将数据插入具有外键字段的php表中 [英] Insert Data into a table in php which has a foreign key field
问题描述
我通过向其添加反馈表来修改现有项目.我需要将反馈表单数据存储到表调用 feedback_formtb 中.我对sql进行编码以创建此表.还有一个已经创建的表调用 profile_request ,我想从此 profile_request 表中获取一个外键.所以我将request_id字段添加为外键.(由于该部分已经开发,因此我无权编辑profile_request表) 我创建了一个文件调用 feedback_test.php .
I am modifiny an existing project by adding a feedback form to it. I need to store feedback form data into a table call feedback_formtb. I code the sql to create this table. And also there is an already created table call profile_request and I want to take a foreign key from this profile_request table. So I add the request_id field as the foreign key.(I have no permission to edit profile_request table because that part is already developed) I crate a file call feedback_test.php.
现在,我想将反馈表单数据插入到feedback_formtb表中.根据我的理解,我已经做到了.但是由于外键,我不确定这个sql插入查询是否正确,并且我是否正确地将数据插入到了表中(我没有用户界面,因为我要将此反馈表单添加到现有项目中). 如果有人可以帮助我告诉您可以的话,请多谢您的帮助.预先感谢.
Now I want to insert feedback form data to the feedback_formtb table. I have done it according to my understanding. But I am not sure whether this sql insert query is correct because of the foreign key and I is this correctly insert data to the table.(I have no user interfaces since i am asking to add this feed back form to the existing project). Really appreciate your help if some one can help me to tell where this is ok. Thanks in advance.
============== feedback_formtb表create ==================
===============feedback_formtb table create===================
DROP TABLE IF EXISTS `feedback_formtb`;
CREATE TABLE IF NOT EXISTS `feedback_formtb` (
`fid` int(10) NOT NULL,
`job_complete` tinyint(2) NOT NULL,
`satisfaction` double NOT NULL,
`reason` int(20) NOT NULL,
`comment` text NOT NULL,
`request_id` int(10) NOT NULL,
PRIMARY KEY (`fid`),
FOREIGN KEY (`request_id`) REFERENCES profile_requests(`id`)
)ENGINE=InnoDB DEFAULT CHARSET=latin1;
============= profile_requests表=================
=============profile_requests Table=================
DROP TABLE IF EXISTS `profile_requests`;
CREATE TABLE IF NOT EXISTS `profile_requests` (
`updated_at` timestamp NOT NULL DEFAULT current_timestamp() ON UPDATE current_timestamp(),
`created_at` timestamp NOT NULL DEFAULT current_timestamp(),
`created_by` int(10) UNSIGNED NOT NULL,
`updated_by` int(10) UNSIGNED NOT NULL,
`id` bigint(20) UNSIGNED NOT NULL AUTO_INCREMENT,
`user_id` int(10) UNSIGNED NOT NULL,
`profile_id` int(10) UNSIGNED NOT NULL,
`expected_date` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
`lat` float UNSIGNED NOT NULL,
`lng` float UNSIGNED NOT NULL,
`city_id` int(11) NOT NULL,
`message` varchar(100) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
`state` tinyint(3) UNSIGNED NOT NULL DEFAULT 1 COMMENT '1:new request, 2:accepted,3:rejected',
`urgent` tinyint(3) UNSIGNED NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=69 DEFAULT CHARSET=latin1;
================ feedback_test.php ================
=================feedback_test.php=================
<?php
require_once 'auth.php';
// assigning values
$id = $_JSON['fid'] ?? NULL;
$request_id = $_JSON['$request_id'] ?? NULL;
$job_complete = $_JSON['job_complete'] ?? NULL;
$satisfaction = $_JSON['satisfaction'] ?? NULL;
$reason = $_JSON['reason'] ?? NULL;
$comment = $_JSON['comment'] ?? NULL;
$success = TRUE;
$submit = $_JSON['submit'] ?? NULL;
if ($submit !== NULL) { // if submit success
if ($job_complete === NULL) { // if job_complete fails
echo json_encode(['error' => 'job_complete not provided']);
die;
}else if ($satisfaction === NULL) { // if satisfaction fails
echo json_encode(['error' => 'satisfaction not provided']);
die;
}else if ($reason === NULL) { //if reason fails
echo json_encode(['error' => 'job_complete not provided']);
die;
}else if ($comment === NULL) { //if comment fails
echo json_encode(['error' => 'job_complete not provided']);
die;
}
// Insert Data
$ips = $mysqli->prepare('INSERT INTO feedback_formtb (job_complete, satisfaction, reason, comment, request_id) VALUES (?, ?, ?, ?, ( SELECT id FROM profile_requests WHERE id = ? ))');
$ips->bind_param('idisi', $job_complete, $satisfaction, $reason, $comment, $request_id);
if($ips->execute()){
$success = TRUE;
}if (!$ips->execute()) {
echo json_encode(['error' => 'Fail to submit']);
die;
}
}
?>
推荐答案
您不需要子查询.只需使用$request_id
作为列的值即可.
You don't need the subquery. Just use $request_id
as the value of the column.
$ips = $mysqli->prepare('
INSERT INTO feedback_formtb (job_complete, satisfaction, reason, comment, request_id)
VALUES (?, ?, ?, ?, ?)');
外键约束将确保$request_id
有效.如果您尝试插入profile_requests
中不存在的ID,则会收到错误消息.
The foreign key constraint will ensure that $request_id
is valid. If you try to insert an ID that doesn't exist in profile_requests
, this will get an error.
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