Ajax加载的模板
我在处理这个案件的各种可能性之间迷失了方向:假设我们有以下限制:Ajax加载的模板,ajax,knockout.js,sammy.js,Ajax,Knockout.js,Sammy.js,我在处理这个案件的各种可能性之间迷失了方向:假设我们有以下限制: 击倒 带有Sammy.js的SPA-通过Ajax加载Html 我的页面: +-------------------------------+ | #navigation | +---------+---------------------+ | #sidebar| #content | | | | |
- 击倒
- 带有Sammy.js的SPA-通过Ajax加载Html
+-------------------------------+
| #navigation |
+---------+---------------------+
| #sidebar| #content |
| | |
| | |
| | |
+---------+---------------------+
目前,我有一个appViewModel,它处理我网站中所有共享元素的数据绑定:#导航和#侧边栏。这个appViewModel已经在我的网站的每个页面上使用
appViewModel = function () {
var self = this;
self.sidebarItemArray = ko.observableArray([x, y, z]);
self.currentRoute = ko.observable();
...
self.updateView = function(path, currentRoute) {
return $.get(path, function( data ) {
var $data = $(data);
// Updates #content, TITLE and update the currentRoute observable.
$( '#content' ).replaceWith($data.find('#content'));
document.title = $data.filter('title').text();
self.currentRoute(currentRoute);
}, 'html');
}
Sammy(function() {
this.get(':link'', function() {
self.updateView(this.path, this.params.link);
});
}).run();
}
ko.applyBindings(new appViewModel());
现在,假设内容是通过Ajax调用加载的DOM。每次用户单击#导航或#侧边栏中的链接时,Sammy.js都会截取它,然后更新内容。问题在于,内容中的新DOM本身具有数据绑定
1) 首先,我应该使用#content上的html数据绑定、replacetwith(如上所述)还是使用带有自定义函数的模板绑定来获取模板?
()? 这里的最佳做法是什么
2) Sammy在appViewModel中的必要生命(如文档中或其他地方)是否可以
3) 一旦updateView方法完成,您将如何绑定新的DOM?像下面这样?因为已经在没有第二个参数的情况下调用了ko.applyBindings,是否存在重新绑定某些DOM的风险
ko.applyBindings(new routeSpecificViewModel() , document.getElementById("content"));
感谢您的帮助。一个简单的解决方案是将页面的viewmodel设置为可观察的,并按需加载。使用变量记录是否调用了ko.applyBindings。来自淘汰spa框架的示例:
/*! knockout-spa (https://github.com/onlyurei/knockout-spa) * Copyright 2015-2016 Cheng Fan * MIT Licensed (https://raw.githubusercontent.com/onlyurei/knockout-spa/master/LICENSE) */
define(['app/shared/root-bindings', 'framework/page-disposer', 'ko', 'sugar'], function (
RootBindings, PageDisposer, ko) {
var initialRun = true;
var Page = {
init: function (name, data, controller, path) {
Page.loading(false);
name = name.toLowerCase();
if ((Page.page().name == name) && (Page.page().data == data)) { // if the requested page is the same page, immediately call controller without going further
if (controller) {
controller(data);
}
document.title = Page.title();
if (Page.initExtra) {
Page.initExtra(name, data, controller);
}
return data;
}
var autoDispose = (Page.page().data.dispose && Page.page().data.dispose(Page)) || true; // if the requested page is not the same page, dispose current page first before swap to the new page
if (autoDispose !== false) {
// auto-dispose page's exposed observables and primitive properties to initial values. if not desired, return
// false in dispose function to suppress auto-disposal for all public properties of the page, or make the
// particular properties private
PageDisposer.dispose(Page.page().data);
}
PageDisposer.init(data); //store initial observable and primitive properties values of the page
var initialized = (data.init && data.init(Page)) || true; // init view model and call controller (optional) before template is swapped-in
if (initialized === false) {
return false; // stop initialization if page's init function return false (access control, etc.)
}
if (controller) {
controller(data);
}
Page.pageClass([name, ('ontouchstart' in document.documentElement) ? 'touch' : 'no-touch'].join(' '));
Page.page({
name: name,
data: data,
path: path
}); // to test if template finished rendering, use afterRender binding in the template binding
document.title = Page.title();
if (Page.initExtra) {
Page.initExtra(name, data, controller); // useful for common init tasks for all pages such as anaylitics page view tracking, can be set in RootBindings
}
if (initialRun) {
ko.applyBindings(Page, document.getElementsByTagName('html')[0]); // apply binding at root node to be able to bind to anywhere
initialRun = false;
}
return data;
},
page: ko.observable({
name: '', // name of the page - auto-set by the framework, no need to worry
data: {
init: function () {}, // preparation before the page's template is rendered, such as checking access control, init/instantiate modules used by the page, etc.
dispose: function () {} // properly dispose the page to prevent memory leaks and UI leftovers (important for SPA since page doesn't refresh between page views) - remove DOM element event listeners, dispose knockout manual subscriptions, etc.
}
}),
pageClass: ko.observable(''),
loading: ko.observable(false),
title: function () {
return Page.page().name.titleize(); // override in RootBindings as needed
}
};
Object.merge(Page, RootBindings); // additional root bindings as needed by the app
return Page;
});
在Knockout、Require、Director、jQuery和Sugar之上构建的一个小型但成熟的SPA框架。
现场演示:因为这已经有一年多的历史了,我想问一下您是否有过解决方案?我面临着同样的困境。老问题:-)我最终使用了淘汰型AMD和requireJs以及flatiron/director作为路由器。这很有魅力。使用此堆栈将创建避免这些问题的约束。