Ember.js新路由器:从父动态路由段访问序列化的对象 [英] Ember.js New Router: accessing serialized objects from parent dynamic route segments
问题描述
已经有一个类似的问题。
假设以下路由:
App.Router.map(function(match){
match /').to('index');
match('/ posts')。to('posts',function(match){
match('/')。to('postsIndex' );
match('/:post_id')。to('post',function(match){
match('/ comments')to('comments',function b $ b match('/')。to('commentsIndex');
match('/:comment_id')to('showComment');
});
}) ;
});
});
是否可以访问 post_id
和 comment_id
在 ShowCommentRoute
?否则我应该忘记我的模型中的复合键?
为什么 CommentsRoute#model(params)
和 CommentsIndexRoute
参数始终为空?如何检索发布
的评论?
运行示例(有控制台日志显示问题。
只有 PostRoute
将具有 params.post_id
只有 ShowCommentRoute
将具有 params.comment_id
,不会有 params.post_id
。
对于模型具有复合键的应用程序,这是不可接受的,如果我们转换到 showComment
一步一步,我们可以获得评论
实例:
code> App.ShowCommentRoute = Ember.Route.extend({
model:function(params){
var post_id = this.controllerFor('post')。get('content.id' );
return App.Comment.find(post_id,pa rams.comment_id);
}
});
但是,如果我们直接访问 / posts / 1 /评论/ 1
。在这种情况下, this.controllerFor('post')
始终未定义
。
- 如果您有嵌套的动态片段路由,则不能访问
* IndexRoute
PostRoute
和PostInderRoute
在这个例子中) - 很快,不可能获得
使用ember-1.0.0-rc.1现在可以直接访问url访问父路由的模型。
App.ShowCommentRoute = Ember.Route.extend({
model:function(params){
var post = this.modelFor('post');
return App.Comment.find(post.get('id'),params.comment_id);
}
});
There was a similar issue already.
Assuming the following routes:
App.Router.map(function (match) {
match('/').to('index');
match('/posts').to('posts', function (match) {
match('/').to('postsIndex');
match('/:post_id').to('post', function (match) {
match('/comments').to('comments', function (match) {
match('/').to('commentsIndex');
match('/:comment_id').to('showComment');
});
});
});
});
Is it possible to access both post_id
and comment_id
in ShowCommentRoute
? Otherwise should I forget about composite keys in my models?
Why CommentsRoute#model(params)
and CommentsIndexRoute
argument is always empty? How to retrieve Post
's comments when?
My fiddle.
Run this example too (there are console log showing the problem.
UPDATE after some investigation:
Only PostRoute
will have params.post_id
.
Only ShowCommentRoute
will have params.comment_id
and will not have params.post_id
.
This is unacceptable for applications where models have composite keys. In case when we are transitioning to showComment
step by step, we can obtain Comment
instance:
App.ShowCommentRoute = Ember.Route.extend({
model: function(params) {
var post_id = this.controllerFor('post').get('content.id');
return App.Comment.find(post_id, params.comment_id);
}
});
But this won't work if we directly visiting /posts/1/comments/1
. In this case this.controllerFor('post')
always undefined
.
- If you have nested routes with dynamic segments you can not access this segments in
*IndexRoute
(PostRoute
andPostInderRoute
in this example) - Shortly, it's impossible to obtain parent route model when directly visiting nested route.
Using ember-1.0.0-rc.1 it is now possible to access the parent route's model when directly visiting a url.
App.ShowCommentRoute = Ember.Route.extend({
model: function(params) {
var post = this.modelFor('post');
return App.Comment.find(post.get('id'), params.comment_id);
}
});
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