activerecord-8.1.2 Documentation

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ActiveRecord::Migration
- Object

Classes and Modules

ActiveRecord
- ActiveRecordError
- AdapterError
- AdapterNotFound
- AdapterNotSpecified
- AdapterTimeout
- Aggregations
  - ClassMethods
- AmbiguousSourceReflectionForThroughAssociation
- Assertions
  - QueryAssertions
    SQLCounter
- AssociationNotFoundError
- AssociationRelation
- AssociationTypeMismatch
- Associations
  - AliasTracker
  - Association
  - AssociationScope
    ReflectionProxy
  - BelongsToAssociation
  - BelongsToPolymorphicAssociation
  - Builder
    Association
    BelongsTo
    CollectionAssociation
    HasAndBelongsToMany
    HasMany
    HasOne
    SingularAssociation
  - ClassMethods
  - CollectionAssociation
  - CollectionProxy
  - Deprecation
  - DisableJoinsAssociationScope
  - ForeignAssociation
  - HasManyAssociation
  - HasManyThroughAssociation
  - HasOneAssociation
  - HasOneThroughAssociation
  - JoinDependency
    Aliases
    JoinAssociation
    JoinBase
    JoinPart
  - NestedError
  - Preloader
    Batch
    Branch
    ThroughAssociation
  - SingularAssociation
  - ThroughAssociation
- AsynchronousQueriesTracker
  - Session
- AsynchronousQueryInsideTransactionError
- AttributeAssignment
- AttributeAssignmentError
- AttributeMethods
  - BeforeTypeCast
  - ClassMethods
  - CompositePrimaryKey
  - Dirty
  - GeneratedAttributeMethods
  - PrimaryKey
    ClassMethods
  - Query
  - Read
    ClassMethods
  - Serialization
    ClassMethods
    ColumnNotSerializableError
  - TimeZoneConversion
    ClassMethods
    TimeZoneConverter
  - Write
    ClassMethods
- Attributes
  - ClassMethods
- AutosaveAssociation
  - AssociationBuilderExtension
  - ClassMethods
- Base
- Batches
  - BatchEnumerator
- Calculations
  - ColumnAliasTracker
- Callbacks
  - ClassMethods
- CheckViolation
- Coders
  - ColumnSerializer
  - JSON
  - YAMLColumn
    SafeCoder
- CompositePrimaryKeyMismatchError
- ConcurrentMigrationError
- ConfigurationError
- ConnectionAdapters
  - AbstractAdapter
    Version
  - AbstractMysqlAdapter
    StatementPool
  - AlterTable
  - BoundSchemaReflection
    FakePool
  - ColumnMethods
  - ConnectionHandler
    ConnectionDescriptor
  - ConnectionPool
    BiasableQueue
    BiasedConditionVariable
    ConnectionLeasingQueue
    ExecutorHooks
    Lease
    LeaseRegistry
    Queue
    Reaper
    WeakThreadKeyMap
  - DatabaseLimits
  - DatabaseStatements
  - Deduplicable
    ClassMethods
  - IndexDefinition
  - MySQL
    Column
    ColumnMethods
    DatabaseStatements
    ExplainPrettyPrinter
    IndexDefinition
    Quoting
    ClassMethods
    SchemaCreation
    SchemaDumper
    SchemaStatements
    Table
    TableDefinition
    TypeMetadata
  - Mysql2
    DatabaseStatements
  - Mysql2Adapter
  - NullPool
    NullConfig
  - NullTransaction
  - PoolConfig
  - PoolManager
  - PostgreSQL
    AlterTable
    Column
    ColumnMethods
    DatabaseStatements
    ExplainPrettyPrinter
    Name
    OID
    Array
    Bit
    Data
    BitVarying
    Bytea
    Cidr
    Date
    DateTime
    Decimal
    Enum
    Hstore
    Inet
    Interval
    Jsonb
    LegacyPoint
    Macaddr
    Money
    Oid
    Point
    Range
    SpecializedString
    Timestamp
    TimestampWithTimeZone
    TypeMapInitializer
    Uuid
    Vector
    Xml
    Data
    Quoting
    ClassMethods
    IntegerOutOf64BitRange
    ReferentialIntegrity
    SchemaCreation
    SchemaDumper
    SchemaStatements
    Table
    TableDefinition
    Utils
  - PostgreSQLAdapter
    MoneyDecoder
    StatementPool
  - QueryCache
    ConnectionPoolConfiguration
    QueryCacheRegistry
    Store
  - Quoting
    ClassMethods
  - RealTransaction
  - ReferenceDefinition
  - RestartParentTransaction
  - SQLite3
    Column
    DatabaseStatements
    ExplainPrettyPrinter
    Quoting
    ClassMethods
    SchemaCreation
    SchemaDumper
    SchemaStatements
    TableDefinition
  - SQLite3Adapter
    SQLite3Integer
    StatementPool
  - SavepointTransaction
  - Savepoints
  - SchemaCache
  - SchemaCreation
  - SchemaDumper
  - SchemaReflection
  - SchemaStatements
  - StatementPool
  - Table
  - TableDefinition
  - Transaction
    Callback
  - TransactionInstrumenter
    InstrumentationAlreadyStartedError
    InstrumentationNotStartedError
  - TransactionManager
  - TransactionState
  - Trilogy
    DatabaseStatements
  - TrilogyAdapter
- ConnectionFailed
- ConnectionHandling
- ConnectionNotDefined
- ConnectionNotEstablished
- ConnectionTimeoutError
- Core
  - ClassMethods
  - InspectionMask
- CounterCache
  - ClassMethods
- DangerousAttributeError
- DatabaseAlreadyExists
- DatabaseConfigurations
  - ConnectionUrlResolver
  - DatabaseConfig
  - HashConfig
  - InvalidConfigurationError
  - UrlConfig
- DatabaseConnectionError
- DatabaseVersionError
- Deadlocked
- DelegatedType
- Delegation
- DeleteRestrictionError
- DeprecatedAssociationError
- DestroyAssociationAsyncError
- DestroyAssociationAsyncJob
- DisableJoinsAssociationRelation
- DuplicateMigrationNameError
- DuplicateMigrationVersionError
- DynamicMatchers
  - FindBy
  - FindByBang
  - Method
- EagerLoadPolymorphicError
- Encryption
  - AutoFilteredParameters
  - Cipher
    Aes256Gcm
  - Config
  - Configurable
  - Context
  - Contexts
  - DerivedSecretKeyProvider
  - DeterministicKeyProvider
  - EncryptableRecord
  - EncryptedAttributeType
  - EncryptedFixtures
  - EncryptingOnlyEncryptor
  - Encryptor
  - EnvelopeEncryptionKeyProvider
  - Errors
    Base
    Configuration
    Decryption
    Encoding
    EncryptedContentIntegrity
    Encryption
    ForbiddenClass
  - ExtendedDeterministicQueries
    AdditionalValue
    CoreQueries
    EncryptedQuery
    ExtendedEncryptableType
    RelationQueries
  - ExtendedDeterministicUniquenessValidator
    EncryptedUniquenessValidator
  - Key
  - KeyGenerator
  - KeyProvider
  - Message
  - MessagePackMessageSerializer
  - MessageSerializer
  - NullEncryptor
  - Properties
  - ReadOnlyNullEncryptor
  - Scheme
- Enum
  - EnumMethods
  - EnumType
- EnvironmentMismatchError
- EnvironmentStorageError
- ExclusionViolation
- ExclusiveConnectionTimeoutError
- Explain
- ExplainRegistry
  - Subscriber
- FilterAttributeHandler
- FinderMethods
- Fixture
  - FixtureError
  - FormatError
- FixtureClassNotFound
- FixtureSet
  - File
  - ModelMetadata
  - RenderContext
  - TableRow
    HasManyThroughProxy
    PrimaryKeyError
    ReflectionProxy
  - TableRows
- FutureResult
  - Complete
  - EventBuffer
  - SelectAll
- Generators
  - ApplicationRecordGenerator
  - Base
  - Migration
    ClassMethods
  - MigrationGenerator
  - ModelGenerator
  - MultiDbGenerator
- HasManyThroughAssociationNotFoundError
- HasManyThroughAssociationPointlessSourceTypeError
- HasManyThroughAssociationPolymorphicSourceError
- HasManyThroughAssociationPolymorphicThroughError
- HasManyThroughCantAssociateThroughHasOneOrManyReflection
- HasManyThroughNestedAssociationsAreReadonly
- HasManyThroughOrderError
- HasManyThroughSourceAssociationNotFoundError
- HasOneAssociationPolymorphicThroughError
- HasOneThroughCantAssociateThroughCollection
- HasOneThroughCantAssociateThroughHasOneOrManyReflection
- HasOneThroughNestedAssociationsAreReadonly
- IllegalMigrationNameError
- Inheritance
  - ClassMethods
- InsertAll
  - Builder
- Integration
  - ClassMethods
- InternalMetadata
  - NullInternalMetadata
- InvalidForeignKey
- InvalidMigrationTimestampError
- InverseOfAssociationNotFoundError
- InverseOfAssociationRecursiveError
- IrreversibleMigration
- IrreversibleOrderError
- LegacyYamlAdapter
- LockWaitTimeout
- Locking
  - LockingType
  - Optimistic
    ClassMethods
  - Pessimistic
- LogSubscriber
- Marshalling
  - Methods
- MessagePack
  - Decoder
  - Encoder
  - Extensions
- Middleware
  - DatabaseSelector
    Resolver
    Session
  - ShardSelector
- Migration
  - CheckPending
  - CommandRecorder
    StraightReversions
  - Compatibility
  - Current
  - DefaultSchemaVersionsFormatter
  - DefaultStrategy
  - ExecutionStrategy
  - JoinTable
  - V8_1
- MigrationContext
- MigrationError
- Migrator
- MismatchedForeignKey
- MissingRequiredOrderError
- ModelSchema
  - ClassMethods
- MultiparameterAssignmentErrors
- NestedAttributes
  - ClassMethods
  - TooManyRecords
- NoDatabaseError
- NoEnvironmentInSchemaError
- NoTouching
  - ClassMethods
- NotNullViolation
- PendingMigrationConnection
- PendingMigrationError
- Persistence
  - ClassMethods
- PredicateBuilder
  - ArrayHandler
    NullPredicate
  - AssociationQueryValue
  - BasicObjectHandler
  - PolymorphicArrayValue
  - RangeHandler
  - RelationHandler
- PreparedStatementCacheExpired
- PreparedStatementInvalid
- Promise
  - Complete
- ProtectedEnvironmentError
- QueryAborted
- QueryCache
  - ClassMethods
  - ExecutorHooks
- QueryCanceled
- QueryLogs
  - GetKeyHandler
  - IdentityHandler
  - LegacyFormatter
  - SQLCommenter
  - ZeroArityHandler
- QueryMethods
  - CTEJoin
  - WhereChain
- Querying
- Railtie
- Railties
  - ControllerRuntime
    ClassMethods
  - JobCheckpoints
  - JobRuntime
- RangeError
- ReadOnlyError
- ReadOnlyRecord
- ReadonlyAttributeError
- ReadonlyAttributes
  - ClassMethods
  - HasReadonlyAttributes
- RecordInvalid
- RecordNotDestroyed
- RecordNotFound
- RecordNotSaved
- RecordNotUnique
- Reflection
- Relation
  - ExplainProxy
  - FromClause
  - HashMerger
  - Merger
  - QueryAttribute
  - StrictLoadingScope
  - WhereClause
- Result
  - IndexedRow
- Rollback
- RuntimeRegistry
  - Stats
- SQLWarning
- Sanitization
  - ClassMethods
- Schema
  - Definition
    ClassMethods
- SchemaDumper
- SchemaMigration
  - NullSchemaMigration
- Scoping
  - ClassMethods
  - Default
    ClassMethods
  - DefaultScope
  - Named
    ClassMethods
  - ScopeRegistry
- SecurePassword
  - ClassMethods
- SecureToken
  - ClassMethods
  - MinimumLengthError
- Serialization
- SerializationFailure
- SerializationTypeMismatch
- SignedId
- SoleRecordExceeded
- SpawnMethods
- StaleObjectError
- StatementCache
  - BindMap
  - Params
  - PartialQuery
  - PartialQueryCollector
  - Query
  - Substitute
- StatementInvalid
- StatementTimeout
- Store
- StrictLoadingViolationError
- StructuredEventSubscriber
- SubclassNotFound
- Suppressor
  - ClassMethods
- TableMetadata
- TableNotSpecified
- Tasks
- TestDatabases
- TestFixtures
  - ClassMethods
- ThroughCantAssociateThroughHasOneOrManyReflection
- ThroughNestedAssociationsAreReadonly
- Timestamp
  - ClassMethods
- TokenFor
  - ClassMethods
  - RelationMethods
- TouchLater
- Transaction
- TransactionIsolationError
- TransactionRollbackError
- Transactions
  - ClassMethods
- Translation
- Type
  - Date
  - DateTime
  - DecimalWithoutScale
  - HashLookupTypeMap
  - Internal
    Timezone
  - Json
  - Serialized
  - Text
  - Time
    Value
  - TypeMap
  - UnsignedInteger
- TypeCaster
  - Connection
  - Map
- UnknownAttributeReference
- UnknownMigrationVersionError
- UnknownPrimaryKey
- UnmodifiableRelation
- VERSION
- Validations
- ValueTooLong
- WrappedDatabaseException
Arel

ActiveRecord::
Migration::
V8_1::

class ActiveRecord::Migration::V8_1