Question

出于学习目的，我正在oop php中针对属性/广告开发cms。我有三个与数据透视表连接的表。

photos (name, extension, created_at, updated_at), 

property_photo (property_id, photo_id), 

properties (title, description, type_of_property, use_of_the_property, quadrature, location...)

当我尝试通过添加另一张照片来更新属性时，在我的数据透视表中，photo_id从photos表中获取了正确的id，但是我的property_id始终为0。现在我知道lastInsertId函数仅对INSERT无效，而对UPDATE不起作用不知道如何以不同的方式获取property_id。任何帮助表示赞赏。这是我在模型中的功能：

AdModel：

public function update_ad($data, $id)
{
    $this->db->query('UPDATE properties SET title=:title, description=:description, type_of_property=:type_of_property, use_of_the_property=:use_of_the_property, quadrature=:quadrature, location=:location, price=:price, sales_clerk_info=:sales_clerk_info, booked=:booked, type_of_market=:type_of_market, type_of_payment=:type_of_payment WHERE id=:id');
    $this->db->bind(':title', $data['title']);
    $this->db->bind(':description', $data['description']);
    $this->db->bind(':type_of_property', $data['type_of_property']);
    $this->db->bind(':use_of_the_property', $data['use_of_the_property']);
    $this->db->bind(':quadrature', $data['quadrature']);
    $this->db->bind(':location', $data['location']);
    $this->db->bind(':price', $data['price']);
    $this->db->bind(':sales_clerk_info', $data['sales_clerk_info']);
    $this->db->bind(':booked', $data['booked']);
    $this->db->bind(':type_of_market', $data['type_of_market']);
    $this->db->bind(':type_of_payment', $data['type_of_payment']);
    $this->db->bind(':id', $id);
    $this->db->execute();


    $property_last_id = $this->db->lastId();

    $dataimagecount = count($data['image']);

    for ($i=0; $i < $dataimagecount ; $i++) { 

    $extension[$i] = explode('.',$data['image'][$i]);

    $this->db->query('INSERT INTO photos (name, extension) VALUES (:name, :extension)');
    $this->db->bind(':name', $extension[$i]['0']);
    $this->db->bind(':extension', $extension[$i]['1']);
    $this->db->execute();

    $photo_last_id = $this->db->lastId();

    $this->db->query('INSERT INTO property_photo (property_id, photo_id) VALUES (:property_id, :photo_id)');
    $this->db->bind(':property_id', $property_last_id);
    $this->db->bind(':photo_id', $photo_last_id);
    $this->db->execute();
    }

    return true;
}

Answer 1

您已经有properties ID，您可以在UPDATE命令中使用它，并将其作为参数传递给此方法！！！

public function update_ad($data, $id)
{
    $this->db->query('UPDATE properties 
                        SET title=:title, description=:description, 
                            type_of_property=:type_of_property, 
                            use_of_the_property=:use_of_the_property, 
                            quadrature=:quadrature, 
                            location=:location, 
                            price=:price, 
                            sales_clerk_info=:sales_clerk_info, 
                            booked=:booked, 
                            type_of_market=:type_of_market, 
                            type_of_payment=:type_of_payment 
                    WHERE id=:id');

    $this->db->bind(':title', $data['title']);
    $this->db->bind(':description', $data['description']);
    $this->db->bind(':type_of_property', $data['type_of_property']);
    $this->db->bind(':use_of_the_property', $data['use_of_the_property']);
    $this->db->bind(':quadrature', $data['quadrature']);
    $this->db->bind(':location', $data['location']);
    $this->db->bind(':price', $data['price']);
    $this->db->bind(':sales_clerk_info', $data['sales_clerk_info']);
    $this->db->bind(':booked', $data['booked']);
    $this->db->bind(':type_of_market', $data['type_of_market']);
    $this->db->bind(':type_of_payment', $data['type_of_payment']);
    $this->db->bind(':id', $id);
    $this->db->execute();


    // --!! Changed code !!--    
    //$property_last_id = $this->db->lastId();


    $dataimagecount = count($data['image']);

    for ($i=0; $i < $dataimagecount ; $i++) { 

        $extension[$i] = explode('.',$data['image'][$i]);

        $this->db->query('INSERT INTO photos 
                                 (name, extension) 
                          VALUES (:name, :extension)');
        $this->db->bind(':name', $extension[$i]['0']);
        $this->db->bind(':extension', $extension[$i]['1']);
        $this->db->execute();

        $photo_last_id = $this->db->lastId();

        $this->db->query('INSERT INTO property_photo 
                                 (property_id, photo_id) 
                          VALUES (:property_id, :photo_id)');

        $this->db->bind(':property_id', $id);
    // changed code                     ^^^
        $this->db->bind(':photo_id', $photo_last_id);
        $this->db->execute();
    }

    return true;
}

在更新查询中获取lastInsertId的问题

1 个答案: