我无法在编辑模型视图上进行验证，该视图在其视图模型的activate方法中绑定了数据。
我有一个created.ts，它适用于具有相同字段的对象。这个文件几乎有相同的代码 - 例外是因为这个是一个创建，所以不需要加载任何数据。在这种情况下，验证工作正常。
如果我在激活方法中注释为编辑模型视图加载数据的代码 - 验证工作正常。
毋庸置疑，我是SPA，Aurelia和TypeScript的新手，需要一些帮助!!
下面是edit.ts中的代码
import { ContactRepository } from "./contactRepository";
import { autoinject } from "aurelia-framework";
import { ContactForEditDto } from "./contactForEditDto";
import { json } from "aurelia-fetch-client";
import { inject, NewInstance } from "aurelia-dependency-injection";
import { ValidationRules, ValidationControllerFactory, validateTrigger,
Validator } from "aurelia-validation";
@autoinject
export class Edit {
public saveStatusMessage: string;
public isSaved: number = -1;
private controller = null;
private validator = null;
public canSave: boolean = false;
constructor(public contactForEdit: ContactForEditDto, private repository:
ContactRepository, private controllerFactory: ValidationControllerFactory,
public contactFullName: string, validator: Validator) {
console.log("starting edit controller");
this.controller = controllerFactory.createForCurrentScope(validator);
this.controller.validateTrigger = validateTrigger.changeOrBlur;
this.validator = validator;
this.controller.subscribe(event => this.validateWhole());
ValidationRules
.ensure((c: ContactForEditDto) => c.contactFirstName)
.displayName("First Name")
.required().withMessage("\${$displayName} cannot be empty.")
.maxLength(50).withMessage("\${$displayName} cannot have more than 50 characters.")
.ensure((c: ContactForEditDto) => c.contactLastName)
.displayName("Last Name")
.required().withMessage("\${$displayName} cannot be empty.")
.maxLength(50).withMessage("\${$displayName} cannot have more than 50 characters.")
.ensure((c: ContactForEditDto) => c.contactEmailAddress)
.displayName("Email Address")
//.required().withMessage("\${$displayName} cannot be empty.")
.email().withMessage("\${$displayName} needs to be in a correct email address format.")
.maxLength(50).withMessage("\${$displayName} cannot have more than 50 characters.")
.ensure((c: ContactForEditDto) => c.contactPhoneNumber)
.displayName("Phone Number")
.required().withMessage("\${$displayName} cannot be empty.")
.maxLength(12).withMessage("\${$displayName} cannot have more than 12 characters.")
.matches(/\d{3}-\d{3}-\d{4}/).withMessage("'${$value}' is not a valid \${$displayName}. Please enter a phone in the format xxx-xxx-xxxx")
.on(ContactForEditDto);
}
// source https://www.jujens.eu/posts/en/2017/Jan/24/aurelia-validation/
workaround 3
validateWhole() {
this.validator.validateObject(this.contactForEdit)
.then(results => this.canSave = results.every(result => result.valid));
}
// Returning data from here because I can return a promise
// and let the router know when i have retrieved my initial data.
// Activate receives a params object as defined in the route.
activate(params) {
console.log("ACTIVATE ON EDIT PARAMS:" + params);
this.repository
.getById(params.id)
.then(data => {
console.log(data);
this.contactForEdit = data;
this.contactFullName = this.contactForEdit.contactLastName + ", " +
this.contactForEdit.contactFirstName; // This needs to come from a method
in
contact.
});
}
edit() {
this.saveStatusMessage = "";
this.isSaved = -1;
// This will be an edit
if (this.contactForEdit.contactId >= 1) {
this.repository
.update(this.contactForEdit)
.then(response => {
if (((response.status == 201) || (response.status == 204))
&& (response.ok == true)) {
this.isSaved = 1;
this.saveStatusMessage = "Successfully saved the contact";
}
else {
this.isSaved = 0;
//response.json().then(json => this.retVal = json);
//TODO: get more details about the error.
if (response.status == 400) {
this.saveStatusMessage = "Unable to save the contact. Please make sure that you entered correct values for every field and try again.";
}
else {
this.saveStatusMessage = "Unable to save the contact.";
}
}
});
}
}
clearContactFields() {
this.contactForEdit = new ContactForEditDto(-1, "", "", "", "");
}
}
以下是edit.html中的代码
<template>
<form id="editContact" submit.delegate="edit()">
<!-- placeholder for status messages. If equal to 1 display it. If equals to
-1 or 1 hide this.-->
<div id="successStatusMessage" class.bind="isSaved == 1 ? 'visible' :
'hidden'">
<div id="divSuccessMessage" class="alert alert-success">
<a href="#" class="close" data-dismiss="alert">×</a>
<!--<span class="glyphicon glyphicon glyphicon-ok" aria-hidden="true">
</span> TODO: How to get the glyphicon working? -->
<span class="sr-only"> Success:</span> ${saveStatusMessage}
</div>
</div>
<!-- placeholder for status messages. If equal to 0 is in error, so dislay error message. if equals to -1 or 1 hide this.-->
<div id="errorStatusMessage" class.bind="isSaved == 0 ? 'visible' : 'hidden'">
<!-- placeholder for status messages. -->
<div id="divErrorMessage" class="alert alert-danger">
<a href="#" class="close" data-dismiss="alert">×</a>
<!-- <span class="glyphicon glyphicon-exclamation-sign" aria-hidden="true"></span> TODO: class="glyphicon glyphicon-exclamation-sign" how to get these in here for class? -->
<span class="sr-only"> Error:</span> ${saveStatusMessage}
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading">
<div class="panel-title">
<!--<div if.bind="isCreate">
"Create a Contact"
</div>
<div if.bind="!isCreate">
Edit ${contactForEdit.contactFirstName}
</div>-->
${ "Edit " + contactFullName }
</div>
</div>
<div class="panel-body">
<div class="form-horizontal">
<div class="form-group" validation-errors.bind="editFirstNameErrors"
class.bind="editFirstNameErrors.length ? 'has-error' : ''">
<label class="control-label col-md-2">First Name: </label>
<div class="col-md-10">
<input type="text"
placeholder="First Name"
class="form-control"
value.bind="contactForEdit.contactFirstName & validate" required /> <!-- NO ${} !!!-->
<span class="help-block" repeat.for="editErrorInfo of editFirstNameErrors">
${editErrorInfo.error.message}
</span>
</div>
</div>
<div class="form-group" validation-errors.bind="editLastNameErrors"
class.bind="editLastNameErrors.length ? 'has-error' : ''">
<label class="control-label col-md-2">Last Name: </label>
<div class="col-md-10">
<input type="text"
placeholder="Last Name"
class="form-control"
value.bind="contactForEdit.contactLastName & validate" required /> <!-- NO ${} !!!-->
<span class="help-block" repeat.for="editErrorInfo of editLastNameErrors">
${editErrorInfo.error.message}
</span>
</div>
</div>
<div class="form-group" validation-errors.bind="emailErrors"
class.bind="editEmailErrors.length ? 'has-error' : ''">
<label for="emailAddress" class="control-label col-md-2">Email: </label>
<div class="col-md-10">
<input id="emailAddress"
type="text"
placeholder="Email Address (format: [email protected])"
class="form-control"
value.bind="contactForEdit.contactEmailAddress & validate" /> <!-- NO ${} !!!-->
<span class="help-block" repeat.for="editErrorInfo of editEmailErrors">
${editErrorInfo.error.message}
</span>
</div>
</div>
<div class="form-group" validation-errors.bind="editPhoneErrors"
class.bind="editPhoneErrors.length ? 'has-error' : ''">
<label class="control-label col-md-2">Phone: </label>
<div class="col-md-10">
<input type="text"
placeholder="Phone Number (format: xxx-xxx-xxxx)"
class="form-control"
value.bind="contactForEdit.contactPhoneNumber & validate" required /> <!-- NO ${} !!!-->
<span class="help-block" repeat.for="editErrorInfo of editPhoneErrors">
${editErrorInfo.error.message}
</span>
</div>
</div>
<button type="submit" class="btn btn-default ${canSave ? '' : 'disabled'}">
<!-- Look at click.dependent when there are child with buttons calling this.-->
Save
</button>
<!-- AA-10-17-17 - replaced with errors per input field. <ul for.bind="controller.errors">
<li repeat.for="error of controller.errors" style="color:red">
${error.message}
</li>
</ul>-->
</div>
</div>
</div>
</form>
<div>
<a route-href="route: home"
class="btn btn-default">
Back to list
</a>
</div>
</template>
我希望这是因为这段代码：
.getById(params.id)
.then(data => {
console.log(data);
this.contactForEdit = data;
你的验证是针对ContactForEditDto对象的，但我的猜测是你的存储库正在返回一个强制转换为ContactForEditDto的JSON对象，所以它根本就不是一个类。尝试像
console.log(data);
this.contactForEdit = new ContactForEditDto(data.id, data.firstname ..etc..);
或
console.log(data);
this.contactForEdit = Object.assign(new ContactForEditDto(), data);
这样的东西
我们遇到了类似的问题，并通过在将远程数据分配到本地字段后设置验证来解决它。在您的代码中，您将在this.contactForEdit = data;之后设置验证规则