Rendering todo items

It's the job of the TodoList component to render items todo list. When AddTodoMutation takes place, the TodoList component needs to be able to render this new item. Relay takes care of updating the internal data stores where all of our GraphQL data lives. Here's a look at the item list again, with several more todos added:

Here's the TodoList component itself:

import React, { PropTypes } from 'react'; 
import Relay from 'react-relay'; 
import { View } from 'react-native'; 
 
import Todo from './Todo'; 
 
// The list component itself is quite simple. Note the 
// property that we're using to iterate over - there's 
// "edges" and "nodes". This is reflective of a GraphQL 
// collection. 
const TodoList = ({ viewer }) => ( 
  <View> 
    {viewer.todos.edges.map(edge => ( 
      <Todo 
        key={edge.node.id} 
        todo={edge.node} 
        viewer={viewer} 
      /...