【发布时间】：2016-02-29 14:56:30
【问题描述】：
我正在尝试弄清楚如何在多个指令中保存多个表单并对其做出反应。
给你一个简短的概述： Screenshot of the current view
我有三个包含表单的选项卡和第四个包含 JsTree（组）的选项卡。三个选项卡中的每一个都包含一个指令，该指令又包含一个 Formly 表单。 选项卡由一个主指令包裹，该指令包含一个页脚指令，右下角有保存和取消按钮。
主指令：
/**
* Displays the ui for editing a specific user
*/
export function UserDetailsDirective() {
class UserDetailsDirective {
/*@ngInject*/
constructor(
$stateParams,
userService,
formlyChangeService
) {
this.currentUser = this.currentUser || {};
this.originalUser = this.originalUser || {};
this.userForms = {
mainData: {},
personalData: {},
basicSettings: {}
};
this.savingAllowed = true;
/* Second try: Registering a callback at the change service, which will be executed on any field change in the passed form (mainData) */
formlyChangeService.onFormChange('mainData', () => {
console.log('test123');
console.log('this123', this);
console.log('this.userForms.mainData.api.isValid()', this.userForms.mainData.api.isValid());
});
if ($stateParams.id > 0) {
userService.getUser($stateParams.id).then((userData) => {
userData.Birthday = new Date(userData.Birthday);
this.currentUser = userData;
this.breadcrumbData = [...];
})
}
}
onSave(controller) {
alert('on save');
console.log('controller', controller);
}
}
return {
restrict: 'E',
templateUrl: 'components/usermanagement/edit/user-details/user-details.directive.html',
controller: UserDetailsDirective,
controllerAs: 'controller',
bindToController: true
}
}<breadcrumb [...]></breadcrumb>
<ul class="nav nav-tabs">
<li class="active"><a data-toggle="tab" data-target="#mainData">Account data</a></li>
<li><a data-toggle="tab" data-target="#personalData">Personal data</a></li>
<li><a data-toggle="tab" data-target="#basicSettings">Settings</a></li>
<li><a data-toggle="tab" data-target="#userGroupAssignment">Groups</a></li>
</ul>
<div class="row">
<div class="col-lg-6">
<div class="tab-content">
<div id="mainData" class="tab-pane fade in active">
<main-data user="controller.currentUser"></main-data>
</div>
<div id="personalData" class="tab-pane fade">
<personal-data user="controller.currentUser"></personal-data>
</div>
<div id="basicSettings" class="tab-pane fade">
<basic-settings user="controller.currentUser"></basic-settings>
</div>
<div id="userGroupAssignment" class="tab-pane fade">
<group-assignment user="controller.currentUser"></group-assignment>
</div>
</div>
</div>
<div class="col-lg-6">
[...] <!-- Right column -->
</div>
</div>
<!-- Footer -->
<user-details-footer
on-save="controller.onSave(controller)"
saving-allowed="controller.savingAllowed"
></user-details-footer>页脚指令
/**
* Displays the user details footer
*/
export function UserDetailsFooterDirective() {
class UserDetailsFooterDirective {
/*@ngInject*/
constructor(
$state,
Notification,
$translate
) {
this.state = $state;
this.notification = Notification;
this.translate = $translate;
this.savingAllowed = this.savingAllowed || false;
}
/**
* Event that is triggered on save button click
*
* Propagates to the parent controller via attribute binding
*/
saveEvent() {
if (typeof this.onSave === 'function') {
this.onSave();
}
}
/**
* Navigates to the user list
*/
goToUserList() {
this.state.go('userList');
}
}
return {
restrict: 'E',
templateUrl: 'components/usermanagement/edit/user-details-footer/user-details-footer.directive.html',
controller: UserDetailsFooterDirective,
controllerAs: 'controller',
bindToController: true,
scope: {
onSave: '&?',
savingAllowed: '=?'
}
}
}<nav class="navbar navbar-fixed-bottom">
<div class="container-fluid pull-right">
<button class="btn btn-default" ng-click="controller.goToUserList()"><i class="fontIcon fontIconX"></i> Cancel</button>
<button class="btn btn-primary" ng-disabled="controller.savingAllowed !== true" ng-click="controller.saveEvent()"><i class="fontIcon fontIconSave"></i> Save</button>
</div>
</nav>第一个标签的指令
/**
* Displays the contents of the tab "Account data"
*/
export function MainDataDirective() {
class MainDataDirective {
/*@ngInject*/
constructor(
formlyFormService,
mainDataFieldProviders,
$state,
userSubmitService,
$timeout,
formlyChangeService,
$scope
) {
this.state = $state;
this.$timeout = $timeout;
this.userSubmitService = userSubmitService;
this.model = {};
this.originalUser = this.originalUser || {};
this.fields = [];
this.form = null;
var that = this;
/* Third try: Watching the form instance => partial success */
this.watch('formMainData', function(x, y, form) {
console.log('formMainData', form);
that.form = form;
form.watch('$invalid', function(foo, bar, value) {
/* This will react on field changes but it seems really dirty to me */
console.log('$invalid', arguments);
});
});
formlyFormService.getFormConfiguration(mainDataFieldProviders).then((result) => {
/* Here the formly fields are set */
this.fields = result;
/* Second try: A service which provides a callback that will be executed on field invalidation => no success */
formlyChangeService.registerFields(this.fields, 'mainData');
}, (error) => {
console.error('getMainDataFields error:', error);
});
this.api = {
isValid: angular.bind(this, this.isValid),
submit: angular.bind(this, this.onSubmit)
}
}
/* First try to get the validity of the fields => no success */
isValid() {
//return this.$timeout(() => {
let isValid = true;
this.fields.some((field) => {
if (
field.validation.errorExistsAndShouldBeVisible === true
|| field.validation.serverMessages.length > 0
) {
isValid = false;
return true;
}
});
//return isValid;
//}, 10);
return isValid;
}
/**
* Method triggered by the formSubmit event
*/
onSubmit() {
this.userSubmitService.submitUser(this.fields, this.model);
}
}
return {
restrict: 'E',
templateUrl: 'components/usermanagement/edit/main-data/main-data.directive.html',
controller: MainDataDirective,
controllerAs: 'controller',
bindToController: true,
scope: {
originalUser: '=user',
api: '=?'
},
link: (scope) => {
scope.$watch('controller.originalUser', (newValue) => {
if (newValue.hasOwnProperty('ID')) {
scope.controller.model = angular.copy(newValue);
}
});
}
}
}<form name="controller.form" ng-submit="controller.onSubmit()" class="form-horizontal" novalidate>
<formly-form form="controller.formMainData" model="controller.model" fields="controller.fields" ></formly-form>
</form>第二次尝试：FormlyChangeService => 在验证之前触发了更改事件 => 没有成功
export /*@ngInject*/ function FormlyChangeService() {
let callbacks = [];
return {
triggerFormChangeEvent: triggerFormChangeEvent,
registerFields: registerFields,
onFormChange: onFormChange
};
function triggerFormChangeEvent(value, options) {
callbacks.forEach((callback) => {
if (
typeof callback === 'function'
&& callback.formDirective === options.templateOptions.formDirective
) {
callback();
}
});
}
function onFormChange(formDirective, callback) {
callback.formDirective = formDirective;
callbacks.push(callback);
}
function registerField(fieldConfig) {
fieldConfig.templateOptions.changeEvents.push(
triggerFormChangeEvent
);
}
function registerFields(fieldConfigs, formDirective) {
fieldConfigs.forEach((fieldConfig) => {
fieldConfig.templateOptions.formDirective = formDirective;
registerField(fieldConfig);
fieldConfig.watcher = {
listener: function() {
console.log('listener', arguments);
}
};
console.log('fieldConfig', fieldConfig);
fieldConfig.watch('$valid', function() {
console.log('valid field', arguments);
});
});
}
}Formly 表单由主指令提供的用户模型提供。
我必须同时保存所有四个选项卡，因为必须存在几个必填字段才能保存输入的记录。 现在是棘手的部分：
如果模型未更改或任何形式的任何字段发生错误，我希望禁用保存按钮。我也想知道错误来自哪一种形式。
我想到的是 Formly 字段配置中的事件或观察者或类似的东西。
我已经在字段配置上尝试了 onChange 事件，但它在字段验证运行之前被触发，所以我不会得到该字段的当前错误状态。
错误状态必须向上传递到主指令，从那里向下传递到保存按钮。
谁能帮我获取表单（甚至更好的相应字段）告诉主指令有一个无效字段？
如此复杂的任务很难举例说明，所以如果有任何晦涩难懂的地方，请告诉我。
非常感谢您。
朱利安
【问题讨论】：
标签： javascript angularjs angular-formly