plunkerでvue その45

#概要

plunkerでvueやってみた。
練習問題、やってみた。
三日、かかった。

#練習問題

vuetifyとaxiosを使って、crudを実装せよ。

#サンプルコード

```
<!doctype html>

<html>
  <head>
     <link rel="stylesheet" href="//fonts.googleapis.com/css?family=Roboto:300,400,500,700|Material+Icons">
    <link rel="stylesheet" href="//unpkg.com/vuetify@1.5.18/dist/vuetify.min.css">
    <link rel="stylesheet" href="//cdn.materialdesignicons.com/3.5.95/css/materialdesignicons.min.css">
    <script src="//unpkg.com/vue/dist/vue.js"></script>
    <script src="//unpkg.com/vuetify@1.5.18/dist/vuetify.min.js"></script>
    <script src="//unpkg.com/axios/dist/axios.min.js"></script>
    <link rel="stylesheet" href="lib/style.css">
  </head>
  <body>
<v-app id="app">
  <v-container>
    <v-row>
      <v-col cols="10">
        <v-toolbar flat color="white">
          <v-toolbar-title>My CRUD</v-toolbar-title>
          <v-divider class="mx-2" inset vertical ></v-divider>
          <v-spacer></v-spacer>
          <v-dialog v-model="dialog" max-width="500px">
            <template v-slot:activator="{ on }">
              <v-btn color="primary" dark class="mb-2" v-on="on">New Item</v-btn>
            </template>
            <v-card>
              <v-card-title>
                <span class="headline">{{ formTitle }}</span>
              </v-card-title>
              <v-card-text>
                <v-container grid-list-md>
                  <v-layout wrap>
                    <v-flex xs12 sm6 md4>
                      <v-text-field v-model="editedItem.name" label="name"></v-text-field>
                    </v-flex>
                    <v-flex xs12 sm6 md4>
                      <v-text-field v-model="editedItem.email" label="email"></v-text-field>
                    </v-flex>
                  </v-layout>
                </v-container>
              </v-card-text>
              <v-card-actions>
                <v-spacer></v-spacer>
                <v-btn color="blue darken-1" flat @click="close">Cancel</v-btn>
                <v-btn color="blue darken-1" flat @click="save">Save</v-btn>
              </v-card-actions>
            </v-card>
          </v-dialog>
        </v-toolbar>
        <v-data-table :headers="headers" :items="serverDatas">
          <template slot="items" slot-scope="props">
            <td class="text-xs-left">{{ props.item.id }}</td>
            <td class="text-xs-left">{{ props.item.name }}</td>
            <td class="text-xs-left">{{ props.item.email }}</td>
            <td class="justify-center layout px-0">
              <v-btn small color="aqua" @click="editItem(props.item)">
                edit
              </v-btn>
              <v-btn small color="error" @click="deleteItem(props.item)">
                delete
              </v-btn>
            </td>
          </template>
        </v-data-table>
      </v-col>
    </v-row>
  </v-container>
</v-app>
  <script src="lib/script.js"></script>
  </body>
</html>




```


```
new Vue({
  el: "#app",
  data() {
    return {
      dialog: false,
      isCreate: true,
      editedItem: {
        id: 0,
        name: '',
        email: 0
      },
      headers: [{ 
        text: 'ID', 
        value: 'id' 
      }, {
        text: '名前',
        value: 'name',
      }, { 
        text: 'メルアド', 
        value: 'email' 
      }, {
        text:'修正/削除',
        value:'delete',
        sortable:false
      }],
      serverDatas:[],
    }
  },
  computed: {
    formTitle() {
      return this.isCreate ? 'New Item' : 'Edit Item'
    }
  },
  watch: {
    dialog(val) {
      val || this.close()
    }
  },
  methods: {
    deleteItem(item) {
      const index = this.serverDatas.indexOf(item)
      confirm('削除しますか') && this.serverDatas.splice(index, 1)
    },
    editItem(item) {
      this.isCreate = false
      this.editedItem = item
      this.dialog = true
    },
    close() {
      this.dialog = false
    },
    save() {
      if (!this.isCreate) 
      {
        this.update()
      } 
      else 
      {
        this.create()
      }
      this.dialog = false
    },
    update() {
      const index = this.serverDatas.indexOf(this.editedItem)
      this.serverDatas[index] = this.editedItem
    },
    create() {
      this.serverDatas.push(this.editedItem)
    },
  },
  created() {
    axios.get('https://jsonplaceholder.typicode.com/users').then( res => {
      this.serverDatas = res.data
    }).catch(e => {
      alert(e)
    }).finally(()=>{
      //alert("通信完了")
    })
  }
})




```

#成果物


https://embed.plnkr.co/plunk/9F0RIfWv8i9ZyydQ

以上。