• 图书管理增删改查&父子调用&前后端


    1.图书管理系统后端接口

    1.1 books/models.py 中设置表

    from django.db import models
    
    
    class Books(models.Model):
        btitle = models.CharField(max_length=20)
        bpub_date = models.DateField()
        bread = models.IntegerField()
        bcomment = models.IntegerField()
        is_delete = models.BooleanField(default=False)
    models

    1.2 urls.py 中设置路由

    from django.urls import path
    from . import views
    urlpatterns = [
        path('book/',views.BooksView.as_view()),
    ]
    url

    1.3 book/views.py 视图函数

    from django.http import JsonResponse
    from django.shortcuts import render
    import json
    from .models import *
    # Create your views here.
    from django.views import View
    
    
    class BooksView(View):
        def get(self, request):
            books = Books.objects.filter(is_delete=False)
            book_list = books.values('id','btitle','bpub_date','bread','bcomment')
            book_list = list(book_list)
            data = {
            "code": 0,
            "msg": "success",
            "books": book_list
            }
            return JsonResponse(data)
    
        def post(self, request):
            body_json = request.body.decode()
            body_dict = json.loads(body_json)
            btitle = body_dict.get('btitle')
            bpub_date = body_dict.get('bpub_date')
            bread = body_dict.get('bread')
            bcomment = body_dict.get('bcomment')
            book = Books(btitle=btitle, bpub_date=bpub_date, bread=bread,
            bcomment=bcomment)
            book.save()
            return JsonResponse({"code": 0, "msg": "success"})
    
        def put(self, request):
            body_json = request.body.decode()
            body_dict = json.loads(body_json)
            id = body_dict.get('id')
            btitle = body_dict.get('btitle')
            bpub_date = body_dict.get('bpub_date')
            bread = body_dict.get('bread')
            bcomment = body_dict.get('bcomment')
            book = Books.objects.get(id=id)
            book.btitle = btitle
            book.bpub_date = bpub_date
            book.bread = bread
            book.bcomment = bcomment
            book.save()
            return JsonResponse({"code": 0, "msg": "success"})
    
        def delete(self, request):
            body_json = request.body.decode()
            body_dict = json.loads(body_json)
            id = body_dict.get('id')
            book = Books.objects.get(id=id)
            book.is_delete = True
            book.save()
            return JsonResponse({"code": 0, "msg": "success"})
    views.py

    2.测试接口

    2.1 测试获取所有图书接口

    http://127.0.0.1:8000/books/book/

    返回结果

    {
    "code": 0,
    "msg": "success",
    "books": [
    {
    "id": 4,
    "btitle": "抗日神剧",
    "bpub_date": "2020-08-11",
    "bread": 1234,
    "bcomment": 779
    },
    {
    "id": 5,
    "btitle": "qwe",
    "bpub_date": "2020-09-09",
    "bread": 123,
    "bcomment": 5555
    },
    {
    "id": 11,
    "btitle": "三重门",
    "bpub_date": "2020-02-12",
    "bread": 100,
    "bcomment": 0
    }
    ]
    }
    结果

    2.2 测试创建图书接口

    http://127.0.0.1:8000/books/book/

    postman测试提交数据

    { "btitle":"红楼梦",

     "bpub_date":"2018-02-04",

     "bread":100,

     "bcomment":0 }

    2.3 测试修改图书接口

     2.4 测试删除数据接口

    1.图书管理页面

    1.1 http/apis.js 添加后端请求路由

    import { get, post, put, del } from './index'
    // 书籍管理接口
    export const getBookList = (params, headers) => get("/books/book/", params,
    headers)
    export const addBook = (params, headers) => post("/books/book/", params, headers)
    export const editBook = (params, headers) => put("/books/book/", params, headers)
    export const delBook = (params, headers) => del("/books/book/", params, headers)
    http/apis.js 添加后端请求路由

    1.2 router/index.js 添加路由

    import Books from '@/views/books/Books'
    export default new Router({
    routes: [
    { path: '/', name: 'Books', component: Books }, // 图书增删改查
    案例
    ]
    })
    router/index.js 添加路由

    1.3 srcviewsooksBooks.vue 父组件

    <template>
        <div>
            <h1>图书管理系统</h1>
            <div style="margin: 30px;">
                <button @click="addNew">新增图书</button>
                <BookEdit
                    v-show='dialogVisible'
                    :visible.sync='dialogVisible'
                    :data='editData'
                    @save='save'
                ></BookEdit>
        </div>
        
        <div>
            <table style='margin: auto; border: solid 1px black;'>
                <tr>
                    <th>图书编号</th>
                    <th>图书名字</th>
                    <th>出版时间</th>
                    <th>阅读数</th>
                    <th>评论数</th>
                    <th>操作</th>
                </tr>
                <tr
                    v-for="(book, index) in books"
                    :key="book.id"
                >
                    <td>{{book.id}}</td>
                    <td>{{book.btitle}}</td>
                    <td>{{book.bpub_date}}</td>
                    <td>{{book.bread}}</td>
                    <td>{{book.bcomment}}</td>
                    <td>
                        <button @click="edit(index)">修改</button>
                        <button @click="del(index)">删除</button>
                    </td>
                </tr>
            </table>
        </div>
    </div>
    </template>
    
    <script>
    import { getBookList, addBook, editBook, delBook } from '@/http/apis'
    import BookEdit from '@/components/BookEdit'
    export default {
        components: {
            BookEdit
        },
        data() {
            return {
                dialogVisible: false,
                books: [
                    { id: 3, btitle: "...", bpub_date: "2020-08-11", bread: 100, bcomment: 50
    }
                ],
                editData: { // 编辑的内容
                    btitle: "",
                    bpub_date: "",
                    bread: 0,
                    bcomment: 0
            }
        }
    },
    
    methods: {
        // 1.点击新增图书时初始化数据
        addNew() {
            this.editData = { // 初始化 编辑内容
                btitle: "",
                bpub_date: "",
                bread: 100,
                bcomment: 0
            }
            this.dialogVisible = true // 显示弹框
        },
        // 2.获取图书列表
        get() {
            getBookList().then((data) => {
                // console.log(data)
                // books: [{btitle: "西游记", bpub_date: "2020-08-11", bread: 100,bcomment: 50}]
                this.books = data.books
            })
        },
        // 3.修改或者添加图书
        save() {
            // 根据editData中的id判断是更新还是新增
            debugger
            console.log(this.editData)
            if (this.editData.id) {
                    // 如果有id, 修改图书
                // 修改请求
                let params = this.editData
                editBook(params).then((res)=>{
                    console.log(res)
                    this.get()
                })
            } else {
            // 增加图书
                addBook(this.editData).then((res) => {
                    this.get()
                })
            }
        },
            // 点击修改弹出修改页面
            edit(index) {
                this.editData = JSON.parse(JSON.stringify(this.books[index])) // 复制this.books[index] 的数据
                // this.editData = this.books[index] //
                this.dialogVisible = true
            },
            
            // 删除
            del(index) {
                let params = {
                    id: this.books[index].id
                }
                delBook(params).then((res)=>{
                    console.log(res)
                    this.get()
                })
            }
        },
        created() {
            this.get()
        }
    }
    </script>
    <style>
    table tr td {
         150px;
        border: solid 1px black;
    }
    </style>
    srcviewsooksBooks.vue 父组件

    1.4 srccomponentsBookEdit.vue 子组件

    <template>
        <div>
            <el-dialog
                title="新增图书"
                :visible="visible"
            >
                <div><span>图书名称:</span>
                    <el-input
                        class='elinput'
                        v-model="data.btitle"
                    >
                    </el-input>
                </div>
                <div><span>发布日期:</span>
                    <el-input
                        class='elinput'
                        v-model="data.bpub_date"
                    ></el-input>
                </div>
                <div><span>阅读量:</span>
                    <el-input
                        class='elinput'
                        v-model="data.bread"
                    ></el-input>
                </div>
                <div><span>评论量:</span>
                    <el-input
                    class='elinput'
                    v-model="data.bcomment"
                ></el-input>
            </div>
            
            <el-button @click="cancel">取 消</el-button>
            <el-button
                type="primary"
                    @click="addBook"
                >确 定</el-button>
            </el-dialog>
        </div>
    </template>
    <script>
    // import { addbook } from '@/http/apis'
    export default {
        props: ['data', 'visible'],
        data() {
            return {
            }
        },
        methods: {
            addBook() {
                this.$emit('update:visible', false)
                this.$emit('save')
            },
            cancel() {
                this.$emit('update:visible', false)
            }
        },
        mounted() {
        }
    }
    </script>
    <style>
    .elinput {
         220px;
        height: 40px;
    }
    </style>
     
    srccomponentsBookEdit.vue 子组件

    1.5 src/mian.js 引入ElementUI

    // The Vue build version to load with the `import` command
    // (runtime-only or standalone) has been set in webpack.base.conf with an alias.
    import Vue from 'vue'
    import App from './App'
    import router from './router'
    
    Vue.config.productionTip = false
    
    
    // 使用 elementui
    // npm i element-ui -S 安装到当前项目
    import ElementUI from 'element-ui'
    import 'element-ui/lib/theme-chalk/index.css'
    Vue.use(ElementUI)
    
    
    /* eslint-disable no-new */
    new Vue({
      el: '#app',
      router,
      components: { App },
      template: '<App/>'
    })
    src/mian.js 引入ElementUI

     

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  • 原文地址:https://www.cnblogs.com/gaodenghan/p/13900194.html
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