Я новичок в этом и застрял здесь. Я думаю, что это просто проблема с тем, как я пишу свои запросы. У меня есть две таблицы project и project_participant. Я пытаюсь получить все записи из project (родительская таблица), объединить их с указанным c, связанной строкой из project_participant (дочерняя таблица) и отобразить их все. Таким образом, каждая запись, содержащаяся в project, будет отображаться один раз и только один раз, потому что каждый «проект» будет иметь только одну единственную строку, к которой он относится, в таблице project_participant, которая имеет поле, классифицирующее ее как «Спонсор».
Когда я запускаю запрос в phpmyadmin, вот так:
SELECT *
FROM project
NATURAL JOIN project_participant
WHERE project.project_id = project_participant.project_id
AND project_participant.participant_category = "Sponsor";
Это работает так, как я хочу. Но в моем файле get_project. php, когда я пытаюсь объединить этот запрос с функцией поиска, он вытянет дублирующиеся строки для каждой записи в project. В нем будет отдельная строка для каждого существующего участника, связанного с проектом, даже если другие связанные участники не отнесены к категории «Спонсор» (это могут быть Спонсор, Персонал, Факультет и т. Д. c.)
Подробнее информация: Когда я впервые перехожу на страницу get_project. php, записи отображаются правильно. но когда я ввожу текст в строку поиска и пытаюсь найти его, поиск не работает или ничего не фильтрует, он просто извлекает дубликаты, как упомянуто выше. Я знаю, что это близко к работе, потому что он работал правильно, когда я только искал в таблице project ранее, я пытался добавить объединение к project_participant в запрос. Я просто не могу понять это. Вот код для моего файла get_project. php:
<?php
// Initialize the session
session_start();
//include the pmo_functions.php file to add header, footer, and navbar
include 'pmo_functions.php';
include 'navbar.php';
//make a connection to the database for these specific tasks
$conn = pdo_connect_mysql();
/* Get the page via GET request (URL param: page), if not enough records exist for there to
be more than one page, default the page to 1*/
$page = isset($_GET['page']) && is_numeric($_GET['page']) ? (int)$_GET['page'] : 1;
// Number of records to show on each page, default to 5
$records_per_page = isset($_GET['records_per_page']) && (is_numeric($_GET['records_per_page']) || $_GET['records_per_page'] == 'All') ? $_GET['records_per_page'] : 5;
// These are the columns the users can "order by"
$order_by_list = array('project_id', 'project_category', 'organization_name', 'project_title', 'ksu_department', 'priority_level',
'start_date', 'end_date', 'funded', 'total_cost', 'description', 'last_name', 'first_name', 'participant_org', 'email', 'phone', 'approval');
// Get the column the user picks to order by (default to project_id)
$order_by = isset($_GET['order_by']) && in_array($_GET['order_by'], $order_by_list) ? $_GET['order_by'] : 'project_id';
// Sort by ascending or descending if specified, default to ascending
$order_sort = isset($_GET['order_sort']) && $_GET['order_sort'] == 'DESC' ? 'DESC' : 'ASC';
/*When user does a search for specific data, it will retrieve all the records in the database table
that contain the user-specified value, but it will default to only displaying 5 at a time. If the user
then selects "ALL", it will then display all of the records in the database table that contain the value the user
previously specified (on one page)*/
if (isset($_GET['search'])) {
if ($records_per_page == 'All') {
// SQL statement to get all records containing the specific search query
$stmt = $conn->prepare('SELECT * FROM project
NATURAL JOIN project_participant WHERE project.project_id = project_participant.project_id AND project_participant.participant_category ="Sponsor" LIKE :search_query
OR project.project_category LIKE :search_query
OR project.organization_name LIKE :search_query
OR project.project_title LIKE :search_query
OR project.ksu_department LIKE :search_query
OR project.priority_level LIKE :search_query
OR project.start_date LIKE :search_query
OR project.end_date LIKE :search_query
OR project.funded LIKE :search_query
OR project.total_cost LIKE :search_query
OR project.description LIKE :search_query
OR project_participant.last_name LIKE :search_query
OR project_participant.first_name LIKE :search_query
OR project_participant.participant_org LIKE :search_query
OR project_participant.email LIKE :search_query
OR project_participant.phone LIKE :search_query
OR project.approval LIKE :search_query
ORDER BY ' . $order_by . ' ' . $order_sort);
$stmt->bindValue(':search_query', '%' . $_GET['search'] . '%');
} else {
/*After the user does a search for records containing specific data, they can navigate back and
forth between pages of the records that contain the specific data, and also limit the amout of
these records they want displayed at a time for each page*/
$stmt = $conn->prepare('SELECT * FROM project
NATURAL JOIN project_participant WHERE project.project_id = project_participant.project_id AND project_participant.participant_category = "Sponsor" LIKE :search_query
OR project.project_category LIKE :search_query
OR project.organization_name LIKE :search_query
OR project.project_title LIKE :search_query
OR project.ksu_department LIKE :search_query
OR project.priority_level LIKE :search_query
OR project.start_date LIKE :search_query
OR project.end_date LIKE :search_query
OR project.funded LIKE :search_query
OR project.total_cost LIKE :search_query
OR project.description LIKE :search_query
OR project_participant.last_name LIKE :search_query
OR project_participant.first_name LIKE :search_query
OR project_participant.participant_org LIKE :search_query
OR project_participant.email LIKE :search_query
OR project_participant.phone LIKE :search_query
OR project.approval LIKE :search_query
ORDER BY ' . $order_by . ' ' . $order_sort . '
LIMIT :current_page, :record_per_page');
$stmt->bindValue(':search_query', '%' . $_GET['search'] . '%');
$stmt->bindValue(':current_page', ($page-1)*(int)$records_per_page, PDO::PARAM_INT);
$stmt->bindValue(':record_per_page', (int)$records_per_page, PDO::PARAM_INT);
}
}
/*If the user did not specify any data to search for and just clicked "All", it will pull up every
single record contained in the database table on one page*/
else {
if ($records_per_page == 'All') {
$stmt = $conn->prepare('SELECT * FROM project NATURAL JOIN project_participant WHERE project.project_id = project_participant.project_id AND project_participant.participant_category ="Sponsor" ORDER BY ' . $order_by . ' ' . $order_sort);
}
/*If the user did not specify any data to search for, they could navigate back and forth through pages
that contain every single record in the database table. The user can limit the number of records they
want to have displayed at a time (it will default to 5 at first).*/
else {
$stmt = $conn->prepare('SELECT * FROM project NATURAL JOIN project_participant WHERE project.project_id = project_participant.project_id AND project_participant.participant_category ="Sponsor" ORDER BY ' . $order_by . ' ' . $order_sort . ' LIMIT :current_page, :record_per_page');
$stmt->bindValue(':current_page', ($page-1)*(int)$records_per_page, PDO::PARAM_INT);
$stmt->bindValue(':record_per_page', (int)$records_per_page, PDO::PARAM_INT);
}
}
$stmt->execute();
// Fetch the records to be displayed.
$project = $stmt->fetchAll(PDO::FETCH_ASSOC);
/* Get the total number of records searched that match the specified search criteria, this is so
we can see if needs to have a next and previous button*/
if (isset($_GET['search'])) {
$stmt = $conn->prepare('SELECT COUNT(*) FROM project
NATURAL JOIN project_participant WHERE project.project_id = project_participant.project_id AND project_participant.participant_category ="Sponsor" LIKE :search_query
OR project.project_category LIKE :search_query
OR project.organization_name LIKE :search_query
OR project.project_title LIKE :search_query
OR project.ksu_department LIKE :search_query
OR project.priority_level LIKE :search_query
OR project.start_date LIKE :search_query
OR project.end_date LIKE :search_query
OR project.funded LIKE :search_query
OR project.total_cost LIKE :search_query
OR project.description LIKE :search_query
OR project_participant.last_name LIKE :search_query
OR project_participant.first_name LIKE :search_query
OR project_participant.participant_org LIKE :search_query
OR project_participant.email LIKE :search_query
OR project_participant.phone LIKE :search_query
OR project.approval LIKE :search_query');
$stmt->bindValue(':search_query', '%' . $_GET['search'] . '%');
$stmt->execute();
$num_project = $stmt->fetchColumn();
}
/*If no serch criteria was specified, just count all of the records in the database table
to see if there should be a next and previous button*/
else {
$num_project = $conn->query('SELECT COUNT(*) FROM project NATURAL JOIN project_participant WHERE project.project_id = project_participant.project_id AND project_participant.participant_category ="Sponsor"')->fetchColumn();
}
?>
<!--Add in header from pmo_functions.php and insert the title of this page, "Get Project"-->
<?=template_header('Get Project')?>
<!--beginning of container for the get project section-->
<div class="container">
<h2>All Projects - General Project & Sponsor Information</h2>
<!--beginning of container for a button that links back to create_project.php,
(this "Create Project" button can be deleted and the navbar could be used instead,
since that function is available, just thought this could be an option)
and the custom search bar.-->
<div>
<div class="d-inline-block">
<a class="btn btn-outline-primary btn-sm" href="create_project.php" role="button">Create Project</a>
</div>
<div class="d-inline-block">
<form action="get_project.php" method="get">
<input type="text" name="search" placeholder="Search..." value="<?=isset($_GET['search']) ? htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
</form>
</div>
</div>
<!--end of container for the Create_project.php button link and custom search bar-->
<!--Beginning of table for records to be displayed-->
<table>
<!--beginning of table column header row-->
<!--The records are ordered by project_id by default, but if the user clicks the
column heading i.e. "Title", the records will then be ordered by "Title".-->
<thead>
<tr>
<!--Project ID column header-->
<td>
<a href="get_project.php?page=1&records_per_page=<?=$records_per_page?>&order_by=project_id&order_sort=<?=$order_sort == 'ASC' ? 'DESC' : 'ASC'?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
ID
<?php if ($order_by == 'project_id'): ?>
<i class="fas fa-long-arrow-alt-<?=str_replace(array('ASC', 'DESC'), array('up', 'down'), $order_sort)?>"></i>
<?php endif; ?>
</a>
</td>
<!--Project Category column header-->
<td>
<a href="get_project.php?page=1&records_per_page=<?=$records_per_page?>&order_by=project_category&order_sort=<?=$order_sort == 'ASC' ? 'DESC' : 'ASC'?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
Category
<?php if ($order_by == 'project_category'): ?>
<i class="fas fa-long-arrow-alt-<?=str_replace(array('ASC', 'DESC'), array('up', 'down'), $order_sort)?>"></i>
<?php endif; ?>
</a>
</td>
<!--Organization Name column header-->
<td>
<a href="get_project.php?page=1&records_per_page=<?=$records_per_page?>&order_by=organization_name&order_sort=<?=$order_sort == 'ASC' ? 'DESC' : 'ASC'?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
Organization
<?php if ($order_by == 'organization_name'): ?>
<i class="fas fa-long-arrow-alt-<?=str_replace(array('ASC', 'DESC'), array('up', 'down'), $order_sort)?>"></i>
<?php endif; ?>
</a>
</td>
<!--Project Title column header-->
<td>
<a href="get_project.php?page=1&records_per_page=<?=$records_per_page?>&order_by=project_title&order_sort=<?=$order_sort == 'ASC' ? 'DESC' : 'ASC'?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
Title
<?php if ($order_by == 'project_title'): ?>
<i class="fas fa-long-arrow-alt-<?=str_replace(array('ASC', 'DESC'), array('up', 'down'), $order_sort)?>"></i>
<?php endif; ?>
</a>
</td>
<!--Department column header-->
<td>
<a href="get_project.php?page=1&records_per_page=<?=$records_per_page?>&order_by=ksu_department&order_sort=<?=$order_sort == 'ASC' ? 'DESC' : 'ASC'?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
KSU Department
<?php if ($order_by == 'ksu_department'): ?>
<i class="fas fa-long-arrow-alt-<?=str_replace(array('ASC', 'DESC'), array('up', 'down'), $order_sort)?>"></i>
<?php endif; ?>
</a>
</td>
<!--Priority Level column header-->
<td>
<a href="get_project.php?page=1&records_per_page=<?=$records_per_page?>&order_by=priority_level&order_sort=<?=$order_sort == 'ASC' ? 'DESC' : 'ASC'?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
Priority
<?php if ($order_by == 'priority_level'): ?>
<i class="fas fa-long-arrow-alt-<?=str_replace(array('ASC', 'DESC'), array('up', 'down'), $order_sort)?>"></i>
<?php endif; ?>
</a>
</td>
<!--Start Date column header-->
<td>
<a href="get_project.php?page=1&records_per_page=<?=$records_per_page?>&order_by=start_date&order_sort=<?=$order_sort == 'ASC' ? 'DESC' : 'ASC'?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
Start Date
<?php if ($order_by == 'start_date'): ?>
<i class="fas fa-long-arrow-alt-<?=str_replace(array('ASC', 'DESC'), array('up', 'down'), $order_sort)?>"></i>
<?php endif; ?>
</a>
</td>
<!--End Date column header-->
<td>
<a href="get_project.php?page=1&records_per_page=<?=$records_per_page?>&order_by=end_date&order_sort=<?=$order_sort == 'ASC' ? 'DESC' : 'ASC'?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
End Date
<?php if ($order_by == 'end_date'): ?>
<i class="fas fa-long-arrow-alt-<?=str_replace(array('ASC', 'DESC'), array('up', 'down'), $order_sort)?>"></i>
<?php endif; ?>
</a>
</td>
<!--Funded column header-->
<td>
<a href="get_project.php?page=1&records_per_page=<?=$records_per_page?>&order_by=funded&order_sort=<?=$order_sort == 'ASC' ? 'DESC' : 'ASC'?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
Funded
<?php if ($order_by == 'funded'): ?>
<i class="fas fa-long-arrow-alt-<?=str_replace(array('ASC', 'DESC'), array('up', 'down'), $order_sort)?>"></i>
<?php endif; ?>
</a>
</td>
<!--Cost column header-->
<td>
<a href="get_project.php?page=1&records_per_page=<?=$records_per_page?>&order_by=total_cost&order_sort=<?=$order_sort == 'ASC' ? 'DESC' : 'ASC'?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
Cost
<?php if ($order_by == 'total_cost'): ?>
<i class="fas fa-long-arrow-alt-<?=str_replace(array('ASC', 'DESC'), array('up', 'down'), $order_sort)?>"></i>
<?php endif; ?>
</a>
</td>
<!--Description column header-->
<td>
<a href="get_project.php?page=1&records_per_page=<?=$records_per_page?>&order_by=description&order_sort=<?=$order_sort == 'ASC' ? 'DESC' : 'ASC'?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
Description
<?php if ($order_by == 'description'): ?>
<i class="fas fa-long-arrow-alt-<?=str_replace(array('ASC', 'DESC'), array('up', 'down'), $order_sort)?>"></i>
<?php endif; ?>
</a>
</td>
<!--Last Name column header-->
<td>
<a href="get_project.php?page=1&records_per_page=<?=$records_per_page?>&order_by=last_name&order_sort=<?=$order_sort == 'ASC' ? 'DESC' : 'ASC'?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
Sponsor's Last Name
<?php if ($order_by == 'last_name'): ?>
<i class="fas fa-long-arrow-alt-<?=str_replace(array('ASC', 'DESC'), array('up', 'down'), $order_sort)?>"></i>
<?php endif; ?>
</a>
</td>
<!--First Name column header-->
<td>
<a href="get_project.php?page=1&records_per_page=<?=$records_per_page?>&order_by=first_name&order_sort=<?=$order_sort == 'ASC' ? 'DESC' : 'ASC'?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
Sponsor's First Name
<?php if ($order_by == 'first_name'): ?>
<i class="fas fa-long-arrow-alt-<?=str_replace(array('ASC', 'DESC'), array('up', 'down'), $order_sort)?>"></i>
<?php endif; ?>
</a>
</td>
<!--Participant's Organization column header-->
<td>
<a href="get_project.php?page=1&records_per_page=<?=$records_per_page?>&order_by=participant_org&order_sort=<?=$order_sort == 'ASC' ? 'DESC' : 'ASC'?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
Sponsor's Organizaion
<?php if ($order_by == 'participant_org'): ?>
<i class="fas fa-long-arrow-alt-<?=str_replace(array('ASC', 'DESC'), array('up', 'down'), $order_sort)?>"></i>
<?php endif; ?>
</a>
</td>
<!--Email column header-->
<td>
<a href="get_project.php?page=1&records_per_page=<?=$records_per_page?>&order_by=email&order_sort=<?=$order_sort == 'ASC' ? 'DESC' : 'ASC'?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
Sponsor's Email
<?php if ($order_by == 'email'): ?>
<i class="fas fa-long-arrow-alt-<?=str_replace(array('ASC', 'DESC'), array('up', 'down'), $order_sort)?>"></i>
<?php endif; ?>
</a>
</td>
<!--Phone column header-->
<td>
<a href="get_project.php?page=1&records_per_page=<?=$records_per_page?>&order_by=phone&order_sort=<?=$order_sort == 'ASC' ? 'DESC' : 'ASC'?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
Sponsor's Phone
<?php if ($order_by == 'phone'): ?>
<i class="fas fa-long-arrow-alt-<?=str_replace(array('ASC', 'DESC'), array('up', 'down'), $order_sort)?>"></i>
<?php endif; ?>
</a>
</td>
<!--Approval column header-->
<td>
<a href="get_project.php?page=1&records_per_page=<?=$records_per_page?>&order_by=approval&order_sort=<?=$order_sort == 'ASC' ? 'DESC' : 'ASC'?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
Approval Status
<?php if ($order_by == 'approval'): ?>
<i class="fas fa-long-arrow-alt-<?=str_replace(array('ASC', 'DESC'), array('up', 'down'), $order_sort)?>"></i>
<?php endif; ?>
</a>
</td>
<!--Empty cell column header for the column containing the edit/delete icon links-->
<td></td>
</tr>
</thead><!--end of table column header section-->
<!--Body of table that will populate rows with the values of each field in a record-->
<tbody>
<?php foreach ($project as $project): ?>
<tr>
<td><?=$project['project_id']?></td>
<td><?=$project['project_category']?></td>
<td><?=$project['organization_name']?></td>
<td><?=$project['project_title']?></td>
<td><?=$project['ksu_department']?></td>
<td><?=$project['priority_level']?></td>
<td><?=$project['start_date']?></td>
<td><?=$project['end_date']?></td>
<td><?=$project['funded']?></td>
<td><?=$project['total_cost']?></td>
<td><?=$project['description']?></td>
<td><?=$project['last_name']?></td>
<td><?=$project['first_name']?></td>
<td><?=$project['participant_org']?></td>
<td><?=$project['email']?></td>
<td><?=$project['phone']?></td>
<td><?=$project['approval']?></td>
<!--Populate the end of each row with icons links that edit and delete each record-->
<td>
<a href="update_project.php?project_id=<?=$project['project_id']?>"><i class="fas fa-pen fa-xs"></i></a>
<a href="delete_project.php?project_id=<?=$project['project_id']?>"><i class="fas fa-trash fa-xs"></i></a>
<a href="view_project.php?project_id=<?=$project['project_id']?>"><i class="fas fa-eye fa-xs"></i></a>
</td>
</tr>
<?php endforeach; ?>
</tbody>
</table>
<!--End of table for records to be displayed-->
<!--Beginning of container for the bottom of the get project section-->
<div>
<!--Beginning of container for the records per page selections-->
<div>
<a href="get_project.php?page=1&records_per_page=5&order_by=<?=$order_by?>&order_sort=<?=$order_sort?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">5</a>
<a href="get_project.php?page=1&records_per_page=10&order_by=<?=$order_by?>&order_sort=<?=$order_sort?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">10</a>
<a href="get_project.php?page=1&records_per_page=20&order_by=<?=$order_by?>&order_sort=<?=$order_sort?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">20</a>
<a href="get_project.php?page=1&records_per_page=50&order_by=<?=$order_by?>&order_sort=<?=$order_sort?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">50</a>
<a href="get_project.php?page=1&records_per_page=100&order_by=<?=$order_by?>&order_sort=<?=$order_sort?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">100</a>
<a href="get_project.php?page=1&records_per_page=All&order_by=<?=$order_by?>&order_sort=<?=$order_sort?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">All</a>
</div>
<!--End of container for the records per page selections-->
<!--Beginning of container for the pagination
(displays Page and the page number, and a page navigation arrow the user can
click to move page to page).-->
<div>
<?php if ($page > 1): ?>
<a href="get_project.php?page=<?=$page-1?>&records_per_page=<?=$records_per_page?>&order_by=<?=$order_by?>&order_sort=<?=$order_sort?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
<i class="fas fa-angle-double-left fa-sm"></i>
</a>
<?php endif; ?>
<!--Beginning of container for "Page" and the page number displayed-->
<div href="get_project.php?page=<?=$page?>&records_per_page=<?=$records_per_page?>&order_by=<?=$order_by?>&order_sort=<?=$order_sort?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
Page <?=$page?>
</div>
<!--End of container for just the page and number displayed-->
<?php if ($records_per_page != 'All' && $page*$records_per_page < $num_project): ?>
<a href="get_project.php?page=<?=$page+1?>&records_per_page=<?=$records_per_page?>&order_by=<?=$order_by?>&order_sort=<?=$order_sort?><?=isset($_GET['search']) ? '&search=' . htmlentities($_GET['search'], ENT_QUOTES) : ''?>">
<i class="fas fa-angle-double-right fa-sm"></i>
</a>
<?php endif; ?>
</div>
<!--End of container for the pagination-->
</div>
<!--End of container for the bottom of the get project section-->
</div>
<!--end of container for the get project section-->
<!--Add in footer from pmo_functions.php-->
<?=template_footer()?>
Спасибо за чтение!