element基于el-form智能的FormSmart表单组件

<script>
export default {
    props: {
        model: {
            type: Object,
            default: () => {},
        },
        rowItems: {
            type: Array,
            default: () => [],
        },
        formItems: {
            type: Array,
            default: () => [],
        },
    },
    data() {
        return {
            _model: {},
        };
    },
    mounted() {
        // 用于重置，时间范围选择组件时重置不了endTime
        this._model = { ...this.model };
        // 默认选中光标，设置ref=focus
        this.focus();
    },
    methods: {
        // 处理v-modelv value 值
        hanlderValue(prop) {
            // 时间范围选择组件处理
            if (Array.isArray(prop) && prop.length > 0) {
                const [first] = prop;
                if (this.model[first]) {
                    const data = prop.map((key) => this.model[key]);
                    return data;
                }
                return [];
            }
            return this.model[prop];
        },
        // 处理FormItem绑定值
        hanlderFormItemProp(prop) {
            // 时间范围选择组件处理
            if (Array.isArray(prop) && prop.length > 0) {
                // 处理时间范围选择的
                const [first] = prop;
                return first;
            }
            return prop;
        },
        // 处理改变值
        hanlderModel(prop, value) {
            // 时间范围选择组件处理
            if (prop && Array.isArray(prop)) {
                if (Array.isArray(value)) {
                    // 数组对应值
                    prop.forEach((key, index) => {
                        this.model[key] = value && value.length > 0 ? value[index] : '';
                    });
                } else if ([null, '', undefined].includes(value)) {
                    // 数组有清除按钮时，数组一起清理
                    prop.forEach((key) => {
                        this.model[key] = value;
                    });
                }
            } else {
                this.model[prop] = value;
            }
        },
        focus() {
            this.$nextTick(() => {
                if (this.$refs.focus) {
                    setTimeout(() => {
                        this.$refs.focus.focus();
                    }, 100);
                }
            });
        },
        validate(...props) {
            return this.$refs.form.validate(...props);
        },
        // 对部分字段进行校验
        validateField(...props) {
            return this.$refs.form.validateField(...props);
        },
        // 对整个表单进行重置
        resetFields() {
            Object.assign(this.model, this._model);
            this.$refs.form.resetFields();
        },
        // 移除表单项的校验结果
        clearValidate(...props) {
            this.$refs.form.clearValidate(...props);
        },
    },
    render(createElement) {
        // 父级slots
        // form-item label slot
        const slotLabel = (slotName) => createElement(
            'template',
            {
                slot: 'label',
            },
            this.$slots[slotName],
        );
        // formItem 组件
        const formItem = (item) => createElement(
            'el-form-item',
            {
                props: {
                    ...item,
                    prop: this.hanlderFormItemProp(item.prop),
                },
                scopedSlots: {
                    error: (prop) => this.$scopedSlots[item.slotErrorName] && this.$scopedSlots[item.slotErrorName](prop),
                },
            },
            [
                // 加入label插槽
                item.slotLabelName ? slotLabel(item.slotLabelName) : '',
                // 有插槽优先
                item.slotName ? this.$slots[item.slotName] : createElement(item.type || 'el-input', {
                    //
                    ref: item.ref,
                    attrs: {
                        ...item.props,
                    },
                    props: {
                        clearable: true,
                        ...item.props,
                        value: this.hanlderValue(item.prop),
                    },
                    // 加样式
                    style: {
                        width: '240px',
                        ...(item.props && item.props.style),
                    },
                    on: {
                        ...item.on,
                        change: (value) => {
                            // 重写change方法
                            if (item.on && item.on.change) {
                                item.on.change(value);
                            }
                            this.hanlderModel(item.prop, value);
                        },
                        // el-input 场景
                        input: (value) => {
                            this.hanlderModel(item.prop, value);
                        },
                    },
                }),
            ],
        );
        // col 组件
        const col = (item) => createElement('el-col', {
            props: {
                ...item,
            },
        }, item.formItem ? [formItem(item.formItem)] : '');
        // row组件
        const row = (item) => createElement('el-row', {
            props: {
                ...item,
            },
        }, item.cols.map((list) => col(list)));
        return createElement(
            'el-form',
            {
                ref: 'form',
                props: {
                    ...this.$attrs,
                    model: this.model,
                },
                on: {
                    ...this.$listeners,
                },
            },
            // rowItems 优先
            this.rowItems.length ? this.rowItems.map((item) => row(item)) : this.formItems.map((item) => formItem(item)),
        );
    },
};
</script>

<style lang="scss" module="s"></style>

<template>
  <div>
    <d-form-smart
      ref="form"
      :model="form"
      label-width="150px"
      label-position="left"
      :form-items="formItems"
    >
      <template #slotErrorName>
        <span>按钮</span>
      </template>
      <template #region-label>
        <el-badge :value="12" class="item">
          <span>自定义label</span>
        </el-badge>
      </template>
      <template #btn>
        <el-button type="primary" @click="submit">提交</el-button>
      </template>
    </d-form-smart>
  </div>
</template>
<script>
  export default {
    data() {
      return {
        form: {
          name: '',
          region: '',
          date: [],
          delivery: false,
          personnel: '',
          radio: '',
          checkbox: [],
          cascader: [],
          timeSelect: '',
          datePicker: '',
          startTime: '',
          endTime: '',
          rate: 0,
          special: '',
          desc: null,
        },
        rules: {
          name: [
            { required: true, message: '请输入活动名称', trigger: 'blur' },
            {
              min: 3,
              max: 5,
              message: '长度在 3 到 5 个字符',
              trigger: 'blur',
            },
          ],
        },
        formItems: [
          {
            label: '名字',
            prop: 'name',
            type: 'el-input',
            props: {
              placeholder: '请输入内容',
            },
          },
          {
            label: '开关',
            prop: 'delivery',
            type: 'el-switch',
          },
          {
            prop: 'region',
            type: 'd-select-smart',
            slotLabelName: 'region-label',
            props: {
              list: [],
            },
          },
          {
            label: '级联',
            prop: 'cascader',
            type: 'el-cascader',
            props: {
              options: [
                {
                  value: 'zhinan',
                  label: '指南',
                  children: [
                    {
                      value: 'shejiyuanze',
                      label: '设计原则',
                      children: [
                        {
                          value: 'yizhi',
                          label: '一致',
                        },
                        {
                          value: 'fankui',
                          label: '反馈',
                        },
                        {
                          value: 'xiaolv',
                          label: '效率',
                        },
                        {
                          value: 'kekong',
                          label: '可控',
                        },
                      ],
                    },
                  ],
                },
              ],
            },
          },
          {
            label: '时间选择',
            prop: 'timeSelect',
            type: 'el-time-select',
            props: {
              placeholder: '选择时间',
            },
          },
          {
            label: '日期选择',
            prop: 'datePicker',
            type: 'el-date-picker',
            props: {
              placeholder: '选择日期',
              valueFormat: 'yyyy-MM-dd',
            },
          },
          {
            label: '日期范围选择',
            prop: ['startTime', 'endTime'],
            type: 'el-date-picker',
            props: {
              type: 'daterange',
              startPlaceholder: '开始日期',
              endPlaceholder: '结束日期',
              format: 'yyyy-MM-dd',
              valueFormat: 'yyyy-MM-dd',
            },
          },
          {
            label: '评分',
            prop: 'rate',
            type: 'el-rate',
          },
          {
            label: '备注',
            prop: 'desc',
            type: 'el-input',
            props: {
              placeholder: '请输入内容',
              type: 'textarea',
              style: {
                width: '400px',
              },
            },
          },
          {
            slotName: 'btn',
            props: {},
          },
        ],
      };
    },
    methods: {
      change(val) {
        console.log('change', val);
      },
      submit(){
           console.log(this.form);
      }
    },
  };
</script>

  queryItems: [
        {
            label: '属性编码',
            prop: 'propertyValueCode',
            props: {
                placeholder: '属性编码',
            },
        },
        {
            label: '属性名称',
            prop: 'name',
            props: {
                placeholder: '属性名称',
            },
        },
    ],

    <d-form-smart
        @submit.native.prevent
        ref="query"
        inline
        :model="query"
        label-width="80px"
        label-position="right"
        :form-items="queryItems"
      >
      </d-form-smart>

  async add() {
            try {
                // 重置表单
                Object.assign(this.form, this.$options.data().form);
                this.$msgbox({
                    customClass: ['custom-message-box'],
                    title: '新增属性',
                    message: this.$createElement('FormSmart', {
                        ref: 'form',
                        key: Math.random(), // 重新创建，不缓存
                        attrs: {
                            labelWidth: '100px',
                            labelPosition: 'right',
                            model: this.form,
                            rules: this.opRules,
                            formItems: opItems,
                        },
                    }),
                    closeOnClickModal: false,
                    showCancelButton: true,
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    beforeClose: async (action, instance, done) => {
                        if (action === 'confirm') {
                            await this.$refs.form.validate();
                            instance.confirmButtonLoading = true;
                            try {
                                // 请求接口编写的地方
                                instance.confirmButtonLoading = false;
                                done();
                            } catch (error) {
                                instance.confirmButtonLoading = false;
                            }
                        } else {
                            this.$refs.form.resetFields();
                            done();
                        }
                    },
                });
            } catch (error) {
                console.error(error);
            }
        },