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Deprecation Guide for Using / for namespace in the {{render}} helper

When using the render helper, its possible to specify a context within a nested directory structure. Prior to 1.13, it was acceptable to separate nested directories using slashes /, but this is now deprecated, as Ember has settled on using dot notation for namespacing.

For example, a developer might have a controller at app/controllers/blog/posts.js and is using the render helper to render that controller context within another template.

Instead of using {{render 'blog/posts'}}, use {{render 'blog.posts'}}. That will render the template associated with app/controllers/blog/posts.js in your directory structure.