我使用aurelia-validate,如果我使用变量,我的验证工作正常,但我需要它来验证对象的属性而不是变量:
以下是有效的:
import {Validation} from 'aurelia-validation';
import {ensure} from 'aurelia-validation';
import {ItemService} from './service';
export class EditItem {
static inject() {
return [Validation, ItemService];
}
@ensure(function(it){
it.isNotEmpty()
.hasLengthBetween(3,10);
})
name = '';
@ensure(function(it){
it.isNotEmpty()
.hasMinLength(10)
.matches(/^https?:\/\/.{3,}$/) //looks like a url
.matches(/^\S*$/); //no spaces
})
url = '';
constructor(validation, service) {
this.validation = validation.on(this);
this.service = service;
}
activate(params){
return this.service.getItem(params.id).then(res => {
console.log(res);
this.name = res.content.name; //populate
this.url = res.content.url;
});
}
update() {
this.validation.validate().then(
() => {
var data = {
name: this.name,
url: this.url
};
this.service.updateItem(data).then(res => {
this.message = "Thank you!";
})
}
);
}
}
这是我尝试做的事情(但是没有工作)......我也不确定保持房产的性能是否更好class或者有一个名为this.item
的属性,它包含属性(这是典型的角度方式):
import {Validation} from 'aurelia-validation';
import {ensure} from 'aurelia-validation';
import {ItemService} from './service';
export class EditItem {
static inject() {
return [Validation, ItemService];
}
@ensure(function(it){
it.isNotEmpty()
.hasLengthBetween(3,10);
})
this.item.name; //no assignment here should happen
@ensure(function(it){
it.isNotEmpty()
.hasMinLength(10)
.matches(/^https?:\/\/.{3,}$/) //looks like a url
.matches(/^\S*$/); //no spaces
})
this.item.url; //no assignment?
constructor(validation, service) {
this.validation = validation.on(this);
this.service = service;
this.item = null;
}
activate(params){
return this.service.getItem(params.id).then(res => {
console.log(res);
this.item = res.content; //populate with object from api call
});
}
update() {
this.validation.validate().then(
() => {
var data = {
name: this.item.name,
url: this.item.url
};
this.service.updateItem(data).then(res => {
this.message = "Thank you!";
})
}
);
}
}
有人可以在这里给我一些关于如何对现有对象使用验证器的指导(对于编辑页面)吗?
答案 0 :(得分:4)
验证适用于各种情况,但使用@ensure装饰器只能用于在简单属性上声明规则(就像你发现的那样)。
...因此
选项a:使用流畅的API'ensure'方法替换ensure装饰器,这支持'嵌套'或'复杂'绑定路径,例如:
import {Validation} from 'aurelia-validation';
import {ItemService} from './service';
export class EditItem {
static inject() {
return [Validation, ItemService];
}
constructor(validation, service) {
this.validation = validation.on(this)
.ensure('item.url')
.isNotEmpty()
.hasMinLength(10)
.matches(/^https?:\/\/.{3,}$/) //looks like a url
.matches(/^\S*$/)
.ensure('item.name')
.isNotEmpty()
.hasLengthBetween(3,10);
this.service = service;
this.item = null;
}
activate(params){
return this.service.getItem(params.id).then(res => {
console.log(res);
this.item = res.content; //populate with object from api call
});
}
update() {
this.validation.validate().then(
() => {
var data = {
name: this.item.name,
url: this.item.url
};
this.service.updateItem(data).then(res => {
this.message = "Thank you!";
})
}
);
}
}
注意:您甚至可以在设置项目之前设置验证。很酷,没有?
选项b:由于验证规则是特定于项目的,因此您可以使用该类中的@ensure装饰器将验证规则移到项目类中。
然后,您可以在检索项目后在VM中设置验证:this.validation = validation.on(this.item);
或者,您的服务可以在将项目返回到VM并将其作为模型的固有部分时设置验证:{ {1}}
选项a最简单,似乎符合您的经验。选项b更易于维护,因为模型的验证规则将存在于模型上,而不是视图模型上。但是,如果您选择选项b,you might have to adjust your HTML a bit to make sure validation hints appear。
答案 1 :(得分:1)
使用验证器的.on方法将规则应用于对象属性。
在检索名为stock的对象后调用以下示例,它验证数量不为空且仅为数字。希望这会有所帮助...
let stock = {
name: 'some name'
minimumQuantity: '1'
};
applyRules() {
ValidationRules
.ensure((m: EditStock) => m.minimumQuantity)
.displayName("Minimum Quantity")
.required()
.withMessage(`\${$displayName} cannot be blank.`)
.matches( /^[0-9]*$/)
.withMessage(`\${$displayName} must be numeric only.`)
.on(this.stock);
}