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<template>
<view class="uni-forms" :class="{ 'uni-forms--top': !border }">
<form @submit.stop="submitForm" @reset="resetForm">
<slot></slot>
</form>
</view>
</template>
<script>
// #ifndef VUE3
import Vue from 'vue';
Vue.prototype.binddata = function(name, value, formName) {
if (formName) {
this.$refs[formName].setValue(name, value);
} else {
let formVm;
for (let i in this.$refs) {
const vm = this.$refs[i];
if (vm && vm.$options && vm.$options.name === 'uniForms') {
formVm = vm;
break;
}
}
if (!formVm) return console.error('当前 uni-froms 组件缺少 ref 属性');
formVm.setValue(name, value);
}
};
// #endif
import Validator from './validate.js';
/**
* Forms 表单
* @description 由输入框、选择器、单选框、多选框等控件组成,用以收集、校验、提交数据
* @tutorial https://ext.dcloud.net.cn/plugin?id=2773
* @property {Object} rules 表单校验规则
* @property {String} validateTrigger = [bind|submit] 校验触发器方式 默认 submit
* @value bind 发生变化时触发
* @value submit 提交时触发
* @property {String} labelPosition = [top|left] label 位置 默认 left
* @value top 顶部显示 label
* @value left 左侧显示 label
* @property {String} labelWidth label 宽度,默认 65px
* @property {String} labelAlign = [left|center|right] label 居中方式 默认 left
* @value left label 左侧显示
* @value center label 居中
* @value right label 右侧对齐
* @property {String} errShowType = [undertext|toast|modal] 校验错误信息提示方式
* @value undertext 错误信息在底部显示
* @value toast 错误信息toast显示
* @value modal 错误信息modal显示
* @event {Function} submit 提交时触发
*/
export default {
name: 'uniForms',
components: {},
model: {
prop: 'modelValue',
event: 'update:modelValue'
},
emits: ['update:modelValue', 'input', 'reset', 'validate', 'submit'],
props: {
// 即将弃用
value: {
type: Object,
default () {
return {};
}
},
// 替换 value 属性
modelValue: {
type: Object,
default () {
return {};
}
},
// 表单校验规则
rules: {
type: Object,
default () {
return {};
}
},
// 校验触发器方式,默认 关闭
validateTrigger: {
type: String,
default: ''
},
// label 位置,可选值 top/left
labelPosition: {
type: String,
default: 'left'
},
// label 宽度,单位 px
labelWidth: {
type: [String, Number],
default: ''
},
// label 居中方式,可选值 left/center/right
labelAlign: {
type: String,
default: 'left'
},
errShowType: {
type: String,
default: 'undertext'
},
border: {
type: Boolean,
default: false
}
},
data() {
return {
formData: {}
};
},
computed: {
dataValue() {
if (JSON.stringify(this.modelValue) === '{}') {
return this.value
} else {
return this.modelValue
}
}
},
watch: {
rules(newVal) {
// 如果规则发生变化,要初始化组件
this.init(newVal);
},
labelPosition() {
this.childrens.forEach(vm => {
vm.init()
})
}
},
created() {
// #ifdef VUE3
let getbinddata = getApp().$vm.$.appContext.config.globalProperties.binddata
if (!getbinddata) {
getApp().$vm.$.appContext.config.globalProperties.binddata = function(name, value, formName) {
if (formName) {
this.$refs[formName].setValue(name, value);
} else {
let formVm;
for (let i in this.$refs) {
const vm = this.$refs[i];
if (vm && vm.$options && vm.$options.name === 'uniForms') {
formVm = vm;
break;
}
}
if (!formVm) return console.error('当前 uni-froms 组件缺少 ref 属性');
formVm.setValue(name, value);
}
}
}
// #endif
// 存放watch 监听数组
this.unwatchs = [];
// 存放子组件数组
this.childrens = [];
// 存放 easyInput 组件
this.inputChildrens = [];
// 存放 dataCheckbox 组件
this.checkboxChildrens = [];
// 存放规则
this.formRules = [];
this.init(this.rules);
},
// mounted() {
// this.init(this.rules)
// },
methods: {
init(formRules) {
// 判断是否有规则
if (Object.keys(formRules).length === 0) {
this.formData = this.dataValue
return
};
this.formRules = formRules;
this.validator = new Validator(formRules);
this.registerWatch();
},
// 监听 watch
registerWatch() {
// 取消监听,避免多次调用 init 重复执行 $watch
this.unwatchs.forEach(v => v());
this.childrens.forEach((v) => {
v.init()
})
// watch 每个属性 ,需要知道具体那个属性发变化
Object.keys(this.dataValue).forEach(key => {
let watch = this.$watch(
'dataValue.' + key,
value => {
if (!value) return
// 如果是对象 ,则平铺内容
if (value.toString() === '[object Object]') {
for (let i in value) {
let name = `${key}[${i}]`;
this.formData[name] = this._getValue(name, value[i]);
}
} else {
this.formData[key] = this._getValue(key, value);
}
}, {
deep: true,
immediate: true
}
);
this.unwatchs.push(watch);
});
},
/**
* 公开给用户使用
* 设置校验规则
* @param {Object} formRules
*/
setRules(formRules) {
this.init(formRules);
},
/**
* 公开给用户使用
* 设置自定义表单组件 value 值
* @param {String} name 字段名称
* @param {String} value 字段值
*/
setValue(name, value, callback) {
let example = this.childrens.find(child => child.name === name);
if (!example) return null;
value = this._getValue(example.name, value);
this.formData[name] = value;
example.val = value;
this.$emit('input', Object.assign({}, this.value, this.formData));
this.$emit('update:modelValue', Object.assign({}, this.value, this.formData));
return example.triggerCheck(value, callback);
},
/**
* 表单重置
* @param {Object} event
*/
resetForm(event) {
this.childrens.forEach(item => {
item.errMsg = '';
const inputComp = this.inputChildrens.find(child => child.rename === item.name);
if (inputComp) {
inputComp.errMsg = '';
inputComp.$emit('input', inputComp.multiple ? [] : '');
inputComp.$emit('update:modelValue', inputComp.multiple ? [] : '');
}
});
this.childrens.forEach(item => {
if (item.name) {
this.formData[item.name] = this._getValue(item.name, '');
}
});
this.$emit('input', this.formData);
this.$emit('update:modelValue', this.formData);
this.$emit('reset', event);
},
/**
* 触发表单校验,通过 @validate 获取
* @param {Object} validate
*/
validateCheck(validate) {
if (validate === null) validate = null;
this.$emit('validate', validate);
},
/**
* 校验所有或者部分表单
*/
async validateAll(invalidFields, type, keepitem, callback) {
let childrens = []
for (let i in invalidFields) {
const item = this.childrens.find(v => v.name === i)
if (item) {
childrens.push(item)
}
}
if (!callback && typeof keepitem === 'function') {
callback = keepitem;
}
let promise;
if (!callback && typeof callback !== 'function' && Promise) {
promise = new Promise((resolve, reject) => {
callback = function(valid, invalidFields) {
!valid ? resolve(invalidFields) : reject(valid);
};
});
}
let results = [];
let newFormData = {};
if (this.validator) {
for (let key in childrens) {
const child = childrens[key];
let name = child.isArray ? child.arrayField : child.name;
if (child.isArray) {
if (child.name.indexOf('[') !== -1 && child.name.indexOf(']') !== -1) {
const fieldData = child.name.split('[');
const fieldName = fieldData[0];
const fieldValue = fieldData[1].replace(']', '');
if (!newFormData[fieldName]) {
newFormData[fieldName] = {};
}
newFormData[fieldName][fieldValue] = this._getValue(name, invalidFields[name]);
}
} else {
newFormData[name] = this._getValue(name, invalidFields[name]);
}
const result = await child.triggerCheck(invalidFields[name], true);
if (result) {
results.push(result);
if (this.errShowType === 'toast' || this.errShowType === 'modal') break;
}
}
} else {
newFormData = invalidFields
}
if (Array.isArray(results)) {
if (results.length === 0) results = null;
}
if (Array.isArray(keepitem)) {
keepitem.forEach(v => {
newFormData[v] = this.dataValue[v];
});
}
if (type === 'submit') {
this.$emit('submit', {
detail: {
value: newFormData,
errors: results
}
});
} else {
this.$emit('validate', results);
}
callback && typeof callback === 'function' && callback(results, newFormData);
if (promise && callback) {
return promise;
} else {
return null;
}
},
submitForm() {},
/**
* 外部调用方法
* 手动提交校验表单
* 对整个表单进行校验的方法,参数为一个回调函数。
*/
submit(keepitem, callback, type) {
for (let i in this.dataValue) {
const itemData = this.childrens.find(v => v.name === i);
if (itemData) {
if (this.formData[i] === undefined) {
this.formData[i] = this._getValue(i, this.dataValue[i]);
}
}
}
if (!type) {
console.warn('submit 方法即将废弃,请使用validate方法代替!');
}
return this.validateAll(this.formData, 'submit', keepitem, callback);
},
/**
* 外部调用方法
* 校验表单
* 对整个表单进行校验的方法,参数为一个回调函数。
*/
validate(keepitem, callback) {
return this.submit(keepitem, callback, true);
},
/**
* 部分表单校验
* @param {Object} props
* @param {Object} cb
*/
validateField(props, callback) {
props = [].concat(props);
let invalidFields = {};
this.childrens.forEach(item => {
if (props.indexOf(item.name) !== -1) {
invalidFields = Object.assign({}, invalidFields, {
[item.name]: this.formData[item.name]
});
}
});
return this.validateAll(invalidFields, 'submit', [], callback);
},
/**
* 对整个表单进行重置,将所有字段值重置为初始值并移除校验结果
*/
resetFields() {
this.resetForm();
},
/**
* 移除表单项的校验结果。传入待移除的表单项的 prop 属性或者 prop 组成的数组,如不传则移除整个表单的校验结果
*/
clearValidate(props) {
props = [].concat(props);
this.childrens.forEach(item => {
const inputComp = this.inputChildrens.find(child => child.rename === item.name);
if (props.length === 0) {
item.errMsg = '';
if (inputComp) {
inputComp.errMsg = '';
}
} else {
if (props.indexOf(item.name) !== -1) {
item.errMsg = '';
if (inputComp) {
inputComp.errMsg = '';
}
}
}
});
},
/**
* 把 value 转换成指定的类型
* @param {Object} key
* @param {Object} value
*/
_getValue(key, value) {
const rules = (this.formRules[key] && this.formRules[key].rules) || [];
const isRuleNum = rules.find(val => val.format && this.type_filter(val.format));
const isRuleBool = rules.find(val => (val.format && val.format === 'boolean') || val.format === 'bool');
// 输入值为 number
if (isRuleNum) {
value = isNaN(value) ? value : value === '' || value === null ? null : Number(value);
}
// 简单判断真假值
if (isRuleBool) {
value = !value ? false : true;
}
return value;
},
/**
* 过滤数字类型
* @param {Object} format
*/
type_filter(format) {
return format === 'int' || format === 'double' || format === 'number' || format === 'timestamp';
}
}
};
</script>
<style scoped></style>