其后全部转为该格式

{
    "status": "error",
    "message": "错误标题",
    "data": "错误信息",
    "extra": {
        "item1": "value1",
        "item2": "value2"
    }
}

status中的，成功 success 失败 error

根据ACID一致性原则，事务对于要修改连续相关的多条数据，非常便于操作。如果执行过程中，任意一步不成功就回滚，保存原有数据。

在模型中需要引入：

use think\facade\Db;

在开始事务前创建事务，Db::startTrans() 执行使用 try 执行语句，成功则 Db::commit() ,若出现问题在catch结构 中执行Db::roollback()

Db::startTrans();

try(

//执行相关语句

Db::commit();

)catch(\Exception $e){

Db::rollback();

return null;

}

相关代码范例：（其中一个方法）

Db::startTrans();
try {
    // 创建用户模型实例
    $userModel = new UserModel();
    // 创建订单模型实例
    $orderModel = new OrderModel();

    // 插入用户数据
    $userModel->save(['name' => 'bbb', 'age' => 20]);
    // 插入订单数据
    $orderModel->save(['user_id' => $userModel->id, 'amount' => 100]);

    // 提交事务
    Db::commit();
} catch (\Exception $e) {
    // 回滚事务
    Db::rollback();
}

手动触发事务

使用throw new \Exception(‘插入第二条数据失败’); 触发事务，捕获错误的信息$e->getMessage()

Db::startTrans();
    try {
        // 插入第一条数据
        $result1 = Db::table('table1')->insertGetId($data1);
        if (!$result1) {
            throw new \Exception('插入第一条数据失败');
        }

        // 插入第二条数据
        $result2 = Db::table('table2')->insert($data2);
        if (!$result2) {
            throw new \Exception('插入第二条数据失败');
        }

        // 提交事务
        Db::commit();
        return ['status' => 'success', 'message' => '数据插入成功'];
    } catch (\Exception $e) {
        // 回滚事务
        Db::rollback();
        // 返回错误信息
        return ['status' => 'error', 'message' => $e->getMessage()];
    }
}

简单工作流

载入模型（设置prompt提示词 图片 设置）

设置图片格式

输出图片

限制传入数据类型和数据信息

不要忘记引入：use think\facade\Request;

use think\facade\Request;

$data = Request::only(['name','email','id']);
$data['id'] = $this->request->get('id/d');
$data['id'] = $this->request->get('sexy/d',1);//设置默认为1
 

强制转换符号 d(数字) b(布尔) s(字符串) a(数组) f(浮点)

标识符	描述	示例
/s	字符串类型转换	$this->request->get('param/s')
/a	数组类型转换	$this->request->get('param/a')
/b	布尔类型转换	$this->request->get('param/b')
/f	浮点类型转换	$this->request->get('param/f')
/int	整型转换（等同于 /d）	$this->request->get('param/int')
/bool 或 /boolean	布尔类型转换	$this->request->get('param/bool') 或 $this->request->get('param/boolean')

save 插入信息 输入 $_POST

$user = new User;
// post数组中只有name和email字段会写入
$user->allowField(['name','email'])->save($_POST);

//或者

$user = new User;
// 过滤post数组中的非数据表字段数据
$data = Request::only(['name','email']);
$user->save($data);

// 获取自增ID
echo $user->user_id;

多个条目插入 saveAll()

$user = new User;
$list = [
    ['name'=>'thinkphp','email'=>'thinkphp@qq.com'],
    ['name'=>'onethink','email'=>'onethink@qq.com']
];
$user->saveAll($list);

CREATE静态

$user = User::create([
    'name'  =>  'thinkphp',
    'email' =>  'thinkphp@qq.com'
]);
echo $user->name;
echo $user->email;
echo $user->id; // 获取自增ID

更新 SAVE 需要主键，使用数组限制allowField来更新

$user = new User;
$list = [
    ['name'=>'thinkphp','email'=>'thinkphp@qq.com'],
    ['name'=>'onethink','email'=>'onethink@qq.com']
];
$user->saveAll($list);


$user = new User;
$list = [
    ['id'=>1, 'name'=>'thinkphp', 'email'=>'thinkphp@qq.com'],
    ['id'=>2, 'name'=>'onethink', 'email'=>'onethink@qq.com']
];
$user->saveAll($list);

#使用allowField来更新
$user->allowField(['name', 'email'])->save($_POST);

#传入前过滤，在控制器里面设置
$user = User::find(1);
// post数组中只有name和email字段会写入
$data = Request::only(['name','email']);
# $data为传入只保留name和email
$user->save($data);

UPDATE静态更新 不会更新update_time 需要主键

User::update(['name' => 'thinkphp'], ['id' => 1]);

from camera import Camera, GrabMode, PixelFormat, FrameSize, GainCeiling
import time
cam = Camera(
    data_pins=[45,47,14,40,5,42,41,39],
    vsync_pin=21,
    href_pin=38,
    sda_pin=17,
    scl_pin=18,
    pclk_pin=48,
    xclk_pin=-1,
    xclk_freq=20000000,
    powerdown_pin=46,
    reset_pin=9,
    pixel_format=PixelFormat.RGB565,
    frame_size=FrameSize.QVGA,
    jpeg_quality=90,
    fb_count=2)
cam.init()

#f=open("a.jpg","wb")
#f.write(bytes(img))
#f.close()

while 1:
    c=time.ticks_ms()
    img = cam.capture()
    time.sleep_ms(100)
    e=time.ticks_ms()
    print(1/((e-c)/1000),"FPS")

LCD ST7789 和ESP32S3 OV2640

from machine import Pin, SPI
import st7789py as st7789
spi=SPI(1,baudrate=20000000, polarity=1, sck=Pin(6), mosi=Pin(7),miso=Pin(15))
tft=st7789.ST7789(spi,240,320,reset=Pin(3, Pin.OUT),cs=Pin(16, Pin.OUT),dc=Pin(10, Pin.OUT),backlight=Pin(11, Pin.OUT),)
tft.rotation(1)
tft.fill(st7789.GREEN)
from camera import Camera, GrabMode, PixelFormat, FrameSize, GainCeiling
import time
cam = Camera(
    data_pins=[45,47,14,40,5,42,41,39],
    vsync_pin=21,
    href_pin=38,
    sda_pin=17,
    scl_pin=18,
    pclk_pin=48,
    xclk_pin=-1,
    xclk_freq=20000000,
    powerdown_pin=46,
    reset_pin=9,
    pixel_format=PixelFormat.RGB565,
    frame_size=FrameSize.QVGA,grab_mode=GrabMode.LATEST, fb_count=2)
cam.init()


while 1:
    c=time.ticks_ms()
    img = cam.capture()
    tft.blit_buffer(img, 0, 0, 240, 320)
    e=time.ticks_ms()
    print(1/((e-c)/1000),"FPS")