在Nuxt.js上创建在线商店2演练第1部分

{
  "name": "habr",
  "version": "1.0.0",
  "private": true,
  "scripts": {
    "analyze": "cross-env NODE_ENV=production  nuxt build --analyze",
    "build": "cross-env NODE_ENV=production nuxt build",
    "buildandstart": "cross-env NODE_ENV=production nuxt build && cross-env NODE_ENV=production nuxt start",
    "dev": "cross-env NODE_ENV=development NUXT_PORT=3000 nuxt",
    "start": "cross-env NODE_ENV=production nuxt start"
  },
  "dependencies": {
    "@nuxtjs/axios": "5.9.5",
    "@nuxtjs/style-resources": "1.0.0",
    "@nuxtjs/svg": "0.1.6",
    "cookie-universal-nuxt": "2.1.1",
    "cross-env": "7.0.0",
    "cssnano": "4.1.10",
    "cssnano-preset-advanced": "4.0.7",
    "imagemin-mozjpeg": "^8.0.0",
    "imagemin-webpack-plugin": "^2.4.2",
    "intersection-observer": "^0.7.0",
    "node-sass": "^4.13.1",
    "normalize.css": "8.0.1",
    "nuxt": "2.11.0",
    "nuxt-trailingslash-module": "1.1.0",
    "nuxt-webfontloader": "^1.1.0",
    "sass-loader": "^8.0.2",
    "vue-js-modal": "1.3.31",
    "vue-lazy-hydration": "^1.0.0-beta.12",
    "vue-lazyload": "1.3.3",
    "vue-svg-loader": "0.11.0",
    "vuelidate": "^0.7.5"
  },
  "devDependencies": {
    "@nuxtjs/eslint-config": "2.0.0",
    "babel-eslint": "8",
    "eslint": "^6.8.0",
    "eslint-config-prettier": "6.10.0",
    "eslint-config-standard": "14.1.0",
    "eslint-friendly-formatter": "4.0.1",
    "eslint-loader": "3.0.3",
    "eslint-plugin-array-func": "3.1.3",
    "eslint-plugin-import": "2.20.1",
    "eslint-plugin-jest": "23.7.0",
    "eslint-plugin-lodash": "6.0.0",
    "eslint-plugin-no-loops": "0.3.0",
    "eslint-plugin-no-use-extend-native": "0.4.1",
    "eslint-plugin-node": "11.0.0",
    "eslint-plugin-prettier": "3.1.2",
    "eslint-plugin-promise": "4.2.1",
    "eslint-plugin-security": "1.4.0",
    "eslint-plugin-standard": "4.0.1",
    "eslint-plugin-vue": "6.1.2",
    "prettier": "1.19.1",
    "prettier-eslint": "9.0.1"
  }
}

<template>
    <nuxt/>
</template>

<script>
export default {
  computed: {
    meta () {
      return [
        { charset: 'utf-8' },
        {
          name: 'viewport',
          content: 'width=device-width, initial-scale=1, maximum-scale=1 shrink-to-fit=no'
        },
        { hid: 'description', name: 'description', content: '' }
      ]
    }
  },

  head () {
    const canonical = `https://mysite.com${this.$route.path
      .toLowerCase()
      .replace(/\/$/, '')}`
    return {
      meta: [
        ...this.meta

      ],
      script: [
        // { src: 'https://markknol.imtqy.com/console-log-viewer/console-log-viewer.js' }
      ],
      link: [{ rel: 'canonical', href: canonical }]
    }
  }
}
</script>

• name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1 shrink-to-fit=no" ( Safary iOS).
• charset="utf-8"

<template>
    <div>
<h1> !</h1>
    </div>
</template>

<script>
    export default {

    }
</script>

const imageminMozjpeg = require('imagemin-mozjpeg')
const ImageminPlugin = require('imagemin-webpack-plugin').default
const isDev = process.env.NODE_ENV !== 'production'

module.exports = {
  mode: 'universal',
  ...(!isDev && {
    modern: 'client'
  }),

  head: {
    htmlAttrs: {
      lang: 'ru'
    },
    title: 'Nuxt APP',
    meta: [
      { hid: 'description', name: 'description', content: '-' }
    ],
    link: [
      { rel: 'shortcut icon', href: 'favicon.ico' }
    ]
  },
  rootDir: __dirname,
  serverMiddleware: [
  ],
  router: {
    prefetchLinks: false
  },
  loading: { color: '#ddd' },
  css: [
    'normalize.css',
    './assets/scss/global-styles.scss'
  ],
  plugins: [
  ],
  modules: [
    // Doc: https://axios.nuxtjs.org/usage
    '@nuxtjs/axios',
    'nuxt-trailingslash-module',
    'nuxt-webfontloader',
    'cookie-universal-nuxt',
    '@nuxtjs/style-resources'
  ],

  webfontloader: {
    events: false,
    google: {
      families: ['Montserrat:400,500,600:cyrillic&display=swap']
    },
    timeout: 5000
  },
  styleResources: {
    // your settings here
    // scss: ['./assets/scss/global-variables.scss'], // alternative: scss
    less: [],
    stylus: []
  },
  /*
  ** Axios module configuration
  */
  axios: {
    // See https://github.com/nuxt-community/axios-module#options
  },
  render: {
    // http2: {
    //     push: true,
    //     pushAssets: (req, res, publicPath, preloadFiles) => preloadFiles
    //     .map(f => `<${publicPath}${f.file}>; rel=preload; as=${f.asType}`)
    //   },
    // compressor: false,
    resourceHints: false,
    etag: false,
    static: {
      etag: false
    }
  },
  /*
  ** Build configuration
  */
  build: {
    optimizeCss: false,
    filenames: {
      app: ({ isDev }) => isDev ? '[name].js' : 'js/[contenthash].js',
      chunk: ({ isDev }) => isDev ? '[name].js' : 'js/[contenthash].js',
      css: ({ isDev }) => isDev ? '[name].css' : 'css/[contenthash].css',
      img: ({ isDev }) => isDev ? '[path][name].[ext]' : 'img/[contenthash:7].[ext]',
      font: ({ isDev }) => isDev ? '[path][name].[ext]' : 'fonts/[contenthash:7].[ext]',
      video: ({ isDev }) => isDev ? '[path][name].[ext]' : 'videos/[contenthash:7].[ext]'
    },
    ...(!isDev && {
      html: {
        minify: {
          collapseBooleanAttributes: true,
          decodeEntities: true,
          minifyCSS: true,
          minifyJS: true,
          processConditionalComments: true,
          removeEmptyAttributes: true,
          removeRedundantAttributes: true,
          trimCustomFragments: true,
          useShortDoctype: true
        }
      }
    }),
    splitChunks: {
      layouts: true,
      pages: true,
      commons: true
    },
    optimization: {
      minimize: !isDev
    },
    ...(!isDev && {
      extractCSS: {
        ignoreOrder: true
      }
    }),
    transpile: ['vue-lazy-hydration', 'intersection-observer'],
    postcss: {
      plugins: {
        ...(!isDev && {
          cssnano: {
            preset: ['advanced', {
              autoprefixer: false,
              cssDeclarationSorter: false,
              zindex: false,
              discardComments: {
                removeAll: true
              }
            }]
          }
        })
      },
      ...(!isDev && {
        preset: {
          browsers: 'cover 99.5%',
          autoprefixer: true
        }
      }),

      order: 'cssnanoLast'
    },
    extend (config, ctx) {
      const ORIGINAL_TEST = '/\\.(png|jpe?g|gif|svg|webp)$/i'
      const vueSvgLoader = [
        {
          loader: 'vue-svg-loader',
          options: {
            svgo: false
          }
        }
      ]
      const imageMinPlugin = new ImageminPlugin({
        pngquant: {
          quality: '5-30',
          speed: 7,
          strip: true
        },
        jpegtran: {
          progressive: true

        },
        gifsicle: {
          interlaced: true
        },
        plugins: [
          imageminMozjpeg({
            quality: 70,
            progressive: true
          })

        ]
      })
      if (!ctx.isDev) config.plugins.push(imageMinPlugin)

      config.module.rules.forEach(rule => {
        if (rule.test.toString() === ORIGINAL_TEST) {
          rule.test = /\.(png|jpe?g|gif|webp)$/i
          rule.use = [
            {
              loader: 'url-loader',
              options: {
                limit: 1000,
                name: ctx.isDev ? '[path][name].[ext]' : 'img/[contenthash:7].[ext]'
              }
            }
          ]
        }
      })
      //  Create the custom SVG rule
      const svgRule = {
        test: /\.svg$/,
        oneOf: [
          {
            resourceQuery: /inline/,
            use: vueSvgLoader
          },
          {
            resourceQuery: /data/,
            loader: 'url-loader'
          },
          {
            resourceQuery: /raw/,
            loader: 'raw-loader'
          },
          {
            loader: 'file-loader' // By default, always use file-loader
          }
        ]
      }

      config.module.rules.push(svgRule) // Actually add the rule
    }
  }
}

// function for Mock API
const sleep = m => new Promise(r => setTimeout(r, m))
const categories = [
  {
    cName: '',
    cSlug: 'cats',
    cImage: 'https://source.unsplash.com/300x300/?cat,cats'
  },
  {
    cName: '',
    cSlug: 'dogs',
    cImage: 'https://source.unsplash.com/300x300/?dog,dogs'
  },
  {
    cName: '',
    cSlug: 'wolfs',
    cImage: 'https://source.unsplash.com/300x300/?wolf'
  },
  {
    cName: '',
    cSlug: 'bulls',
    cImage: 'https://source.unsplash.com/300x300/?ox'
  }
]

export const state = () => ({
  categoriesList: []
})
export const mutations = {
  SET_CATEGORIES_LIST (state, categories) {
    state.categoriesList = categories
  }
}
export const actions = {
  async getCategoriesList ({ commit }) {
    try {
      await sleep(1000)
      await commit('SET_CATEGORIES_LIST', categories)
    } catch (err) {
      console.log(err)
      throw new Error('  ,  ')
    }
  }
}

• const sleep = m => new Promise(r => setTimeout(r, m))

  
  

  , Async .

  
  

• export const state = () => ({
  categoriesList: []
  })

  
  

  . .

  
  

• export const mutations = {
  SET_CATEGORIES_LIST (state, categories) {
  state.categoriesList = categories
  }
  }

  
  

  , . . . .

  
  

• export const actions = {
  async getCategoriesList ({ commit }) {
  try {
    await sleep(1000)
    await commit('SET_CATEGORIES_LIST', categories)
  } catch (err) {
    console.log(err)
    throw new Error('  ,  ')
  }
  }
  }

  
  

  actions, , , store comit, , , . action Nuxt , axios API.
  actions API. actions, . API, API .

  
  

<template>
  <div>
    <h2> </h2>
    <div :class="$style.wrapper">
      <div
        v-for="category in categories"
        :key="category.cSlug"
        :class="$style.block"
      >
        <nuxt-link :to="`/category/${category.cSlug}`">
          <p>{{ category.cName }}</p>
          <img :src="category.cImage" />
        </nuxt-link>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  props: {
    categories: {
      type: Array,
      default: () => []
    }
  }
}
</script>

<style lang="scss" module>
.wrapper {
  display: flex;
}
.block {
display: flex;
flex-direction: column;
}
</style>

<template>
  <div>
    <h1>- ""</h1>
    <CategoriesList :categories="categories" />
  </div>
</template>

<script>
import CategoriesList from '~~/components/common/CategoriesList'
import { mapState } from 'vuex'
export default {
  components: {
    CategoriesList
  },
  async asyncData ({ app, route, params, error, store }) {
    try {
      await store.dispatch('getCategoriesList')
    } catch (err) {
      console.log(err)
      return error({
        statusCode: 404,
        message: '      '
      })
    }
  },
  computed: {
    ...mapState({
      categories: 'categoriesList'
    })
  }
}
</script>

<template>
  <div>
    <h1>{{ category.cName }}</h1>
    <p>{{ category.cDesc }}</p>
  </div>
</template>

<script>
import { mapState } from 'vuex'
export default {
  async asyncData ({ app, params, route, error }) {
    try {
      await app.store.dispatch('getCurrentCategory', { route })
    } catch (err) {
      console.log(err)
      return error({
        statusCode: 404,
        message: '      '
      })
    }
  },
  computed: {
    ...mapState({
      category: 'currentCategory'
    })
  },
  head () {
    return {
      title: this.category.cTitle,
      meta: [
        {
          hid: 'description',
          name: 'description',
          content: this.category.cMetaDescription
        }
      ]
    }
  }
}
</script>

// function for Mock API
const sleep = m => new Promise(r => setTimeout(r, m))
const categories = [
  {
    cTitle: '',
    cName: '',
    cSlug: 'cats',
    cMetaDescription: ' ',
    cDesc: '',
    cImage: 'https://source.unsplash.com/300x300/?cat,cats'
  },
  {
    cTitle: '',
    cName: '',
    cSlug: 'dogs',
    cMetaDescription: ' ',
    cDesc: '',
    cImage: 'https://source.unsplash.com/300x300/?dog,dogs'
  },
  {
    cTitle: '',
    cName: '',
    cSlug: 'wolfs',
    cMetaDescription: ' ',
    cDesc: '',
    cImage: 'https://source.unsplash.com/300x300/?wolf'
  },
  {
    cTitle: '',
    cName: '',
    cSlug: 'bulls',
    cMetaDescription: ' ',
    cDesc: '',
    cImage: 'https://source.unsplash.com/300x300/?bull'
  }
]

export const state = () => ({
  categoriesList: [],
  currentCategory: {}
})
export const mutations = {
  SET_CATEGORIES_LIST (state, categories) {
    state.categoriesList = categories
  },
  SET_CURRENT_CATEGORY (state, category) {
    state.currentCategory = category
  }
}
export const actions = {
  async getCategoriesList ({ commit }) {
    try {
      await sleep(1000)
      await commit('SET_CATEGORIES_LIST', categories)
    } catch (err) {
      console.log(err)
      throw new Error('  ,  ')
    }
  },
  async getCurrentCategory ({ commit }, { route }) {
    await sleep(1000)
    const category = categories.find((cat) => cat.cSlug === route.params.CategorySlug)
    await commit('SET_CURRENT_CATEGORY', category)
  }
}

// function for Mock API
const sleep = m => new Promise(r => setTimeout(r, m))
const categories = [
  {
    id: 'cats',
    cTitle: '',
    cName: '',
    cSlug: 'cats',
    cMetaDescription: ' ',
    cDesc: '',
    cImage: 'https://source.unsplash.com/300x300/?cat,cats',
    products: []
  },
  {
    id: 'dogs',
    cTitle: '',
    cName: '',
    cSlug: 'dogs',
    cMetaDescription: ' ',
    cDesc: '',
    cImage: 'https://source.unsplash.com/300x300/?dog,dogs',
    products: []
  },
  {
    id: 'wolfs',
    cTitle: '',
    cName: '',
    cSlug: 'wolfs',
    cMetaDescription: ' ',
    cDesc: '',
    cImage: 'https://source.unsplash.com/300x300/?wolf',
    products: []
  },
  {
    id: 'bulls',
    cTitle: '',
    cName: '',
    cSlug: 'bulls',
    cMetaDescription: ' ',
    cDesc: '',
    cImage: 'https://source.unsplash.com/300x300/?bull',
    products: []
  }
]
function addProductsToCategory (products, category) {
  const categoryInner = { ...category, products: [] }
  products.map(p => {
    if (p.category_id === category.id) {
      categoryInner.products.push({
        id: p.id,
        pName: p.pName,
        pSlug: p.pSlug,
        pPrice: p.pPrice,
        image: `https://source.unsplash.com/300x300/?${p.pName}`
      })
    }
  })
  return categoryInner
}
export const state = () => ({
  categoriesList: [],
  currentCategory: {},
  currentProduct: {}
})
export const mutations = {
  SET_CATEGORIES_LIST (state, categories) {
    state.categoriesList = categories
  },
  SET_CURRENT_CATEGORY (state, category) {
    state.currentCategory = category
  },
  SET_CURRENT_PRODUCT (state, product) {
    state.currentProduct = product
  }
}
export const actions = {
  async getCategoriesList ({ commit }) {
    try {
      await sleep(1000)
      await commit('SET_CATEGORIES_LIST', categories)
    } catch (err) {
      console.log(err)
      throw new Error('  ,  ')
    }
  },
  async getCurrentCategory ({ commit }, { route }) {
    await sleep(1000)
    const category = categories.find((cat) => cat.cSlug === route.params.CategorySlug)
    const products = await this.$axios.$get('/mock/products.json')

    await commit('SET_CURRENT_CATEGORY', addProductsToCategory(products, category))
  }
}

<template>
  <div :class="$style.wrapper">
    <nuxt-link :to="`/product/${product.pSlug}`">
      <p>{{ product.pName }}</p>
      <img :src="product.image" />
    </nuxt-link>
    <p> {{ product.pPrice }}</p>
  </div>
</template>

<script>
export default {
  props: {
    product: {
      type: Object,
      default: () => {}
    }
  }
}
</script>

<style lang="scss" module>
.wrapper {
  display: flex;
  flex-direction: column;
}
</style>

<template>
  <div>
    <h1>{{ category.cName }}</h1>
    <p>{{ category.cDesc }}</p>
    <div :class="$style.productList">
      <div
        v-for="product in category.products"
        :key="product.id"
      >
        <ProductBrief :product="product" />
      </div>
    </div>
  </div>
</template>

<script>
import ProductBrief from '~~/components/category/ProductBrief'
import { mapState } from 'vuex'
export default {
  components: {
    ProductBrief
  },
  async asyncData ({ app, params, route, error }) {
    try {
      await app.store.dispatch('getCurrentCategory', { route })
    } catch (err) {
      console.log(err)
      return error({
        statusCode: 404,
        message: '      '
      })
    }
  },
  computed: {
    ...mapState({
      category: 'currentCategory'
    })
  },
  head () {
    return {
      title: this.category.cTitle,
      meta: [
        {
          hid: 'description',
          name: 'description',
          content: this.category.cMetaDescription
        }
      ]
    }
  }
}
</script>
<style lang="scss" module>
.productList {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}
</style>

import Vue from 'vue'
import VueLazyload from 'vue-lazyload'

export default async (context, inject) => {
  Vue.use(VueLazyload, {
    preLoad: 0,
    error: 'https://via.placeholder.com/300',
    // eslint-disable-next-line
    loading: require(`${'~~/assets/svg/download.svg'}`),
    attempt: 3,
    lazyComponent: true,
    observer: true,
    throttleWait: 500
  })
}