我有一个Relationship
表,将教师与学生联系起来
Teacher Student
1 1
1 2
2 1
2 3
Students
表格中有关于学生的具体数据
Id Date of birth First Name
1 1990-10-10 Bill Smith
2 1989-01-03 Adam Smithson
我想选择所有的老师学生1.现在我这样做(这是推动ORM语法)。
$relationships = RelationshipQuery::create()->filterByTeacher($teacherid)->find();
foreach($relationships as $relationship){
$studentId = $relationship->getStudent();
//use the studentId to get the actual student object
$student = StudentQuery::create()->findPk($studentId);
//after I get the student, I add it to an array
$students[] = $student;
}
这个问题是我最终得到一个数组,而不是我们在做正常->find()
时最终得到的通常的propelCollection。有没有办法清理这个查询(使用连接或类似的东西),以便我从一开始就得到一个PropelCollection?
答案 0 :(得分:0)
您应该为关系定义架构,如下所示:http://www.propelorm.org/wiki/Documentation/1.5/Relationships#Many-to-ManyRelationships
您要求的代码非常简单:
$teacher = TeacherQuery::create()->findOneById($teacherId);
$students = $teacher->getStudents(); //Your students collection