Create 'Foolish' Container

We Redux Users often create smart containers, containers connected to Redux or Flux for reactive interactions, which means changing one elments changes other elements as well. However, in developing view components, putting too many variables into Redux is not a good idea in development.

Let us say the containers connected with Redux as the smart containers, and we need to create some 'foolish' containers that provide reactive actions without Redux. Therefore, we could keep the Redux state neat and clean.

This package provides a createContainer() method with a similar interface of Redux's connect, but it is not connected to Redux.

Usage

createContainer(defaultState, handlers)

createContainer creates a Container Component in two steps:

let newContainer = createContainer(defaultState, handlers)(template = (props, state, handlers) => JSX)

In the first step, createContainer(defaultState, handlers) defines the container's intial state (defaultState) and state change methods (handlers). In the second step, we map the container's props, state and state change method handlers to a JSX template.

Arguments of createContainer

defaultState : Object The initialization of the React State;

handlers : { method_name: (...args) => stateChange} The stateChange here could be any argument accepted by React's this.setState(stateChange), so (...args) => StateChange, as values of handlers, could be

1. (*...args) => newState
2. (...args) => (prevState, Props) => (newState)
3. (event, ...args) => {e.persist(); return (prevState, Props)=> (newState); }

Arguments of createContainer(defaultState, handlers)

template = (props, state, handlers) => JSX The template to map props, state and state change methods handlers to a React DOM. props is the props accepted by the container; state is the this.state of the container. handler are state change methods

More details can be seen in the following Example Code.

ecurry

ecurry((e, prevState, Props) => {newState})

ecurry is a curry function to transit SyntheticEvent from child component to parent compoents with event.persist(), which works as ecurry(f)(e) === (...args) => {e.persist(); f(e,...args)}

Example Code

These example code snippets could be seen in demo/. You could run npm run demo to see the result of following code.

Counter

This example shows creating a simple Counter Component with createContainer

import createContainer from 'create-foolish-container';
import React from 'react';

let CounterTemplate = (props, state, handlers) => <div>
  <h2>{state.counter}</h2>
  <button onClick={handlers.sub}>-</button>
  <button onClick={handlers.add}>+</button>
</div>;

let CounterContainer = createContainer({ counter: 0.5, },
  { add: () => (prevState) => ({ counter: prevState.counter + 1, }),
    sub: () => (prevState) => ({ counter: prevState.counter - 1, }),
  })(CounterTemplate);

When you eat 3 cookies, you consume 150 calories.

This example shows the usage of eccury, a curry wrapper with e.persist of the React;

import createContainer, { ecurry } from 'create-foolish-container';
import React from 'react';

let InputContainer = createContainer({ cookies: 3, },
  { change: ecurry((e, prevState) => ({ cookies: parseInt(e.target.value), })),
  }
)((props, state, handlers) => <p>
  When you eat 
  <input type="number" onChange={handlers.change} value={state.cookies} /> cookies,
  you consume {state.cookies * 50} calories.
</p>
);

When the <input /> 3 cookies are changed, the amount of consumed calories is also changed.