表单高级
组合式函数
通过 组合式函数 函数，监听任意一个超级表单，然后就通过函数来控制该表单。
UseForm 操作
vue
<script setup lang="tsx" name="UseProForm">
import type { ComponentSize, FormItemProp, InputInstance } from "element-plus";
import type { FormColumn, ElFormProps } from "@/components/pro/form";
import { ref, reactive } from "vue";
import { ElRadio, ElMessageBox, ElMessage } from "element-plus";
import { ProForm, useProForm } from "@/components/pro/form";
const { formRegister, formMethods } = useProForm();
const {
setProps,
delColumn,
addColumn,
setValues,
setColumn,
getElInstance,
getElFormItemInstance,
getElFormInstance,
getFormModel,
} = formMethods;
const model = ref<Record<string, any>>({});
// 表单整体配置项
const elFormProps: ElFormProps = {
inline: false,
labelPosition: "right",
labelWidth: 120,
disabled: false,
labelSuffix: " :",
};
// 表单列配置项 (formItemProps 代表 item 配置项，attrs 代表 输入、选择框 配置项)
const columns = reactive<FormColumn[]>([
{
label: "使用 ProForm",
prop: "input",
el: "ElDivider",
},
{
formItemProps: { required: true },
label: "输入框",
prop: "input",
el: "ElInput",
},
{
formItemProps: { required: true },
label: "选择器",
prop: "select",
el: "el-select",
defaultValue: "1",
options: [
{
label: "option1",
value: "1",
},
{
label: "option2",
value: "2",
},
],
},
{
prop: "radio",
label: "单选框",
el: "el-radio-group",
defaultValue: "1",
elSlots: {
default: ({ options }) => {
return options.map(option => {
return (
<ElRadio disabled={option.disabled} label={option.label} value={option.value} key={option.value}></ElRadio>
);
});
},
},
options: [
{
label: "option-1",
value: "1",
},
{
label: "option-2",
value: "2",
},
],
},
{
prop: "checkbox",
label: "多选框",
el: "el-checkbox-group",
defaultValue: ["2"],
options: [
{ label: "option-1", value: "1" },
{ label: "option-2", value: "2" },
{ label: "option-3", value: "3" },
],
},
{
label: "日期选择器",
prop: "datePicker",
el: "el-date-picker",
elProps: { type: "date" },
},
{
label: "时间选择器",
prop: "timeSelect",
el: "el-time-select",
},
{
label: "树形选择",
prop: "treeSelect",
el: "el-tree-select",
options: () => getTreeSelectData(), // 模拟远程获取数据
},
{
label: "上传",
prop: "upload",
el: "el-upload",
defaultValue: [
{
name: "element-plus-logo.svg",
url: "https://element-plus.org/images/element-plus-logo.svg",
},
{
name: "element-plus-logo2.svg",
url: "https://element-plus.org/images/element-plus-logo.svg",
},
],
elProps: {
limit: 3,
action: "https://run.mocky.io/v3/9d059bf9-4660-45f2-925d-ce80ad6c4d15",
multiple: true,
onPreview: uploadFile => {
console.log(uploadFile);
},
onRemove: file => {
console.log(file);
},
beforeRemove: uploadFile => {
return ElMessageBox.confirm(`Cancel the transfer of ${uploadFile.name} ?`).then(
() => true,
() => false
);
},
onExceed: (files, uploadFiles) => {
ElMessage.warning(
`The limit is 3, you selected ${files.length} files this time, add up to ${
files.length + uploadFiles.length
} totally`
);
},
},
elSlots: {
default: () => <el-button type="primary">Click to upload</el-button>,
tip: () => <div class="el-upload__tip">jpg/png files with a size less than 500KB.</div>,
},
},
]);
const changeCol = (col: boolean) => {
setProps({
flexLayout: col,
});
};
const changeLabelWidth = (width: number | string) => {
setProps({
elFormProps: { labelWidth: width },
});
};
const changeSize = (size: ComponentSize) => {
setProps({
elFormProps: { size },
});
};
const changeDisabled = (bool: boolean) => {
setProps({
elFormProps: { disabled: bool },
});
};
const changeColumn = (del: boolean) => {
if (del) {
delColumn("select");
} else if (!del && columns[1].prop !== "select") {
addColumn(
{
formItemProps: { required: true },
label: "选择器",
prop: "select",
el: "el-select",
defaultValue: "1",
options: [
{ label: "option1", value: "1" },
{ label: "option2", value: "2" },
],
},
1
);
}
};
const setValue = async (reset: boolean) => {
const elFormInstance = await getElFormInstance();
if (reset) {
elFormInstance?.resetFields();
} else {
setValues({
input: "输入框",
select: "2",
radio: "2",
checkbox: ["1", "3"],
datePicker: "2022-01-27",
timeSelect: "17:00",
field8: [
{
name: "element-plus-logo.svg",
url: "https://element-plus.org/images/element-plus-logo.svg",
},
{
name: "element-plus-logo2.svg",
url: "https://element-plus.org/images/element-plus-logo.svg",
},
],
});
const formData = await getFormModel();
console.log(formData);
}
};
const index = ref(7);
const setSelectLabel = () => {
setColumn([
{
prop: "select",
field: "label",
value: `选择器 ${index.value}`,
},
{
prop: "select",
field: "options",
value: [
{ label: "option-1", value: "1" },
{ label: "option-2", value: "2" },
{ label: "option-3", value: "3" },
],
},
]);
index.value++;
};
const addFormItem = () => {
if (index.value % 2 === 0) {
addColumn({
prop: `input${index.value}`,
label: `输入框 ${index.value}`,
el: "el-input",
});
} else {
addColumn(
{
prop: `input${index.value}`,
label: `输入框 ${index.value}`,
el: "el-input",
},
index.value
);
}
index.value++;
};
const formValidation = async () => {
const elFormInstance = await getElFormInstance();
elFormInstance?.validate(isValid => {
console.log(isValid);
});
};
const verifyReset = async () => {
const elFormInstance = await getElFormInstance();
elFormInstance?.resetFields();
};
const inoutFocus = async () => {
const inputEl = (await getElInstance("input")) as InputInstance;
inputEl?.focus();
};
const inoutValidation = async () => {
const formItemProps = await getElFormItemInstance("input");
const inputEl = (await getElInstance("input")) as InputInstance;
inputEl?.focus();
formItemProps?.validate("focus", (val: boolean) => {
console.log(val);
});
};
const formValidate = (prop: FormItemProp, isValid: boolean, message: string) => {
console.log(prop, isValid, message);
};
const treeSelectData = [
{
value: "1",
label: "Level one 1",
children: [
{
value: "1-1",
label: "Level two 1-1",
children: [{ value: "1-1-1", label: "Level three 1-1-1" }],
},
],
},
{
value: "2",
label: "Level one 2",
children: [
{
value: "2-1",
label: "Level two 2-1",
children: [{ value: "2-1-1", label: "Level three 2-1-1" }],
},
{
value: "2-2",
label: "Level two 2-2",
children: [{ value: "2-2-1", label: "Level three 2-2-1" }],
},
],
},
{
value: "3",
label: "Level one 3",
children: [
{
value: "3-1",
label: "Level two 3-1",
children: [{ value: "3-1-1", label: "Level three 3-1-1" }],
},
{
value: "3-2",
label: "Level two 3-2",
children: [{ value: "3-2-1", label: "Level three 3-2-1" }],
},
],
},
];
// 模拟远程加载
const getTreeSelectData = (): Promise<typeof treeSelectData> => {
return new Promise(resolve => {
setTimeout(() => {
resolve(treeSelectData);
}, 3000);
});
};
</script>
<template>
<el-space fill>
<el-card shadow="never" header="UseForm 操作">
<el-space wrap>
<el-button @click="changeCol(false)">禁用栅格</el-button>
<el-button @click="changeCol(true)">使用栅格</el-button>
<el-button @click="changeLabelWidth(150)">更改 labelWidth</el-button>
<el-button @click="changeLabelWidth('auto')">还原 labelWidth</el-button>
<el-button @click="changeSize('large')">更改 size</el-button>
<el-button @click="changeSize('default')">还原 size</el-button>
<el-button @click="changeDisabled(true)">禁用表单</el-button>
<el-button @click="changeDisabled(false)">还原表单</el-button>
<el-button @click="changeColumn(true)">删除选择器</el-button>
<el-button @click="changeColumn(false)">添加选择器</el-button>
<el-button @click="setValue(false)">设置表单值</el-button>
<el-button @click="setValue(true)">还原表单值</el-button>
<el-button @click="setSelectLabel">设置选择器 label</el-button>
<el-button @click="addFormItem">添加子项</el-button>
<el-button @click="formValidation">表单验证</el-button>
<el-button @click="verifyReset">表单重置</el-button>
<el-button @click="inoutFocus">输入框聚焦</el-button>
<el-button @click="inoutValidation">输入框表单验证</el-button>
</el-space>
</el-card>
<el-card>
<ProForm
:elFormProps="elFormProps"
:columns
v-model="model"
@register="formRegister"
@validate="formValidate"
:col-props="{ span: 12 }"
/>
</el-card>
</el-space>
</template>1
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隐藏源代码
函数式组件渲染
通过 createFormComponent 函数式创建 ProForm 组件。
vue
<script setup lang="tsx" name="CreateProForm">
import type { FormItemProp } from "element-plus";
import type { FormColumn, ElFormProps } from "@/components/pro/form";
import { ref, reactive } from "vue";
import { ElButton, ElRadio, ElMessageBox, ElMessage } from "element-plus";
import { useProForm } from "@/components/pro/form";
const model = ref<Record<string, any>>({});
const {
createMethods: { createFormComponent },
} = useProForm();
/**
* context 里有 slots 和 attrs，如果元素里有 slots 和 attrs，则必传
*/
const RenderProForm = (_: any, context: Record<string, any>) => {
return createFormComponent(
{
columns: columns as FormColumn[],
modelValue: model.value,
elFormProps,
onValidate: formValidate,
},
context
);
};
const formValidate = (prop: FormItemProp, isValid: boolean, message: string) => {
console.log(prop, isValid, message);
};
// 表单整体配置项
const elFormProps: ElFormProps = {
inline: false,
labelPosition: "right",
labelWidth: 120,
disabled: false,
labelSuffix: " :",
};
const columns = reactive<FormColumn[]>([
{
label: "使用 ProForm",
prop: "input",
el: "ElDivider",
},
{
formItemProps: { required: true },
label: "输入框",
prop: "input",
el: "ElInput",
},
{
formItemProps: { required: true },
label: "选择器",
prop: "select",
el: "el-select",
defaultValue: "1",
options: [
{
label: "option1",
value: "1",
},
{
label: "option2",
value: "2",
},
],
},
{
prop: "radio",
label: "单选框",
el: "el-radio-group",
defaultValue: "1",
elSlots: {
default: ({ options }) => {
return options.map(option => {
return (
<ElRadio disabled={option.disabled} label={option.label} value={option.value} key={option.value}></ElRadio>
);
});
},
},
options: [
{ label: "option-1", value: "1" },
{ label: "option-2", value: "2" },
],
},
{
prop: "checkbox",
label: "多选框",
el: "el-checkbox-group",
defaultValue: ["2"],
options: [
{ label: "option-1", value: "1" },
{ label: "option-2", value: "2" },
{ label: "option-3", value: "3" },
],
},
{
label: "日期选择器",
prop: "datePicker",
el: "el-date-picker",
elProps: { type: "date" },
},
{
label: "时间选择器",
prop: "timeSelect",
el: "el-time-select",
},
{
label: "树形选择",
prop: "treeSelect",
el: "el-tree-select",
options: () => getTreeSelectData(), // 模拟远程获取数据
},
{
label: "上传",
prop: "upload",
el: "el-upload",
defaultValue: [
{
name: "element-plus-logo.svg",
url: "https://element-plus.org/images/element-plus-logo.svg",
},
{
name: "element-plus-logo2.svg",
url: "https://element-plus.org/images/element-plus-logo.svg",
},
],
elProps: {
limit: 3,
action: "https://run.mocky.io/v3/9d059bf9-4660-45f2-925d-ce80ad6c4d15",
multiple: true,
onPreview: uploadFile => {
console.log(uploadFile);
},
onRemove: file => {
console.log(file);
},
beforeRemove: uploadFile => {
return ElMessageBox.confirm(`Cancel the transfer of ${uploadFile.name} ?`).then(
() => true,
() => false
);
},
onExceed: (files, uploadFiles) => {
ElMessage.warning(
`The limit is 3, you selected ${files.length} files this time, add up to ${
files.length + uploadFiles.length
} totally`
);
},
},
elSlots: {
default: () => <ElButton type="primary">Click to upload</ElButton>,
tip: () => <div class="el-upload__tip">jpg/png files with a size less than 500KB.</div>,
},
},
]);
const treeSelectData = [
{
value: "1",
label: "Level one 1",
children: [
{
value: "1-1",
label: "Level two 1-1",
children: [{ value: "1-1-1", label: "Level three 1-1-1" }],
},
],
},
{
value: "2",
label: "Level one 2",
children: [
{
value: "2-1",
label: "Level two 2-1",
children: [{ value: "2-1-1", label: "Level three 2-1-1" }],
},
{
value: "2-2",
label: "Level two 2-2",
children: [{ value: "2-2-1", label: "Level three 2-2-1" }],
},
],
},
{
value: "3",
label: "Level one 3",
children: [
{
value: "3-1",
label: "Level two 3-1",
children: [{ value: "3-1-1", label: "Level three 3-1-1" }],
},
{
value: "3-2",
label: "Level two 3-2",
children: [{ value: "3-2-1", label: "Level three 3-2-1" }],
},
],
},
];
// 模拟远程加载
const getTreeSelectData = () => {
return new Promise(resolve => {
setTimeout(() => {
resolve(treeSelectData);
}, 3000);
});
};
</script>
<template>
<RenderProForm />
</template>1
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隐藏源代码
函数式渲染
通过 createForm 函数式动态渲染 ProForm 组件到指定元素。
该函数会返回 useProForm 函数的返回值，如果你不清楚什么是 useProForm，请查看 组合式函数。
vue
<script setup lang="tsx" name="CreateProForm">
import type { FormItemProp } from "element-plus";
import type { FormColumn, ElFormProps } from "@/components/pro/form";
import { ref, reactive, onMounted } from "vue";
import { ElButton, ElRadio, ElMessageBox, ElMessage } from "element-plus";
import { useProForm } from "@/components/pro/form";
const model = ref<Record<string, any>>({});
const {
createMethods: { createForm },
} = useProForm();
onMounted(() => {
createForm("proFormInstance", {
columns: columns as FormColumn[],
modelValue: model.value,
elFormProps,
onValidate: formValidate,
});
});
const formValidate = (prop: FormItemProp, isValid: boolean, message: string) => {
console.log(prop, isValid, message);
};
// 表单整体配置项
const elFormProps: ElFormProps = {
inline: false,
labelPosition: "right",
labelWidth: 120,
disabled: false,
labelSuffix: " :",
};
const columns = reactive<FormColumn[]>([
{
label: "使用 ProForm",
prop: "input",
el: "ElDivider",
},
{
formItemProps: { required: true },
label: "输入框",
prop: "input",
el: "ElInput",
},
{
formItemProps: { required: true },
label: "选择器",
prop: "select",
el: "el-select",
defaultValue: "1",
options: [
{ label: "option1", value: "1" },
{ label: "option2", value: "2" },
],
},
{
prop: "radio",
label: "单选框",
el: "el-radio-group",
defaultValue: "1",
elSlots: {
default: ({ options }) => {
return options.map(option => {
return (
<ElRadio disabled={option.disabled} label={option.label} value={option.value} key={option.value}></ElRadio>
);
});
},
},
options: [
{
label: "option-1",
value: "1",
},
{
label: "option-2",
value: "2",
},
],
},
{
prop: "checkbox",
label: "多选框",
el: "el-checkbox-group",
defaultValue: ["2"],
options: [
{ label: "option-1", value: "1" },
{ label: "option-2", value: "2" },
{ label: "option-3", value: "3" },
],
},
{
label: "日期选择器",
prop: "datePicker",
el: "el-date-picker",
elProps: { type: "date" },
},
{
label: "时间选择器",
prop: "timeSelect",
el: "el-time-select",
},
{
label: "树形选择",
prop: "treeSelect",
el: "el-tree-select",
options: () => getTreeSelectData(), // 模拟远程获取数据
},
{
label: "上传",
prop: "upload",
el: "el-upload",
defaultValue: [
{
name: "element-plus-logo.svg",
url: "https://element-plus.org/images/element-plus-logo.svg",
},
{
name: "element-plus-logo2.svg",
url: "https://element-plus.org/images/element-plus-logo.svg",
},
],
elProps: {
limit: 3,
action: "https://run.mocky.io/v3/9d059bf9-4660-45f2-925d-ce80ad6c4d15",
multiple: true,
onPreview: uploadFile => {
console.log(uploadFile);
},
onRemove: file => {
console.log(file);
},
beforeRemove: uploadFile => {
return ElMessageBox.confirm(`Cancel the transfer of ${uploadFile.name} ?`).then(
() => true,
() => false
);
},
onExceed: (files, uploadFiles) => {
ElMessage.warning(
`The limit is 3, you selected ${files.length} files this time, add up to ${
files.length + uploadFiles.length
} totally`
);
},
},
elSlots: {
default: () => <ElButton type="primary">Click to upload</ElButton>,
tip: () => <div class="el-upload__tip">jpg/png files with a size less than 500KB.</div>,
},
},
]);
const treeSelectData = [
{
value: "1",
label: "Level one 1",
children: [
{
value: "1-1",
label: "Level two 1-1",
children: [{ value: "1-1-1", label: "Level three 1-1-1" }],
},
],
},
{
value: "2",
label: "Level one 2",
children: [
{
value: "2-1",
label: "Level two 2-1",
children: [{ value: "2-1-1", label: "Level three 2-1-1" }],
},
{
value: "2-2",
label: "Level two 2-2",
children: [{ value: "2-2-1", label: "Level three 2-2-1" }],
},
],
},
{
value: "3",
label: "Level one 3",
children: [
{
value: "3-1",
label: "Level two 3-1",
children: [{ value: "3-1-1", label: "Level three 3-1-1" }],
},
{
value: "3-2",
label: "Level two 3-2",
children: [
{
value: "3-2-1",
label: "Level three 3-2-1",
},
],
},
],
},
];
// 模拟远程加载
const getTreeSelectData = () => {
return new Promise(resolve => {
setTimeout(() => {
resolve(treeSelectData);
}, 3000);
});
};
</script>
<template>
<div ref="proFormInstance"></div>
</template>1
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隐藏源代码