ngrx心得体会总结

ngrx心得体会总结

一个典型的场景：添加店铺商品，其中店铺有多个，每个店铺有不同的商品分类，商品分类可以多级！

@Injectable()
export class AppEffects {
  // 添加店铺商品
  @Effect()
  StartAddShopGoods$ = this.ofType(ActionTypes.StartAddShopGoods).pipe(
    takeUntil(this.ofType(ActionTypes.Error).pipe(
      tap(res => console.log('发生了点错误'))
    )),
    switchMap(res => {
        // 加载店铺
      this.store.dispatch(new SearchShop());
      this.router.navigate(['/select-shop'], { replaceUrl: false, skipLocationChange: true });
      // 添加选择店铺
      return this.ofType(ActionTypes.SelectShop).pipe(
        switchMap(res => {
          // 加载店铺商品分类
          this.store.dispatch(new SearchShopGoodsCategory());
          this.router.navigate(['/select-shop-goods-category'], { replaceUrl: false, skipLocationChange: true });
          // 选择店铺商品分类
          return this.ofType(ActionTypes.SelectShopGoodsCateogry).pipe(
            tap(res => {
              // 商品信息
              this.router.navigate(['/shop-goods-edit'], { replaceUrl: false, skipLocationChange: true });
            }),
            switchMap(res => {
              // 点击提交按钮
              return this.ofType(ActionTypes.AddShopGoods).pipe(
                switchMap(res => this.util.wpost('iwe7ShopGoods', 'Upsert', {}).pipe(
                  map(res => {
                    // 添加成功
                    this.router.navigate(['/user-center'], { replaceUrl: false, skipLocationChange: true });
                    return new AddSuccessShopGoods();
                  })
                ))
              );
            })
          );
        })
      );
    })
  );

  // 公共加载
  @Effect()
  SearchShop$ = this.ofType(ActionTypes.SearchShop).pipe(
    switchMap(res => {
      return this.util.wpost('iwe7Shop', 'Loads', {}).pipe(
        pluck('data'),
        pluck('list')
      );
    }),
    map(res => {
      return new SearchSuccessShop(res);
    })
  );

  @Effect()
  SearchShopGoodsCategory$ = this.ofType(ActionTypes.SearchShopGoodsCategory).pipe(
    switchMap(res => {
      return this.util.wpost('iwe7ShopGoodsCategory', 'Loads', {}).pipe(
        pluck('data'),
        pluck('list')
      );
    }),
    map(res => {
      return new SearchSuccessShopGoodsCategory(res);
    })
  );
  constructor(
    private actions$: Actions,
    private store: Store<any>,
    private util: Iwe7Util2Service,
    private router: Router
  ) { }

  ofType<T extends Action>(name: string): Actions<T> {
    return this.actions$.ofType<T>(name);
  }
}

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总结： actions 定义操作 effects 串联actions,完成业务逻辑 reducers 操作Store model 定义结构