如何延长MarionetteJS模块,以减轻code复制 [英] How to extend a MarionetteJS module to reduce code duplication
问题描述
我有一个通知栏是一个模块。非常类似于facebook的本机应用程序的通知栏。在此工具栏有3个区:
I've got a notifications toolbar which is a module. Very similar to the notifications toolbar in the facebook native app. In this toolbar are 3 regions:
- InvitesRegion
- RequestsRegion
- NotificationsRegion
每个这些区域都包含自己的模块(InvitesModule,RequestsModule,NotificationsModule)。每次,却拥有完全相同的功能:
Each of these regions contains their own module (InvitesModule, RequestsModule, NotificationsModule). Each, however, has the exact same functionality:
- 检查服务器新(邀请|请求|通知)
- 如果找到,更新相关联的区域
- 然后一大堆的其他功能(点击弹出的CollectionView等)
我可以写一个单独的模块,说InvitesModule,并有我的另两个扩展模块该模块,这样我就可以覆盖我需要的变量?
Can I write a single module, say the InvitesModule and have my other two module extend that module so that I can just overwrite the variable I need to?
感谢,并请让我知道,如果我能得到更清晰的
Thanks and please let me know if I can be more clear
推荐答案
为什么是的,是的,你可以!虽然木偶并不完全允许您创建一个基础模块本身,它允许你修改现有的模块。我们已经采取了利用这一点在我们的应用程序创建一个 ModuleDefaults
定义,我们使用的所有模板。下面是它如何工作的:
Why yes, yes you can! While Marionette doesn't exactly allow you to create a "base module" per se, it does allow you to modify an existing module. We've taken advantage of this in our application to create a ModuleDefaults
definition that we use for all templates. Here's how it works:
var ModuleDefaults = {
// Define baseline behavior to share among all modules
definition: function() {
this.foo = 'bar';
this.addInitializer(function() {
console.log(this.moduleName + ': do startup stuff');
});
}
};
现在,您可以创建简单地实现像这样这种行为模块:
Now you can create modules that simply implement this behavior like so:
// Create a module with the default implementation
App.module('Module1', ModuleDefaults.definition);
或者你可以创建一个覆盖此bevavior模块:
Or you can create a module that overrides this bevavior:
// Create another module with the default implementation
App.module('Module2', ModuleDefaults.definition);
// Provide customizations to second module:
App.module('Module2', function() {
// override existing behavior
this.foo = 'baz';
// add new behavior
this.addFinalizer(function() {
console.log(this.moduleName + ': cleanup stuff');
});
});
使用这种技术,证明第二个模块的富
属性覆盖:
App.start(); // -> Module1: do startup stuff
// -> Module2: do startup stuff
console.log(App.Module1.foo); // -> bar
console.log(App.Module2.foo); // -> baz
App.Module1.stop(); // ->
App.Module2.stop(); // -> Module2: cleanup stuff
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