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 true.
	WithFixture = schema.WithFixture
)

var (
	// JiangHuRensColumns holds the columns for the "jiang_hu_rens" table.
	JiangHuRensColumns = []*schema.Column{
		{Name: "id", Type: field.TypeInt, Increment: true},
		{Name: "created_at", Type: field.TypeTime},
		{Name: "updated_at", Type: field.TypeTime},
		{Name: "name", Type: field.TypeString, Unique: true},
		{Name: "age", Type: field.TypeUint},
		{Name: "sex", Type: field.TypeBool},
		{Name: "jiang_hu_ren_spouse", Type: field.TypeInt, Unique: true, Nullable: true},
		{Name: "jiang_hu_ren_apprentices", Type: field.TypeInt, Nullable: true},
		{Name: "men_pai_disciples", Type: field.TypeInt, Nullable: true},
	}
	// JiangHuRensTable holds the schema information for the "jiang_hu_rens" table.
	JiangHuRensTable = &schema.Table{
		Name:       "jiang_hu_rens",
		Columns:    JiangHuRensColumns,
		PrimaryKey: []*schema.Column{JiangHuRensColumns[0]},
		ForeignKeys: []*schema.ForeignKey{
			{
				Symbol:  "jiang_hu_rens_jiang_hu_rens_spouse",
				Columns: []*schema.Column{JiangHuRensColumns[6]},

				RefColumns: []*schema.Column{JiangHuRensColumns[0]},
				OnDelete:   schema.SetNull,
			},
			{
				Symbol:  "jiang_hu_rens_jiang_hu_rens_apprentices",
				Columns: []*schema.Column{JiangHuRensColumns[7]},

				RefColumns: []*schema.Column{JiangHuRensColumns[0]},
				OnDelete:   schema.SetNull,
			},
			{
				Symbol:  "jiang_hu_rens_men_pais_disciples",
				Columns: []*schema.Column{JiangHuRensColumns[8]},

				RefColumns: []*schema.Column{MenPaisColumns[0]},
				OnDelete:   schema.SetNull,
			},
		},
	}
	// MenPaisColumns holds the columns for the "men_pais" table.
	MenPaisColumns = []*schema.Column{
		{Name: "id", Type: field.TypeInt, Increment: true},
		{Name: "created_at", Type: field.TypeTime},
		{Name: "updated_at", Type: field.TypeTime},
		{Name: "name", Type: field.TypeString, Unique: true},
		{Name: "address", Type: field.TypeString, Default: ""},
	}
	// MenPaisTable holds the schema information for the "men_pais" table.
	MenPaisTable = &schema.Table{
		Name:        "men_pais",
		Columns:     MenPaisColumns,
		PrimaryKey:  []*schema.Column{MenPaisColumns[0]},
		ForeignKeys: []*schema.ForeignKey{},
	}
	// WeaponsColumns holds the columns for the "weapons" table.
	WeaponsColumns = []*schema.Column{
		{Name: "id", Type: field.TypeInt, Increment: true},
		{Name: "created_at", Type: field.TypeTime},
		{Name: "updated_at", Type: field.TypeTime},
		{Name: "name", Type: field.TypeString},
		{Name: "level", Type: field.TypeInt},
		{Name: "category", Type: field.TypeInt},
		{Name: "jiang_hu_ren_weapon", Type: field.TypeInt, Unique: true, Nullable: true},
	}
	// WeaponsTable holds the schema information for the "weapons" table.
	WeaponsTable = &schema.Table{
		Name:       "weapons",
		Columns:    WeaponsColumns,
		PrimaryKey: []*schema.Column{WeaponsColumns[0]},
		ForeignKeys: []*schema.ForeignKey{
			{
				Symbol:  "weapons_jiang_hu_rens_weapon",
				Columns: []*schema.Column{WeaponsColumns[6]},

				RefColumns: []*schema.Column{JiangHuRensColumns[0]},
				OnDelete:   schema.SetNull,
			},
		},
	}
	// WuGongsColumns holds the columns for the "wu_gongs" table.
	WuGongsColumns = []*schema.Column{
		{Name: "id", Type: field.TypeInt, Increment: true},
		{Name: "created_at", Type: field.TypeTime},
		{Name: "updated_at", Type: field.TypeTime},
		{Name: "name", Type: field.TypeString},
		{Name: "damage", Type: field.TypeInt},
		{Name: "level", Type: field.TypeUint8},
	}
	// WuGongsTable holds the schema information for the "wu_gongs" table.
	WuGongsTable = &schema.Table{
		Name:        "wu_gongs",
		Columns:     WuGongsColumns,
		PrimaryKey:  []*schema.Column{WuGongsColumns[0]},
		ForeignKeys: []*schema.ForeignKey{},
	}
	// JiangHuRenFollowingColumns holds the columns for the "jiang_hu_ren_following" table.
	JiangHuRenFollowingColumns = []*schema.Column{
		{Name: "jiang_hu_ren_id", Type: field.TypeInt},
		{Name: "follower_id", Type: field.TypeInt},
	}
	// JiangHuRenFollowingTable holds the schema information for the "jiang_hu_ren_following" table.
	JiangHuRenFollowingTable = &schema.Table{
		Name:       "jiang_hu_ren_following",
		Columns:    JiangHuRenFollowingColumns,
		PrimaryKey: []*schema.Column{JiangHuRenFollowingColumns[0], JiangHuRenFollowingColumns[1]},
		ForeignKeys: []*schema.ForeignKey{
			{
				Symbol:  "jiang_hu_ren_following_jiang_hu_ren_id",
				Columns: []*schema.Column{JiangHuRenFollowingColumns[0]},

				RefColumns: []*schema.Column{JiangHuRensColumns[0]},
				OnDelete:   schema.Cascade,
			},
			{
				Symbol:  "jiang_hu_ren_following_follower_id",
				Columns: []*schema.Column{JiangHuRenFollowingColumns[1]},

				RefColumns: []*schema.Column{JiangHuRensColumns[0]},
				OnDelete:   schema.Cascade,
			},
		},
	}
	// JiangHuRenFriendsColumns holds the columns for the "jiang_hu_ren_friends" table.
	JiangHuRenFriendsColumns = []*schema.Column{
		{Name: "jiang_hu_ren_id", Type: field.TypeInt},
		{Name: "friend_id", Type: field.TypeInt},
	}
	// JiangHuRenFriendsTable holds the schema information for the "jiang_hu_ren_friends" table.
	JiangHuRenFriendsTable = &schema.Table{
		Name:       "jiang_hu_ren_friends",
		Columns:    JiangHuRenFriendsColumns,
		PrimaryKey: []*schema.Column{JiangHuRenFriendsColumns[0], JiangHuRenFriendsColumns[1]},
		ForeignKeys: []*schema.ForeignKey{
			{
				Symbol:  "jiang_hu_ren_friends_jiang_hu_ren_id",
				Columns: []*schema.Column{JiangHuRenFriendsColumns[0]},

				RefColumns: []*schema.Column{JiangHuRensColumns[0]},
				OnDelete:   schema.Cascade,
			},
			{
				Symbol:  "jiang_hu_ren_friends_friend_id",
				Columns: []*schema.Column{JiangHuRenFriendsColumns[1]},

				RefColumns: []*schema.Column{JiangHuRensColumns[0]},
				OnDelete:   schema.Cascade,
			},
		},
	}
	// Tables holds all the tables in the schema.
	Tables = []*schema.Table{
		JiangHuRensTable,
		MenPaisTable,
		WeaponsTable,
		WuGongsTable,
		JiangHuRenFollowingTable,
		JiangHuRenFriendsTable,
	}
)

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)
}