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=“文章标题” prop=“title”>
<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();

2.功能：

主要是根据友情网站：element-UI官网

① dialog布局

 <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">保存</el-button>
      </div>
    </el-dialog>

② 表单验证

 rules: {
          title: [{
            required: true, //必填项
            message: '请输入文章标题', //提示错误信息
            trigger: 'blur' //失去焦点事件
          }],
          body: [{
              required: true, //必填项
              message: '请输入文章内容', //提示错误信息
              trigger: 'blur' //失去焦点事件
            },
            {
              min: 3,
              max: 5,
              message: '长度在 3 到 5 个字符',
              trigger: 'blur'
            }
          ]
        }

③ 新增功能

add() {
        this.title = '新增文章';
        this.editFormVisible = true;

④ 修改功能

做修改时我们需要用到数据回显(与easy-ui的数据回显相似)
var row = $(“add”).datagrid(“getSelected”);
$("#ff").form(“load”,row);//完成了数据回显

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，那也就是意味着可以从row中或所有数据库列段名
        
        this.title = '编辑文章';
        this.editForm.id = row.id;
        this.editForm.title = row.title;
        this.editForm.body = row.body;
        console.log(this.editForm.body );
        this.editFormVisible = true;
      }

⑤ 删除功能

del(index,row){
        let url = this.axios.urls.SYSTEM_ARTICLE_DEL;
        this.axios.post(url, {id:row.id}).then((response) => {
          console.log(response);
          this.clearFrom();
          this.doSearch({});
        }).catch((response) => {
          console.log(response);
        });

      }

3.Demo

<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="请输入文章标题"></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">新增</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="width: 100%;">
      <el-table-column prop="id" label="ID" min-width="10" align="center"></el-table-column>
      <el-table-column prop="title" label="标题" min-width="20"></el-table-column>
      <el-table-column prop="body" label="内容" min-width="70"></el-table-column>
      <el-table-column align="center" label="操作" min-width="20">
        <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">
      <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">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: {
          body: '',
          title: '',
          id:0
        },
        rules: {
          title: [{
            required: true, //必填项
            message: '请输入文章标题', //提示错误信息
            trigger: 'blur' //失去焦点事件
          }],
          body: [{
              required: true, //必填项
              message: '请输入文章内容', //提示错误信息
              trigger: 'blur' //失去焦点事件
            },
            {
              min: 3,
              max: 5,
              message: '长度在 3 到 5 个字符',
              trigger: 'blur'
            }
          ]
        }
      };
    },
    methods: {
      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.total = response.data.pageBean.total;
          this.pageBean = response.data.pageBean;
        }).catch((response) => {
          console.log(response);
        });
      },
      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();
      },
      closeDialog() {
        this.editFormVisible = false;
        this.clearFrom();
      },
      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.clearFrom();
              this.doSearch(this.formInline);
            }).catch((response) => {
              console.log(response);
            });
          } else {
            console.log('error submit!!');
            return false;
          }
        });
      },
      clearFrom() {
         this.editForm.id = 0;
        this.editForm.title = '';
        this.editForm.body = '';
        this.formInline.page = 1;
        this.formInline.rows = 10;
        this.editFormVisible = false;
      },
      add() {
        this.title = '新增文章';
        this.editFormVisible = true;
      },
      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，那也就是意味着可以从row中或所有数据库列段名
        //var row = $("add").datagrid("getSelected");
        //$("#ff").form("load",row);完成了数据回显
        this.title = '编辑文章';
        this.editForm.id = row.id;
        this.editForm.title = row.title;
        this.editForm.body = row.body;
        console.log(this.editForm.body );
        this.editFormVisible = true;
      },
      del(index,row){
        let url = this.axios.urls.SYSTEM_ARTICLE_DEL;
        this.axios.post(url, {id:row.id}).then((response) => {
          console.log(response);
          this.clearFrom();
          this.doSearch({});
        }).catch((response) => {
          console.log(response);
        });

      }
    },
    created() {
      this.doSearch({});
    }
  }
</script>

<style>
</style>

Demo效果

主界面

新增+表单


编辑效果

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