# File lib/active_record/schema_migration.rb, line 8 def primary_key nil end
class ActiveRecord::SchemaMigration
Public Class Methods
create_table(limit=nil)
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# File lib/active_record/schema_migration.rb, line 24 def create_table(limit=nil) unless table_exists? version_options = {null: false} version_options[:limit] = limit if limit connection.create_table(table_name, id: false) do |t| t.column :version, :string, version_options end connection.add_index table_name, :version, unique: true, name: index_name end end
drop_table()
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# File lib/active_record/schema_migration.rb, line 36 def drop_table if table_exists? connection.remove_index table_name, name: index_name connection.drop_table(table_name) end end
index_name()
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# File lib/active_record/schema_migration.rb, line 16 def index_name "#{table_name_prefix}unique_#{ActiveRecord::Base.schema_migrations_table_name}#{table_name_suffix}" end
normalize_migration_number(number)
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# File lib/active_record/schema_migration.rb, line 43 def normalize_migration_number(number) "%.3d" % number.to_i end
normalized_versions()
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# File lib/active_record/schema_migration.rb, line 47 def normalized_versions pluck(:version).map { |v| normalize_migration_number v } end
primary_key()
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table_exists?()
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# File lib/active_record/schema_migration.rb, line 20 def table_exists? connection.table_exists?(table_name) end
table_name()
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# File lib/active_record/schema_migration.rb, line 12 def table_name "#{table_name_prefix}#{ActiveRecord::Base.schema_migrations_table_name}#{table_name_suffix}" end
Public Instance Methods
version()
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Calls superclass method
# File lib/active_record/schema_migration.rb, line 52 def version super.to_i end