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5bd55acf83
Ensures that `UserStat#post_count` and `UserStat#topic_count` does not go below 0. When it does like it did now, we tend to have bugs in our code since we're usually coding with the assumption that the count isn't negative. In order to support the constraints, our post and topic fabricators in tests will now automatically increment the count for the respective user's `UserStat` as well. We have to do this because our fabricators bypasss `PostCreator` which holds the responsibility of updating `UserStat#post_count` and `UserStat#topic_count`.
26 lines
671 B
Ruby
26 lines
671 B
Ruby
# frozen_string_literal: true
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class AddConstraintsToUserStat < ActiveRecord::Migration[6.1]
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def up
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execute(<<~SQL)
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UPDATE user_stats
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SET post_count = 0
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WHERE post_count < 0
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SQL
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execute(<<~SQL)
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UPDATE user_stats
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SET topic_count = 0
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WHERE topic_count < 0
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SQL
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execute "ALTER TABLE user_stats ADD CONSTRAINT topic_count_positive CHECK (topic_count >= 0)"
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execute "ALTER TABLE user_stats ADD CONSTRAINT post_count_positive CHECK (post_count >= 0)"
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end
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def down
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execute "ALTER TABLE user_stats DROP CONSTRAINT topic_count_positive"
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execute "ALTER TABLE user_stats DROP CONSTRAINT post_count_positive"
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end
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end
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