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

　　注2：清空表单验证信息

　　this.$refs[formName].resetFields();

Articles.vue

<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="add()">添加</el-button>
      </el-form-item>
    </el-form>
    <!-- 列表-->
    <el-table size="small" :data="listData" style=" 100%;" border max-height="550" element-loading-text="拼命加载中">
      <el-table-column sortable prop="id" label="ID" width="300"></el-table-column>
      <el-table-column sortable prop="title" label="文章标题" width="300"></el-table-column>
      <el-table-column sortable prop="body" label="文章内容" width="300"></el-table-column>
      <el-table-column align="center" label="操作" min-width="300">
        <template slot-scope="scope">
          <el-button size="mini" @click="edit(scope.$index, scope.row)">编辑</el-button>
          <el-button size="mini" type="danger" @click="del(scope.$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="formInline.rows" layout="total, sizes, prev, pager, next, jumper"
      :total="pageBean.total">
    </el-pagination>

    <!-- 编辑界面 -->
    <el-dialog :title="title" :visible.sync="editFormVisible" width="30%" @click="closeDialog" :before-close="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">保存</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        listData: [],
        pageBean: {
          total: 0
        },
        formInline: {
          title: '',
          page: 1,
          rows: 10
        },
        editFormVisible: false,
        title: '',
        editForm: {
          title: '',
          body: '',
          id: 0
        },
        /* 验证*/
        rules: {
          title: [{
            required: true,
            message: '请输入文章标题',
            trigger: 'blur' /*失去焦点 */
          }],
          body: [{
              required: true,
              message: '请输入文章内容',
              trigger: 'blur'
            },
            {
              min: 3,
              max: 5000,
              message: '长度在 3 到 5000 个字符',
              trigger: 'blur'
            }
          ]
        }
      }
    },
    methods: {
      /* 搜索*/
      search() {
        this.doSearch(this.formInline);
      },
      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.pageBean = response.data.pageBean;
        }).catch(function(error) {
          console.log(error);
        });
      },
      handleSizeChange(rows) {
        console.log('页码大小发生改变的时候触发！！！' + rows)
        this.formInline.page = 1;
        this.formInline.rows = rows;
        this.search();
      },
      handleCurrentChange(page) {
        console.log('当前页页码发生改变的时候触发！！！' + page)
        this.formInline.page = page;
        this.search();
      },
      /* 关闭编辑表单*/
      closeDialog() {
        this.editFormVisible = false
        this.clearForm()
      },
      /* 提交表单*/
      submitForm() {
        // 用来提交新增、修改的表单数据的，提交之前需要通过vue实例中定义的表单填写规则
        this.$refs['editForm'].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.closeDialog();
              this.doSearch(this.formInline);
            }).catch(function(error) {
              console.log(error);
            });

          } else {
            console.log('error submit!!');
            return false;
          }
        });
      },
      /* 清空表单数据*/
      clearForm() {
          this.editForm.title = '',
          this.editForm.body = '',
          this.formInline.page = 1,
          this.formInline.rows = 10

      },
      /* 新增*/
      add() {
        this.title = '新增文章';
        this.editFormVisible = true
      },
      /* 编辑*/
      edit(index, row) {
        // index代表的是操作数据在当前界面的行号
        // row代表操作的当前数据，那也就意味着可以从row中获取所有的数据库列段名
        // $("#dd").datagrid("getSelected");
        // $("#ff").form("load",row);完成数据回显
        this.title = '编辑文章';
        this.editForm.id = row.id
        this.editForm.title = row.title
        this.editForm.body = row.body
        this.editFormVisible = true

      },
      /* 删除*/
      del(index, row) {
        let url = this.axios.urls.SYSTEM_ARTICLE_DEL;
        this.axios.post(url, {
          id: row.id
        }).then((response) => {
          console.log(response);
          this.clearForm();
          this.doSearch({});
        }).catch(function(error) {
          console.log(error);
        });
      }
    },
    created() {
      this.doSearch({});
    }
  }
</script>

<style>

</style>

效果：