96f905f409
* Add optimistic lock to avoid race conditions when handling votes * Force-reload polls when getting `ActiveRecord::StaleObjectError`
39 rivejä
833 B
Ruby
39 rivejä
833 B
Ruby
# frozen_string_literal: true
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# == Schema Information
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#
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# Table name: poll_votes
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#
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# id :bigint(8) not null, primary key
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# account_id :bigint(8)
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# poll_id :bigint(8)
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# choice :integer default(0), not null
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# created_at :datetime not null
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# updated_at :datetime not null
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# uri :string
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#
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class PollVote < ApplicationRecord
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belongs_to :account
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belongs_to :poll, inverse_of: :votes
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validates :choice, presence: true
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validates_with VoteValidator
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after_create_commit :increment_counter_cache
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delegate :local?, to: :account
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def object_type
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:vote
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end
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private
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def increment_counter_cache
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poll.cached_tallies[choice] = (poll.cached_tallies[choice] || 0) + 1
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poll.save
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rescue ActiveRecord::StaleObjectError
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poll.reload
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retry
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end
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end
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