@invisible/samx
v3.1.0
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Invisible's Frontend Stack using Mobx, React and SAM Pattern
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SAMx
SAMx is a SAM pattern implementation for MobX and React.
How?
import * as React from 'react'
import { render } from 'react-dom'
import { Model, State, Propose, View } from '../../src'
// Design the model for your Application
Model('app', { schema: {
todos: [
{ id: 0, description: 'Write example', done: true },
],
} })
// Create necessary State evaluator
const appStateEvaluator = models => () => ({
pending: models.app.todos.filter(t => ! t.done),
done: models.app.todos.filter(t => t.done),
size: models.app.todos.length,
})
const state = State(appStateEvaluator)
// Create proposals and actions
const proposeTodoUpdate = (id, props) => ({
name: 'update',
// You can use the Key property to cause deep mutations without triggering undesired renders
key: `todos[${id}]`,
value: props,
})
const proposeNewTodo = description => ({ todos }) => ({
name: 'append',
value: { todos: [...todos, { description, done: false, id: todos.length }] },
})
const createTodo = e => {
if (e.key === 'Enter') Propose('app')(proposeNewTodo(e.target.value))
}
const updateDescription = id => e =>
Propose('app')(proposeTodoUpdate(id, { description: e.target.value }))
// Create the View
const ListItem = View(({ todo: { description, done, id } }) =>
<li>
<input type='checkbox' value={done} checked={done} onChange={updateStatus(id)}/>
<input type='text' value={description} onChange={updateDescription(id)}/>
</li>)
const TodoList = View(() => (
<div>
Hi, we have {state.size} total todos.
Pending:
<ul>
{
state.pending.map((t, i) => <ListItem key={i} todo={t}/>)
}
</ul>
Done:
<ul>
{
state.done.map((t, i) => <ListItem key={i} todo={t}/>)
}
</ul>
<p>
Add new: <input type='text' onKeyPress={createTodo}/>
</p>
</div>
))
// Render
const root = document.getElementById('root')
render(<TodoList />, root)