Sql 使用BookshelfFJS按相关表列对结果排序
我用BookshelfFJS使用“withRelated”查询了两个表。如何按相关表中的列对结果进行排序?例如,我想按Sql 使用BookshelfFJS按相关表列对结果排序,sql,node.js,bookshelf.js,Sql,Node.js,Bookshelf.js,我用BookshelfFJS使用“withRelated”查询了两个表。如何按相关表中的列对结果进行排序?例如,我想按rankingLinks.id .fetchAll({withRelated: ['tickerSymbolLinks.tickerSymbol', 'rankingLinks', 'logoLinks.logo']}) 看起来很简单,但在这个问题上我的头撞到了墙上…你实际上可以通过和相关的订购物品,但是,它只会在这个特定属性内订购结果。即: new Participant()
rankingLinks.id
.fetchAll({withRelated: ['tickerSymbolLinks.tickerSymbol', 'rankingLinks', 'logoLinks.logo']})
看起来很简单,但在这个问题上我的头撞到了墙上…你实际上可以通过
和相关的
订购物品,但是,它只会在这个特定属性内订购结果。即:
new Participant().query(function(qb) {
qb.orderBy('participants.id', 'desc'); // You don't have access to any "withRelated" models
}).fetchAll({
withRelated: [{
'courses': function(qb) {
qb.orderBy('courses.id', 'desc');
}
}]
}).then(function(result) {
res.json(result.toJSON());
});
此代码返回所有参与者,按其id排序(降序)。在此结果中,我按courses.id desc订购课程。结果如下:
[
{
"id": 3,
"name": "Susan Doe",
"created_at": 1429685077496,
"updated_at": 1429685077496,
"courses": [
{
"id": 3,
"course_name": "Advanced JavaScript",
"duration": 80,
"_pivot_participant_id": 3,
"_pivot_course_id": 3,
"_pivot_level": null,
"_pivot_grade": null,
"_pivot_date_of_attendance": null
},
{
"id": 1,
"course_name": "iOS development",
"duration": 120,
"_pivot_participant_id": 3,
"_pivot_course_id": 1,
"_pivot_level": null,
"_pivot_grade": null,
"_pivot_date_of_attendance": null
}
]
},
{
"id": 2,
"name": "Richard Doe",
"created_at": 1429685077496,
"updated_at": 1429685077496,
"courses": [
{
"id": 2,
"course_name": "Android development",
"duration": 60,
"_pivot_participant_id": 2,
"_pivot_course_id": 2,
"_pivot_level": null,
"_pivot_grade": null,
"_pivot_date_of_attendance": null
},
{
"id": 1,
"course_name": "iOS development",
"duration": 120,
"_pivot_participant_id": 2,
"_pivot_course_id": 1,
"_pivot_level": null,
"_pivot_grade": null,
"_pivot_date_of_attendance": null
}
]
},
{
"id": 1,
"name": "John Doe",
"created_at": 1429685077495,
"updated_at": 1429685077495,
"courses": [
{
"id": 3,
"course_name": "Advanced JavaScript",
"duration": 80,
"_pivot_participant_id": 1,
"_pivot_course_id": 3,
"_pivot_level": null,
"_pivot_grade": null,
"_pivot_date_of_attendance": null
},
{
"id": 1,
"course_name": "iOS development",
"duration": 120,
"_pivot_participant_id": 1,
"_pivot_course_id": 1,
"_pivot_level": null,
"_pivot_grade": null,
"_pivot_date_of_attendance": null
}
]
}
]
现在,如果我想按课程排序结果,我必须稍微更改查询。即:
new Course().query(function(qb) {
qb.orderBy('courses.id', 'desc');
}).fetchAll({
withRelated: ['participants']
}).then(function(result) {
res.json(result.toJSON());
});
这会产生稍微不同的结果,但具有所需的顺序:
[
{
"id": 3,
"course_name": "Advanced JavaScript",
"duration": 80,
"participants": [
{
"id": 1,
"name": "John Doe",
"created_at": 1429685077495,
"updated_at": 1429685077495,
"_pivot_course_id": 3,
"_pivot_participant_id": 1,
"_pivot_level": null,
"_pivot_grade": null,
"_pivot_date_of_attendance": null
},
{
"id": 3,
"name": "Susan Doe",
"created_at": 1429685077496,
"updated_at": 1429685077496,
"_pivot_course_id": 3,
"_pivot_participant_id": 3,
"_pivot_level": null,
"_pivot_grade": null,
"_pivot_date_of_attendance": null
}
]
},
{
"id": 2,
"course_name": "Android development",
"duration": 60,
"participants": [
{
"id": 2,
"name": "Richard Doe",
"created_at": 1429685077496,
"updated_at": 1429685077496,
"_pivot_course_id": 2,
"_pivot_participant_id": 2,
"_pivot_level": null,
"_pivot_grade": null,
"_pivot_date_of_attendance": null
}
]
},
{
"id": 1,
"course_name": "iOS development",
"duration": 120,
"participants": [
{
"id": 1,
"name": "John Doe",
"created_at": 1429685077495,
"updated_at": 1429685077495,
"_pivot_course_id": 1,
"_pivot_participant_id": 1,
"_pivot_level": null,
"_pivot_grade": null,
"_pivot_date_of_attendance": null
},
{
"id": 2,
"name": "Richard Doe",
"created_at": 1429685077496,
"updated_at": 1429685077496,
"_pivot_course_id": 1,
"_pivot_participant_id": 2,
"_pivot_level": null,
"_pivot_grade": null,
"_pivot_date_of_attendance": null
},
{
"id": 3,
"name": "Susan Doe",
"created_at": 1429685077496,
"updated_at": 1429685077496,
"_pivot_course_id": 1,
"_pivot_participant_id": 3,
"_pivot_level": null,
"_pivot_grade": null,
"_pivot_date_of_attendance": null
}
]
}
]
我希望这有点帮助 实际上,看起来我有一个错误“Company_VIMetrics_Links”表的子句条目中缺少”。我需要看一下相关表格吗?