ent/entc/gen/template/dialect/sql/feature/migratediff.tmpl

{{/*
Copyright 2019-present Facebook Inc. All rights reserved.
This source code is licensed under the Apache 2.0 license found
in the LICENSE file in the root directory of this source tree.
*/}}

{{/* gotype: entgo.io/ent/entc/gen.Graph */}}

{{ define "migrate/diff" }}
// 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 Diff(ctx context.Context, url string, opts ...schema.MigrateOption) error {
    return NamedDiff(ctx, url, "changes", opts...)
}

// 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.
func NamedDiff(ctx context.Context, url, name string, opts ...schema.MigrateOption) error {
    return schema.Diff(ctx, url, name, Tables, opts...)
}
// Diff creates a migration file containing the statements to resolve the diff
// between the Ent schema and the connected database.
func (s *Schema) Diff(ctx context.Context, opts ...schema.MigrateOption) error {
    migrate, err := schema.NewMigrate(s.drv, opts...)
    if err != nil {
        return fmt.Errorf("ent/migrate: %w", err)
    }
    return migrate.Diff(ctx, Tables...)
}

// NamedDiff creates a named migration file containing the statements to resolve the diff
// between the Ent schema and the connected database.
func (s *Schema) NamedDiff(ctx context.Context, name string, opts ...schema.MigrateOption) error {
    migrate, err := schema.NewMigrate(s.drv, opts...)
    if err != nil {
        return fmt.Errorf("ent/migrate: %w", err)
    }
    return migrate.NamedDiff(ctx, name, Tables...)
}
{{ end }}