a926b162be
In rails 5, belongs_to associations automatically validate that the associated item is present, meaning that we don't need to validate these things manually any more.
64 lines
1.7 KiB
Ruby
64 lines
1.7 KiB
Ruby
class PostVote < ApplicationRecord
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class Error < Exception ; 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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def self.prune!
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where("created_at < ?", 90.days.ago).delete_all
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end
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def self.positive_user_ids
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select_values_sql("select user_id from post_votes where score > 0 group by user_id having count(*) > 100")
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end
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def self.negative_post_ids(user_id)
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select_values_sql("select post_id from post_votes where score < 0 and user_id = ?", user_id)
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end
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def self.positive_post_ids(user_id)
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select_values_sql("select post_id from post_votes where score > 0 and user_id = ?", user_id)
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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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end
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