Cakephp如何基于另一个表创建虚拟字段

Question

我有2个表：projects，project_types。

The relations are as follow:
    Project => belong to => ProjectType    
    ProjectType => hasMany   => Project

The columns are as follow
    Project => id, project_type_id, name, description  
    ProjectType => id, name

如何基于project_type_id创建一个名为projectTypeName的虚拟字段，其名称来自projectType，对于那些project_type_id
= 0的字段，它将为“”

我有这个

public $virtualFields = array(
    'projectTypeName' => "IF(Project.project_type_id = 9, 'sales', '')"     
);

它正确显示为“ sales”，但我不想一一指定。

谢谢

Answer 1

这对我有用

public $virtualFields = array(
 'projectTypeName' => 'SELECT name FROM project_types where id = Project.project_type_id'
);