use-stateful-adapter

useStatefulAdapter is the hook over createEntityAdapter method provided by @redux/toolkit that helps to maintain CRUD operation of the state.

useStatefulAdapter provides an API to manipulate the state without worrying about handling all the states.

Reduces boilerplate for creating reducers that manage state. Provides performant CRUD operations for managing stateful entity collections.

usage

const [state, handler, { selectById }] = useStatefulAdapter<{
  id: string;
  text: string;
}>({
  name: 'my-adapter',
  selectId: (item) => item.id,
});

Installation

npm i use-stateful-adapter

or

yarn add use-stateful-adapter

The initialisation

import * as React from 'react';
import useStatefulAdapter from 'use-stateful-adapter';

export default function App() {
  const [state, handler, { selectById }] = useStatefulAdapter<{
    id: string;
    text: string;
  }>({
    name: 'my-adapter',
    selectId: (item) => item.id,
  });
}

useStatefulAdapter returns [ currentState, handler, selectors ]

handler methods

• addOne: Add one entity to the collection
• addMany: Add multiple entities to the collection
• addAll: Replace current collection with provided collection
• removeOne: Remove one entity from the collection
• removeMany: Remove multiple entities from the collection, by id or by predicate
• removeAll: Clear entity collection
• updateOne: Update one entity in the collection
• updateMany: Update multiple entities in the collection
• upsertOne: Add or Update one entity in the collection
• upsertMany: Add or Update multiple entities in the collection
• map: Update multiple entities in the collection by defining a map function, similar to Array.map

selector methods

• selectById(id:string):void: Select item by ID

example todo application

import * as React from 'react';
import useStatefulAdapter from '../src';

export default function App() {
  const [state, handler, { selectById }] = useStatefulAdapter<{
    id: string;
    text: string;
  }>({
    name: 'my-adapter',
    selectId: (item) => item.id,
  });
  const [currentId, setCurrentId] = React.useState<string | null>(null);

  const [todo, setTodo] = React.useState('');

  const handleSubmit = React.useCallback(
    (e) => {
      e.preventDefault();
      if (currentId) {
        handler.updateOne({
          id: currentId,
          changes: {
            text: todo,
          },
        });
        setCurrentId(null);
      } else {
        handler.addOne({
          id: String(Math.random()),
          text: todo,
        });
      }
      setTodo('');
    },
    [handler, todo]
  );

  const currentValue = React.useMemo(() => {
    return selectById(currentId!);
  }, [currentId]);

  React.useEffect(() => {
    if (!currentValue) return;
    setTodo(currentValue.text);
  }, [currentValue]);

  return (
    <form onSubmit={handleSubmit} className="App">
      <input
        key={currentId}
        name="todo"
        value={todo}
        onChange={(e) => setTodo(e.currentTarget.value)}
        placeholder="Add Todo"
        type="text"
      />
      <button type="button" onClick={handler.removeAll}>
        Remove All
      </button>
      {currentId && <div>Currently editing {currentId}</div>}
      {state.map((item) => (
        <React.Fragment key={item.id}>
          <li>{item.text}</li>
          <button type="button" onClick={() => handler.removeOne(item.id)}>
            Delete
          </button>
          <button type="button" onClick={() => setCurrentId(item.id)}>
            Edit
          </button>
        </React.Fragment>
      ))}
    </form>
  );
}

with ❤️ from Asim