vue3组件封装系列-表单请求-编程知识

我们在开发一些后台管理系统时，总是会写很多的列表查询页面，如果不封装组件，就会无限的复制粘贴，而且页面很冗余，正常情况下，我们都是要把组件进行二次封装，来达到我们想要效果。这里我分享一下我近期封装的关于列表的组件封装。
vue3+element-plus

表单组件

src\components\TableSeach

<template><div class="table-search-root"><el-formref="searchForm"class="table-search__form":model="formData"size="default"label-width="128px"v-bind="formProps"><!-- 查询表单模块 --><el-row class="table-search__row"><el-colv-for="(field, index) in fields":key="field.prop"class="table-search__col":class="{ 'form__item--hidden': shouldCollapse(index) }":xl="6":lg="8":md="12":sm="24"><el-form-item :label="field.label" :prop="field.prop"><slot v-if="$slots[field.prop]" :name="field.prop"></slot><componentv-else:is="field.type"v-model.trim="formData[field.prop]":placeholder="defaultPlaceHolder(field)"v-bind="getFormFieldProps(field.type, field.props)"><template v-if="field.type === FieldsType.SELECT"><el-optionv-for="option in field.options":key="option.value":label="option.label":value="option.value"/></template></component></el-form-item></el-col><!-- 操作按钮模块 --><div class="table-search__btns"><el-button type="primary" :loading="props.loading" @click="handleSearch">查询</el-button><el-button :loading="props.loading" @click="handleReset"> 重置 </el-button><spanv-if="showCollapseBtn"class="table-search__btn--filter ml-28"@click="toggleCollapse">{{ isCollapse ? '展开' : '收起' }}<el-icon color="#c0c4cc" v-show="isCollapse"><CaretBottom /></el-icon><el-icon color="#c0c4cc" v-show="!isCollapse"><CaretTop /></el-icon></span></div></el-row></el-form></div>
</template>
<script lang="ts">
// 解决组件不渲染问题---使用的是自动引入方式，不知为何有bug，暂时只能用这种方式解决，有好办法的也可以分享一下 
import {ElInput,ElInputNumber,ElSelect,ElTimePicker,ElTimeSelect,ElDatePicker
} from 'element-plus';
export default {components: {ElInput,ElInputNumber,ElSelect,ElTimePicker,ElDatePicker,ElTimeSelect}
};
</script>
<script setup lang="ts">
import { type PropType, ref, toRefs, computed } from 'vue';
import defaultFieldsProps from './defaultFieldsProps';
const FieldsType = {INPUT: 'el-input',SELECT: 'el-select'
};
type filed = {prop: string;label?: string;type?: string;options?: any[];[propName: string]: any;
};
interface size {width: number;quantity: number;
}
// 不同尺寸所对应的页面宽度和每行 ElFormItem 个数
const DifferentSizeData = [{ width: 1900, quantity: 4 }, // xl{ width: 1200, quantity: 3 }, // large{ width: 992, quantity: 2 }, // middle{ width: 768, quantity: 1 }, // small{ width: 0, quantity: 1 } // less than small
];
const props = defineProps({modelValue: {type: Object,default: () => ({})},formProps: {type: Object,default: () => ({})},fields: {type: Array as PropType<filed[]>,default: () => []},defaultCollapse: {type: Boolean,default: false},loading: {type: Boolean,default: false}
});
const formData: { [key: string]: any } = defineModel();
const emit = defineEmits(['search', 'reset']);
const { defaultCollapse, fields, formProps } = toRefs(props);
const isCollapse = ref(true);
isCollapse.value = defaultCollapse.value;
const searchForm = ref<any>(null);
const showCollapseBtn = computed(() => {const quantity = getPerLineItemQuantity();return fields.value.length >= quantity;
});
const getFormFieldProps = (fieldType: any, props: any) => {const defaultProps: { [key: string]: any } = defaultFieldsProps;return { ...defaultProps[fieldType], ...props };
};
const shouldCollapse = (index: any) => {const quantity = getPerLineItemQuantity();return index > quantity - 2 && isCollapse.value;
};
const getPerLineItemQuantity = () => {const documentScrollWidth = document.documentElement.scrollWidth;const size = DifferentSizeData.find((item) => documentScrollWidth >= item.width);return (size as size).quantity;
};
const defaultPlaceHolder = (field: any) => {const newLabel = field.label.replace(':', '').replace('：', '');return field.type === FieldsType.SELECT ? `请选择${newLabel}` : `请输入${newLabel}`;
};
const toggleCollapse = () => {isCollapse.value = !isCollapse.value;
};
const handleSearch = () => {emit('search', formData.value);
};
const handleReset = () => {searchForm.value.resetFields();emit('reset', formData.value);
};
const handleResetForm = () => {searchForm.value.resetFields();
};
defineExpose({handleResetForm
});
</script>
<style lang="scss" scoped>
/**  查询表单模块样式  **/
.table-search__form {display: flex;flex-wrap: wrap;
}.table-search__row {width: 100%;
}.table-search__col:last-of-type {margin-bottom: 0;
}:deep(.el-form-item__label) {width: 128px;white-space: nowrap;overflow: hidden;font-weight: 400;font-size: 14px;color: #282828;
}:deep(.el-select),
:deep(.el-cascader),
:deep(.el-date-editor--daterange.el-input),
:deep(.el-date-editor--daterange.el-input__inner),
:deep(.el-date-editor--timerange.el-input),
:deep(.el-date-editor--timerange.el-input__inner),
:deep(.el-date-editor--datetimerange.el-input),
:deep(.el-date-editor--datetimerange.el-input__inner) {width: 100%;
}:deep(.el-date-editor .el-range-separator) {width: auto;
}.form__item--hidden {display: none;
}/**  操作按钮模块样式  **/
.table-search__btns {margin-left: auto;margin-bottom: 16px;
}.table-search__btn--filter {font-size: 14px;color: #606266;cursor: pointer;
}/**  功能样式  **/
.ml-28 {margin-left: 28px;
}
</style>

src\components\TableSeach\defaultFieldsProps.ts

export default {'date-picker': {valueFormat: 'x',},XXXXX这里写一些项目公共的想要特殊处理的参数
};

表单组件就是这样

使用效果

收起状态
在这里插入图片描述

展开状态
在这里插入图片描述

使用方式

<template><TableSeachv-model="searchQuery"ref="TableSeach":fields="serchFields":formProps="{labelWidth: '120px'}":loading="loading.tableLoading"@search="handleQuery"@reset="handleQuery"><template #staff_ids>基础组件无法实现的情况下可以用插槽的方式添加其他组件用以实现</template><template #tags>基础组件无法实现的情况下可以用插槽的方式添加其他组件用以实现</template></TableSeach>
</template>
<script setup lang="ts">
import { ref, onMounted } from 'vue';
import TableSeach from '@/components/TableSeach/index.vue';const searchQuery = ref({xxxxxxx:xxxxx
});
const loading = ref({tableLoading: false
});onMounted(() => {handleQuery();
});
const handleQuery = async () => {xxxxxxxxxxx
};const serchFields = [{label: 'xxxxxx',prop: 'time',type: FormType.DATE_PICKER,props: {type: 'daterange',startPlaceholder: '开始日期',endPlaceholder: '结束日期',disabledDate: disabledDate, valueFormat: YMD}},{label: 'xxxxxxx',prop: 'staff_ids'},{label: 'xxxxx',prop: 'tags'},{label: 'xxxxxx',prop: 'loss',type: FormType.SELECT,options: [{ value: -1, label: '全部' }, ...dynamicList]},{label: 'xxxxxx',prop: 'del_staff_id',type: FormType.SELECT,options: staffOptions.value,props: {filterable: true,remote: true,loading: loading.value.staffLoading,remoteMethod: remoteStaffMethod}},xxxxxxxxxxxxxxxx
]
</script>

如上，除了部分参数key是需要固定以外，其余element本身自带的参数也全部可以使用props传入，特殊需求在组件不满足情况下也可以使用插槽形式更改显示

本示例只是简单写了一下，在某些情况下需要传入参数也可以将serchFields改为function接收参数

有什么问题的欢迎提出，也欢迎大佬指出不足之处