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https://issues.apache.org/jira/browse/SOLR-12196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16438382#comment-16438382
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Shawn Heisey commented on SOLR-12196:
-------------------------------------

bq. that we do a component-based design which makes it possible for Solr 
plugins / contribs to provide Admin UI menus and screens

I really like that idea.  Allowing modules to handle their own UI will make 
maintaining the core UI easier and give module developers more capability.

If I had the knowledge, I'd be interested in helping with a rewrite.  I just 
don't know enough about javascript or css to tackle a job like that.

> Prepare Admin UI for migrating to Angular.io
> --------------------------------------------
>
>                 Key: SOLR-12196
>                 URL: https://issues.apache.org/jira/browse/SOLR-12196
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: Admin UI
>            Reporter: Jan H√łydahl
>            Priority: Major
>              Labels: Angular, AngularJS, angular-migration
>             Fix For: master (8.0)
>
>
> AngularJS is soon end of life, it [enters LTS in july 
> 2018|https://docs.angularjs.org/misc/version-support-status], whereupon it 
> will only receive fixes to serious bugs. Solr uses AngularJS 1.3 (the latest 
> AngularJS will be 1.7).
> This issue is *not* for upgrading to Angular5/6, but to start preparing the 
> existing UI for easier migration later on. See 
> [https://angular.io/guide/upgrade].
> This JIRA will likely get multiple sub tasks such as
>  * Change to [Folders-by-Feature 
> Structure|https://angular.io/guide/upgrade#follow-the-angularjs-style-guide], 
> i.e. mix html, css, js in a folder based on feature
>  * Use a [Module 
> Loader|https://angular.io/guide/upgrade#using-a-module-loader] like 
> [Webpack|https://webpack.js.org/]
>  * Use [Component 
> Directives|https://angular.io/guide/upgrade#using-component-directives] 
> (requires first move from AngularJS 1.3 to 1.5)
> The rationale for this lira is recognising how central the Admin UI is to 
> Solr, not letting it rot on top of a dying framework. Better to start moving 
> step by step and [perhaps write all new views in Angular 
> 5|https://angular.io/guide/upgrade#upgrading-with-ngupgrade], than to fall 
> further and further behind.
> This effort of course assumes that Angular.io is the path we want to go, and 
> not React, VueJS or some other new kid on the block :)



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