SmartNgRX Documentation

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Using @smarttools/smart-ngrx
Intro Effects Service Injection Token Entity Definitions Global Registration Entity Registration ChildDefinition Smart Selector
Mark and Delete
Introduction MarkAndDeleteInit Global Mark and Delete Entity Mark and Delete
Child Fields
CRUD Support
Retrieving Rows Virtual IDs Updates Create (Add) a Row Delete a Row
Using With Existing Selectors WebSockets Error Handling
Using @smarttools/smart-signals
Intro Effects Service Injection Token Entity Definitions Global Registration Entity Registration ChildDefinition Smart Signals
Mark and Delete
Introduction MarkAndDeleteInit Global Mark and Delete Entity Mark and Delete
Child Fields
CRUD Support
Retrieving Rows Virtual IDs Updates Create (Add) a Row Delete a Row
Using With Existing Signals WebSockets Error Handling
NgRX Demo Walkthrough
Introduction Database Structure Retrieving Data Setup Client Side Effects Services Selectors Tree Component Updating Fields Adding Rows Deleting Rows Processing WebSocket Messages
Signals Demo Walkthrough
Introduction Database Structure Retrieving Data Setup Client Side Effects Services Smart Signals (Selectors) Tree Component Updating Fields Adding Rows Deleting Rows Processing WebSocket Messages
API
Smart NgRX API Smart Signals API Internal API API Changes
Smart Signals API / Function

getTopChildRows

Generic types:P C

This function returns the rows of the child that a top level createSmartSignal loads on your behalf.

Presentation

function getTopChildRows(
  parentSignal: Signal<EntityState<P>>,
  childFieldName: keyof P,
): Signal<C[]>;

Returns

Signal<C[]> -

A signal that emits the rows of the child.

Parameters

NameTypeDescription
parentSignal
Signal<EntityState<P>>

The signal that createSmartSignal loads on your behalf.

childFieldName
keyof P

The field name of the child that you want to get the rows of.