如果选中在智能组件,在容器底部/ App.js你会看到:
// This is where the filtering happens
function selectTodos(todos, filter) {
switch (filter) {
case VisibilityFilters.SHOW_ALL:
return todos
case VisibilityFilters.SHOW_COMPLETED:
return todos.filter(todo => todo.completed)
case VisibilityFilters.SHOW_ACTIVE:
return todos.filter(todo => !todo.completed)
}
}
// Which props do we want to inject, given the global state?
// Note: use https://github.com/faassen/reselect for better performance.
function select(state) {
return {
visibleTodos: selectTodos(state.todos, state.visibilityFilter),
visibilityFilter: state.visibilityFilter
}
}
// Wrap the component to inject dispatch and state into it
export default connect(select)(App)
滤波发生在你连接到将组件发送给商店。 除了在状态中存储过滤列表之外,您还可以指定对于此特定组件,您应该过滤从存储中获得的待办事项,然后再将它们作为道具传递给组件。