我在节点开发人员中使用了dresende / node-orm2 ORM。但是我需要进行一些LEFT / RIGHT联接,但是我在文档中找不到方法。尝试进行多个连接时,我也遇到了问题。

此代码:

crModel.hasOne ('client', cliModel, {

    field:  'client_id'
});

crModel.hasOne ('office', boModel, {

    field:  'bo_id'
});

crModel.findByClient ({}).findByOffice ({}).find ({

    client_id:  1,
    bo_id:      1
}, function () {

    console.log (arguments);
});


生成此查询:

SELECT `t1`.`cr_id`, `t1`.`cr_datetime`, `t1`.`credit_id`, `t1`.`gs_id`, `t1`.`cellphone_id`, `t1`.`bo_id`, `t1`.`client_id` FROM `CreditRequests` `t1` JOIN `BranchOffices` `t2` ON `t2`.`bo_id` = `t1`.`bo_id` WHERE `t1`.`client_id` = 1 AND `t1`.`bo_id` = 1


谢谢,对我的英语不好感到抱歉。

最佳答案

ORM的窍门是预想这种关系,而不是使它起作用的命令。对于ORM2,有一个hasMany关联-我将从那里开始。从文档:

patient.getDoctors(function..)           // List of doctors
patient.addDoctors(docs, function...)    // Adds entries to join table
patient.setDoctors(docs, function...)    // Removes existing entries in join table, adds new ones
patient.hasDoctors(docs, function...)    // Checks if patient is associated to specified doctors
patient.removeDoctors(docs, function...) // Removes specified doctors from join table

doctor.getPatients(function..)
etc...

// You can also do:
patient.doctors = [doc1, doc2];
patient.save(...)


https://github.com/dresende/node-orm2

10-06 12:08