {
$this->init();
}
public function init() {
$this->getCurrentpost();
$this->referrers();
}
public function getCurrentpost() {
return $this->current_post = get_queried_object();
}
public function referrers() {
//Set is_author_referrer if query_var aq is set
if( isset( $_GET['aq'] ) ) {
$this->is_author_referrer = true;
}
//Set is_search_referrer if query_var sq is set
if( isset( $_GET['sq'] ) ) {
$this->is_search_referrer = true;
}
//Set is_tax_referrer if query_var tq is set
if( isset( $_GET['tq'] ) ) {
$this->is_tax_referrer = true;
}
//Set is_referred_post if the current single post has one of the query_vars in the URL
if( $this->is_author_referrer || $this->is_search_referrer || $this->is_tax_referrer ) {
$this->is_referred_post = true;
}
}
}
$a = new person();