Several more schema statement methods

[ccutrer]

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[Copilot]

Pull request overview

Adds additional schema/migration functionality to activerecord-pg-extensions, primarily by introducing a PostgreSQL ALTER TABLE ... ALTER CONSTRAINT helper and improving migration reversibility around “existence” options.

Changes:

• Add PostgreSQLAdapter#change_constraint with support for deferrable, initially, enforced, and inherit.
• Extend ActiveRecord::Migration::CommandRecorder integration: record/invert change_constraint, and rewrite if_not_exists/if_exists options on several inverted commands to keep reversals idempotent.
• Remove now-unneeded pessimistic-migrations check-constraint wrappers/specs and bump version to 0.7.2.

Reviewed changes

Copilot reviewed 7 out of 10 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
spec/postgresql_adapter_spec.rb	Adds specs for change_constraint SQL generation and reversals for existence options.
spec/pessimistic_migrations_spec.rb	Removes specs for check-constraint if_* behavior.
lib/active_record/pg_extensions/version.rb	Bumps gem version to 0.7.2.
lib/active_record/pg_extensions/railtie.rb	Switches CommandRecorder integration from include to prepend so overrides take effect.
lib/active_record/pg_extensions/postgresql_adapter.rb	Implements change_constraint.
lib/active_record/pg_extensions/pessimistic_migrations.rb	Removes check-constraint if_* wrappers.
lib/active_record/pg_extensions/command_recorder.rb	Adds change_constraint recording/inversion and existence-option rewriting on inversions.
Gemfile.rails-8.0.lock	Updates locked gem version to 0.7.2.
Gemfile.rails-7.2.lock	Updates locked gem version to 0.7.2.
Gemfile.lock	Updates locked gem version to 0.7.2.

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[Copilot]

Pull request overview

Copilot reviewed 8 out of 11 changed files in this pull request and generated 3 comments.