migrate

package
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 Go to latest Published: Jun 20, 2023 License: MIT Imports: 6 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

View Source 
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
	// WithForeignKeys enables creating foreign-key in schema DDL. This defaults to true.
	WithForeignKeys = schema.WithForeignKeys
)
View Source 
var (
	// GroupsColumns holds the columns for the "groups" table.
	GroupsColumns = []*schema.Column{
		{Name: "id", Type: field.TypeUUID},
		{Name: "created_at", Type: field.TypeTime},
		{Name: "updated_at", Type: field.TypeTime},
	}
	// GroupsTable holds the schema information for the "groups" table.
	GroupsTable = &schema.Table{
		Name:       "groups",
		Columns:    GroupsColumns,
		PrimaryKey: []*schema.Column{GroupsColumns[0]},
	}
	// MessagesColumns holds the columns for the "messages" table.
	MessagesColumns = []*schema.Column{
		{Name: "id", Type: field.TypeUUID},
		{Name: "created_at", Type: field.TypeTime},
		{Name: "updated_at", Type: field.TypeTime},
		{Name: "body", Type: field.TypeString},
	}
	// MessagesTable holds the schema information for the "messages" table.
	MessagesTable = &schema.Table{
		Name:       "messages",
		Columns:    MessagesColumns,
		PrimaryKey: []*schema.Column{MessagesColumns[0]},
	}
	// NotificationsColumns holds the columns for the "notifications" table.
	NotificationsColumns = []*schema.Column{
		{Name: "id", Type: field.TypeUUID},
		{Name: "created_at", Type: field.TypeTime},
		{Name: "updated_at", Type: field.TypeTime},
	}
	// NotificationsTable holds the schema information for the "notifications" table.
	NotificationsTable = &schema.Table{
		Name:       "notifications",
		Columns:    NotificationsColumns,
		PrimaryKey: []*schema.Column{NotificationsColumns[0]},
	}
	// PostsColumns holds the columns for the "posts" table.
	PostsColumns = []*schema.Column{
		{Name: "id", Type: field.TypeUUID},
		{Name: "created_at", Type: field.TypeTime},
		{Name: "updated_at", Type: field.TypeTime},
		{Name: "user_posts", Type: field.TypeUUID, Nullable: true},
	}
	// PostsTable holds the schema information for the "posts" table.
	PostsTable = &schema.Table{
		Name:       "posts",
		Columns:    PostsColumns,
		PrimaryKey: []*schema.Column{PostsColumns[0]},
		ForeignKeys: []*schema.ForeignKey{
			{
				Symbol:     "posts_users_posts",
				Columns:    []*schema.Column{PostsColumns[3]},
				RefColumns: []*schema.Column{UsersColumns[0]},
				OnDelete:   schema.SetNull,
			},
		},
	}
	// SettingsColumns holds the columns for the "settings" table.
	SettingsColumns = []*schema.Column{
		{Name: "id", Type: field.TypeUUID},
		{Name: "created_at", Type: field.TypeTime},
		{Name: "updated_at", Type: field.TypeTime},
	}
	// SettingsTable holds the schema information for the "settings" table.
	SettingsTable = &schema.Table{
		Name:       "settings",
		Columns:    SettingsColumns,
		PrimaryKey: []*schema.Column{SettingsColumns[0]},
	}
	// UsersColumns holds the columns for the "users" table.
	UsersColumns = []*schema.Column{
		{Name: "id", Type: field.TypeUUID},
		{Name: "created_at", Type: field.TypeTime},
		{Name: "updated_at", Type: field.TypeTime},
		{Name: "first_name", Type: field.TypeString},
		{Name: "last_name", Type: field.TypeString},
		{Name: "email_address", Type: field.TypeString, Unique: true},
		{Name: "account_address", Type: field.TypeString, Unique: true},
		{Name: "alias", Type: field.TypeString, Unique: true},
		{Name: "bio", 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]},
	}
	// GroupUsersColumns holds the columns for the "group_users" table.
	GroupUsersColumns = []*schema.Column{
		{Name: "group_id", Type: field.TypeUUID},
		{Name: "user_id", Type: field.TypeUUID},
	}
	// GroupUsersTable holds the schema information for the "group_users" table.
	GroupUsersTable = &schema.Table{
		Name:       "group_users",
		Columns:    GroupUsersColumns,
		PrimaryKey: []*schema.Column{GroupUsersColumns[0], GroupUsersColumns[1]},
		ForeignKeys: []*schema.ForeignKey{
			{
				Symbol:     "group_users_group_id",
				Columns:    []*schema.Column{GroupUsersColumns[0]},
				RefColumns: []*schema.Column{GroupsColumns[0]},
				OnDelete:   schema.Cascade,
			},
			{
				Symbol:     "group_users_user_id",
				Columns:    []*schema.Column{GroupUsersColumns[1]},
				RefColumns: []*schema.Column{UsersColumns[0]},
				OnDelete:   schema.Cascade,
			},
		},
	}
	// MessageToColumns holds the columns for the "message_to" table.
	MessageToColumns = []*schema.Column{
		{Name: "message_id", Type: field.TypeUUID},
		{Name: "from_id", Type: field.TypeUUID},
	}
	// MessageToTable holds the schema information for the "message_to" table.
	MessageToTable = &schema.Table{
		Name:       "message_to",
		Columns:    MessageToColumns,
		PrimaryKey: []*schema.Column{MessageToColumns[0], MessageToColumns[1]},
		ForeignKeys: []*schema.ForeignKey{
			{
				Symbol:     "message_to_message_id",
				Columns:    []*schema.Column{MessageToColumns[0]},
				RefColumns: []*schema.Column{MessagesColumns[0]},
				OnDelete:   schema.Cascade,
			},
			{
				Symbol:     "message_to_from_id",
				Columns:    []*schema.Column{MessageToColumns[1]},
				RefColumns: []*schema.Column{MessagesColumns[0]},
				OnDelete:   schema.Cascade,
			},
		},
	}
	// UserFollowingColumns holds the columns for the "user_following" table.
	UserFollowingColumns = []*schema.Column{
		{Name: "user_id", Type: field.TypeUUID},
		{Name: "follower_id", Type: field.TypeUUID},
	}
	// UserFollowingTable holds the schema information for the "user_following" table.
	UserFollowingTable = &schema.Table{
		Name:       "user_following",
		Columns:    UserFollowingColumns,
		PrimaryKey: []*schema.Column{UserFollowingColumns[0], UserFollowingColumns[1]},
		ForeignKeys: []*schema.ForeignKey{
			{
				Symbol:     "user_following_user_id",
				Columns:    []*schema.Column{UserFollowingColumns[0]},
				RefColumns: []*schema.Column{UsersColumns[0]},
				OnDelete:   schema.Cascade,
			},
			{
				Symbol:     "user_following_follower_id",
				Columns:    []*schema.Column{UserFollowingColumns[1]},
				RefColumns: []*schema.Column{UsersColumns[0]},
				OnDelete:   schema.Cascade,
			},
		},
	}
	// Tables holds all the tables in the schema.
	Tables = []*schema.Table{
		GroupsTable,
		MessagesTable,
		NotificationsTable,
		PostsTable,
		SettingsTable,
		UsersTable,
		GroupUsersTable,
		MessageToTable,
		UserFollowingTable,
	}
)

Functions

func Create 

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

Create creates all table resources using the given schema driver.

func Diff 

func Diff(ctx context.Context, url string, opts ...schema.MigrateOption) error

Diff compares the state read from a database connection or migration directory with the state defined by the Ent schema. Changes will be written to new migration files.

func NamedDiff 

func NamedDiff(ctx context.Context, url, name string, opts ...schema.MigrateOption) error

NamedDiff compares the state read from a database connection or migration directory with the state defined by the Ent schema. Changes will be written to new named migration files.

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) Diff 

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

Diff creates a migration file containing the statements to resolve the diff between the Ent schema and the connected database.

func (*Schema) NamedDiff 

func (s *Schema) NamedDiff(ctx context.Context, name string, opts ...schema.MigrateOption) error

NamedDiff creates a named migration file containing the statements to resolve the diff between the Ent schema and the connected database.

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)
}

Source Files

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