79 lines
1.9 KiB
Ruby
79 lines
1.9 KiB
Ruby
class PostVote < ApplicationRecord
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class Error < StandardError; end
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belongs_to :post
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belongs_to :user
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attr_accessor :vote
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after_initialize :initialize_attributes, if: :new_record?
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validates_presence_of :score
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validates_inclusion_of :score, :in => [SuperVoter::MAGNITUDE, 1, -1, -SuperVoter::MAGNITUDE]
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after_create :update_post_on_create
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after_destroy :update_post_on_destroy
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scope :positive, -> { where("post_votes.score > 0") }
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scope :negative, -> { where("post_votes.score < 0") }
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def self.positive_user_ids
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positive.group(:user_id).having("count(*) > 100").pluck(:user_id)
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end
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def self.negative_post_ids(user_id)
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negative.where(user_id: user_id).pluck(:post_id)
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end
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def self.positive_post_ids(user_id)
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positive.where(user_id: user_id).pluck(:post_id)
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end
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def self.visible(user = CurrentUser.user)
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return all if user.is_admin?
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where(user: user)
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end
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def self.search(params)
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q = super
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q = q.visible
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q = q.search_attributes(params, :post, :user, :score)
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q.apply_default_order(params)
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end
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def initialize_attributes
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self.user_id ||= CurrentUser.user.id
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if vote == "up"
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self.score = magnitude
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elsif vote == "down"
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self.score = -magnitude
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end
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end
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def update_post_on_create
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if score > 0
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Post.where(:id => post_id).update_all("score = score + #{score}, up_score = up_score + #{score}")
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else
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Post.where(:id => post_id).update_all("score = score + #{score}, down_score = down_score + #{score}")
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end
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end
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def update_post_on_destroy
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if score > 0
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Post.where(:id => post_id).update_all("score = score - #{score}, up_score = up_score - #{score}")
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else
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Post.where(:id => post_id).update_all("score = score - #{score}, down_score = down_score - #{score}")
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end
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end
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def magnitude
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if user.is_super_voter?
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SuperVoter::MAGNITUDE
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else
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1
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end
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end
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def self.available_includes
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[:user, :post]
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end
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end
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