Vue2.0 + Element-UI + WebAPI实践：简易个人记账系统

最近正在学习Vue2.0相关知识，正好近期饿了么桌面端组件Element-UI发布，便动手做了一款简易个人记账系统，以达到实践及巩固目的。

1.开发环境

Win10 + VS2015 + Sqlserver2008R2 + WebAPI + Dapper + Vue2.0 + Element-UI

2.项目解决方案概览

简单介绍下，Account是WebAPI项目，承载前端请求；Account.BLL、Account.DAL、Account.Entity不废话；Account.Common是对Dapper及Log4net等简单封装；KnockoutFE是较早时候弄的一个基于Bootstrap + Knockout的前端；VueFE是主角，待会儿重点介绍。

Account工程截图：

Account.Common工程截图：

VueFE工程截图：

3.前端实现

初始界面：

1.左边导航部分

使用el-menu + vue-router实现：

<div id="sideBar">
            <!--<ul>
                <router-link to="/manifests" tag="li">日消费明细</router-link>
                <router-link to="/daily" tag="li">日消费清单</router-link>
                <router-link to="/monthly" tag="li">月消费清单</router-link>
                <router-link to="/yearly" tag="li">年消费清单</router-link>
            </ul>-->
            <el-menu default-active="manifests" theme="dark" v-bind:router="true">
                <el-menu-item index="manifests">日消费明细</el-menu-item>
                <el-menu-item index="daily">日消费清单</el-menu-item>
                <el-menu-item index="monthly">月消费清单</el-menu-item>
                <el-menu-item index="yearly">年消费清单</el-menu-item>
            </el-menu>
        </div>

　　注释掉部分是最开始时候没有采用el-menu组件导航，而是使用了vue-router自己的路由导航。

路由部分对应JS代码：

const router = new VueRouter({
    routes: [
        { name: "manifests", path: "/manifests", component: Manifests },
        { name: "daily", path: "/daily", component: Daily },
        { name: "monthly", path: "/monthly", component: Monthly },
        { name: "yearly", path: "/yearly", component: Yearly }
    ]
});

　　其中，Manifests、Daily、Monthly、Yearly分别代表日消费明细、日消费清单、月消费清单、年消费清单自定义Vue组件。

2.具体内容页组件实现

这里以日消费明细组件为例来详细介绍，里边囊括了CRUD。

组件完整定义：

/// <reference path="index.js" />
/// <reference path="vue.js" />
/// <reference path="vue-resource.js" />
/// <reference path="util.js" />

const Manifests = {
    template: "#manifests",
    created: function () {
        this.fetchData();
    },
    data: function () {
        let currentDate = new Date();
        let costValidator = (rule, value, callback) => {
            if (!/^[0-9]+(.[0-9]{2})?$/.test(value)) {
                callback(new Error("请输入合法金额"));
            }
            else {
                callback();
            }
        };
        return {
            start: new Date(currentDate.getFullYear(), currentDate.getMonth() - 3, 1),
            end: new Date(),
            manifests: [],
            title: "",
            manifest: {},
            showOperateManifest: false,
            isAdd: false,
            rules: {
                Date: [
                    { type: "date", required: true, message: "请选择消费日期", trigger: "change" }
                ],
                Cost: [
                    { required: true, message: "请填写消费金额", trigger: "blur" },
                    { validator: costValidator, trigger: "change" }
                ],
                Remark: [
                    { required: true, message: "请填写消费明细", trigger: "blur" }
                ]
            },
            pageIndex: 0,
            pageSize: 10,
            total: 0,
            pageSizes: [10, 20, 50, 100]
        }
    },
    methods: {
        fetchData: function () {
            this.manifests = [];
            this.$http.get("http://localhost:1500/api/Manifests/paged", {
                params: {
                    start: this.start.format("yyyy-MM-dd"),
                    end: this.end.format("yyyy-MM-dd"),
                    pageIndex: this.pageIndex,
                    pageSize: this.pageSize
                }
            })
                      .then(response => {
                          this.total = response.body.count;
                          this.manifests = response.body.data;
                      })
                      .catch(response => this.$alert(response.body.Message, "日消费明细", { type: "error" }));
        },
        add: function () {
            this.title = "添加消费明细";
            this.manifest = {
                ID: Guid.NewGuid().ToString("D"),
                Date: new Date(),
                Cost: "",
                Remark: ""
            };
            this.isAdd = true;
            this.showOperateManifest = true;
        },
        save: function () {
            this.$refs.formManifest.validate(valid => {
                if (valid) {
                    let operateManifest = JSON.parse(JSON.stringify(this.manifest));
                    operateManifest.Date = this.manifest.Date.format("yyyy-MM-dd");
                    if (this.isAdd) {
                        this.$http.post("http://localhost:1500/api/Manifests", operateManifest)
                        .then(() => {
                            this.manifests.push(operateManifest);
                            this.showOperateManifest = false;
                            bus.$emit("manifestChanged");
                            this.$message({
                                message: "添加成功",
                                type: "success"
                            });
                        })
                        .catch(err => {
                            //console.log(err);
                            this.$alert(err.body.Message, "添加日消费明细", { type: "error" });
                        });
                    }
                    else {
                        this.$http.put("http://localhost:1500/api/Manifests", operateManifest)
                        .then(response => {
                            let updatedManifest = this.manifests.find(x => x.ID == this.manifest.ID);
                            updatedManifest.Date = operateManifest.Date;
                            updatedManifest.Cost = operateManifest.Cost;
                            updatedManifest.Remark = operateManifest.Remark;
                            this.showOperateManifest = false;
                            bus.$emit("manifestChanged");
                            this.$message({
                                message: "修改成功",
                                type: "success"
                            });
                        })
                        .catch(err => {
                            //console.log(err);
                            this.$alert(err.body.Message, "修改消费明细", { type: "error" });
                        });
                    }
                }
                else {
                    return false;
                }
            });
        },
        cancel: function () {
            this.manifest = {};
            this.showOperateManifest = false;
        },
        edit: function (ID) {
            let currentManifest = this.manifests.find(x => x.ID == ID);
            this.manifest = JSON.parse(JSON.stringify(currentManifest));
            this.manifest.Date = new Date(this.manifest.Date);
            this.title = "编辑消费明细";
            this.isAdd = false;
            this.showOperateManifest = true;
        },
        del: function (ID) {
            this.$confirm("是否删除？", "警告", { type: "warning" })
            .then(() => {
                this.$http.delete("http://localhost:1500/api/Manifests/" + ID)
                .then(response => {
                    let index = this.manifests.findIndex(x => x.ID == ID);
                    this.manifests.splice(index, 1);
                    bus.$emit("manifestChanged");
                    this.$message({
                        message: "删除成功",
                        type: "success"
                    });
                })
                .catch(err => {
                    this.$alert(err.body.Message, "删除消费明细", { type: "error" });
                    //console.log(err);
                });
            });
        },
        dialogClosed: function () {
            this.$refs.formManifest.resetFields();
        },
        sizeChange: function (pageSize) {
            this.pageSize = pageSize;
            this.fetchData();
        },
        pageIndexChange: function (pageIndex) {
            this.pageIndex = pageIndex;
            this.fetchData();
        }
    }
}

　　组件对应的模板定义：

<script type="text/x-template" id="manifests">
        <div>
            <div>
                开始日期：
                <el-date-picker v-model="start" type="date" placeholder="选择日期"></el-date-picker>
                结束日期：
                <el-date-picker v-model="end" type="date" placeholder="选择日期"></el-date-picker>
                <el-button type="primary" size="small" v-on:click="fetchData" icon="search">查  询</el-button>
                <el-button type="primary" size="small" v-on:click="add" icon="plus">添  加</el-button>
            </div>
            <div class="table">
                <el-table v-bind:data="manifests" highlight-current-row border height="500">
                    <el-table-column prop="Date" label="日期"></el-table-column>
                    <el-table-column prop="Cost" label="金额"></el-table-column>
                    <el-table-column prop="Remark" label="备注"></el-table-column>
                    <el-table-column inline-template label="操作">
                        <span>
                            <el-button type="text" size="small" v-on:click="edit(row.ID)" icon="edit">编 辑</el-button>
                            <el-button type="text" size="small" v-on:click="del(row.ID)" icon="delete">删 除</el-button>
                        </span>
                    </el-table-column>
                </el-table>
            </div>
            <div class="pager">
                <el-pagination v-bind:current-Page="pageIndex" v-bind:page-size="pageSize" :total="total"
                               layout="total,sizes,prev,pager,next,jumper" v-bind:page-sizes="pageSizes"
                               v-on:size-change="sizeChange" v-on:current-change="pageIndexChange">

                </el-pagination>
            </div>
            <div>
                <el-dialog v-bind:title="title" v-bind:close-on-click-modal="false" v-model="showOperateManifest" v-on:close="dialogClosed">
                    <el-form v-bind:model="manifest" v-bind:rules="rules" ref="formManifest" label-position="left" label-width="80px">
                        <el-form-item label="日  期" prop="Date">
                            <el-date-picker v-model="manifest.Date"></el-date-picker>
                        </el-form-item>
                        <el-form-item label="金  额" prop="Cost">
                            <el-input v-model="manifest.Cost"></el-input>
                        </el-form-item>
                        <el-form-item label="备  注" prop="Remark">
                            <el-input v-model="manifest.Remark"></el-input>
                        </el-form-item>
                        <el-form-item>
                            <el-button type="primary" v-on:click="save">确 定</el-button>
                            <el-button type="primary" v-on:click="cancel">取 消</el-button>
                        </el-form-item>
                    </el-form>
                </el-dialog>
            </div>
        </div>
    </script>

查询部分　：

<div>
                开始日期：
                <el-date-picker v-model="start" type="date" placeholder="选择日期"></el-date-picker>
                结束日期：
                <el-date-picker v-model="end" type="date" placeholder="选择日期"></el-date-picker>
                <el-button type="primary" size="small" v-on:click="fetchData" icon="search">查  询</el-button>
                <el-button type="primary" size="small" v-on:click="add" icon="plus">添  加</el-button>
            </div>

这里关于事件处理绑定，官网推荐简写的@click，但这里没有采用，而是使用了完整绑定V-on：click，因为考虑到以后可能会和Razor整合，@符可能会冲突

查询JS：

fetchData: function () {
            this.manifests = [];
            this.$http.get("http://localhost:1500/api/Manifests/paged", {
                params: {
                    start: this.start.format("yyyy-MM-dd"),
                    end: this.end.format("yyyy-MM-dd"),
                    pageIndex: this.pageIndex,
                    pageSize: this.pageSize
                }
            })
                      .then(response => {
                          this.total = response.body.count;
                          this.manifests = response.body.data;
                      })
                      .catch(response => this.$alert(response.body.Message, "日消费明细", { type: "error" }));
        }

API请求采用了Vue开源社区的vue-resource，简单轻便，再搭配ES6 Promise，写起来很顺手。

添加/编辑的实现：

这里使用了el-dialog嵌套el-form

<el-dialog v-bind:title="title" v-bind:close-on-click-modal="false" v-model="showOperateManifest" v-on:close="dialogClosed">
                    <el-form v-bind:model="manifest" v-bind:rules="rules" ref="formManifest" label-position="left" label-width="80px">
                        <el-form-item label="日  期" prop="Date">
                            <el-date-picker v-model="manifest.Date"></el-date-picker>
                        </el-form-item>
                        <el-form-item label="金  额" prop="Cost">
                            <el-input v-model="manifest.Cost"></el-input>
                        </el-form-item>
                        <el-form-item label="备  注" prop="Remark">
                            <el-input v-model="manifest.Remark"></el-input>
                        </el-form-item>
                        <el-form-item>
                            <el-button type="primary" v-on:click="save">确 定</el-button>
                            <el-button type="primary" v-on:click="cancel">取 消</el-button>
                        </el-form-item>
                    </el-form>
                </el-dialog>

save: function () {
            this.$refs.formManifest.validate(valid => {
                if (valid) {
                    let operateManifest = JSON.parse(JSON.stringify(this.manifest));
                    operateManifest.Date = this.manifest.Date.format("yyyy-MM-dd");
                    if (this.isAdd) {
                        this.$http.post("http://localhost:1500/api/Manifests", operateManifest)
                        .then(() => {
                            this.manifests.push(operateManifest);
                            this.showOperateManifest = false;
                            bus.$emit("manifestChanged");
                            this.$message({
                                message: "添加成功",
                                type: "success"
                            });
                        })
                        .catch(err => {
                            //console.log(err);
                            this.$alert(err.body.Message, "添加日消费明细", { type: "error" });
                        });
                    }
                    else {
                        this.$http.put("http://localhost:1500/api/Manifests", operateManifest)
                        .then(response => {
                            let updatedManifest = this.manifests.find(x => x.ID == this.manifest.ID);
                            updatedManifest.Date = operateManifest.Date;
                            updatedManifest.Cost = operateManifest.Cost;
                            updatedManifest.Remark = operateManifest.Remark;
                            this.showOperateManifest = false;
                            bus.$emit("manifestChanged");
                            this.$message({
                                message: "修改成功",
                                type: "success"
                            });
                        })
                        .catch(err => {
                            //console.log(err);
                            this.$alert(err.body.Message, "修改消费明细", { type: "error" });
                        });
                    }
                }
                else {
                    return false;
                }
            });
        }

其中包括了表单验证部分，也是采用Element-UI文档中介绍的验证方式，目前有些验证支持不是很好，比如number，可能是哪里用的不对吧，所以上边对金额部分采取了正则自定义验证。

底部分页部分：

<el-pagination v-bind:current-Page="pageIndex" v-bind:page-size="pageSize" :total="total"
                               layout="total,sizes,prev,pager,next,jumper" v-bind:page-sizes="pageSizes"
                               v-on:size-change="sizeChange" v-on:current-change="pageIndexChange">

                </el-pagination>

　　如上所示，直接使用了饿了么分页组件，设置几个属性， 再绑定几个JS属性、分页事件处理程序即可，十分方便

Vue Date对象中分页相关的属性：

页索引及分页大小变动事件处理：

 sizeChange: function (pageSize) {
            this.pageSize = pageSize;
            this.fetchData();
        },
        pageIndexChange: function (pageIndex) {
            this.pageIndex = pageIndex;
            this.fetchData();
        }

　　没什么特别， 根据最新页索引或页尺寸大小从新拉取一遍数据就行了。

4.源码

https://github.com/KINGGUOKUN/Account/tree/master/AccountWeb