migrate

Documentation

Index

• Variables
• type Schema
  • func NewSchema(drv dialect.Driver) *Schema
  • func (s *Schema) Create(ctx context.Context, opts ...schema.MigrateOption) error
  • func (s *Schema) WriteTo(ctx context.Context, w io.Writer, opts ...schema.MigrateOption) error

Variables

var (
	// WithGlobalUniqueID sets the universal ids options to the migration.
	// If this option is enabled, ent migration will allocate a 1<<32 range
	// for the ids of each entity (table).
	// Note that this option cannot be applied on tables that already exist.
	WithGlobalUniqueID = schema.WithGlobalUniqueID
	// WithDropColumn sets the drop column option to the migration.
	// If this option is enabled, ent migration will drop old columns
	// that were used for both fields and edges. This defaults to false.
	WithDropColumn = schema.WithDropColumn
	// WithDropIndex sets the drop index option to the migration.
	// If this option is enabled, ent migration will drop old indexes
	// that were defined in the schema. This defaults to false.
	// Note that unique constraints are defined using `UNIQUE INDEX`,
	// and therefore, it's recommended to enable this option to get more
	// flexibility in the schema changes.
	WithDropIndex = schema.WithDropIndex
	// WithFixture sets the foreign-key renaming option to the migration when upgrading
	// ent from v0.1.0 (issue-#285). Defaults to false.
	WithFixture = schema.WithFixture
	// WithForeignKeys enables creating foreign-key in schema DDL. This defaults to true.
	WithForeignKeys = schema.WithForeignKeys
)

var (
	// EventsColumns holds the columns for the "events" table.
	EventsColumns = []*schema.Column{
		{Name: "id", Type: field.TypeUUID},
		{Name: "name", Type: field.TypeString},
		{Name: "description", Type: field.TypeString, Nullable: true},
		{Name: "tutors_required", Type: field.TypeInt64, Nullable: true},
		{Name: "wallets_reward", Type: field.TypeInt64, Nullable: true},
		{Name: "created_at", Type: field.TypeTime},
		{Name: "start_at", Type: field.TypeTime},
		{Name: "end_at", Type: field.TypeTime},
		{Name: "event_type_events", Type: field.TypeUUID, Nullable: true},
	}
	// EventsTable holds the schema information for the "events" table.
	EventsTable = &schema.Table{
		Name:       "events",
		Columns:    EventsColumns,
		PrimaryKey: []*schema.Column{EventsColumns[0]},
		ForeignKeys: []*schema.ForeignKey{
			{
				Symbol:     "events_event_types_events",
				Columns:    []*schema.Column{EventsColumns[8]},
				RefColumns: []*schema.Column{EventTypesColumns[0]},
				OnDelete:   schema.SetNull,
			},
		},
	}
	// EventTypesColumns holds the columns for the "event_types" table.
	EventTypesColumns = []*schema.Column{
		{Name: "id", Type: field.TypeUUID},
		{Name: "name", Type: field.TypeString, Unique: true},
		{Name: "color", Type: field.TypeString, Unique: true},
	}
	// EventTypesTable holds the schema information for the "event_types" table.
	EventTypesTable = &schema.Table{
		Name:       "event_types",
		Columns:    EventTypesColumns,
		PrimaryKey: []*schema.Column{EventTypesColumns[0]},
	}
	// RolesColumns holds the columns for the "roles" table.
	RolesColumns = []*schema.Column{
		{Name: "id", Type: field.TypeUUID},
		{Name: "name", Type: field.TypeString, Unique: true},
		{Name: "event", Type: field.TypeString, Default: "false"},
		{Name: "event_write", Type: field.TypeString, Default: "false"},
		{Name: "user", Type: field.TypeString, Default: "false"},
		{Name: "user_subscription", Type: field.TypeString, Default: "false"},
		{Name: "user_write", Type: field.TypeString, Default: "false"},
	}
	// RolesTable holds the schema information for the "roles" table.
	RolesTable = &schema.Table{
		Name:       "roles",
		Columns:    RolesColumns,
		PrimaryKey: []*schema.Column{RolesColumns[0]},
	}
	// UsersColumns holds the columns for the "users" table.
	UsersColumns = []*schema.Column{
		{Name: "id", Type: field.TypeUUID},
		{Name: "login", Type: field.TypeString, Unique: true},
		{Name: "first_name", Type: field.TypeString, Nullable: true},
		{Name: "last_name", Type: field.TypeString, Nullable: true},
		{Name: "display_name", Type: field.TypeString, Nullable: true},
		{Name: "image_path", Type: field.TypeString, Nullable: true},
	}
	// UsersTable holds the schema information for the "users" table.
	UsersTable = &schema.Table{
		Name:       "users",
		Columns:    UsersColumns,
		PrimaryKey: []*schema.Column{UsersColumns[0]},
	}
	// EventUsersColumns holds the columns for the "event_users" table.
	EventUsersColumns = []*schema.Column{
		{Name: "event_id", Type: field.TypeUUID},
		{Name: "user_id", Type: field.TypeUUID},
	}
	// EventUsersTable holds the schema information for the "event_users" table.
	EventUsersTable = &schema.Table{
		Name:       "event_users",
		Columns:    EventUsersColumns,
		PrimaryKey: []*schema.Column{EventUsersColumns[0], EventUsersColumns[1]},
		ForeignKeys: []*schema.ForeignKey{
			{
				Symbol:     "event_users_event_id",
				Columns:    []*schema.Column{EventUsersColumns[0]},
				RefColumns: []*schema.Column{EventsColumns[0]},
				OnDelete:   schema.Cascade,
			},
			{
				Symbol:     "event_users_user_id",
				Columns:    []*schema.Column{EventUsersColumns[1]},
				RefColumns: []*schema.Column{UsersColumns[0]},
				OnDelete:   schema.Cascade,
			},
		},
	}
	// RoleUsersColumns holds the columns for the "role_users" table.
	RoleUsersColumns = []*schema.Column{
		{Name: "role_id", Type: field.TypeUUID},
		{Name: "user_id", Type: field.TypeUUID},
	}
	// RoleUsersTable holds the schema information for the "role_users" table.
	RoleUsersTable = &schema.Table{
		Name:       "role_users",
		Columns:    RoleUsersColumns,
		PrimaryKey: []*schema.Column{RoleUsersColumns[0], RoleUsersColumns[1]},
		ForeignKeys: []*schema.ForeignKey{
			{
				Symbol:     "role_users_role_id",
				Columns:    []*schema.Column{RoleUsersColumns[0]},
				RefColumns: []*schema.Column{RolesColumns[0]},
				OnDelete:   schema.Cascade,
			},
			{
				Symbol:     "role_users_user_id",
				Columns:    []*schema.Column{RoleUsersColumns[1]},
				RefColumns: []*schema.Column{UsersColumns[0]},
				OnDelete:   schema.Cascade,
			},
		},
	}
	// Tables holds all the tables in the schema.
	Tables = []*schema.Table{
		EventsTable,
		EventTypesTable,
		RolesTable,
		UsersTable,
		EventUsersTable,
		RoleUsersTable,
	}
)

Types

type Schema

type Schema struct {
	// contains filtered or unexported fields
}

Schema is the API for creating, migrating and dropping a schema.

func NewSchema

func NewSchema(drv dialect.Driver) *Schema

NewSchema creates a new schema client.

func (*Schema) Create

func (s *Schema) Create(ctx context.Context, opts ...schema.MigrateOption) error

Create creates all schema resources.

func (*Schema) WriteTo

func (s *Schema) WriteTo(ctx context.Context, w io.Writer, opts ...schema.MigrateOption) error

WriteTo writes the schema changes to w instead of running them against the database.

if err := client.Schema.WriteTo(context.Background(), os.Stdout); err != nil {
	log.Fatal(err)
}