SPA项目开发之CRUD+表单验证

1. 表单验证
Form组件提供了表单验证的功能，只需要通过 rules 属性传入约定的验证规则，
并将Form-Item的prop属性设置为需校验的字段名即可

<el-form-item label="活动名称" prop="name">
<el-form :model="ruleForm" :rules="rules" ref="ruleForm"

注1：有多个表单，怎么在提交进行区分？
我们在rules这里写了对表单的验证规则，但是我们如何在methods里进行指定的表单进行认证，
所以我们一开始就在el-form里写了 ref="ruleForm"，我们在methods里就可以用

<template>
    <div>
         <!-- 搜索筛选 -->
    <el-form :inline="true" :model="formInline" class="user-search">
      <el-form-item label="搜索：">
        <el-input size="small" v-model="formInline.title" placeholder="输入文章标题"></el-input>
      </el-form-item>
      <el-form-item>
        <el-button size="small" type="primary" icon="el-icon-search" @click="search">搜索</el-button>
        <el-button size="small" type="primary" icon="el-icon-plus" @click="handleAdd()">添加</el-button>
      </el-form-item>
    </el-form>
         <!--列表-->
    <el-table size="small" :data="listData" border element-loading-text="拼命加载中" style=" 100%;">
      <el-table-column align="center" type="selection" min-width="1">
      </el-table-column>
      <el-table-column sortable prop="id" label="文章ID" min-width="1">
      </el-table-column>
      <el-table-column sortable prop="title" label="文章标题" min-width="2">
      </el-table-column>
      <el-table-column sortable prop="body" label="文章标题" min-width="4">
      </el-table-column>
      <el-table-column align="center" label="操作" min-width="2">
        <template slot-scope="scope">
          <el-button size="mini" @click="handleEdit(scope.$index, scope.row)">编辑</el-button>
          <el-button size="mini" type="danger" @click="deleteUser(scope.$index, scope.row)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <!-- 分页条 -->
        <el-pagination style="margin-top: 20px;" @size-change="handleSizeChange" @current-change="handleCurrentChange"
        :current-page="formInline.page" :page-sizes="[10, 20, 30, 50]" :page-size="100" layout="total, sizes, prev, pager, next, jumper"
        :total="total">
        </el-pagination>

          <!-- 编辑界面 -->
        <el-dialog :title="title" :visible.sync="editFormVisible" width="30%" @click="closeDialog">
              <el-form label-width="120px" :model="editForm" :rules="rules" ref="editForm">
                <el-form-item label="文章标题" prop="title">
                  <el-input size="small" v-model="editForm.title" auto-complete="off" placeholder="请输入文章标题"></el-input>
            </el-form-item>
            <el-form-item label="文章内容" prop="body">
                 <el-input size="small" v-model="editForm.body" auto-complete="off" placeholder="请输入文章内容"></el-input>
                </el-form-item>
              </el-form>
              <div slot="footer" class="dialog-footer">
                <el-button size="small" @click="closeDialog">取消</el-button>
                <el-button size="small" type="primary" class="title" @click="submitForm('editForm')">保存</el-button>
              </div>
        </el-dialog>
    </div>
</template>

<script>
    export default{
        data(){
            return{
                listData:[],
                formInline:{
                    page:1,
                    rows:10,
                    title:''
                },
                total:0,
                editForm:{
                    id:0,
                    title:'',
                    body:''
                },
                editFormVisible:false,
                title:'',
                rules: {
                      title:[{
                             required: true,
                            message: '请输入文章标题',
                            trigger: 'blur' 
                          },
                           { 
                            min: 3,
                            max: 5,
                            message: '文章标题长度在 3 到 5 个字符',
                            trigger: 'blur' 
                        }
                      ],
                      body:[{
                          required: true,
                        message: '请输入文章内容',
                        trigger: 'change' 
                    }]
                }
            };
        },
                
        methods:{
            doSearch(params){
                let url = this.axios.urls.SYSTEM_ARTICLE_LIST;
            this.axios.post(url, params).then((response)=>{
                console.log(response);
                this.listData=response.data.result;
                this.total=response.data.pageBean.total;
            }).catch(function(error) {
                console.log(error);
            });
        },
        handleSizeChange(rows) {
            console.log('页大小发生了改变：'+rows)
            this.formInline.page = 1;
            this.formInline.rows = rows;
            this.search();
        },
        handleCurrentChange(page) {
            console.log('当前页发生了改变：'+page)
            this.formInline.page = page;
             this.search();
        },
        search(){
            this.doSearch(this.formInline);
        },
        closeDialog(){
            
        },
        submitForm(formName){
            this.$refs[formName].validate((valid) => {
                   if (valid) {
                       let url;
                    if(this.editForm.id ==0){
                           url = this.axios.urls.SYSTEM_ARTICLE_ADD;
                    }else{
                           url = this.axios.urls.SYSTEM_ARTICLE_EDIT;
                    }
                    this.axios.post(url, this.editForm).then((response)=>{
                        console.log(response);
                        this.clearData();
                        this.search();
                    }).catch(function(error) {
                        console.log(error);
                    });
                 } else {
                    console.log('error submit!!');
                    return false;
                 }
            });
        },
        handleAdd(){
            this.clearData();
            this.editFormVisible = true;
            this.title='新增文章';
        },
        handleEdit(index,row){ 
            this.editFormVisible = true;
            this.title = '编辑文章';
            this.editForm.id = row.id;
            this.editForm.title = row.title;
            this.editForm.body = row.body;
        },
        deleteUser(index,row){
               let url = this.axios.urls.SYSTEM_ARTICLE_DEL;
            this.axios.post(url, {id:row.id}).then((response)=>{
                    console.log(response);
                    this.clearData();
                    this.search();
                }).catch(function(error) {
                    console.log(error);
                });
            },
            clearData(){
                this.editFormVisible = false;
                this.title = '';
                this.editForm.id = 0;
                this.editForm.title = '';
                this.editForm.body = '';
            }
        },
        created(){
            this.doSearch({});
        }
    }
</script>

<style>
</style>

注2：清空表单验证信息

this.$refs[formName].resetFields();

2. CUD
2.1 新增

2.2 添加修改/删除按钮

2.3 在<template>上使用特殊的slot-scope 特性，可以接收传递给插槽的prop