Commits on Oct 29, 2022

1. Add link to external editor to rescue view …

   I don't know the official way to request a feature in RoR.  I hope
   this pull request is reasonably complete and acceptable.
   
   This is a somewhat trivial diff.  Currently, when an exception is
   thrown, a page is rendered and part of the page has the paths and line
   numbers from the exception stack.  The lines are clickable and when
   clicked, the upper section changes to show more context of the line in
   the original source code.
   
   The proposed change is to add an additional link whose text is the
   Unicode link symbol after the existing link.  The more common glyph
   was rejected by Unicode.
   
   The href for the link symbol comes from Ruby code that first checks,
   at render time, to see if ActionDispatch::DebugView#ext_editor is
   defined.  If it is, it is called passing the "frame".  Otherwise,
   ActionDispatch::DebugView#int_editor is called.
   
   int_editor creates a URL using the `file:` scheme.  While most
   browsers won't follow the link, it will show to the developer what is
   possible.  My example of ext_editor creates a URL using the `emacs:`
   scheme.
   
   I've added a tool tip to try and tell the developers how they can
   configure the URL to invoke their favorite editor.
   
   I thought the approach of checking to see if a method is defined
   and calling it would be preferred to having the user redefine the
   definition of an existing method.
   
   Another piece of work to do would be to add something like the sample
   I have to the templates so that config/initializers/debug_view.rb
   would be created when the Rails app is created.
   
   Having both links, the currently existing link that shows the code
   snippets and the new link that opens the file in the external editor,
   gives the users the best of both worlds.  They can view in the browser
   what happened and then click to get them placed in their favorite
   editor at the line number for the issue.
   
   The key here is "their favorite editor" can be customized to their
   liking via the ext_editor method.

   

   pedz committed Oct 29, 2022
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