我正在将我的 durandal 项目从 1.2.0 升级到版本 2.0.0。我已按照 durandal 文档 ( http://durandaljs.com/documentation/Conversion-Guide/ ) 中的步骤操作，应用程序现在正常运行。我看到的问题是我的激活回调不断被一遍又一遍地调用。
这是正在执行此操作的视图模型之一：
define(['services/datacontext', 'plugins/router', 'services/logger', 'services/model', 'services/images', 'services/pager'],
function (datacontext, router, logger, model, images, pager) {
var collaborators = ko.observableArray([]);
var filterString = ko.observable();
var pageHandler = new pager();
var activate = function (filter) {
return Q.all([datacontext.getAll(model.entityNames.songwriter + 's', "", collaborators, { orderBy: "firstName" })])
.then(dataRetrieved)
.then(activatePager);
function dataRetrieved() {
};
function activatePager() {
pageHandler.init.call(pageHandler, collaborators(), {
pageSize: 12,
filterCallback: function (item) {
var filter = filterString().toLowerCase();
var pred1 = item.fullName().toLowerCase().indexOf(filter) >= 0;
return pred1;
}
});
if (filter != null) {
filterString(filter);
pageHandler.applyFilter.call(pageHandler);
}
};
};
var deactivate = function () {
};
var vm = {
activate: activate,
deactivate: deactivate,
collaborators: pageHandler.displayItems,
title: 'Collaborators',
images: images,
router: router,
pager: pageHandler,
filterString: filterString
};
return vm;
});
有没有人见过这个？
这是 chrome 控制台输出：
编辑
这似乎并没有在所有视图模型上发生，这个很好..
define(['durandal/app', 'services/datacontext', 'plugins/router', 'services/logger', 'services/model', 'viewmodels/shared/leftnav', 'viewmodels/modals/imagecrop', 'services/images'],
function (app, datacontext, router, logger, model, leftnav, imagecrop, images) {
leftnav.area("Songwriter");
var songwriter = ko.observable();
var songwriterId = ko.observable();
var publishers = ko.observableArray([]);
var pros = ko.observableArray([]);
var activate = function (id) {
songwriterId(id);
leftnav.entityId(songwriterId());
return Q.all([datacontext.getEntityById(model.entityNames.songwriter, songwriterId(), "Publisher, Pro", songwriter),
datacontext.getAll(model.entityNames.publisher + 's', "", publishers),
datacontext.getAll(model.entityNames.pro + 's', "", pros)]);
};
var deactivate = function () {
if (datacontext.hasChanges()) {
datacontext.cancelChanges();
}
};
var saveClick = function () {
datacontext.saveChanges().then(saveComplete);
function saveComplete() {
router.navigateBack();
};
};
var cancelClick = function () {
router.navigateBack();
};
var imageUploaded = function (e) {
logger.logSuccess("Image Uploaded Successfully", e.response, "Profile", true);
songwriter().photoFilePath('/azure/profileimages/' + e.response);
app.showDialog(imagecrop, {
title: 'Crop Profile Image',
message: '<i class="icon-info-sign"></i> Your profile image needs to be cropped to ensure that it does not appear distorted.',
filePath: songwriter().photoFilePath()
}).then(appendCropInfo);
function appendCropInfo(coords) {
var path = songwriter().photoFilePath;
path(path() + '?crop=(' + coords.x + ',' + coords.y + ',' + coords.x2 + ',' + coords.y2 + ')');
};
};
var vm = {
activate: activate,
deactivate: deactivate,
songwriter: songwriter,
publishers: publishers,
pros: pros,
title: 'Songwriter',
cancelClick: cancelClick,
saveClick: saveClick,
imageUploaded: imageUploaded,
images: images
};
return vm;
});
编辑 - 堆栈跟踪
activate (details.js:11)
invoke (activator.js:52)
activate (activator.js:99)
(anonymous function) (activator.js:308)
(anonymous function) (jquery-2.0.3.js:3070)
fire (jquery-2.0.3.js:2914)
self.add (jquery-2.0.3.js:2960)
(anonymous function) (jquery-2.0.3.js:3069)
jQuery.extend.each (jquery-2.0.3.js:590)
(anonymous function) (jquery-2.0.3.js:3065)
jQuery.extend.Deferred (jquery-2.0.3.js:3126)
promise.then (jquery-2.0.3.js:3064)
(anonymous function) (activator.js:306)
(anonymous function) (jquery-2.0.3.js:3070)
fire (jquery-2.0.3.js:2914)
self.add (jquery-2.0.3.js:2960)
(anonymous function) (jquery-2.0.3.js:3069)
jQuery.extend.each (jquery-2.0.3.js:590)
(anonymous function) (jquery-2.0.3.js:3065)
jQuery.extend.Deferred (jquery-2.0.3.js:3126)
promise.then (jquery-2.0.3.js:3064)
(anonymous function) (activator.js:302)
(anonymous function) (jquery-2.0.3.js:3070)
fire (jquery-2.0.3.js:2914)
self.add (jquery-2.0.3.js:2960)
(anonymous function) (jquery-2.0.3.js:3069)
jQuery.extend.each (jquery-2.0.3.js:590)
(anonymous function) (jquery-2.0.3.js:3065)
jQuery.extend.Deferred (jquery-2.0.3.js:3126)
promise.then (jquery-2.0.3.js:3064)
(anonymous function) (activator.js:300)
jQuery.extend.Deferred (jquery-2.0.3.js:3126)
system.defer (system.js:218)
computed.activateItem (activator.js:285)
activateRoute (router.js:248)
handleGuardedRoute (router.js:303)
ensureActivation (router.js:313)
(anonymous function) (router.js:357)
(anonymous function) (jquery-2.0.3.js:3070)
fire (jquery-2.0.3.js:2914)
self.fireWith (jquery-2.0.3.js:3026)
deferred.(anonymous function) (jquery-2.0.3.js:3115)
(anonymous function) (system.js:256)
编辑 - 路线
路由配置如下：
{ route: 'songwriter/:id', moduleId: 'songwriter/details', nav: true, title: 'Profile', settings: { icon: 'icon-edit' } },