# Questions **URL:** https://discuss.emberjs.com/c/questions/17.md [Latest](https://discuss.emberjs.com/latest.md) · [Categories](https://discuss.emberjs.com/categories.md) --- ## [About the Questions category](https://discuss.emberjs.com/t/about-the-questions-category/14497)
**Author:** [@rwjblue](https://discuss.emberjs.com/u/rwjblue)\ **Replies:** 0
(Replace this first paragraph with a brief description of your new category. This guidance will appear in the category selection area, so try to keep it below 200 characters. Until you edit this description or create top… --- ## [Tomster not showing up in super-rentals tutorial](https://discuss.emberjs.com/t/tomster-not-showing-up-in-super-rentals-tutorial/22042)
**Author:** [@xsember](https://discuss.emberjs.com/u/xsember)\ **Replies:** 2\ **Last updated:** [August 17, 2026, 8:39pm UTC](https://discuss.emberjs.com/t/tomster-not-showing-up-in-super-rentals-tutorial/22042 "2026-08-17T20:39:42Z")
There’s another issue with pretty much the same title from 2023, and yes, the fix presented there eventually got added as a fix and it is now present in the super-rentals app.css file. TL;DR: Replace the url for the tom… --- ## [\[Solved\] Upgrade 3.28 to 4.x: "Ember is not defined"](https://discuss.emberjs.com/t/solved-upgrade-3-28-to-4-x-ember-is-not-defined/19519)
**Author:** [@gandalfix](https://discuss.emberjs.com/u/gandalfix)\ **Replies:** 4\ **Last updated:** [February 6, 2026, 6:30am UTC](https://discuss.emberjs.com/t/solved-upgrade-3-28-to-4-x-ember-is-not-defined/19519 "2026-02-06T06:30:21Z")
Hey there, i am upgrading an application from 3.28 to 4.0 (but the issue is also when going directly to 4.3): When starting the application itself or the qunit tests I get the errors: Uncaught ReferenceError: Ember is … --- ## [Ember-cp-validations not compatible with Ember Data 5.4+](https://discuss.emberjs.com/t/ember-cp-validations-not-compatible-with-ember-data-5-4/21860)
**Author:** [@klavier\_spieler](https://discuss.emberjs.com/u/klavier_spieler)\ **Replies:** 1\ **Last updated:** [January 26, 2026, 3:40pm UTC](https://discuss.emberjs.com/t/ember-cp-validations-not-compatible-with-ember-data-5-4/21860 "2026-01-26T15:40:08Z")
Hi everyone! :waving\_hand: While updating my application to Ember CLI 6+, I encountered a compatibility issue between the ember-cp-validations library (latest version 7.0.0) and Ember Data starting from version 5.4. Is … --- ## [My embroider questions, answers and more questions notes page](https://discuss.emberjs.com/t/my-embroider-questions-answers-and-more-questions-notes-page/21822)
**Author:** [@efx](https://discuss.emberjs.com/u/efx)\ **Replies:** 2\ **Last updated:** [January 2, 2026, 8:55pm UTC](https://discuss.emberjs.com/t/my-embroider-questions-answers-and-more-questions-notes-page/21822 "2026-01-02T20:55:03Z")
I am documenting my experience migrating an ember project to use the grand embroider future. I hope these notes help those with similar configurations: note on the external, spammy looking link I don’t want to login … --- ## [Problems following quickstart tutorial](https://discuss.emberjs.com/t/problems-following-quickstart-tutorial/21789)
**Author:** [@xsember](https://discuss.emberjs.com/u/xsember)\ **Replies:** 5\ **Last updated:** [October 1, 2025, 11:25am UTC](https://discuss.emberjs.com/t/problems-following-quickstart-tutorial/21789 "2025-10-01T11:25:25Z")
I’m sorry to annoy y’all on a Saturday with another tutorial issue, but the issues I’ve found in this forum haven’t been helpful for my situation. Trying to follow the quickstart tutorial hasn’t been a smooth experience … --- ## [Template inheritance - ember 5.12](https://discuss.emberjs.com/t/template-inheritance-ember-5-12/21641)
**Author:** [@Saurabh\_Batra](https://discuss.emberjs.com/u/Saurabh_Batra)\ **Replies:** 2\ **Last updated:** [September 22, 2025, 3:45pm UTC](https://discuss.emberjs.com/t/template-inheritance-ember-5-12/21641 "2025-09-22T15:45:10Z")
I recently updated my app from ember 3.16 to ember 5.12 and have started seeing a weird issue. My component has started using template from the parent component is it extending. I am using co-located template in my app … --- ## [How to incorporate computed property macros w/ glimmer components](https://discuss.emberjs.com/t/how-to-incorporate-computed-property-macros-w-glimmer-components/18028)
**Author:** [@g\_r](https://discuss.emberjs.com/u/g_r)\ **Replies:** 5\ **Last updated:** [September 16, 2025, 2:16am UTC](https://discuss.emberjs.com/t/how-to-incorporate-computed-property-macros-w-glimmer-components/18028 "2025-09-16T02:16:28Z")
Hi I am looking for an example of how computed property macro’s fit into the glimmer component context having trouble finding explicit documentation on how macro’s are used in this case Any help would be appreciated. … --- ## [Set focus on component after user interaction](https://discuss.emberjs.com/t/set-focus-on-component-after-user-interaction/21691)
**Author:** [@b-rlw](https://discuss.emberjs.com/u/b-rlw)\ **Replies:** 4\ **Last updated:** [August 4, 2025, 5:25pm UTC](https://discuss.emberjs.com/t/set-focus-on-component-after-user-interaction/21691 "2025-08-04T17:25:30Z")
I’m using Polaris. ember-cli: 6.3.1 node: 20.19.4 os: win32 x64 And I want to set the focus to a component after the user has created a tag. This is a partial code block: if you need more, please ask. My issue is that … --- ## [Difference between router.transitionTo and LinkTo in terms of handling the queryParams while generating the url](https://discuss.emberjs.com/t/difference-between-router-transitionto-and-linkto-in-terms-of-handling-the-queryparams-while-generating-the-url/21686)
**Author:** [@Hari](https://discuss.emberjs.com/u/Hari)\ **Replies:** 0\ **Last updated:** [July 24, 2025, 8:56am UTC](https://discuss.emberjs.com/t/difference-between-router-transitionto-and-linkto-in-terms-of-handling-the-queryparams-while-generating-the-url/21686 "2025-07-24T08:56:38Z")
Hello there, I am new to ember , so kindly tolerate any silly questions or things I may ask, I have a scenario where I will be using the router.transitionTo function in my controller(say from A route) to transition to … --- ## [Ember with vite?](https://discuss.emberjs.com/t/ember-with-vite/20553)
**Author:** [@shull](https://discuss.emberjs.com/u/shull)\ **Replies:** 4\ **Last updated:** [June 23, 2025, 10:35pm UTC](https://discuss.emberjs.com/t/ember-with-vite/20553 "2025-06-23T22:35:33Z")
Hi Emberistas :wave: It’s been a long time since I’ve used Ember (:cry:) or been involved in the Ember community. It’s clear a lot of cool stuff has been going on and there’s a lot that has changed. I’m working on a Ra… --- ## [WebpackBundler Error](https://discuss.emberjs.com/t/webpackbundler-error/21629)
**Author:** [@Szabo\_Bogdan](https://discuss.emberjs.com/u/Szabo_Bogdan)\ **Replies:** 3\ **Last updated:** [May 18, 2025, 1:23pm UTC](https://discuss.emberjs.com/t/webpackbundler-error/21629 "2025-05-18T13:23:32Z")
Hey, I try to include an addon v2 in an Ember app, but just by including it, I get build errors for every import from that addon, like this one: WARNING in models/article-link.js 4:361-365 export 'attr' (imported as '… --- ## [TypeError: template is not a function](https://discuss.emberjs.com/t/typeerror-template-is-not-a-function/21599)
**Author:** [@Szabo\_Bogdan](https://discuss.emberjs.com/u/Szabo_Bogdan)\ **Replies:** 3\ **Last updated:** [May 9, 2025, 10:33am UTC](https://discuss.emberjs.com/t/typeerror-template-is-not-a-function/21599 "2025-05-09T10:33:02Z")
Hey everyone, I am trying to update my Ember addon and get this error, but I have no clue how to fix it. Does anyone know where I should start debugging it? TypeError: template is not a function Ember 32 js chu… --- ## [Providing routes with controllers and templates with addon v2](https://discuss.emberjs.com/t/providing-routes-with-controllers-and-templates-with-addon-v2/21591)
**Author:** [@Szabo\_Bogdan](https://discuss.emberjs.com/u/Szabo_Bogdan)\ **Replies:** 3\ **Last updated:** [May 5, 2025, 7:31am UTC](https://discuss.emberjs.com/t/providing-routes-with-controllers-and-templates-with-addon-v2/21591 "2025-05-05T07:31:44Z")
Hey everyone, I’m trying to write a new addon v2 that provides routes with controllers and templates. I made this update in the rollup.config.mjs file: addon.appReexports(\[ 'components/\*\*/\*.js', 'helpers/\*… --- ## [Embroider - Rendering dynamic components using {{component}}](https://discuss.emberjs.com/t/embroider-rendering-dynamic-components-using-component/21568)
**Author:** [@ember\_328](https://discuss.emberjs.com/u/ember_328)\ **Replies:** 8\ **Last updated:** [April 17, 2025, 2:34pm UTC](https://discuss.emberjs.com/t/embroider-rendering-dynamic-components-using-component/21568 "2025-04-17T14:34:09Z")
Hi, I am trying to use Embroider to perform lazy loading of my ember app(v3.28). Currently we have a lot of instances where we have used the {{component}} helper to render dynamic components. I have few queries related t… --- ## [Monorepo HowTo?](https://discuss.emberjs.com/t/monorepo-howto/21495)
**Author:** [@Dirk\_Lachowski](https://discuss.emberjs.com/u/Dirk_Lachowski)\ **Replies:** 6\ **Last updated:** [March 12, 2025, 2:30am UTC](https://discuss.emberjs.com/t/monorepo-howto/21495 "2025-03-12T02:30:05Z")
I’m trying to learn how to build Ember apps in a monorepo setting using pnpm. This is obviously possible and i found some examples ( eg.: GitHub - NullVoxPopuli/limber: Monorepo for the omni-REPL: Limber ). What I have: … --- ## [In nested routing when i link from child route to parent route the parent route model is not loading](https://discuss.emberjs.com/t/in-nested-routing-when-i-link-from-child-route-to-parent-route-the-parent-route-model-is-not-loading/19860)
**Author:** [@Sriakran](https://discuss.emberjs.com/u/Sriakran)\ **Replies:** 4\ **Last updated:** [February 17, 2025, 4:23pm UTC](https://discuss.emberjs.com/t/in-nested-routing-when-i-link-from-child-route-to-parent-route-the-parent-route-model-is-not-loading/19860 "2025-02-17T16:23:13Z")
Hi, I’m newbie to ember when I call the parent route using \ The model of that route is not loading but when I call the neighbor route of that child route the model is loading, What should i do to load the parent … --- ## [Ember js - Embroider, Ember Engines](https://discuss.emberjs.com/t/ember-js-embroider-ember-engines/21464)
**Author:** [@ember\_newbie](https://discuss.emberjs.com/u/ember_newbie)\ **Replies:** 8\ **Last updated:** [February 12, 2025, 11:56pm UTC](https://discuss.emberjs.com/t/ember-js-embroider-ember-engines/21464 "2025-02-12T23:56:38Z")
Hello, I am currently working on a legacy Ember.js application (Ember version 3.4.8). We are trying to improve the build and load time of our Ember application. I came across both Embroider and Ember Engines, and by the… --- ## [\[Answered\] How do I enable Explicit Resource Management in a new Ember app?](https://discuss.emberjs.com/t/answered-how-do-i-enable-explicit-resource-management-in-a-new-ember-app/21448)
**Author:** [@sukima](https://discuss.emberjs.com/u/sukima)\ **Replies:** 0\ **Last updated:** [January 28, 2025, 4:49pm UTC](https://discuss.emberjs.com/t/answered-how-do-i-enable-explicit-resource-management-in-a-new-ember-app/21448 "2025-01-28T16:49:33Z")
For anyone curious about the new Explicit Resource Management features coming soon and supported by latest versions of TypeScript here are some steps to enable it in your Ember apps today! Demo Steps install dependenc… --- ## [Is there any way to render a ember octane component from a string?](https://discuss.emberjs.com/t/is-there-any-way-to-render-a-ember-octane-component-from-a-string/21406)
**Author:** [@Abdul\_Zaffar](https://discuss.emberjs.com/u/Abdul_Zaffar)\ **Replies:** 3\ **Last updated:** [December 22, 2024, 9:58pm UTC](https://discuss.emberjs.com/t/is-there-any-way-to-render-a-ember-octane-component-from-a-string/21406 "2024-12-22T21:58:03Z")
Consider that I am getting a component from a api response or a component passed via args. Example let myButton = "\Clickme\"; (or) \ **Author:** [@mario.gomez](https://discuss.emberjs.com/u/mario.gomez)\ **Replies:** 1\ **Last updated:** [December 17, 2024, 9:48pm UTC](https://discuss.emberjs.com/t/help-developing-a-ui-components-styles-library-with-ember-v2-addons/21402 "2024-12-17T21:48:13Z") Hi everyone, I’m looking for some help to develop a v2 addon that will serve as a UI components library (buttons, forms, modals, cards, badges, etc.) to be used across multiple apps I’m developing. Where can I find do… --- ## [Assertion Failed: \[BUG\] seen set should be available](https://discuss.emberjs.com/t/assertion-failed-bug-seen-set-should-be-available/21398)
**Author:** [@mattheww](https://discuss.emberjs.com/u/mattheww)\ **Replies:** 3\ **Last updated:** [December 10, 2024, 4:45am UTC](https://discuss.emberjs.com/t/assertion-failed-bug-seen-set-should-be-available/21398 "2024-12-10T04:45:19Z")
I’m encountering the error in the title after attempting to update an Ember app from 3.26 to 3.28 (as well as updating Node 14 → 16). All the advice I can find says to update ember-basic-dropdown or its dependent, ember-… --- ## [Ember Simple Auth session store](https://discuss.emberjs.com/t/ember-simple-auth-session-store/21389)
**Author:** [@spphashicorp](https://discuss.emberjs.com/u/spphashicorp)\ **Replies:** 5\ **Last updated:** [December 6, 2024, 7:21pm UTC](https://discuss.emberjs.com/t/ember-simple-auth-session-store/21389 "2024-12-06T19:21:17Z")
Is there a way to conditionally set the session store for ember-simple-auth? for example via a launch darkly flag? Basically, depending on the condition, it should be either a BaseStore or an AdaptiveStore. --- ## [How do I make a standalone Glimmer html page?](https://discuss.emberjs.com/t/how-do-i-make-a-standalone-glimmer-html-page/21384)
**Author:** [@sam](https://discuss.emberjs.com/u/sam)\ **Replies:** 6\ **Last updated:** [December 2, 2024, 11:06pm UTC](https://discuss.emberjs.com/t/how-do-i-make-a-standalone-glimmer-html-page/21384 "2024-12-02T23:06:36Z")
I am playing at the moment with AI artifacts and wanted to see if there is a simple way to make a standalone page that renders a gjs component. For example in the react world something like this will work: \ **Author:** [@sam](https://discuss.emberjs.com/u/sam)\ **Replies:** 2\ **Last updated:** [December 2, 2024, 10:26pm UTC](https://discuss.emberjs.com/t/what-is-the-state-of-art-debugging-technique-for-busted-templates/21385 "2024-12-02T22:26:11Z") If I have a broken gjs component eg: export default class MyComponent extends Component { \ {{this.does.not.exist}} \ } What is the state-of-the-art technique for: Discovering which com… --- ## [Looking for a reliable AI copilot for Ember.js](https://discuss.emberjs.com/t/looking-for-a-reliable-ai-copilot-for-ember-js/21370)
**Author:** [@mario.gomez](https://discuss.emberjs.com/u/mario.gomez)\ **Replies:** 5\ **Last updated:** [November 12, 2024, 1:32pm UTC](https://discuss.emberjs.com/t/looking-for-a-reliable-ai-copilot-for-ember-js/21370 "2024-11-12T13:32:46Z")
I’ve been using GitHub Copilot, Claude Sonnet, and ChatGPT for a while now, and while they’ve been helpful in some ways, I’ve encountered a recurring issue. Often, these AI assistants generate code that’s either based on… --- ## [How cool is emberjs than other frameworks?](https://discuss.emberjs.com/t/how-cool-is-emberjs-than-other-frameworks/19073)
**Author:** [@hari\_s18](https://discuss.emberjs.com/u/hari_s18)\ **Replies:** 2\ **Last updated:** [August 20, 2021, 3:51am UTC](https://discuss.emberjs.com/t/how-cool-is-emberjs-than-other-frameworks/19073 "2021-08-20T03:51:56Z")
I am working on emberjs framework since a month ago. There is alot of frameworks available but my management uses emberjs framework. So, I wanted to know how powerful is this. --- ## [Recreating hasMany relationship in unit test](https://discuss.emberjs.com/t/recreating-hasmany-relationship-in-unit-test/21358)
**Author:** [@ToMaarton](https://discuss.emberjs.com/u/ToMaarton)\ **Replies:** 3\ **Last updated:** [October 18, 2024, 10:09am UTC](https://discuss.emberjs.com/t/recreating-hasmany-relationship-in-unit-test/21358 "2024-10-18T10:09:07Z")
I have a question regarding unit tests for a model. The model is a photo album with photos, and the photos can have tags. The photo model has an attribute: amountOfTags. the amountOfTaggedPhotos getter is supposed to r… --- ## [Brace expension in computed with unknownProperty](https://discuss.emberjs.com/t/brace-expension-in-computed-with-unknownproperty/20612)
**Author:** [@grunk](https://discuss.emberjs.com/u/grunk)\ **Replies:** 3\ **Last updated:** [October 16, 2024, 3:36pm UTC](https://discuss.emberjs.com/t/brace-expension-in-computed-with-unknownproperty/20612 "2024-10-16T15:36:52Z")
Hi, I recently refactored a service from a PromiseProxyMixin to an Octane Service. This new service use unknownProperty to replicate the previous behaviour : this.myService.someRandomProperty class myService extends Se… --- ## [Build file error while using Moment in Ember 5.10](https://discuss.emberjs.com/t/build-file-error-while-using-moment-in-ember-5-10/20600)
**Author:** [@anishme](https://discuss.emberjs.com/u/anishme)\ **Replies:** 4\ **Last updated:** [August 30, 2024, 5:04am UTC](https://discuss.emberjs.com/t/build-file-error-while-using-moment-in-ember-5-10/20600 "2024-08-30T05:04:25Z")
chunk.node\_modules\_moment\_locale\_sync…js file is created in the build process, when I install moment, but when moment is removed then this file will also be removed. This file has naming convention that seems to depen… [Next page](https://discuss.emberjs.com/c/questions/17.md?page=1)