我正在尝试显示评论和回复,但我真的不知道该怎么做.这是我的桌子.

comment_id | byy | user_comment | topic_id | parent_id |

1 |obi |comment 1 | 1 | 0 |

2 |chima |comment 2 | 1 | 0 |

3 |eze |comment 1 reply | 1 | 1 |

4 |david |comment 2 reply | 1 | 2 |

我写的这段代码只是为了显示评论,但我希望评论能够显示评论的回复(如果有的话).在它显示下一个评论之前

$querycomment = comment::find()->where(['topic_id'=> Yii::$app->getRequest()->getQueryParam('id')])->all();

foreach ($querycomment as $detail) {

if($detail['parent_id']==0) {

echo 'Country Name: '.$detail['user_comment'].'';

echo 'State Name: '.$detail['byy'].'';

echo 'City Name: '.$detail['name'].'';

echo '';

}

}

?>

解决方法:

以下是以下伪代码的实际代码：

// print comments and/or replies body

function print_comments( $topic_id, $parent_id ) {

$all_comments = Comment::find()

->where(

'topic_id' => $topic_id,

'parent_id' => $parent_id

)->all();

if( empty($all_comment) ) {

return "";

}

$comments = '

• ';

foreach( $all_comments as $comment ) {

$comments .= '

'.$comment->user_comment.'

by: '.$comment->byy.'

';

// print replies

$comments .= print_comments( $topic_id, $comment->comment_id ); // recursive

$comments .= '

';

}

$comments .= '

';

return $comments;

}

?>

将上面的代码放在视图文件的顶部.现在使用以下行显示/回显您的评论和回复.

<?php echo print_comments( Yii::$app->getRequest()->getQueryParam('id'), 0); ?>

(上一个答案)

您可以尝试遵循此伪代码：

print_comments( queryParam(id), 0); // parent_id = 0

// print comments and/or replies body

print_comments ( $topic_id, $parent_id ) {

$all_comments = Comment::find()

->where(

topic_id => $topic_id,

parent_id => $parent_id

)->all();

if( $all_comment count = zero )

return

foreach( $all_comments as $comment ) {

$comment->user_comment

by: $comment->byy

// print replies

print_comments( $topic_id, $comment->comment_id ); // recursive

}

}

优点：更易于理解和实施.

缺点：使用大量查询.

任何其他方式来克服利弊？

请记住,当与分页一起使用时,这种做法很难实现.

>使用单个查询获取所有评论和回复

>将所有这些格式化为comment =>回复关系

>循环关系并显示它

标签：php,mysql,yii2

来源： https://codeday.me/bug/20190627/1309900.html