关于使用PHP7.1，Silverstripe 3.6.0和MySQL的Web应用程序的问题。该应用程序托管在PaaS提供商上。因此，我没有直接访问数据库，也无法调整InnoDB，就像错误消息所暗示的那样。
我有一个包含大量字段的自定义DataObject。它在尝试保存时返回一个奇怪的错误：
无法运行查询：[...这里的大更新查询...]行大小太大（> 8126）。将某些列更改为TEXT或BLOB或使用ROW_FORMAT = DYNAMIC或ROW_FORMAT = COMPRESSED可能会有所帮助。在当前行格式中，760字节的BLOB前缀以内联方式存储。
在这里，您可以找到我班级的简短版本：
class APIPersonResource extends DataObject {
private static $db = array(
'ResourceID' => 'Int',
'Firstname' => 'Varchar(255)',
'Lastname' => 'Varchar(255)',
'Salutation' => 'Varchar(255)',
'Email' => 'Varchar(255)',
'HomepageLink' => 'Text',
'PhoneNo' => 'Varchar(255)',
'Info' => 'HTMLText',
'IsResponsible' => 'Boolean',
'ResponsibleDescription' => 'Varchar(255)',
'ShortBio' => 'HTMLText',
'RoomNo' => 'Varchar',
'IsActive' => 'Boolean',
'IsAcademic' => 'Boolean',
'HasImage' => 'Boolean',
'HasLinksSection' => 'Boolean',
'HasCv' => 'Boolean',
'HasPublications' => 'Boolean',
'HasOfficeHours' => 'Boolean',
'AreaOfFocus' => 'Varchar(64)',
'OleLink' => 'Text',
'ReserveCollectionLink' => 'Text',
'ResearchAreas' => 'HTMLText',
'APIDepartmentResourceID' => 'Int',
'APIAddressResourceID' => 'Int',
'APIDegreeResourceID' => 'Int'
);
}
ShortBio，AreaOfFocus，ResearchAreas和Info都是用户输入字段，可以变得很长。奇怪的是，这些字段的类型为HTMLText，在数据库表中，列的类型为mediumtext：
MariaDB [leonixyz]> describe APIPersonResource;
+------------------------------+---------------------------------------------------+------+-----+-------------------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------------------------+---------------------------------------------------+------+-----+-------------------+----------------+
| ID | int(11) | NO | PRI | NULL | auto_increment |
| ClassName | enum('APIPersonResource','APIPhdStudentResource') | YES | MUL | APIPersonResource | |
| LastEdited | datetime | YES | | NULL | |
| Created | datetime | YES | | NULL | |
| Salutation_en_US | varchar(255) | YES | | NULL | |
| Salutation_de_DE | varchar(255) | YES | | NULL | |
| Salutation_it_IT | varchar(255) | YES | | NULL | |
| ResponsibleDescription_en_US | varchar(255) | YES | | NULL | |
| ResponsibleDescription_de_DE | varchar(255) | YES | | NULL | |
| ResponsibleDescription_it_IT | varchar(255) | YES | | NULL | |
| ShortBio_en_US | mediumtext | YES | | NULL | |
| ShortBio_de_DE | mediumtext | YES | | NULL | |
| ShortBio_it_IT | mediumtext | YES | | NULL | |
| ResourceID | int(11) | NO | | 0 | |
| Firstname | varchar(255) | YES | | NULL | |
| Lastname | varchar(255) | YES | | NULL | |
| Salutation | varchar(255) | YES | | NULL | |
| Email | varchar(255) | YES | | NULL | |
| PhoneNo | varchar(255) | YES | | NULL | |
| IsResponsible | tinyint(1) unsigned | NO | | 0 | |
| ResponsibleDescription | varchar(255) | YES | | NULL | |
| ShortBio | mediumtext | YES | | NULL | |
| IsActive | tinyint(1) unsigned | NO | | 0 | |
| HasActiveContract | tinyint(1) unsigned | NO | | 0 | |
| APIDepartmentResourceID | int(11) | NO | | 0 | |
| RoomNo | varchar(50) | YES | | NULL | |
| HasImage | tinyint(1) unsigned | NO | | 0 | |
| HasCv | tinyint(1) unsigned | NO | | 0 | |
| HasPublications | tinyint(1) unsigned | NO | | 0 | |
| APIAddressResourceID | int(11) | NO | | 0 | |
| AreaOfFocus_en_US | varchar(64) | YES | | NULL | |
| AreaOfFocus_de_DE | varchar(64) | YES | | NULL | |
| AreaOfFocus_it_IT | varchar(64) | YES | | NULL | |
| AreaOfFocus | varchar(64) | YES | | NULL | |
| HomepageLink | mediumtext | YES | | NULL | |
| Info_en_US | mediumtext | YES | | NULL | |
| Info_de_DE | mediumtext | YES | | NULL | |
| Info_it_IT | mediumtext | YES | | NULL | |
| ResearchAreas_en_US | mediumtext | YES | | NULL | |
| ResearchAreas_de_DE | mediumtext | YES | | NULL | |
| ResearchAreas_it_IT | mediumtext | YES | | NULL | |
| Info | mediumtext | YES | | NULL | |
| HasLinksSection | tinyint(1) unsigned | NO | | 0 | |
| HasOfficeHours | tinyint(1) unsigned | NO | | 0 | |
| OleLink | mediumtext | YES | | NULL | |
| ReserveCollectionLink | mediumtext | YES | | NULL | |
| ResearchAreas | mediumtext | YES | | NULL | |
| APIDegreeResourceID | int(11) | NO | | 0 | |
| IsAcademic | tinyint(1) unsigned | NO | | 0 | |
+------------------------------+---------------------------------------------------+------+-----+-------------------+----------------+
有没有办法解决这个问题而不将我的对象分成几部分？
提前致谢
您应该重构模型（例如，使用与has_one和belongs_to的1：1关系），或者将RowFormat设置为压缩。这可以使用此代码按照DataObject完成（来自SS3，但也适用于SS4）：
private static $create_table_options = array(
'MySQLDatabase' => 'ENGINE=InnoDB ROW_FORMAT=COMPRESSED'
);