ElementUI之CUD+表单验证

   <!-- 编辑窗体 -->
    <el-dialog :title="title" :visible.sync="dialogFormVisible" @close="clear">
      <el-form :model="book" :rules="rules" ref="book">
        <el-form-item label="书籍编号" :label-width="formLabelWidth" prop="id">
          <el-input v-model="book.id" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="书籍名称" :label-width="formLabelWidth" prop="bookname">
          <el-input v-model="book.bookname" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="书籍价格" :label-width="formLabelWidth" prop="price">
          <el-input v-model="book.price" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="书籍类别" :label-width="formLabelWidth" prop="booktype">
          <el-select v-model="book.booktype" placeholder="请选择活动区域">
            <el-option v-for="t in types" :label="t.name" :value="t.name" :key="'key_'+t.id"></el-option>
          </el-select>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">取 消</el-button>
        <el-button type="danger" @click="dosub">确 定</el-button>
      </div>
    </el-dialog>

  export default {
    data() {
      return {
        bookname: '',
        tableData: [],
        rows: 10,
        total: 0,
        page: 1,
        title: '新增窗体',
        dialogFormVisible: false,
        formLabelWidth: '100px',
        types: [],
        book: {
          id: '',
          bookname: '',
          price: '',
          booktype: ''
        },
        rules: {
          bookname: [{
            required: true,
            message: '请输入书籍名称',
            trigger: 'blur'
          }],
          price: [{
            required: true,
            message: '请输入书籍名称',
            trigger: 'blur'
          }],
          booktype: [{
            required: true,
            message: '请输入书籍名称',
            trigger: 'blur'
          }]
        }
      }
    },
    methods: {
      del(idx, row) {
        this.$confirm('此操作将永久删除id为' + row.id + '的数据, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          let url = this.axios.urls.SYSTEM_BookDEL;
          this.axios.post(url, {
            id: row.id
          }).then(d => {
            console.log(d);
            this.$message({
              type: 'success',
              message: '删除成功!'
            });
            this.query({});
            this.tableData = d.data.rows;
            this.total = d.data.total;
          }).catch(e => {
          })
        }).catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除'
          });
        });
      },
      dosub() {
        this.$refs['book'].validate((valid) => {
          if (valid) {
            alert('submit!');
            let url = this.axios.urls.SYSTEM_BookADD;
            if (this.title == '编辑窗体') {
              url = this.axios.urls.SYSTEM_BookUPD;
            }
            let params = {
              id: this.book.id,
              bookname: this.book.bookname,
              price: this.book.price,
              booktype: this.book.booktype
            }
            this.axios.post(url, params).then(d => {
              console.log(d);
              this.clear();
              this.query({});
              this.tableData = d.data.rows;
              this.total = d.data.total;
            }).catch(e => {
            })
          } else {
            console.log('error submit!!');
            return false;
          }
        });
      },
      clear() {
        //初始化窗体
        this.dialogFormVisible = false;
        this.title = '新增窗体';
        this.book = {
          id: '',
          bookname: '',
          price: '',
          booktype: ''
        }
      },
      open(idx, row) {
        //打开窗体的方法
        this.dialogFormVisible = true;
        if (row) {
          this.title = '编辑窗体';
          this.book.id = row.id;
          this.book.bookname = row.bookname;
          this.book.price = row.price;
          this.book.booktype = row.booktype;
        }
      },
      handleSizeChange(r) {
        //当页大小发生变化
        let params = {
          bookname: this.bookname,
          rows: r,
          page: this.page
        }
        // console.log(params)
        this.query(params);
      },
      handleCurrentChange(p) {
        //当前页码大小发生变化
        let params = {
          bookname: this.bookname,
          rows: this.rows,
          page: p
        }
        // console.log(params)
        this.query(params);
      },
      query(params) {
        //获取后台请求书籍数据的地址
        let url = this.axios.urls.SYSTEM_BookList;
        this.axios.get(url, {
          params: params
        }).then(d => {
          console.log(url)
          this.tableData = d.data.rows;
          this.total = d.data.total;
        }).catch(e => {});
      },
      onSubmit() {
        let params = {
          bookname: this.bookname
        }
        console.log(params)
        this.query(params);
        this.bookname = ''
      }
    },
    created() {
      this.query({});
      this.types = [{
        id: 1,
        name: '玄幻'
      }, {
        id: 2,
        name: '动作'
      }, {
        id: 3,
        name: '爱情'
      }, {
        id: 4,
        name: '伦理'
      }, {
        id: 5,
        name: '搞笑'
      }];
    }
  }

  rules: {
          bookname: [{
            required: true,
            message: '请输入书籍名称',
            trigger: 'blur'
          }],
          price: [{
            required: true,
            message: '请输入书籍价格',
            trigger: 'blur'
          }],
          booktype: [{
            required: true,
            message: '请输入书籍类型',
            trigger: 'blur'
          }]
        }

 dosub() {
        this.$refs['book'].validate((valid) => {
          if (valid) {
            let url = this.axios.urls.SYSTEM_BookADD;
            if (this.title == '编辑窗体') {
              url = this.axios.urls.SYSTEM_BookUPD;
            }
            let params = {
              id: this.book.id,
              bookname: this.book.bookname,
              price: this.book.price,
              booktype: this.book.booktype
            }
            this.axios.post(url, params).then(d => {
              console.log(d);
              this.clear();
              this.query({});
              this.tableData = d.data.rows;
              this.total = d.data.total;
            }).catch(e => {
            })
          } else {
            console.log('error submit!!');
            return false;
          }
        });
      },