重構頁面
重構可能會造成一些功能癱瘓,本章先著重在畫面,接下來會把功能修復,莫急莫慌莫害怕
管理後台
由於我們之前在 App
組件中已經有了共用的工具列,所以打開 src/views/admin/Index.vue
修改成
<template>
<div>
<div class="admin-new">
<div class="container">
<h1>In Admin</h1>
<router-view/>
</div>
</div>
</div>
</template>
商品列表
接著打開後台的商品組件 src/views/admin/Products.vue
,將 <template>
修改成
<template>
<div class="products">
<el-table
class="table"
:data="products">
<el-table-column
prop="name"
label="名稱"
width="180">
</el-table-column>
<el-table-column
prop="price"
label="售價"
width="180">
</el-table-column>
<el-table-column
prop="manufacturer.name"
label="製造商"
width="180">
</el-table-column>
<el-table-column
label="管理"
width="200">
<template slot-scope="scope">
<el-button class="modify" type="text" size="small"><router-link :to="'/admin/edit/' + scope.row._id">修改</router-link></el-button>
<el-button class="remove" @click="removeProduct(scope.row._id), deleteRow(scope.$index, products)" type="text" size="small">删除</el-button>
</template>
</el-table-column>
</el-table>
</div>
</template>
看起來和前台的 ProductItem
組件中表格非常相似,差在對商品物件的操作。一個是將商品加入或移出購物車,一個是刪除或修改商品。
編輯商品
打開 ProductForm
組件,在 <template>
內使用組件庫提供的 el-form
表單組件代替原本簡陋的 form 表單
<template>
<div class="productInfo">
<el-form class="form" ref="form" :model="model" label-width="180px">
<el-form-item label="Name">
<el-input v-model="model.name"></el-input>
</el-form-item>
<el-form-item label="Price">
<el-input v-model="model.price"></el-input>
</el-form-item>
<el-form-item label="Manufacturer ">
<el-select v-model="model.manufacturer.name" clearable placeholder="请选择制造商">
<el-option
v-for="manufacturer in manufacturers"
:key="manufacturer._id"
:label="manufacturer.name"
:value="manufacturer.name"
></el-option>
</el-select>
</el-form-item>
<el-form-item label="Image ">
<el-input v-model="model.image"></el-input>
</el-form-item>
<el-form-item label="Description ">
<el-input type="textarea" v-model="model.description"></el-input>
</el-form-item>
<el-form-item>
<el-button v-if="isEditing" type="primary" @click="onSubmit">Update Product</el-button>
<el-button v-else @click="onSubmit">Add Product</el-button>
</el-form-item>
</el-form>
</div>
</template>
接著要解決 src/views/admin/Edit.vue
組件內傳入的 computed model
無法被編輯的問題。
理由是 input 作為受控的組件,會一直顯示 Vue 的綁定資料,輸入框內容將無法進行編輯Input 输入框。結果送出之後還是沒反應,這很正常先繼續把畫面調好,等等我們會來修復它
打開 Edit
組件,將原本在 computed 中的 model
屬性放到 data
屬性中,並移除原本在 computed 中的屬性
<template>
<div>
<div class="title">
<h1>This is Admin/Edit</h1>
</div>
<product-form
@save-product="updateProduct"
:model="model"
:manufacturers="manufacturers"
:isEditing="true"
></product-form>
</div>
</template>
<script>
import ProductForm from "@/components/products/ProductForm.vue";
export default {
data() {
const product = this.$store.getters.productById(this.$route.params["id"]);
return {
// 回傳 product 的備份,是為了在修改 product 的備份之後,在保存之前不修改本地 Vuex store 的 product 屬性
model: { ...product, manufacturer: { ...product.manufacturer } }
};
},
created() {
const { name } = this.model;
if (!name) {
this.$store.dispatch("productById", {
productId: this.$route.params["id"]
});
}
if (this.manufacturers.length === 0) {
this.$store.dispatch("allManufacturers");
}
},
computed: {
manufacturers() {
return this.$store.getters.allManufacturers;
},
},
methods: {
updateProduct(product) {
this.$store.dispatch("updateProduct", {
product
});
}
},
components: {
"product-form": ProductForm
}
};
</script>
接著,長得跟 Edit
組件很像的 New
組件也一起重構
<template>
<product-form @save-product="addProduct" :model="model" :manufacturers="manufacturers"></product-form>
</template>
<script>
import ProductForm from "@/components/products/ProductForm.vue";
export default {
data() {
return {
model: { manufacturer: { name: "" } }
};
},
created() {
if (this.manufacturers.length === 0) {
this.$store.dispatch("allManufacturers");
}
},
computed: {
manufacturers() {
return this.$store.getters.allManufacturers;
}
},
methods: {
addProduct(model) {
this.$store.dispatch("addProduct", {
product: model
});
}
},
components: {
"product-form": ProductForm
}
};
</script>
編輯製造商
和 Products
組件類似,開啟 Manufacturers
使用 el-table
替換掉原本的表單的 <template>
部分
<template>
<div class="manufacturers">
<el-table class="table" :data="manufacturers">
<el-table-column prop="name" label="製造商" width="180"></el-table-column>
<el-table-column label="管理" width="200">
<template slot-scope="scope">
<el-button class="modify" type="text" size="small">
<router-link :to="'/admin/manufacturers/edit/' + scope.row._id">修改</router-link>
</el-button>
<el-button
class="remove"
@click="removeManufacturer(scope.row._id), deleteRow(scope.$index, products)"
type="text"
size="small"
>刪除</el-button>
</template>
</el-table-column>
</el-table>
</div>
</template>
接著重構 NewManufacturers
組件,一樣將 computed 的 model
換到 data 屬性中
<template>
<manufacturer-form @save-manufacturer="addManufacturer" :model="model"></manufacturer-form>
</template>
<script>
import ManufacturerForm from "@/components/ManufacturerForm.vue";
export default {
data() {
return {
model: {}
};
},
methods: {
addManufacturer(model) {
this.$store.dispatch("addManufacturer", {
manufacturer: model
});
}
},
components: {
"manufacturer-form": ManufacturerForm
}
};
</script>
緊接著重構 ManufacturerForm
,和 ProductForm
組件類似,將 <template>
區塊替換成組件庫樣式
<template>
<div class="manufacturerInfo">
<el-form class="form" ref="form" :model="model" label-width="180px">
<el-form-item label="Name">
<el-input v-model="model.name"></el-input>
</el-form-item>
<el-form-item>
<el-button v-if="isEditing" type="primary" @click="onSubmit">Update Manufacturer</el-button>
<el-button v-else @click="onSubmit">Add Manufacturer</el-button>
</el-form-item>
</el-form>
</div>
</template>
重構購物車
最後!重構 Cart
組件,和 ProductList
類似,兩者都用了 ProductItem
組件。一樣那句話:將 <template>
區塊替換成組件庫樣式
<template>
<div>
<div class="title">
<h1>{{msg}}</h1>
</div>
<product-item :products="cart"></product-item>
</div>
</template>
在這一節當中主要就是使用 element-ui
組件庫將畫面做得比較酷炫。但也造成一些功能癱瘓,當下一定很緊張,但不要緊!我們馬上就要來修復功能了!
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