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Commitfdcad0a

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tutorial outline
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‎README.md‎

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@@ -73,7 +73,38 @@ The data transformation
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```js
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constreducer= (state)=> {
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console.log('state:',state);
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console.log(state);
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return state;
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};
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```
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#####Combine Reducers
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Using thunks for async actions.
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#####Middleware
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Using thunks for async actions.
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#####Second Action
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Creating a "SORT_BY_POPULARITY" action.
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```js
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functionsortByVotes(a,b) {
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switch(true) {
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casea.votes<b.votes:
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return1;
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casea.votes>b.votes:
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return-1;
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default:
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return0;
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}
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}
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```
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Sort pokemon by votes
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#####Thunk
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Using thunks for async actions.

‎coderoad.json‎

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},
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{
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"title":"Reducer",
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"description":"The data transformation\n\n```js\nconst reducer = (state) => {\n console.log('state: ',state);\n return state;\n};\n```",
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"description":"The data transformation\n\n```js\nconst reducer = (state) => {\n console.log(state);\n return state;\n};\n```",
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"tasks": [
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{
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"description":"Create a reducer and call it as the first param in your `createStore`",
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"actions": [
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"open('index.js')"
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]
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},
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{
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"description":"Change the state",
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"tests": [
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"04/02"
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]
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},
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{
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"description":"Pass an action to the reducer",
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"tests": [
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"04/03"
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]
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},
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{
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"description":"Dispatch two voteUp actions through the reducer: `store.dispatch(voteUp(2))`",
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"tests": [
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"04/04"
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]
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},
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{
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"description":"Create a `switch` statement and pass in `action.type`, the default return should return `state`",
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"tests": [
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"04/05"
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]
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},
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{
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"description":"add a switch case for `VOTE_UP`. Inside of it, console.log the `id` of the action passed in\n\n# Pure Functions\n\n05/01\n```js\nconst nextPokemon = state.pokemon.map(p => {\n if (id === p.id) {\n p.votes += 1;\n }\n return p;\n });\n return {\n pokemon: nextPokemon\n };\n ```",
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"tests": [
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"04/06"
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]
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},
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{
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"description":"Return a new list of Pokemon with the pokemon matching the id incrementing its votes by one",
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"tests": [
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"05/01"
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]
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},
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{
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"description":"Use Object.assign",
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"tests": [
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"05/02"
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],
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"hints": [
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"return `Object.assign({}, { pokemon: nextPokemon });`"
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]
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}
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],
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"onPageComplete":""
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},
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{
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"title":"Combine Reducers",
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"description":"Using thunks for async actions.",
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"tasks": [
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{
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"description":"import `combineReducers` from redux",
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"tests": [
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"06/01"
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]
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},
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{
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"description":"set reducers using combineReducers, pass it into store",
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"tests": [
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"06/02"
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]
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},
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{
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"description":"create a\"defaultPokemon\" state",
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"tests": [
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"06/03"
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]
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},
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{
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"description":"pass the default state into the pokemon reducer",
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"tests": [
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"06/04"
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]
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},
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{
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"description":"set the initial state to an empty object",
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"tests": [
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"06/05"
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]
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}
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]
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},
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{
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"title":"Middleware",
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"description":"Using thunks for async actions.",
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"tasks": [
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{
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"description":"import `applyMiddleware`",
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"tests": [
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"07/01"
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]
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},
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{
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"description":"set the second param in createStore to `applyMiddleware()`",
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"tests": [
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"07/02"
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]
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},
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{
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"description":"install\"redux-logger\" using npm",
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"tests": [
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"07/03"
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]
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},
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{
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"description":"create a\"logger\" as the result of `createLogger()`",
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"tests": [
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"07/04"
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]
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},
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{
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"description":"pass\"logger\" into `applyMiddleware()`",
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"tests": [
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"07/05"
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]
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}
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],
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"onPageComplete":"Look in the console"
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},
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{
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"title":"Second Action",
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"description":"Creating a\"SORT_BY_POPULARITY\" action.\n\n```js\nfunction sortByVotes(a, b) {\n switch(true) {\n case a.votes < b.votes:\n return 1;\n case a.votes > b.votes:\n return -1;\n default:\n return 0;\n }\n }\n```\n\nSort pokemon by votes",
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"tasks": [
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{
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"description":"create an action type for 'SORT_BY_POPULARITY'",
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"tests": [
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"08/01"
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]
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},
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{
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"description":"create an action creator called 'sortByPopularity'",
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"tests": [
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"08/02"
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]
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},
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{
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"description":"dispatch a `sortByPopularity` action after the two voteUp dispatches",
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"tests": [
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"08/03"
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]
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},
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{
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"description":"add a `SORT_BY_POPULARITY` case that returns `pokemon.sort();`",
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"tests": [
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"08/04"
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]
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},
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{
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"description":"create a sortByVotes function and pass it into the pokemon.sort function",
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"tests": [
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"08/05"
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]
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},
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{
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"description":"Make a `sortByKey` function, which is more reusable, by wrapping it in a function that takes a key",
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"tests": [
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"08/06"
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]
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},
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{
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"description":"You've just created a **thunk** - a function that returns a function. Pass your function into the pokemon.sort() method and give it the key of 'votes'",
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"tests": [
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"08/07"
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]
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}
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],
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"onPageComplete":"In the next step, we'll look at using thunks to call async actions"
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},
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{
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"title":"Thunk",
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"description":"Using thunks for async actions.",
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"tasks": [
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{
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"description":"install\"redux-thunk\" as a dependency",
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"tests": [
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"09/01"
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]
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},
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{
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"description":"import thunk from\"redux-thunk\"",
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"tests": [
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"09/02"
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]
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},
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{
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"description":"add thunk to applyMiddleware. The logger should always go last",
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"tests": [
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"09/03"
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]
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}
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]
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}

‎tutorial/04/01.js‎

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/// load('index.js')
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describe('01 reducer',()=>{
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it('doesn\'t take a "state" param',()=>{
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expect(reducer).to.have.length(1);
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});
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it('doesn\'t return "state"',()=>{
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expect(reducer({a:1}).to.deep.equal({a:1});
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});
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});

‎tutorial/04/03.js‎

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‎tutorial/04/04.js‎

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‎tutorial/04/05.js‎

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‎tutorial/04/06.js‎

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‎tutorial/04/index.md‎

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```js
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constreducer= (state)=> {
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console.log('state:',state);
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console.log(state);
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return state;
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};
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```
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+ Create a reducer and call it as the first param in your`createStore`
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@test('04/01')
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@action(open('index.js'))
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+ Change the state
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@test('04/02')
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+ Pass an action to the reducer
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@test('04/03')
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+ Dispatch two voteUp actions through the reducer:`store.dispatch(voteUp(2))`
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@test('04/04')
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+ Create a`switch` statement and pass in`action.type`, the default return should return`state`
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@test('04/05')
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+ add a switch case for`VOTE_UP`. Inside of it, console.log the`id` of the action passed in
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@test('04/06')

‎tutorial/05/01.js‎

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‎tutorial/05/02.js‎

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