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February 6, 2018 21:40
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'CS47SI: 01. Initial State': | |
'prefix': 'std_initial_state' | |
'body': """ | |
const initialStoreState = { | |
todos: [ | |
{ id: 1, title: 'Build TODO app in under 1 hour', done: false }, | |
{ id: 2, title: 'Prepare slides', done: false }, | |
{ id: 3, title: 'Eat some cake', done: true }, | |
], | |
}; | |
""" | |
'CS47SI: 02. Create store and Provider': | |
'prefix': 'std_create_store' | |
'body': """ | |
import { createStore } from 'redux'; | |
import { Provider } from 'react-redux'; | |
import { reducer } from './App/Store/Reducer'; | |
const store = createStore(reducer, initialStoreState); | |
export default class App extends React.Component { | |
render() { | |
return ( | |
<Provider store={store}> | |
<TodoScreen /> | |
</Provider> | |
); | |
} | |
} | |
""" | |
'CS47SI: 03.1. Map TODOs state to props': | |
'prefix': 'std_connect' | |
'body': """ | |
import { connect } from 'react-redux'; | |
@connect() | |
""" | |
'CS47SI: 03.2. Map TODOs state to props': | |
'prefix': 'std_map_state' | |
'body': """ | |
function mapStateToProps(storeState) { | |
return { | |
todos: storeState.todos, | |
}; | |
} | |
""" | |
'CS47SI: 03.3. Map TODOs state to summary props': | |
'prefix': 'std_map_state_count' | |
'body': """ | |
function mapStateToProps(storeState) { | |
return { | |
completedCount: storeState.todos.filter(todo => todo.done).length, | |
}; | |
} | |
""" | |
'CS47SI: 04. Map toggle dispatch to props': | |
'prefix': 'std_map_toggle_dispatch' | |
'body': """ | |
function mapDispatchToProps(dispatch, props) { | |
return { | |
onToggle: () => dispatch({type: 'TOGGLE_TODO'}), | |
}; | |
} | |
""" | |
'CS47SI: 05. Toggle TODO reducer': | |
'prefix': 'std_toggle' | |
'body': """ | |
if (action.type === 'TOGGLE_TODO') { | |
const updatedTodos = state.todos.map( | |
todo => todo.id === action.id | |
? {...todo, done: !todo.done} | |
: todo | |
); | |
return { | |
todos: updatedTodos, | |
}; | |
} | |
""" | |
'CS47SI: 05.ALT. Toggle TODO reducer': | |
'prefix': 'std_toggle_alt' | |
'body': """ | |
if (action.type === 'TOGGLE_TODO') { | |
const updatedTodos = []; | |
for (let todo of state.todos) { | |
if (todo.id === action.id) { | |
updatedTodos.push({ | |
id: todo.id, | |
title: todo.title, | |
done: !todo.done, | |
}); | |
} else { | |
updatedTodos.push(todo); | |
} | |
} | |
return { | |
todos: updatedTodos, | |
}; | |
} | |
""" | |
'CS47SI: 06. Map add dispatch to props': | |
'prefix': 'std_map_add_dispatch' | |
'body': """ | |
function mapDispatchToProps(dispatch, props) { | |
return { | |
onAdd: (title) => dispatch(addTodo(title)), | |
}; | |
} | |
""" | |
'CS47SI: 07. Add TODO reducer': | |
'prefix': 'std_add' | |
'body': """ | |
if (action.type === ADD_TODO) { | |
return { | |
todos: [ | |
{ id: action.id, title: action.title, done: false }, | |
...state.todos, | |
], | |
} | |
} | |
""" | |
'CS47SI: 08. Save and load state': | |
'prefix': 'std_persist' | |
'body': """ | |
// Primitive version of redux-persist | |
AsyncStorage.getItem('state').then(json => { | |
if (json) { | |
store.dispatch(restoreState(JSON.parse(json))); | |
} | |
store.subscribe(() => { | |
AsyncStorage.setItem('state', JSON.stringify(store.getState())); | |
}) | |
}); | |
""" | |
'CS47SI: 09. Restore State': | |
'prefix': 'std_restore' | |
'body': """ | |
if (action.type === RESTORE_STATE) { | |
return action.state; | |
} | |
""" | |
'CS47SI: 10. DevTools': | |
'prefix': 'std_devtools' | |
'body': """ | |
import devtools from 'remote-redux-devtools'; | |
const store = createStore(reducer, initialStoreState, devtools({port: 8000})); | |
""" |
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