discourse/app/models/stylesheet_cache.rb

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class StylesheetCache < ActiveRecord::Base
self.table_name = 'stylesheet_cache'
MAX_TO_KEEP = 50
def self.add(target,digest,content)
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return false if where(target: target, digest: digest).exists?
success = create(target: target, digest: digest, content: content)
count = StylesheetCache.count
if count > MAX_TO_KEEP
remove_lower = StylesheetCache
.where(target: target)
.limit(MAX_TO_KEEP)
.order('id desc')
.pluck(:id)
.last
exec_sql("DELETE FROM stylesheet_cache where id < :id", id: remove_lower)
end
success
rescue ActiveRecord::RecordNotUnique
false
end
end
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# == Schema Information
#
# Table name: stylesheet_cache
#
# id :integer not null, primary key
# target :string(255) not null
# digest :string(255) not null
# content :text not null
# created_at :datetime
# updated_at :datetime
#
# Indexes
#
# index_stylesheet_cache_on_target_and_digest (target,digest) UNIQUE
#