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fdeef19833
The new association error belongs to Active Record, not Active Model. See #18700 for reference.
70 lines
2.3 KiB
Markdown
70 lines
2.3 KiB
Markdown
* Assigning an unknown attribute key to an `ActiveModel` instance during initialization
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will now raise `ActiveModel::AttributeAssignment::UnknownAttributeError` instead of
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`NoMethodError`
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Example:
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User.new(foo: 'some value')
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# => ActiveModel::AttributeAssignment::UnknownAttributeError: unknown attribute 'foo' for User.
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*Eugene Gilburg*
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* Extracted `ActiveRecord::AttributeAssignment` to `ActiveModel::AttributeAssignment`
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allowing to use it for any object as an includable module.
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Example:
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class Cat
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include ActiveModel::AttributeAssignment
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attr_accessor :name, :status
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end
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cat = Cat.new
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cat.assign_attributes(name: "Gorby", status: "yawning")
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cat.name # => 'Gorby'
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cat.status => 'yawning'
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cat.assign_attributes(status: "sleeping")
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cat.name # => 'Gorby'
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cat.status => 'sleeping'
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*Bogdan Gusiev*
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* Add `ActiveModel::Errors#details`
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To be able to return type of used validator, one can now call `details`
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on errors instance.
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Example:
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class User < ActiveRecord::Base
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validates :name, presence: true
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end
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user = User.new; user.valid?; user.errors.details
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=> {name: [{error: :blank}]}
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*Wojciech Wnętrzak*
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* Change validates_acceptance_of to accept true by default.
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The default for validates_acceptance_of is now "1" and true.
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In the past, only "1" was the default and you were required to add
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accept: true.
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* Remove deprecated `ActiveModel::Dirty#reset_#{attribute}` and
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`ActiveModel::Dirty#reset_changes`.
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*Rafael Mendonça França*
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* Change the way in which callback chains can be halted.
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The preferred method to halt a callback chain from now on is to explicitly
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`throw(:abort)`.
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In the past, returning `false` in an ActiveModel or ActiveModel::Validations
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`before_` callback had the side effect of halting the callback chain.
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This is not recommended anymore and, depending on the value of the
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`config.active_support.halt_callback_chains_on_return_false` option, will
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either not work at all or display a deprecation warning.
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Please check [4-2-stable](https://github.com/rails/rails/blob/4-2-stable/activemodel/CHANGELOG.md) for previous changes.
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