9efb374ae5
Allow users to upvote a comment, then downvote it, without raising an error or having to manually remove the upvote first. The upvote is automatically removed and replaced by the downvote. Changes to the /comment_votes API: * `POST /comment_votes` and `DELETE /comment_votes` now return a comment vote instead of a comment. * The `score` param in `POST /comment_votes` is now 1 or -1, not `up` or `down.`
58 lines
1.3 KiB
Ruby
58 lines
1.3 KiB
Ruby
class CommentVote < ApplicationRecord
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belongs_to :comment
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belongs_to :user
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validates_presence_of :score
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validates_uniqueness_of :user_id, :scope => :comment_id, :message => "have already voted for this comment"
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validate :validate_comment_can_be_down_voted
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validates_inclusion_of :score, :in => [-1, 1], :message => "must be 1 or -1"
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after_create :update_score_after_create
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after_destroy :update_score_after_destroy
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def self.visible(user)
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if user.is_moderator?
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all
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elsif user.is_anonymous?
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none
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else
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where(user: user)
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end
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end
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def self.search(params)
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q = search_attributes(params, :id, :created_at, :updated_at, :score, :comment, :user)
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q.apply_default_order(params)
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end
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def validate_comment_can_be_down_voted
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if is_positive? && comment.creator == CurrentUser.user
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errors.add(:base, "You cannot upvote your own comments")
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end
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end
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def is_positive?
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score == 1
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end
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def is_negative?
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score == -1
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end
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def update_score_after_create
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comment.with_lock do
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comment.update_columns(score: comment.score + score)
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end
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end
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def update_score_after_destroy
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comment.with_lock do
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comment.update_columns(score: comment.score - score)
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end
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end
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def self.available_includes
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[:comment, :user]
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end
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end
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