Module ActionView::Helpers::DebugHelper
In: vendor/rails/actionpack/lib/action_view/helpers/debug_helper.rb

Provides a set of methods for making it easier to locate problems.

Methods

debug  

Public Instance methods

debug(object)

Returns a <pre>-tag set with the object dumped by YAML. Very readable way to inspect an object. 

 my_hash = {'first' => 1, 'second' => 'two', 'third' => [1,2,3]}
 debug(my_hash)
 => <pre class='debug_dump'>---
 first: 1
 second: two
 third:
 - 1
 - 2
 - 3
 </pre>

[Source]

    # File vendor/rails/actionpack/lib/action_view/helpers/debug_helper.rb, line 16
16:       def debug(object)
17:         begin
18:           Marshal::dump(object)
19:           "<pre class='debug_dump'>#{h(object.to_yaml).gsub("  ", "&nbsp; ")}</pre>"
20:         rescue Exception => e  # errors from Marshal or YAML
21:           # Object couldn't be dumped, perhaps because of singleton methods -- this is the fallback
22:           "<code class='debug_dump'>#{h(object.inspect)}</code>"
23:         end
24:       end

[Validate]