form.vue
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<template>
<form class="el-form" :class="[
labelPosition ? 'el-form--label-' + labelPosition : '',
{ 'el-form--inline': inline }
]">
<slot></slot>
</form>
</template>
<script>
import objectAssign from 'element-ui/src/utils/merge';
export default {
name: 'ElForm',
componentName: 'ElForm',
provide() {
return {
elForm: this
};
},
props: {
model: Object,
rules: Object,
labelPosition: String,
labelWidth: String,
labelSuffix: {
type: String,
default: ''
},
inline: Boolean,
inlineMessage: Boolean,
statusIcon: Boolean,
showMessage: {
type: Boolean,
default: true
},
size: String,
disabled: Boolean,
validateOnRuleChange: {
type: Boolean,
default: true
},
hideRequiredAsterisk: {
type: Boolean,
default: false
}
},
watch: {
rules() {
if (this.validateOnRuleChange) {
this.validate(() => {});
}
}
},
data() {
return {
fields: []
};
},
created() {
this.$on('el.form.addField', (field) => {
if (field) {
this.fields.push(field);
}
});
/* istanbul ignore next */
this.$on('el.form.removeField', (field) => {
if (field.prop) {
this.fields.splice(this.fields.indexOf(field), 1);
}
});
},
methods: {
resetFields() {
if (!this.model) {
console.warn('[Element Warn][Form]model is required for resetFields to work.');
return;
}
this.fields.forEach(field => {
field.resetField();
});
},
clearValidate(props = []) {
const fields = props.length
? (typeof props === 'string'
? this.fields.filter(field => props === field.prop)
: this.fields.filter(field => props.indexOf(field.prop) > -1)
) : this.fields;
fields.forEach(field => {
field.clearValidate();
});
},
validate(callback) {
if (!this.model) {
console.warn('[Element Warn][Form]model is required for validate to work!');
return;
}
let promise;
// if no callback, return promise
if (typeof callback !== 'function' && window.Promise) {
promise = new window.Promise((resolve, reject) => {
callback = function(valid) {
valid ? resolve(valid) : reject(valid);
};
});
}
let valid = true;
let count = 0;
// 如果需要验证的fields为空，调用验证时立刻返回callback
if (this.fields.length === 0 && callback) {
callback(true);
}
let invalidFields = {};
this.fields.forEach(field => {
field.validate('', (message, field) => {
if (message) {
valid = false;
}
invalidFields = objectAssign({}, invalidFields, field);
if (typeof callback === 'function' && ++count === this.fields.length) {
callback(valid, invalidFields);
}
});
});
if (promise) {
return promise;
}
},
validateField(props, cb) {
props = [].concat(props);
const fields = this.fields.filter(field => props.indexOf(field.prop) !== -1);
if (!fields.length) {
confirm.warn('[Element Warn]please pass correct props!');
return;
}
fields.forEach(field => {
field.validate('', cb);
});
}
}
};
</script>