到目前为止,我已经弄清楚了这 3 个模型:
用户模型
module.exports = {
schema: true,
attributes: {
// Relations
maps: {
collection: 'Map'
},
}
};
map 模型
module.exports = {
schema: true,
attributes: {
// Relations
owner: {
model: 'User'
},
spots: {
collection: 'Spot',
via: 'map'
},
}
};
现货模型
module.exports = {
schema: true,
attributes: {
// Relations
map: {
model: 'Map'
},
parentSpot: {
model: 'Spot'
},
subSpotss: {
collection: 'Spot',
via: 'parentSpot'
},
}
};
所以,如果我按用户查询 map ,我会得到,即:
{
"owner": "1",
"id": "1",
"spots": [
{
"map": "1",
"title": "Test Spot",
"content_text": "asdasdasdasdasd",
"createdAt": "2015-07-14T15:39:50.066Z",
"updatedAt": "2015-07-14T15:39:50.066Z",
"id": "1"
},
{
"map": "1",
"title": "Another Spot",
"content_text": "hue hue hue hue hue",
"createdAt": "2015-07-14T15:40:17.313Z",
"updatedAt": "2015-07-14T15:40:17.313Z",
"id": "2"
}
],
"createdAt": "2015-07-14T15:38:32.571Z",
"updatedAt": "2015-07-14T15:38:32.571Z"
}
此外,我想要的是将其他点嵌套在点内,所以我得到这样的结果:
{
"owner": "1",
"id": "1",
"spots": [
{
"map": "1",
"title": "Test Spot",
"content_text": "asdasdasdasdasd",
"spots": [
{
"map": "1",
"title": "Nested Spot",
"content_text": "dfgsdsfasdf",
"spots": [
{
"map": "1",
"title": "Another Nested Spot",
"content_text": "sometesxtisdjfiasj",
"spots": [
{
// more nested levels here
},
{
// more nested levels here
},
],
"createdAt": "2015-07-14T15:39:50.066Z",
"updatedAt": "2015-07-14T15:39:50.066Z",
"id": "5"
},
{
// more nested levels here
},
],
"createdAt": "2015-07-14T15:39:50.066Z",
"updatedAt": "2015-07-14T15:39:50.066Z",
"id": "3"
},
{
// another nested Spot which can have a collections of
// more Nested spots
},
{
// one more nested Spot which can have a collections of
// more Nested spots
}
],
"createdAt": "2015-07-14T15:39:50.066Z",
"updatedAt": "2015-07-14T15:39:50.066Z",
"id": "1"
},
所以,基本上,在一个 map 内,我想要有多个“起始”地点,其中可以有嵌套的级别。我正在寻找一些东西,但只能找到与树相关的示例,这些示例只能左和右,而我希望有两个以上的选项。
如何在 Sails
模型中编写它?这到底可行吗?欢迎提出更好的设计建议。
最佳答案
你的模型是正确的。这是因为 sails 目前不支持在嵌套模型中填充。您可以通过这样做来覆盖默认查询 solution .
关于node.js - 如何实现模型本身的嵌套 - Mongodb & Sails,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/31415596/