[Rails-core] Adding the ability to show causes in the DebugExceptions view

[yk . nishijima]

Hi all,

The Exception#cause 
 method 
has been added to Ruby 2.1.0 back in 2013. Since then Rails has adopted it 
to replace the #original_exception method in a few classes such as the 
ActiveSupport::Rescuable, and I believe we could take a step further to 
help debug an app in development. One low-hanging fruit that I see is to 
add the ability to show causes in the DebugExceptions view. I have made a 
proof-of-concept implementation to see if it could be really useful. Here 
is a screenshot of what it looks like:



The code could be found 
here: 
https://github.com/rails/rails/compare/master...yuki24:show-cause-on-debug-view

Of course, there is going to be more things to take care of, such as 
implementing more frontend features and updating how a TemplateError (which 
already uses #cause) could be shown, but I wanted to get feedback 
(especially on the visual aspect of the PoC) before I invest more time in 
it.

Let me know what you all think.

Thanks,
Yuki

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Re: [Rails-core] Adding the ability to show causes in the DebugExceptions view

[Rafael Mendonça França]

Looks good to me. Please open a pr
On Thu, Mar 8, 2018 at 10:20 PM  wrote:

> Hi all,
>
> The Exception#cause
> 
> method has been added to Ruby 2.1.0 back in 2013. Since then Rails has
> adopted it to replace the #original_exception method in a few classes
> such as the ActiveSupport::Rescuable, and I believe we could take a step
> further to help debug an app in development. One low-hanging fruit that I
> see is to add the ability to show causes in the DebugExceptions view. I
> have made a proof-of-concept implementation to see if it could be really
> useful. Here is a screenshot of what it looks like:
>
>
> 
>
> The code could be found here:
> https://github.com/rails/rails/compare/master...yuki24:show-cause-on-debug-view
>
> Of course, there is going to be more things to take care of, such as
> implementing more frontend features and updating how a TemplateError (which
> already uses #cause) could be shown, but I wanted to get feedback
> (especially on the visual aspect of the PoC) before I invest more time in
> it.
>
> Let me know what you all think.
>
> Thanks,
> Yuki
>
> --
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> "Ruby on Rails: Core" group.
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>

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