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# frozen_string_literal: true
class ProgrammingLanguage < ApplicationRecord
validates :name, presence: true
validates :color, allow_blank: false, color: true
# Returns all programming languages which match any of the given names (case
# insensitively).
scope :with_name_case_insensitive, ->(*names) do
sanitized_names = names.map(&method(:sanitize_sql_like))
where(arel_table[:name].matches_any(sanitized_names))
end
def self.most_popular(limit = 25)
sql = <<~SQL
SELECT
mcv
FROM
pg_stats
CROSS JOIN LATERAL
unnest(most_common_vals::text::int[]) mt(mcv)
WHERE
tablename = 'repository_languages' and attname='programming_language_id'
LIMIT
$1
SQL
ids = connection.exec_query(sql, 'SQL', [limit]).rows.flatten
where(id: ids).order(:name)
end
end
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