Files
Shaun Hamilton c2a11ad00d feat: add 'back/front end' in curriculum (#42596)
* chore: rename APIs and Microservices to include "Backend" (#42515)

* fix typo

* fix typo

* undo change

* Corrected grammar mistake

Corrected a grammar mistake by removing a comma.

* change APIs and Microservices cert title

* update title

* Change APIs and Microservices certi title

* Update translations.json

* update title

* feat(curriculum): rename apis and microservices cert

* rename folder structure

* rename certificate

* rename learn Markdown

* apis-and-microservices -> back-end-development-and-apis

* update backend meta

* update i18n langs and cypress test

Co-authored-by: Shaun Hamilton <shauhami020@gmail.com>

* fix: add development to front-end libraries (#42512)

* fix: added-the-word-Development-to-front-end-libraries

* fix/added-the-word-Development-to-front-end-libraries

* fix/added-word-development-to-front-end-libraries-in-other-related-files

* fix/added-the-word-Development-to-front-end-and-all-related-files

* fix/removed-typos-from-last-commit-in-index.md

* fix/reverted-changes-that-i-made-to-dependecies

* fix/removed xvfg

* fix/reverted changes that i made to package.json

* remove unwanted changes

* front-end-development-libraries changes

* rename backend certSlug and README

* update i18n folder names and keys

* test: add legacy path redirect tests

This uses serve.json from the client-config repo, since we currently use
that in production

* fix: create public dir before moving serve.json

* fix: add missing script

* refactor: collect redirect tests

* test: convert to cy.location for stricter tests

* rename certificate folder to 00-certificates

* change crowdin config to recognise new certificates location

* allow translations to be used

Co-authored-by: Nicholas Carrigan (he/him) <nhcarrigan@gmail.com>

* add forwards slashes to path redirects

* fix cypress path tests again

* plese cypress

* fix: test different challenge

Okay so I literally have no idea why this one particular challenge
fails in Cypress Firefox ONLY. Tom and I paired and spun a full build
instance and confirmed in Firefox the page loads and redirects as
expected. Changing to another bootstrap challenge passes Cypress firefox
locally. Absolutely boggled by this.

AAAAAAAAAAAAAAA

* fix: separate the test

Okay apparently the test does not work unless we separate it into
a different `it` statement.

>:( >:( >:( >:(

Co-authored-by: Sujal Gupta <55016909+heysujal@users.noreply.github.com>
Co-authored-by: Noor Fakhry <65724923+NoorFakhry@users.noreply.github.com>
Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
Co-authored-by: Nicholas Carrigan (he/him) <nhcarrigan@gmail.com>
2021-08-13 21:57:13 -05:00

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id, title, challengeType, forumTopicId, dashedName
id title challengeType forumTopicId dashedName
5a24c314108439a4d4036143 提取狀態邏輯給 Redux 6 301429 extract-state-logic-to-redux

--description--

完成 React 組件後,我們需要把在本地 state 執行的邏輯移到 Redux 中, 這是爲小規模 React 應用添加 Redux 的第一步。 該應用的唯一功能是把用戶的新消息添加到無序列表中。 下面我們用簡單的示例來演示 React 和 Redux 之間的配合。

--instructions--

首先,定義 action 的類型 ADD,將其設置爲常量 ADD。 接着,定義創建 action 的函數addMessage(),用該函數創建添加消息的 actionmessage 傳給創建 action 的函數並返回包含該消息的 action

接着,創建名爲 messageReducer() 的 reducer 方法,爲這些消息處理狀態。 初始狀態應爲空數組。 reducer 向狀態中的消息數組添加消息,或返回當前狀態。 最後,創建 Redux store 並傳給 reducer。

--hints--

應存在一個值爲字符串 ADD 的常量 ADD

assert(ADD === 'ADD');

創建 action 的函數 addMessage 應返回 type 等於 ADD 的對象,其返回的 message 即被傳入的消息。

assert(
  (function () {
    const addAction = addMessage('__TEST__MESSAGE__');
    return addAction.type === ADD && addAction.message === '__TEST__MESSAGE__';
  })()
);

messageReducer 應是一個函數。

assert(typeof messageReducer === 'function');

存在一個 store 且其初始狀態爲空數組。

assert(
  (function () {
    const initialState = store.getState();
    return typeof store === 'object' && initialState.length === 0;
  })()
);

分發 addMessage 到 store 應添加新消息到狀態中消息數組。

assert(
  (function () {
    const initialState = store.getState();
    const isFrozen = DeepFreeze(initialState);
    store.dispatch(addMessage('__A__TEST__MESSAGE'));
    const addState = store.getState();
    return isFrozen && addState[0] === '__A__TEST__MESSAGE';
  })()
);

messageReducer 被其它任何 actions 調用時應返回當前狀態。

assert(
  (function () {
    const addState = store.getState();
    store.dispatch({ type: 'FAKE_ACTION' });
    const testState = store.getState();
    return addState === testState;
  })()
);

--seed--

--seed-contents--

// Define ADD, addMessage(), messageReducer(), and store here:

--solutions--

const ADD = 'ADD';

const addMessage = (message) => {
  return {
    type: ADD,
    message
  }
};

const messageReducer = (state = [], action) => {
  switch (action.type) {
    case ADD:
      return [
        ...state,
        action.message
      ];
    default:
      return state;
  }
};

const store = Redux.createStore(messageReducer);