54 lines
1.7 KiB
Ruby
54 lines
1.7 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
module LegacyBulkInsert
|
|
extend ActiveSupport::Concern
|
|
|
|
class_methods do
|
|
# Bulk inserts a number of rows into a table, optionally returning their
|
|
# IDs.
|
|
#
|
|
# This method is deprecated, and you should use the BulkInsertSafe module
|
|
# instead.
|
|
#
|
|
# table - The name of the table to insert the rows into.
|
|
# rows - An Array of Hash instances, each mapping the columns to their
|
|
# values.
|
|
# return_ids - When set to true the return value will be an Array of IDs of
|
|
# the inserted rows
|
|
# disable_quote - A key or an Array of keys to exclude from quoting (You
|
|
# become responsible for protection from SQL injection for
|
|
# these keys!)
|
|
# on_conflict - Defines an upsert. Values can be: :disabled (default) or
|
|
# :do_nothing
|
|
def legacy_bulk_insert(table, rows, return_ids: false, disable_quote: [], on_conflict: nil)
|
|
return if rows.empty?
|
|
|
|
keys = rows.first.keys
|
|
columns = keys.map { |key| connection.quote_column_name(key) }
|
|
|
|
disable_quote = Array(disable_quote).to_set
|
|
tuples = rows.map do |row|
|
|
keys.map do |k|
|
|
disable_quote.include?(k) ? row[k] : connection.quote(row[k])
|
|
end
|
|
end
|
|
|
|
sql = <<-EOF
|
|
INSERT INTO #{table} (#{columns.join(', ')})
|
|
VALUES #{tuples.map { |tuple| "(#{tuple.join(', ')})" }.join(', ')}
|
|
EOF
|
|
|
|
sql = "#{sql} ON CONFLICT DO NOTHING" if on_conflict == :do_nothing
|
|
|
|
sql = "#{sql} RETURNING id" if return_ids
|
|
|
|
result = connection.execute(sql)
|
|
|
|
if return_ids
|
|
result.values.map { |tuple| tuple[0].to_i }
|
|
else
|
|
[]
|
|
end
|
|
end
|
|
end
|
|
end
|