如何使用@ngrx/data 自定义我的减速器? [英] How can I customize my reducers using @ngrx/data?

问题描述

我正在学习使用@ngrx/data，确实，使用该库，我改进了很多代码，但在对其进行个性化时遇到了问题.我已经看到如何向集合添加字段

I am learning to use @ngrx/data, it is true that with that library I advance a lot of code, but I am having problems when it comes to personalizing it. I already saw how to add fields to collections

export const entityMetadata: EntityMetadataMap = {用户:{附加集合状态:{测试:空}}};

并在此处设置模块:

export class UsersModule {
  constructor(private eds: EntityDefinitionService) {
    eds.registerMetadataMap(entityMetadata);
  }
}

一切都很好，但是...，我如何添加自己的减速器，在文档中我看的不是很清楚

All good up there, but ..., How can I add my own reducers, in the documentation I don't see it very clearly

推荐答案

只需按照他们的文档如何添加自定义减速器:https://ngrx.io/guide/data/entity-reducer#customizing-entity-reducer-behavior

simply follow their docs how to add custom reducers: https://ngrx.io/guide/data/entity-reducer#customizing-entity-reducer-behavior

您可以为实体类型创建自定义缩减器，并直接使用 EntityCollectionReducerRegistry.registerReducer() 注册它.

You can create a custom reducer for an entity type and register it directly with EntityCollectionReducerRegistry.registerReducer().

您可以通过调用EntityCollectionReducerRegistry.registerReducers(reducerMap)同时注册多个自定义reducer，其中reducerMap是reducer的散列，以entity-type-name为键.

You can register several custom reducers at the same time by calling EntityCollectionReducerRegistry.registerReducers(reducerMap) where the reducerMap is a hash of reducers, keyed by entity-type-name.

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