mirror of
https://github.com/nocobase/nocobase
synced 2024-11-15 13:26:44 +00:00
Update belongs-to-many-repository.md
This commit is contained in:
parent
c45cd8dd5b
commit
0b249ee261
@ -1,43 +1,43 @@
|
|||||||
# BelongsToManyRepository
|
# BelongsToManyRepository
|
||||||
`BelongsToManyRepository` 是用于处理 `BelongsToMany` 关系的 `Relation Repository`。
|
|
||||||
|
|
||||||
不同于其他关系类型,`BelongsToMany` 类型的关系需要通过中间表来记录。
|
`BelongsToManyRepository` is the `Relation Repository` for handling `BelongsToMany` relationships.
|
||||||
在 `Nocobase` 中定义关联关系,可自动创建中间表,也可以明确指定中间表。
|
|
||||||
|
|
||||||
## 类方法
|
Unlike other relationship types, the `BelongsToMany` type of relationship needs to be recorded through an intermediate table. The intermediate table can be created automatically or explicitly specified when defining association relationships in NocoBase.
|
||||||
|
|
||||||
|
## Class Method
|
||||||
|
|
||||||
### `find()`
|
### `find()`
|
||||||
|
|
||||||
查找关联对象
|
Find associated objects.
|
||||||
|
|
||||||
**签名**
|
**Signature**
|
||||||
|
|
||||||
* `async find(options?: FindOptions): Promise<M[]>`
|
* `async find(options?: FindOptions): Promise<M[]>`
|
||||||
|
|
||||||
**详细信息**
|
**Detailed Information**
|
||||||
|
|
||||||
查询参数与 [`Repository.find()`](../repository.md#find) 一致。
|
Query parameters are the same as [`Repository.find()`](../repository.md#find).
|
||||||
|
|
||||||
### `findOne()`
|
### `findOne()`
|
||||||
|
|
||||||
查找关联对象,仅返回一条记录
|
Find associated objects, only to return one record.
|
||||||
|
|
||||||
**签名**
|
**Signature**
|
||||||
|
|
||||||
* `async findOne(options?: FindOneOptions): Promise<M>`
|
* `async findOne(options?: FindOneOptions): Promise<M>`
|
||||||
|
|
||||||
<embed src="../shared/find-one.md"></embed>
|
<embed src="../shared/find-one.md"></embed>
|
||||||
|
|
||||||
|
|
||||||
### `count()`
|
### `count()`
|
||||||
|
|
||||||
返回符合查询条件的记录数
|
Return the number of records matching the query criteria.
|
||||||
|
|
||||||
**签名**
|
**Signature**
|
||||||
|
|
||||||
* `async count(options?: CountOptions)`
|
* `async count(options?: CountOptions)`
|
||||||
|
|
||||||
**类型**
|
**Type**
|
||||||
|
|
||||||
```typescript
|
```typescript
|
||||||
interface CountOptions extends Omit<SequelizeCountOptions, 'distinct' | 'where' | 'include'>, Transactionable {
|
interface CountOptions extends Omit<SequelizeCountOptions, 'distinct' | 'where' | 'include'>, Transactionable {
|
||||||
filter?: Filter;
|
filter?: Filter;
|
||||||
@ -46,22 +46,23 @@ interface CountOptions extends Omit<SequelizeCountOptions, 'distinct' | 'where'
|
|||||||
|
|
||||||
### `findAndCount()`
|
### `findAndCount()`
|
||||||
|
|
||||||
从数据库查询特定条件的数据集和结果数。
|
Find datasets from the database with the specified filtering conditions and return the number of results.
|
||||||
|
|
||||||
**签名**
|
**Signature**
|
||||||
|
|
||||||
* `async findAndCount(options?: FindAndCountOptions): Promise<[any[], number]>`
|
* `async findAndCount(options?: FindAndCountOptions): Promise<[any[], number]>`
|
||||||
|
|
||||||
**类型**
|
**Type**
|
||||||
|
|
||||||
```typescript
|
```typescript
|
||||||
type FindAndCountOptions = CommonFindOptions
|
type FindAndCountOptions = CommonFindOptions
|
||||||
```
|
```
|
||||||
|
|
||||||
### `create()`
|
### `create()`
|
||||||
|
|
||||||
创建关联对象
|
Create associated objects.
|
||||||
|
|
||||||
**签名**
|
**Signature**
|
||||||
|
|
||||||
* `async create(options?: CreateOptions): Promise<M>`
|
* `async create(options?: CreateOptions): Promise<M>`
|
||||||
|
|
||||||
@ -69,9 +70,9 @@ type FindAndCountOptions = CommonFindOptions
|
|||||||
|
|
||||||
### `update()`
|
### `update()`
|
||||||
|
|
||||||
更新符合条件的关联对象
|
Update associated objects that match the conditions.
|
||||||
|
|
||||||
**签名**
|
**Signature**
|
||||||
|
|
||||||
* `async update(options?: UpdateOptions): Promise<M>`
|
* `async update(options?: UpdateOptions): Promise<M>`
|
||||||
|
|
||||||
@ -79,9 +80,9 @@ type FindAndCountOptions = CommonFindOptions
|
|||||||
|
|
||||||
### `destroy()`
|
### `destroy()`
|
||||||
|
|
||||||
删除符合条件的关联对象
|
Delete associated objects.
|
||||||
|
|
||||||
**签名**
|
**Signature**
|
||||||
|
|
||||||
* `async destroy(options?: TargetKey | TargetKey[] | DestroyOptions): Promise<Boolean>`
|
* `async destroy(options?: TargetKey | TargetKey[] | DestroyOptions): Promise<Boolean>`
|
||||||
|
|
||||||
@ -89,15 +90,15 @@ type FindAndCountOptions = CommonFindOptions
|
|||||||
|
|
||||||
### `add()`
|
### `add()`
|
||||||
|
|
||||||
添加新的关联对象
|
Add new associated objects.
|
||||||
|
|
||||||
**签名**
|
**Signature**
|
||||||
|
|
||||||
* `async add(
|
* `async add(
|
||||||
options: TargetKey | TargetKey[] | PrimaryKeyWithThroughValues | PrimaryKeyWithThroughValues[] | AssociatedOptions
|
options: TargetKey | TargetKey[] | PrimaryKeyWithThroughValues | PrimaryKeyWithThroughValues[] | AssociatedOptions
|
||||||
): Promise<void>`
|
): Promise<void>`
|
||||||
|
|
||||||
**类型**
|
**Type**
|
||||||
|
|
||||||
```typescript
|
```typescript
|
||||||
type PrimaryKeyWithThroughValues = [TargetKey, Values];
|
type PrimaryKeyWithThroughValues = [TargetKey, Values];
|
||||||
@ -107,11 +108,12 @@ interface AssociatedOptions extends Transactionable {
|
|||||||
}
|
}
|
||||||
```
|
```
|
||||||
|
|
||||||
**详细信息**
|
**Detailed Information**
|
||||||
|
|
||||||
可以直接传入关联对象的 `targetKey`,也可将 `targetKey` 与中间表的字段值一并传入。
|
Pass the `targetKey` of the associated object directly, or pass the `targetKey` along with the field values of the intermediate table.
|
||||||
|
|
||||||
|
**Example**
|
||||||
|
|
||||||
**示例**
|
|
||||||
```typescript
|
```typescript
|
||||||
const t1 = await Tag.repository.create({
|
const t1 = await Tag.repository.create({
|
||||||
values: { name: 't1' },
|
values: { name: 't1' },
|
||||||
@ -127,12 +129,12 @@ const p1 = await Post.repository.create({
|
|||||||
|
|
||||||
const PostTagRepository = new BelongsToManyRepository(Post, 'tags', p1.id);
|
const PostTagRepository = new BelongsToManyRepository(Post, 'tags', p1.id);
|
||||||
|
|
||||||
// 传入 targetKey
|
// Pass in the targetKey
|
||||||
PostTagRepository.add([
|
PostTagRepository.add([
|
||||||
t1.id, t2.id
|
t1.id, t2.id
|
||||||
]);
|
]);
|
||||||
|
|
||||||
// 传入中间表字段
|
// Pass in intermediate table fields
|
||||||
PostTagRepository.add([
|
PostTagRepository.add([
|
||||||
[t1.id, { tagged_at: '123' }],
|
[t1.id, { tagged_at: '123' }],
|
||||||
[t2.id, { tagged_at: '456' }],
|
[t2.id, { tagged_at: '456' }],
|
||||||
@ -141,25 +143,28 @@ PostTagRepository.add([
|
|||||||
|
|
||||||
### `set()`
|
### `set()`
|
||||||
|
|
||||||
设置关联对象
|
Set the associated objects.
|
||||||
|
|
||||||
|
**Signature**
|
||||||
|
|
||||||
**签名**
|
|
||||||
* async set(
|
* async set(
|
||||||
options: TargetKey | TargetKey[] | PrimaryKeyWithThroughValues | PrimaryKeyWithThroughValues[] | AssociatedOptions,
|
options: TargetKey | TargetKey[] | PrimaryKeyWithThroughValues | PrimaryKeyWithThroughValues[] | AssociatedOptions,
|
||||||
): Promise<void>
|
): Promise<void>
|
||||||
|
|
||||||
**详细信息**
|
**Detailed Information**
|
||||||
|
|
||||||
参数同 [add()](#add)
|
Parameters are the same as [add()](#add).
|
||||||
|
|
||||||
### `remove()`
|
### `remove()`
|
||||||
|
|
||||||
移除与给定对象之间的关联关系
|
Remove the association with the given objects.
|
||||||
|
|
||||||
|
**Signature**
|
||||||
|
|
||||||
**签名**
|
|
||||||
* `async remove(options: TargetKey | TargetKey[] | AssociatedOptions)`
|
* `async remove(options: TargetKey | TargetKey[] | AssociatedOptions)`
|
||||||
|
|
||||||
**类型**
|
**Type**
|
||||||
|
|
||||||
```typescript
|
```typescript
|
||||||
interface AssociatedOptions extends Transactionable {
|
interface AssociatedOptions extends Transactionable {
|
||||||
tk?: TargetKey | TargetKey[];
|
tk?: TargetKey | TargetKey[];
|
||||||
@ -168,14 +173,14 @@ interface AssociatedOptions extends Transactionable {
|
|||||||
|
|
||||||
### `toggle()`
|
### `toggle()`
|
||||||
|
|
||||||
切换关联对象。
|
Toggle the associated object.
|
||||||
|
|
||||||
在一些业务场景中,经常需要切换关联对象,比如用户收藏商品,用户可以取消收藏,也可以再次收藏。使用 `toggle` 方法可以快速实现类似功能。
|
In some business scenarios, it is often needed to toggle the associated object. For example, user adds a product into collection, and the user cancels the collection and collect it again. Using the `toggle` method can quickly implement similar functions.
|
||||||
|
|
||||||
**签名**
|
**Signature**
|
||||||
|
|
||||||
* `async toggle(options: TargetKey | { tk?: TargetKey; transaction?: Transaction }): Promise<void>`
|
* `async toggle(options: TargetKey | { tk?: TargetKey; transaction?: Transaction }): Promise<void>`
|
||||||
|
|
||||||
**详细信息**
|
**Detailed Information**
|
||||||
|
|
||||||
`toggle` 方法会自动判断关联对象是否已经存在,如果存在则移除,如果不存在则添加。
|
The `toggle` method automatically checks whether the associated object already exists, and removes it if it does, or adds it if it does not.
|
||||||
|
Loading…
Reference in New Issue
Block a user