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allow_blank for Time types #1380

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allow_blank for Time types #1380

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806696e
add allow_blank test for Time types
ipkes Apr 28, 2016
bdf62f7
fix for valid Time attribute with allow_blank parameter
ipkes Apr 28, 2016
bc9f393
update changelog
ipkes Apr 28, 2016
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -10,6 +10,7 @@
#### Fixes

* [#1365](https://github.com/ruby-grape/grape/pull/1365): Fix finding exception handler in error middleware - [@ktimothy](https://github.com/ktimothy).
* [#1380](https://github.com/ruby-grape/grape/pull/1380): `allow_blank: false` for `Time` attribute with valid value causes an error [@ipkes](https://github.com/ipkes).

0.16.2 (4/12/2016)
==================
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2 changes: 1 addition & 1 deletion lib/grape/validations/validators/allow_blank.rb
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Expand Up @@ -20,7 +20,7 @@ def validate_param!(attr_name, params)

return unless should_validate

return if value == false || value.present?
return if false == value || value.present?
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You're such a C programmer ;)


raise Grape::Exceptions::Validation, params: [@scope.full_name(attr_name)], message: message(:blank)
end
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5 changes: 5 additions & 0 deletions spec/grape/validations/validators/allow_blank_spec.rb
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Expand Up @@ -488,6 +488,11 @@ def app
get '/disallow_boolean_blank', val: false
expect(last_response.status).to eq(200)
end

it 'accepts value when time allow_blank' do
get '/disallow_datetime_blank', val: Time.now
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How did this fail before, just for completeness?

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Here a start of the error stack:

Failure/Error: return if value == false || value.present?
     
     NoMethodError:
       undefined method `to_datetime' for false:FalseClass
     # .../.rvm/gems/ruby-2.3.0/gems/activesupport-3.2.19/lib/active_support/core_ext/date_time/calculations.rb:141:in `<=>'
     # ./lib/grape/validations/validators/allow_blank.rb:24:in `=='
     # ./lib/grape/validations/validators/allow_blank.rb:24:in `validate_param!'

Here 'active_support/core_ext/date_time/calculations.rb:141':

  # Layers additional behavior on DateTime#<=> so that Time and
  # ActiveSupport::TimeWithZone instances can be compared with a DateTime.
  def <=>(other)
    super other.to_datetime
  end

I'm not sure why ActiveSupport is calling (if you have any idea, please share, I'll be very grateful). I think the problem is much deeper, but I'm to lazy to digging it up. So, maybe solution what offered is not a solution, it's looks like hook, but it works fine and looks pretty good =)
This works fine too:

return value.present? || false == value

expect(last_response.status).to eq(200)
end
end

context 'in an optional group' do
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