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Vue elementUI表单嵌套表格并对每行进行校验的示例分析

发布时间:2022-01-05 15:04:43 来源:亿速云 阅读:213 作者:小新 栏目:开发技术

这篇文章主要介绍Vue elementUI表单嵌套表格并对每行进行校验的示例分析,文中介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们一定要看完!

效果展示

先看看这是不是需要的效果^_^

Vue elementUI表单嵌套表格并对每行进行校验的示例分析

如图,ElementUI 表单里嵌套了表格,表格内每行能进行【保存】【新增】【编辑】【删除】【重置】等操作,同时可以对每行的某些字段进行校验(而不是整个表单校验!),这种需求很常见,所以记录下来。

代码链接

gitee地址

关键代码

表格数据

// 数据格式必须是【对象嵌套数组】,【form】绑定表单,【list】绑定表格
form: {
  // 表格数据
  list: [
      { id: 1, name: '小叶', age: '12', phone: '123456', show: true },
      { id: 2, name: '小李', age: '23', phone: '123457', show: true },
      { id: 3, name: '小林', age: '12', phone: '123458', show: true }
  ]
},

组件嵌套

  1. 添加字段校验的时候,格式必须写成这样的 :prop="'list.' + scope.$index + '.name'"
    这是 elementui 规定的格式,渲染后的结果为 list.1.name

  2. 每个字段要动态绑定表单的 rules 属性

  3. 如果不是以上的格式,会出错!!!

// 表单必须嵌套在表格的外面,表单必须绑定【rules】【ref】属性
<el-form :model="form" :rules="rules" ref="form">
   <el-table :data="form.list">
       <el-table-column prop="name" label="姓名">
           <template scope="scope">
              // 每个字段动态的绑定表单的【prop】【rules】属性
              <el-form-item :prop="'list.' + scope.$index + '.name'"                                              :rules="rules.name">
                    <el-input size="mini" v-model="scope.row.name" placeholder="请输入"                             clearable></el-input>
               </el-form-item>
           </template>
       </el-table-column>
  </el-table>
</el-form>

校验方法

  1. 表单的字段对象存在于 this.$refs['form'].fields 中,并且字段对象具有 prop【datas.1.name】 属性和 validateField 方法【验证 datas.1.name 能否通过校验】

  2. 但是 validateField 方法需要手动创建来验证能否通过校验

  3. 必须创建,否则会出错!!!

// 表单校验方法
// 【form】是需要校验的表单,就是表单中【ref】绑定的字段
// 【index】是需要传入的行数,字段【scope.$index】
validateField(form, index) {
     let result = true;
     for (let item of this.$refs[form].fields) {
         if(item.prop.split(".")[1] == index){
             this.$refs[form].validateField(item.prop, err => {
                 if(err !="") {
                     result = false;
                 }
             });
         }
         if(!result) break;
     }
     return result;
}

重置方法

// 对【需要校验】的表单字段进行重置
// 参数同校验方法,如果是全部重置
reset(form, index) {
    this.$refs[form].fields.forEach(item => {
        if(item.prop.split(".")[1] == index){
            item.resetField();
        }
    })
}
// 如果需要全部重置可以直接质控表单中字段
// 【row】是每行传入的数据
resetRow(row) {
    row.name = "";
    row.age = "";
    row.phone = "";
}

完整代码

因为用的是在线链接,网络不稳定时页面不一定能加载出来,使用时可以更换成本地的!

<!DOCTYPE html>
<html lang="zh">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>vue表单嵌套表格逐行验证</title>
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
    <!-- 引入样式 -->
    <link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css" rel="external nofollow" >
    <!-- 引入组件库 -->
    <script src="https://unpkg.com/element-ui/lib/index.js"></script>
</head>

<body>
    <div id="app">
        <!-- 页面组件 -->
        <h3 >vue表单嵌套表格逐行验证</h3>
        <el-form :model="form" :rules="rules" ref="form" :inline="true"
            >
            <el-table border :data="form.list">
                <el-table-column align="center" prop="id" label="序号" width="55">
                </el-table-column>
                <el-table-column align="center" prop="name" label="姓名">
                    <template scope="scope">
                        <el-form-item :prop="'list.' + scope.$index + '.name'" :rules="rules.name"
                            v-if="scope.row.show">
                            <el-input size="mini" v-model="scope.row.name" placeholder="请输入" clearable>
                            </el-input>
                        </el-form-item>
                        <div v-if="!scope.row.show">{{scope.row.name}}</div>
                    </template>
                </el-table-column>
                <el-table-column align="center" prop="age" label="年龄">
                    <template scope="scope">
                        <el-form-item :prop="'list.' + scope.$index + '.age'" :rules="rules.age" v-if="scope.row.show">
                            <el-input size="mini" v-model="scope.row.age" placeholder="请输入" clearable>
                            </el-input>
                        </el-form-item>
                        <div v-if="!scope.row.show">{{scope.row.age}}</div>
                    </template>
                </el-table-column>
                <el-table-column align="center" prop="phone" label="联系方式">
                    <template scope="scope">
                        <el-form-item :prop="'list.' + scope.$index + '.phone'" :rules="rules.phone"
                            v-if="scope.row.show">
                            <!-- <el-form-item v-if="scope.row.show"> -->
                            <el-input size="mini" v-model="scope.row.phone" placeholder="请输入" clearable>
                            </el-input>
                        </el-form-item>
                        <div v-if="!scope.row.show">{{scope.row.phone}}</div>
                    </template>
                </el-table-column>
                <el-table-column label="操作" align="center" width="290" fixed="right">
                    <template slot-scope="scope">
                        <el-button type="text"  @click="save(scope.$index, scope.row)"
                            v-if="scope.row.show" icon="el-icon-check">保存
                        </el-button>
                        <el-button type="text"  @click="edit(scope.row)" v-if="!scope.row.show"
                            icon="el-icon-edit">编辑
                        </el-button>
                        <el-button type="text"  v-if="scope.$index+1 == listLength"
                            @click="addRow(scope.$index, scope.row)" icon="el-icon-plus">新增
                        </el-button>
                        <el-button type="text"  @click="delRow(scope.$index, scope.row)"
                            icon="el-icon-delete">删除
                        </el-button>
                        <el-button type="text"  @click="reset('form', scope.$index)"
                            v-if="scope.row.show" icon="el-icon-refresh">重置
                        </el-button>
                        <!-- <el-button type="text"  @click="resetRow(scope.row)"
                            v-if="scope.row.show" icon="el-icon-refresh">重置
                        </el-button> -->
                    </template>
                </el-table-column>
            </el-table>
        </el-form>
    </div>
</body>

</html>
<script>
    var app = new Vue({
        el: '#app',
        data() {
            return {
                // 表单数据
                form: {
                    // 表格数据
                    list: [{ id: 1, name: '', age: '', phone: '', show: true }]
                },
                // 表单验证规则
                rules: {
                    name: [{ required: true, message: '请输入姓名!', trigger: 'blur' }],
                    age: [{ required: true, message: '请输入年龄!', trigger: 'blur' }],
                    phone: [{ required: true, message: '请输入联系方式!', trigger: 'blur' }],
                },
                // 表格长度默认为 1
                listLength: 1,
            }
        },

        methods: {
            // 校验
            validateField(form, index) {
                let result = true;
                for (let item of this.$refs[form].fields) {
                    if (item.prop.split(".")[1] == index) {
                        this.$refs[form].validateField(item.prop, err => {
                            if (err != "") {
                                result = false;
                            }
                        });
                    }
                    if (!result) break;
                }
                return result;
            },

            // 重置【只针对校验字段】
            reset(form, index) {
                this.$refs[form].fields.forEach(item => {
                    if (item.prop.split(".")[1] == index) {
                        item.resetField();
                    }
                })
            },

            // 重置【全部】
            resetRow(row) {
                row.name = "";
                row.age = "";
                row.phone = "";
            },

            // 保存
            save(index, row) {
                if (!this.validateField('form', index)) return;
                row.show = false;
            },

            // 新增
            addRow(index, row) {
                if (!this.validateField('form', index)) return;
                this.form.list.push({
                    id: index + 2,
                    name: '',
                    age: '',
                    phone: '',
                    show: true
                });
                this.listLength = this.form.list.length;
            },

            // 编辑
            edit(row) {
                row.show = true;
            },

            // 删除
            delRow(index, row) {
                if (this.form.list.length > 1) {
                    this.form.list.splice(index, 1);
                    this.listLength = this.form.list.length;
                } else {
                    this.form.list = [{
                        id: 1,
                        name: '',
                        age: '',
                        phone: '',
                        show: true
                    }];
                }
            },
        }
    })
</script>

以上是“Vue elementUI表单嵌套表格并对每行进行校验的示例分析”这篇文章的所有内容,感谢各位的阅读!希望分享的内容对大家有帮助,更多相关知识,欢迎关注亿速云行业资讯频道!

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