我正试图为自己创建一个论坛,所以我可以从中学习。现在我需要它只显示一个具有正确board_id
的电路板上的'主题',你可以在第一张图片上看到电路板,第二张图片是带有主题的数据库,所以如果我点击' Nieuws&活动板只需要向我展示topicnaam(topicname)= salespage的记录。
我只是勉强得到这个,我不确定该怎么做。
聚苯乙烯。这是我的第一个问题,请告诉我,如果我做错了或者我错过了一些重要的信息。
**显示主题的代码:**
<?php
$toppic = $app->get_topics();
foreach($toppic as $topic){
echo '<a href="https://tom.lbmedia.nl/reactie"> <div id="topic">';
echo '<div id="topicimg">';
if(file_exists('assets/images/profielfotos/'.$topic['klant_id'])) {
echo '<img class="img-circle" src="/assets/images/profielfotos/'.$topic['klant_id'].'/'.$topic['foto'].'" />';
} else {
echo '<i class="fa fa-fw fa-user img-circle"></i>';
}
echo '</div><div id="topictekst">';
echo '<b>'.$topic['topicnaam'].'</b>';
echo ' - ' . $topic['voornaam'] . " " . $topic['achternaam'] ;
echo '<span style="float:right; margin-top:15px; margin-left:5px;">reacties</span> <span style="float:right; color:grey; margin-top:15px"class="fa fa-comment"></span>';
echo '<hr><span class="badge bg-red">' . $board['topic'] . '</span>';
echo '</div></div></a>';
}
?>
我正在使用的功能:
public function get_boards(){
$getBoards = $this->database->query("SELECT boards.*, ledenpagina.ledenpagina_id FROM boards
LEFT JOIN ledenpagina ON ledenpagina.ledenpagina_id = boards.ledenpagina_id
ORDER BY id DESC");
// $this->database->bind(":ledenpagina_id", $_SESSION['ledenpagina_id']);
$boards = $this->database->resultset();
return $boards;
}
public function get_topics(){
$getTopic = $this->database->query("
SELECT topics.*, klanten.foto, klanten.voornaam, klanten.achternaam FROM topics
LEFT JOIN klanten ON topics.klant_id=klanten.id
ORDER BY id ASC");
// $this->database->bind(":ledenpagina_id", $_SESSION['ledenpagina_id']);
$topics = $this->database->resultset();
return $topics;
}
答案 0 :(得分:0)
使用Join
以下是一个例子:
SELECT Boards.id, Boards.topic, Topics.board_id, Topics.topicnaam
FROM Boards
INNER JOIN Topics
ON Boards.id=Topics.board_id
WHERE Boards.id = 2;
答案 1 :(得分:0)
您的代码是:
如果您输入了电路板ID:
SELECT t.* FROM topics t
JOIN boards b
ON t.borad_id = b.id
WHERE b.id = 2
或
SELECT t.* FROM topics t
WHERE t.borad_id = 2
如果您有输入板描述:
SELECT t.* FROM topics t
JOIN boards b
ON t.borad_id = b.id
WHERE b.description = 'Nieuws & Events'