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26 lines
802 B
Ruby
26 lines
802 B
Ruby
# frozen_string_literal: true
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module ViewableModel
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extend ActiveSupport::Concern
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included do
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has_many :view_states, as: :viewable, dependent: :destroy
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end
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# This module requres that the class which includes it implements these methods:
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# => default_view_state, returning hash with default state representation
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# => validate_view_state(view_state), custom validator for the state hash
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def default_view_state
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raise NotImplementedError, 'default_view_state should be implemented!'
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end
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def validate_view_state(_view_state)
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raise NotImplementedError, 'validate_view_state(view_state) should be implemented!'
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end
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def current_view_state(user)
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state = view_states.find_by(user: user)
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state || view_states.create!(user: user, state: default_view_state)
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end
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end
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