{"id":47726,"date":"2023-07-10T08:02:04","date_gmt":"2023-05-24T04:28:46","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e8%ae%a9%e6%88%91%e4%bb%ac%e4%bd%bf%e7%94%a8aws-appsync%e5%92%8creact%e6%9d%a5%e5%88%9b%e5%bb%ba%e4%b8%80%e4%b8%aatodo%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f3%e5%88%9b%e5%bb%bareact%e5%ba%94%e7%94%a8\/"},"modified":"2024-04-30T12:50:35","modified_gmt":"2024-04-30T04:50:35","slug":"%e8%ae%a9%e6%88%91%e4%bb%ac%e4%bd%bf%e7%94%a8aws-appsync%e5%92%8creact%e6%9d%a5%e5%88%9b%e5%bb%ba%e4%b8%80%e4%b8%aatodo%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f3%e5%88%9b%e5%bb%bareact%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e8%ae%a9%e6%88%91%e4%bb%ac%e4%bd%bf%e7%94%a8aws-appsync%e5%92%8creact%e6%9d%a5%e5%88%9b%e5%bb%ba%e4%b8%80%e4%b8%aatodo%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f3%e5%88%9b%e5%bb%bareact%e5%ba%94%e7%94%a8\/","title":{"rendered":"\u8ba9\u6211\u4eec\u4f7f\u7528AWS AppSync\u548cReact\u6765\u521b\u5efa\u4e00\u4e2aToDo\u5e94\u7528\u7a0b\u5e8f(3)\u521b\u5efaReact\u5e94\u7528\u7a0b\u5e8f"},"content":{"rendered":"

\u9996\u5148<\/h2>\n

\u901a\u8fc7\u524d\u51e0\u7bc7\u6587\u7ae0\uff0c\u6211\u4eec\u4f7f\u7528\u4e86AWS AppSync\u521b\u5efa\u4e86\u4e00\u4e2aGraphQL API\u3002
\n\u8fd9\u6b21\uff0c\u6211\u4eec\u6253\u7b97\u4f7f\u7528\u8fde\u63a5\u5230GraphQL API\u7684\u5ba2\u6237\u7aefReact\u6765\u5b8c\u6210\u3002
\nAWS AppSync\u63d0\u4f9b\u4e86\u4e0eReact\u76f8\u5173\u7684GraphQL\u5ba2\u6237\u7aefApollo\u7684\u652f\u6301\uff0caws-appsync-react\uff08\u7ed1\u5b9a\u5e93\uff09\u5df2\u7ecf\u51c6\u5907\u597d\u4e86\uff0c\u6240\u4ee5\u8fd9\u6b21\u6211\u4eec\u5c06\u4f7f\u7528\u5b83\u6765\u5173\u8054AWS AppSync\u7684\u6570\u636e\u548c\u7ec4\u4ef6\u3002<\/p>\n

\u9879\u76ee\u7684\u8bbe\u7f6e<\/h2>\n

\u521b\u5efa\u539f\u578b<\/h3>\n

\u4f7f\u7528Create React App\u5de5\u5177\u521b\u5efa\u9879\u76ee\u7684\u96cf\u5f62\u3002
\n\uff08\u672c\u6b21\u4f7f\u7528\u7684Node\u7248\u672c\u662f9.2.0\u3002\uff09<\/p>\n

$ mkdir aws-appsync-todo-app\r\n$ npx create-react-app .\r\n<\/code><\/pre>\n
\u5b89\u88c5\u6240\u9700\u7684\u9644\u52a0\u8f6f\u4ef6\u5305\u3002<\/p>\n
$ yarn add graphql-tag react-apollo aws-appsync aws-appsync-react uuid\r\n<\/code><\/pre>\n
    \n
  • \n
      graphql-tag<\/ul>\n<\/li>\n<\/ul>\n
      GraphQL\u306e\u30b9\u30ad\u30fc\u30de\u3092JavaScript\u306e\u30b3\u30fc\u30c9\u5185\u306b\u5b9a\u7fa9\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528<\/p>\n
      react-apollo<\/p>\n
      GraphQL\u30af\u30e9\u30a4\u30a2\u30f3\u30c8<\/p>\n
      aws-*\u306e\u30d1\u30c3\u30b1\u30fc\u30b8<\/p>\n
      AWS AppSync\u3068Apollo\u3092\u9023\u643a\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528<\/p>\n
      uuid<\/p>\n
      Todo\u500b\u3005\u306e\u30a2\u30a4\u30c6\u30e0\u306b\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u3067\u30e6\u30cb\u30fc\u30af\u306aID\u3092\u3064\u3051\u308b\u305f\u3081\u306b\u4f7f\u7528<\/p>\n
      \u83b7\u53d6\u548c\u5bfc\u5165\u8bbe\u7f6e\u6587\u4ef6<\/h3>\n
      \u4ece\u63a7\u5236\u53f0\u754c\u9762\u6253\u5f00\u201cAWS AppSync > \u521b\u5efa\u7684\u9879\u76ee > \u9996\u9875\u201d\uff0c\u7136\u540e\u4e0b\u8f7dAppSync.js\u6587\u4ef6\uff0c\u65b9\u6cd5\u662f\u5728\u201c\u5165\u95e8\u6307\u5357\u201d\u7684\u6700\u4e0b\u65b9\u70b9\u51fb\u201c\u4e0b\u8f7d AWS AppSync.js \u914d\u7f6e\u6587\u4ef6\u201d\u3002<\/p>\n
      \"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n
      \u5c06\u4e0b\u8f7d\u7684\u6587\u4ef6\u653e\u7f6e\u5728\u521b\u5efa\u7684\u9879\u76ee\u7684src\u6587\u4ef6\u5939\u4e0b\uff0c\u4e0e\u5176\u4ed6\u5305\u4e00\u8d77\u5bfc\u5165\u5230App.js\u4e2d\u3002<\/p>\n
      import<\/span> {<\/span> ApolloProvider<\/span> }<\/span> from<\/span> '<\/span>react-apollo<\/span>'<\/span>;<\/span>\r\nimport<\/span> AWSAppSyncClient<\/span> from<\/span> \"<\/span>aws-appsync<\/span>\"<\/span>;<\/span>\r\nimport<\/span> {<\/span> Rehydrated<\/span> }<\/span> from<\/span> \"<\/span>aws-appsync-react<\/span>\"<\/span>;<\/span>\r\nimport<\/span> appSyncConfig<\/span> from<\/span> \"<\/span>.\/AppSync<\/span>\"<\/span>;<\/span>\r\n<\/code><\/pre>\n
      \u521d\u59cb\u5316AppSyncClient<\/h3>\n
      \u4f7f\u7528\u4ece\u914d\u7f6e\u6587\u4ef6\u4e2d\u8bfb\u53d6\u7684AWS\u8ba4\u8bc1\u4fe1\u606f\u548cAPI\u4fe1\u606f\u4f5c\u4e3a\u53c2\u6570\u6765\u521d\u59cb\u5316AWS AppSyncClient\u3002
      \n\u53ef\u4ee5\u901a\u8fc7auth\u53c2\u6570\u9009\u62e9\u8ba4\u8bc1\u65b9\u5f0f\uff0c\u4f46\u672c\u6b21\u4f7f\u7528API\u5bc6\u94a5\u8fdb\u884c\u8ba4\u8bc1\u3002<\/p>\n
      \/\/ AWS AppSync Client<\/span>\r\nconst<\/span> client<\/span> =<\/span> new<\/span> AWSAppSyncClient<\/span>({<\/span>\r\n  url<\/span>:<\/span> appSyncConfig<\/span>.<\/span>graphqlEndpoint<\/span>,<\/span>\r\n  region<\/span>:<\/span> appSyncConfig<\/span>.<\/span>region<\/span>,<\/span>\r\n  auth<\/span>:<\/span> {<\/span>\r\n    type<\/span>:<\/span> appSyncConfig<\/span>.<\/span>authenticationType<\/span>,<\/span>\r\n    apiKey<\/span>:<\/span> appSyncConfig<\/span>.<\/span>apiKey<\/span>,<\/span>\r\n  }<\/span>\r\n});<\/span>\r\n<\/code><\/pre>\n
      \u5c06\u4e0eAppSync\u6570\u636e\u8fdb\u884c\u96c6\u6210\u7684\u7ec4\u4ef6\u5305\u62ecApolloProvider\u548cRehydrated\uff0c\u5728ApolloProvider\u4e2d\u4f20\u9012AppSyncClient\u3002<\/p>\n
      class<\/span> App<\/span> extends<\/span> Component<\/span> {<\/span>\r\n  render<\/span>()<\/span> {<\/span>\r\n    return<\/span> (<\/span>\r\n      <<\/span>ApolloProvider<\/span> client<\/span>=<\/span>{<\/span>client<\/span>}<\/span>><\/span>\r\n        <<\/span>Rehydrated<\/span>><\/span>\r\n          <<\/span>div<\/span> className<\/span>=<\/span>\"<\/span>App<\/span>\"<\/span>><\/span>\r\n            <<\/span>header<\/span> className<\/span>=<\/span>\"<\/span>App-header<\/span>\"<\/span>><\/span>\r\n              <<\/span>h1<\/span> className<\/span>=<\/span>\"<\/span>App-title<\/span>\"<\/span>><\/span>AWS<\/span> AppSync<\/span> Todo<\/span><<\/span>\/h1<\/span>>\r\n<\/span>            <<\/span>\/header<\/span>>\r\n<\/span>            <<\/span>TodoListWithData<\/span> \/><\/span>\r\n          <<\/span>\/div<\/span>>\r\n<\/span>        <<\/span>\/Rehydrated<\/span>>\r\n<\/span>      <<\/span>\/ApolloProvider<\/span>>\r\n<\/span>    );<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
      \u521b\u5efaGraphQL\u67e5\u8be2<\/h2>\n
      \u4f7f\u7528graphql-tag\u7684gql\u65b9\u6cd5\u6765\u5b9a\u4e49\u67e5\u8be2\u3002\u8fd9\u6b21\u6211\u4eec\u5c06\u5176\u521b\u5efa\u5728src\/GraphQL\u76ee\u5f55\u4e0b\u3002<\/p>\n
      \u67e5\u8be2\u6240\u6709\u5b8c\u6210\u7684\u4e8b\u9879<\/h3>\n
      import<\/span> gql<\/span> from<\/span> \"<\/span>graphql-tag<\/span>\"<\/span>;<\/span>\r\n\r\nexport<\/span> default<\/span> gql<\/span>(<\/span>`\r\nquery {\r\n  getTodos {\r\n    id\r\n    title\r\n    description\r\n    completed\r\n  }\r\n}`<\/span>);<\/span>\r\n<\/code><\/pre>\n
      \u521b\u5efa\u4e00\u4e2a\u540d\u4e3aTodo\u7684\u53d8\u5f02<\/h3>\n
      import<\/span> gql<\/span> from<\/span> \"<\/span>graphql-tag<\/span>\"<\/span>;<\/span>\r\n\r\nexport<\/span> default<\/span> gql<\/span>(<\/span>`\r\nmutation addTodo($id: ID!, $title: String, $description: String, $completed: Boolean) {\r\n  addTodo(\r\n    id: $id\r\n    title: $title\r\n    description: $description\r\n    completed: $completed\r\n  ) {\r\n    id\r\n    title\r\n    description\r\n    completed\r\n  }\r\n}`<\/span>);<\/span>\r\n<\/code><\/pre>\n
      Todo\u66f4\u65b0\u7684Mutation<\/h3>\n
      import<\/span> gql<\/span> from<\/span> \"<\/span>graphql-tag<\/span>\"<\/span>;<\/span>\r\n\r\nexport<\/span> default<\/span> gql<\/span>(<\/span>`\r\nmutation updateTodo($id: ID!, $title: String, $description: String, $completed: Boolean) {\r\n  updateTodo(\r\n    id: $id\r\n    title: $title\r\n    description: $description\r\n    completed: $completed\r\n  ) {\r\n    id\r\n    title\r\n    description\r\n    completed\r\n  }\r\n}`<\/span>);<\/span>\r\n<\/code><\/pre>\n
      \u5220\u9664Todo\u7684\u53d8\u5f02<\/h3>\n
      import<\/span> gql<\/span> from<\/span> \"<\/span>graphql-tag<\/span>\"<\/span>;<\/span>\r\n\r\nexport<\/span> default<\/span> gql<\/span>(<\/span>`\r\nmutation deleteTodo($id: ID!) {\r\n  deleteTodo(id: $id) {\r\n    id\r\n    title\r\n    description\r\n    completed\r\n  }\r\n}`<\/span>);<\/span>\r\n<\/code><\/pre>\n
      \u5b9e\u73b0ToDoList\u7ec4\u4ef6<\/h2>\n
      \u8fd9\u6b21\uff0c\u5c06Todo\u5217\u8868\u7684\u5168\u90e8\u529f\u80fd\u7b80\u7565\u5730\u6574\u5408\u5230\u4e00\u4e2a\u7ec4\u4ef6\u4e2d\u3002
      \n\u5728src\/Components\u6587\u4ef6\u5939\u4e0b\uff0c\u65b0\u5efa\u4e86\u4e00\u4e2aTodoList.js\u6587\u4ef6\u3002<\/p>\n
      AWS AppSync\u548cComponent\u4e4b\u95f4\u7684\u534f\u4f5c<\/h3>\n
      \u4e3a\u4e86\u5728React\u7ec4\u4ef6\u4e2d\u4e0eAWS AppSync\u7684GraphQL API\u8fdb\u884c\u534f\u4f5c\uff0c\u6211\u4eec\u5c06\u4f7f\u7528react-apollo\u3002<\/p>\n
      \u5f53\u5c06\u7ec4\u4ef6\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9React-Apollo\u4e2d\u7684graphql\u65b9\u6cd5\u65f6\uff0c\u53ef\u4ee5\u63a5\u6536\u5230\u4e00\u4e2a\u7ec4\u4ef6\uff0c\u8be5\u7ec4\u4ef6\u53ef\u4ee5\u901a\u8fc7props\u4eceGraphQL API\u83b7\u53d6\u5230\u7684\u6570\u636e\u3002<\/p>\n
      const<\/span> TodoListWithData<\/span> =<\/span> graphql<\/span>(<\/span>QueryGetTodos<\/span>)(<\/span>TodoList<\/span>);<\/span>\r\n<\/code><\/pre>\n
      \u6b64\u5916\uff0c\u5f53\u9700\u8981\u5c06\u591a\u4e2a\u67e5\u8be2\u3001\u53d8\u52a8\u548c\u7ec4\u4ef6\u8fdb\u884c\u534f\u4f5c\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528react-apollo\u7684compose\u65b9\u6cd5\u3002\u5b9e\u9645\u4e0a\uff0c\u8fd9\u53ea\u662f\u4e00\u4e2a\u60f3\u8c61\uff0c\u56e0\u4e3a\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u53ef\u80fd\u9700\u8981\u4e3a\u6bcf\u4e2a\u67e5\u8be2\u3001\u53d8\u52a8\u548c\u7ec4\u4ef6\u6307\u5b9a\u4e00\u4e9b\u9009\u9879\u7b49\u3002<\/p>\n
      const<\/span> TodoListWithData<\/span> =<\/span> compose<\/span>(<\/span>\r\n  graphql<\/span>(<\/span>QueryGetTodos<\/span>),<\/span>\r\n  graphql<\/span>(<\/span>MutationAddTodo<\/span>),<\/span>\r\n  graphql<\/span>(<\/span>MutationUpdateTodo<\/span>),<\/span>\r\n  graphql<\/span>(<\/span>MutationDeleteTodo<\/span>),<\/span>\r\n)(<\/span>TodoList<\/span>);<\/span>\r\n<\/code><\/pre>\n
      \u5b9e\u9645\u4e0a\uff0c\u5c06\u6bcf\u4e2a\u67e5\u8be2\uff08Query\uff09\u548c\u53d8\u66f4\uff08Mutation\uff09\u5173\u8054\u8d77\u6765\u7684\u90e8\u5206\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
      export<\/span> default<\/span> compose<\/span>(<\/span>\r\n  \/\/ \u5168\u4ef6\u53d6\u5f97Query<\/span>\r\n  graphql<\/span>(<\/span>QueryGetTodos<\/span>,<\/span> {<\/span>  \/\/ \u3042\u3089\u304b\u3058\u3081\u5b9a\u7fa9\u3057\u305fGraphQL\u30af\u30a8\u30ea\u3092\u4f7f\u7528<\/span>\r\n    options<\/span>:<\/span> {<\/span>\r\n      fetchPolicy<\/span>:<\/span> '<\/span>cache-and-network<\/span>'<\/span>\r\n    },<\/span>\r\n    props<\/span>:<\/span> (<\/span>props<\/span>)<\/span> =><\/span> ({<\/span>\r\n      todos<\/span>:<\/span> props<\/span>.<\/span>data<\/span>.<\/span>getTodos<\/span>\r\n    })<\/span>\r\n  }),<\/span>\r\n  \/\/ \u8ffd\u52a0Mutation<\/span>\r\n  graphql<\/span>(<\/span>AddTodoMutation<\/span>,<\/span> {<\/span>  \/\/ \u3042\u3089\u304b\u3058\u3081\u5b9a\u7fa9\u3057\u305fGraphQL\u30af\u30a8\u30ea\u3092\u4f7f\u7528<\/span>\r\n    props<\/span>:<\/span> (<\/span>props<\/span>)<\/span> =><\/span> ({<\/span>\r\n      onAdd<\/span>:<\/span> (<\/span>todo<\/span>)<\/span> =><\/span> {<\/span>\r\n        props<\/span>.<\/span>mutate<\/span>({<\/span>\r\n          variables<\/span>:<\/span> {<\/span> ...<\/span>todo<\/span> },<\/span>\r\n          \/\/ API\u304b\u3089\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u304c\u8fd4\u3063\u3066\u304f\u308b\u307e\u3048\u306bprops\u306b\u53cd\u6620\u3059\u308b\u5024\u3092\u8a2d\u5b9a<\/span>\r\n          optimisticResponse<\/span>:<\/span> ()<\/span> =><\/span> ({<\/span> addTodo<\/span>:<\/span> {<\/span> ...<\/span>todo<\/span>,<\/span> __typename<\/span>:<\/span> '<\/span>Todo<\/span>'<\/span> }<\/span> })<\/span>\r\n        })<\/span>\r\n      }<\/span>\r\n    }),<\/span>\r\n    options<\/span>:<\/span> {<\/span>\r\n      \/\/ \u8ffd\u52a0\u306e\u5f8c\u306b\u5168\u4ef6\u30ea\u30b9\u30c8\u3092\u66f4\u65b0\u3059\u308b\u30a2\u30af\u30b7\u30e7\u30f3<\/span>\r\n      refetchQueries<\/span>:<\/span> [{<\/span> query<\/span>:<\/span> QueryGetTodos<\/span> }],<\/span>\r\n      update<\/span>:<\/span> (<\/span>proxy<\/span>,<\/span> {<\/span> data<\/span>:<\/span> {<\/span> addTodo<\/span> }<\/span> })<\/span> =><\/span> {<\/span>\r\n        const<\/span> query<\/span> =<\/span> QueryGetTodos<\/span>;<\/span>\r\n        const<\/span> data<\/span> =<\/span> proxy<\/span>.<\/span>readQuery<\/span>({<\/span> query<\/span> });<\/span>\r\n\r\n        data<\/span>.<\/span>getTodos<\/span>.<\/span>push<\/span>(<\/span>addTodo<\/span>);<\/span>\r\n\r\n        proxy<\/span>.<\/span>writeQuery<\/span>({<\/span> query<\/span>,<\/span> data<\/span> });<\/span>\r\n      }<\/span>\r\n    }<\/span>\r\n  }),<\/span>\r\n  \/\/ \u72b6\u614b\u66f4\u65b0(\u30c1\u30a7\u30c3\u30af)Mutation<\/span>\r\n  graphql<\/span>(<\/span>UpdateTodoMutation<\/span>,<\/span> {<\/span>  \/\/ \u3042\u3089\u304b\u3058\u3081\u5b9a\u7fa9\u3057\u305fGraphQL\u30af\u30a8\u30ea\u3092\u4f7f\u7528<\/span>\r\n    props<\/span>:<\/span> (<\/span>props<\/span>)<\/span> =><\/span> ({<\/span>\r\n      onCheck<\/span>:<\/span> (<\/span>todo<\/span>)<\/span> =><\/span> {<\/span>\r\n        props<\/span>.<\/span>mutate<\/span>({<\/span>\r\n          variables<\/span>:<\/span> {<\/span> id<\/span>:<\/span> todo<\/span>.<\/span>id<\/span>,<\/span> title<\/span>:<\/span> todo<\/span>.<\/span>title<\/span>,<\/span> description<\/span>:<\/span> todo<\/span>.<\/span>description<\/span>,<\/span> completed<\/span>:<\/span> !<\/span>todo<\/span>.<\/span>completed<\/span> },<\/span>\r\n          \/\/ API\u304b\u3089\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u304c\u8fd4\u3063\u3066\u304f\u308b\u307e\u3048\u306bprops\u306b\u53cd\u6620\u3059\u308b\u5024\u3092\u8a2d\u5b9a<\/span>\r\n          optimisticResponse<\/span>:<\/span> ()<\/span> =><\/span> ({<\/span> updateTodo<\/span>:<\/span> {<\/span> id<\/span>:<\/span> todo<\/span>.<\/span>id<\/span>,<\/span> title<\/span>:<\/span> todo<\/span>.<\/span>title<\/span>,<\/span> description<\/span>:<\/span> todo<\/span>.<\/span>description<\/span>,<\/span> completed<\/span>:<\/span> !<\/span>todo<\/span>.<\/span>completed<\/span>,<\/span> __typename<\/span>:<\/span> '<\/span>Todo<\/span>'<\/span> }<\/span> })<\/span>\r\n        })<\/span>\r\n      }<\/span>\r\n    }),<\/span>\r\n    options<\/span>:<\/span> {<\/span>\r\n      \/\/ \u66f4\u65b0\u306e\u5f8c\u306b\u5168\u4ef6\u30ea\u30b9\u30c8\u3092\u66f4\u65b0\u3059\u308b\u30a2\u30af\u30b7\u30e7\u30f3<\/span>\r\n      refetchQueries<\/span>:<\/span> [{<\/span> query<\/span>:<\/span> QueryGetTodos<\/span> }],<\/span>\r\n      update<\/span>:<\/span> (<\/span>proxy<\/span>,<\/span> {<\/span> data<\/span>:<\/span> {<\/span> updateTodo<\/span> }<\/span> })<\/span> =><\/span> {<\/span>\r\n        const<\/span> query<\/span> =<\/span> QueryGetTodos<\/span>;<\/span>\r\n        const<\/span> data<\/span> =<\/span> proxy<\/span>.<\/span>readQuery<\/span>({<\/span> query<\/span> });<\/span>\r\n\r\n        data<\/span>.<\/span>getTodos<\/span> =<\/span> data<\/span>.<\/span>getTodos<\/span>.<\/span>map<\/span>(<\/span>todo<\/span> =><\/span> todo<\/span>.<\/span>id<\/span> !==<\/span> updateTodo<\/span>.<\/span>id<\/span> ?<\/span> todo<\/span> :<\/span> {<\/span> ...<\/span>updateTodo<\/span> });<\/span>\r\n\r\n        proxy<\/span>.<\/span>writeQuery<\/span>({<\/span> query<\/span>,<\/span> data<\/span> });<\/span>\r\n      }<\/span>\r\n    }<\/span>\r\n  }),<\/span>\r\n  \/\/ \u524a\u9664Mutation<\/span>\r\n  graphql<\/span>(<\/span>DeleteTodoMutation<\/span>,<\/span> {<\/span>  \/\/ \u3042\u3089\u304b\u3058\u3081\u5b9a\u7fa9\u3057\u305fGraphQL\u30af\u30a8\u30ea\u3092\u4f7f\u7528<\/span>\r\n    props<\/span>:<\/span> (<\/span>props<\/span>)<\/span> =><\/span> ({<\/span>\r\n      onDelete<\/span>:<\/span> (<\/span>todo<\/span>)<\/span> =><\/span> props<\/span>.<\/span>mutate<\/span>({<\/span>\r\n        variables<\/span>:<\/span> {<\/span> id<\/span>:<\/span> todo<\/span>.<\/span>id<\/span> },<\/span>\r\n        \/\/ API\u304b\u3089\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u304c\u8fd4\u3063\u3066\u304f\u308b\u307e\u3048\u306bprops\u306b\u53cd\u6620\u3059\u308b\u5024\u3092\u8a2d\u5b9a<\/span>\r\n        optimisticResponse<\/span>:<\/span> ()<\/span> =><\/span> ({<\/span> deleteTodo<\/span>:<\/span> {<\/span> ...<\/span>todo<\/span>,<\/span> __typename<\/span>:<\/span> '<\/span>Todo<\/span>'<\/span> }<\/span> }),<\/span>\r\n      })<\/span>\r\n    }),<\/span>\r\n    options<\/span>:<\/span> {<\/span>\r\n      \/\/ \u524a\u9664\u306e\u5f8c\u306b\u5168\u4ef6\u30ea\u30b9\u30c8\u3092\u66f4\u65b0\u3059\u308b\u30a2\u30af\u30b7\u30e7\u30f3<\/span>\r\n      refetchQueries<\/span>:<\/span> [{<\/span> query<\/span>:<\/span> QueryGetTodos<\/span> }],<\/span>\r\n      update<\/span>:<\/span> (<\/span>proxy<\/span>,<\/span> {<\/span> data<\/span>:<\/span> {<\/span> deleteTodo<\/span>:<\/span> {<\/span> id<\/span> }<\/span> }<\/span> })<\/span> =><\/span> {<\/span>\r\n        const<\/span> query<\/span> =<\/span> QueryGetTodos<\/span>;<\/span>\r\n        const<\/span> data<\/span> =<\/span> proxy<\/span>.<\/span>readQuery<\/span>({<\/span> query<\/span> });<\/span>\r\n\r\n        data<\/span>.<\/span>getTodos<\/span> =<\/span> data<\/span>.<\/span>getTodos<\/span>.<\/span>filter<\/span>(<\/span>todo<\/span> =><\/span> todo<\/span>.<\/span>id<\/span> !==<\/span> id<\/span>);<\/span>\r\n\r\n        proxy<\/span>.<\/span>writeQuery<\/span>({<\/span> query<\/span>,<\/span> data<\/span> });<\/span>\r\n      }<\/span>\r\n    }<\/span>\r\n  })<\/span>\r\n)(<\/span>TodoList<\/span>);<\/span>\r\n<\/code><\/pre>\n
      \u5176\u4f59\u90e8\u5206\u5982\u4e0b\uff1a<\/p>\n
      class<\/span> TodoList<\/span> extends<\/span> Component<\/span> {<\/span>\r\n\r\n  constructor<\/span>(<\/span>props<\/span>)<\/span> {<\/span>\r\n    super<\/span>(<\/span>props<\/span>);<\/span>\r\n    this<\/span>.<\/span>state<\/span> =<\/span> {<\/span>\r\n      todo<\/span>:<\/span> {<\/span>\r\n        title<\/span>:<\/span> ''<\/span>,<\/span>\r\n        description<\/span>:<\/span> ''<\/span>\r\n      },<\/span>\r\n    };<\/span>\r\n  }<\/span>\r\n\r\n  \/\/ props\u306e\u521d\u671f\u5024\u3092\u8a2d\u5b9a<\/span>\r\n  static<\/span> defaultProps<\/span> =<\/span> {<\/span>\r\n      todos<\/span>:<\/span> [],<\/span>\r\n      onAdd<\/span>:<\/span> ()<\/span> =><\/span> null<\/span>,<\/span>\r\n      onDelete<\/span>:<\/span> ()<\/span> =><\/span> null<\/span>,<\/span>\r\n      onUpdate<\/span>:<\/span> ()<\/span> =><\/span> null<\/span>,<\/span>\r\n  }<\/span>\r\n\r\n  todoForm<\/span> =<\/span> ()<\/span> =><\/span> (<\/span>\r\n    <<\/span>div<\/span>><\/span>\r\n      <<\/span>span<\/span>><<\/span>input<\/span> type<\/span>=<\/span>\"<\/span>text<\/span>\"<\/span> placeholder<\/span>=<\/span>\"<\/span>\u30bf\u30a4\u30c8\u30eb<\/span>\"<\/span> value<\/span>=<\/span>{<\/span>this<\/span>.<\/span>state<\/span>.<\/span>todo<\/span>.<\/span>title<\/span>}<\/span> onChange<\/span>=<\/span>{<\/span>this<\/span>.<\/span>handleChange<\/span>.<\/span>bind<\/span>(<\/span>this<\/span>,<\/span> '<\/span>title<\/span>'<\/span>)}<\/span> \/><\/<\/span>span<\/span>><\/span>\r\n      <<\/span>span<\/span>><<\/span>input<\/span> type<\/span>=<\/span>\"<\/span>text<\/span>\"<\/span> placeholder<\/span>=<\/span>\"<\/span>\u8aac\u660e<\/span>\"<\/span> value<\/span>=<\/span>{<\/span>this<\/span>.<\/span>state<\/span>.<\/span>todo<\/span>.<\/span>description<\/span>}<\/span> onChange<\/span>=<\/span>{<\/span>this<\/span>.<\/span>handleChange<\/span>.<\/span>bind<\/span>(<\/span>this<\/span>,<\/span> '<\/span>description<\/span>'<\/span>)}<\/span> \/><\/<\/span>span<\/span>><\/span>\r\n      <<\/span>button<\/span> onClick<\/span>=<\/span>{<\/span>this<\/span>.<\/span>handleOnAdd<\/span>}<\/span>><\/span>\u8ffd\u52a0<\/span><<\/span>\/button<\/span>>\r\n<\/span>    <<\/span>\/div<\/span>>\r\n<\/span>  );<\/span>\r\n\r\n  renderTodo<\/span> =<\/span> (<\/span>todo<\/span>)<\/span> =><\/span> (<\/span>\r\n    <<\/span>li<\/span> key<\/span>=<\/span>{<\/span>todo<\/span>.<\/span>id<\/span>}<\/span>><\/span>\r\n      <<\/span>input<\/span> type<\/span>=<\/span>\"<\/span>checkbox<\/span>\"<\/span>checked<\/span>=<\/span>{<\/span>todo<\/span>.<\/span>completed<\/span>}<\/span> onChange<\/span>=<\/span>{<\/span>this<\/span>.<\/span>handleCheck<\/span>.<\/span>bind<\/span>(<\/span>this<\/span>,<\/span> todo<\/span>)}<\/span> \/<\/span>>\r\n<\/span>      {<\/span>!<\/span>todo<\/span>.<\/span>completed<\/span> &&<\/span> todo<\/span>.<\/span>title<\/span>}<\/span>\r\n      {<\/span>todo<\/span>.<\/span>completed<\/span> &&<\/span> (<\/span><<\/span>s<\/span>><\/span>{<\/span>todo<\/span>.<\/span>title<\/span>}<\/span><<\/span>\/s><\/span>)<\/span>}\r\n<\/span>      <<\/span>button<\/span> onClick<\/span>=<\/span>{<\/span>this<\/span>.<\/span>handleOnDelete<\/span>.<\/span>bind<\/span>(<\/span>this<\/span>,<\/span> todo<\/span>)}<\/span>><\/span>\u524a\u9664<\/span><<\/span>\/button<\/span>>\r\n<\/span>    <<\/span>\/li<\/span>>\r\n<\/span>    );<\/span>\r\n\r\n  handleChange<\/span> =<\/span> (<\/span>field<\/span>,<\/span> {<\/span> target<\/span>:<\/span> {<\/span> value<\/span> }})<\/span> =><\/span> {<\/span>\r\n    const<\/span> {<\/span> todo<\/span> }<\/span> =<\/span> this<\/span>.<\/span>state<\/span>;<\/span>\r\n    todo<\/span>[<\/span>field<\/span>]<\/span> =<\/span> value<\/span>;<\/span>\r\n    this<\/span>.<\/span>setState<\/span>({<\/span> todo<\/span> });<\/span>\r\n  }<\/span>\r\n\r\n  handleOnAdd<\/span> =<\/span> ()<\/span> =><\/span> {<\/span>\r\n    if<\/span> (<\/span>!<\/span>this<\/span>.<\/span>state<\/span>.<\/span>todo<\/span>.<\/span>title<\/span> ||<\/span> !<\/span>this<\/span>.<\/span>state<\/span>.<\/span>todo<\/span>.<\/span>description<\/span>)<\/span> {<\/span>\r\n      return<\/span>;<\/span>\r\n    }<\/span>\r\n    const<\/span> uuid<\/span> =<\/span> uuidv4<\/span>();<\/span>\r\n    const<\/span> newTodo<\/span> =<\/span> {<\/span>\r\n      id<\/span>:<\/span> uuid<\/span>,<\/span>\r\n      title<\/span>:<\/span> this<\/span>.<\/span>state<\/span>.<\/span>todo<\/span>.<\/span>title<\/span>,<\/span>\r\n      description<\/span>:<\/span> this<\/span>.<\/span>state<\/span>.<\/span>todo<\/span>.<\/span>description<\/span>,<\/span>\r\n      completed<\/span>:<\/span> false<\/span>\r\n    }<\/span>\r\n    this<\/span>.<\/span>props<\/span>.<\/span>onAdd<\/span>(<\/span>newTodo<\/span>);<\/span>\r\n\r\n    const<\/span> {<\/span> todo<\/span> }<\/span> =<\/span> this<\/span>.<\/span>state<\/span>;<\/span>\r\n    todo<\/span>.<\/span>title<\/span> =<\/span> ''<\/span>;<\/span>\r\n    todo<\/span>.<\/span>description<\/span> =<\/span> ''<\/span>;<\/span>\r\n    this<\/span>.<\/span>setState<\/span>({<\/span> todo<\/span> });<\/span>\r\n  }<\/span>\r\n\r\n  handleCheck<\/span> =<\/span> (<\/span>todo<\/span>)<\/span> =><\/span> {<\/span>\r\n    this<\/span>.<\/span>props<\/span>.<\/span>onCheck<\/span>(<\/span>todo<\/span>);<\/span>\r\n  }<\/span>\r\n\r\n  handleOnDelete<\/span> =<\/span> (<\/span>todo<\/span>)<\/span> =><\/span> {<\/span>\r\n    this<\/span>.<\/span>props<\/span>.<\/span>onDelete<\/span>(<\/span>todo<\/span>);<\/span>\r\n  }<\/span>\r\n\r\n  render<\/span>()<\/span> {<\/span>\r\n    const<\/span> {<\/span> todos<\/span> }<\/span> =<\/span> this<\/span>.<\/span>props<\/span>;<\/span>\r\n    return<\/span> (<\/span>\r\n      <<\/span>Fragment<\/span>><\/span>\r\n        {<\/span>this<\/span>.<\/span>todoForm<\/span>()}<\/span>\r\n        <<\/span>ul<\/span>><\/span>\r\n          {<\/span>todos<\/span>.<\/span>map<\/span>(<\/span>this<\/span>.<\/span>renderTodo<\/span>)}<\/span>\r\n        <<\/span>\/ul<\/span>>\r\n<\/span>      <<\/span>\/Fragment<\/span>>\r\n<\/span>    );<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
      \u8bf7\u6309\u7167\u4ee5\u4e0b\u9009\u9879\u8fdb\u884c\u53c2\u8003<\/h2>\n
      \u7528ReactJS\u6784\u5efa\u5ba2\u6237\u7aef\u5e94\u7528\u7a0b\u5e8f -AWS AppSync
      \n\u4f7f\u7528React\u548cApollo\u5c1d\u8bd5Github GraphQL API -Qiita
      \nAPOLLO\u5ba2\u6237\u7aef -Apollo<\/p>\n
      \u7b80\u8981\u603b\u7ed3<\/h2>\n
      \u5173\u4e8e\u5ba2\u6237\u7aef\u5b9e\u73b0\u7684\u90e8\u5206\uff0c\u5f88\u591a\u90fd\u4f9d\u8d56\u4e8ereact-apollo\u3002\u5982\u679c\u8981\u5145\u5206\u5229\u7528AWS AppSync\u548cReact\u7684\u7ec4\u5408\uff0c\u6211\u4eec\u9700\u8981\u4ed4\u7ec6\u67e5\u770breact-apollo\u7684\u5e2e\u52a9\u65b9\u6cd5\u548c\u7f13\u5b58\u9009\u9879\u7b49\u3002<\/p>\n
      \u53e6\u4e00\u65b9\u9762\uff0c\u9664\u6b64\u4e4b\u5916\u7684\u90e8\u5206\u90fd\u7531aws-appsync-react\u81ea\u52a8\u5904\u7406\uff0c\u4e0d\u9700\u8981\u62c5\u5fc3\u3002<\/p>\n
      \u672c\u6b21\u53ea\u4f7f\u7528\u4e86Query\u548cMutation\u6765\u8fdb\u884cGraphQL\u67e5\u8be2\uff0c\u4f46\u5982\u6709\u673a\u4f1a\uff0c\u6211\u4e5f\u60f3\u5c1d\u8bd5\u4f7f\u7528Subscription\u6765\u4e0e\u670d\u52a1\u5668\u5b9e\u65f6\u901a\u4fe1\u7684\u6a21\u5f0f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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