35 lines
1.2 KiB
Ruby
35 lines
1.2 KiB
Ruby
module ActionView
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# = Action View Debug Helper
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#
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# Provides a set of methods for making it easier to debug Rails objects.
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module Helpers
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module DebugHelper
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include TagHelper
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# Returns a YAML representation of +object+ wrapped with <pre> and </pre>.
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# If the object cannot be converted to YAML using +to_yaml+, +inspect+ will be called instead.
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# Useful for inspecting an object at the time of rendering.
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#
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# @user = User.new({ username: 'testing', password: 'xyz', age: 42})
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# debug(@user)
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# # =>
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# <pre class='debug_dump'>--- !ruby/object:User
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# attributes:
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# updated_at:
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# username: testing
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# age: 42
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# password: xyz
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# created_at:
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# </pre>
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def debug(object)
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Marshal::dump(object)
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object = ERB::Util.html_escape(object.to_yaml)
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content_tag(:pre, object, class: "debug_dump")
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rescue # errors from Marshal or YAML
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# Object couldn't be dumped, perhaps because of singleton methods -- this is the fallback
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content_tag(:code, object.inspect, class: "debug_dump")
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end
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end
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end
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end
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