Action View Debug Helpers
Provides a set of methods for making it easier to debug Rails objects.
Methods
- D
Included Modules
Instance Public methods
debug(object) Link
Returns a YAML representation of object
wrapped with <pre> and </pre>. If the object cannot be converted to YAML using to_yaml
, inspect
will be called instead. Useful for inspecting an object at the time of rendering.
@user = User.new({ username: 'testing', password: 'xyz', age: 42})
debug(@user)
# =>
<pre class='debug_dump'>--- !ruby/object:User
attributes:
updated_at:
username: testing
age: 42
password: xyz
created_at:
</pre>
# File actionview/lib/action_view/helpers/debug_helper.rb, line 28 def debug(object) Marshal.dump(object) object = ERB::Util.html_escape(object.to_yaml) content_tag(:pre, object, class: "debug_dump") rescue # errors from Marshal or YAML # Object couldn't be dumped, perhaps because of singleton methods -- this is the fallback content_tag(:code, object.inspect, class: "debug_dump") end