Exception: ActionController::ExpectedParameterMissing
| Relationships & Source Files | |
| Super Chains via Extension / Inclusion / Inheritance | |
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Class Chain:
self,
ParameterMissing,
KeyError
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Instance Chain:
self,
ParameterMissing,
DidYouMean::Correctable,
KeyError
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| Inherits: |
ActionController::ParameterMissing
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| Defined in: | actionpack/lib/action_controller/metal/strong_parameters.rb |
Overview
Raised from expect! when an expected parameter is missing or is of an incompatible type.
params = ActionController::Parameters.new(a: {})
params.expect!(:a)
# => ActionController::ExpectedParameterMissing: param is missing or the value is empty or invalid: a