Module author 

Canonical migration authoring core (#166).

Owns the single SchemaDiff -> ordered operations mapping shared by the live makemigrations flow and the offline authoring API. Everything here is pure: no database connection, no filesystem access, no clock reads.

Structs

AuthorMigrationRequest

A complete offline authoring request.

AuthoredArtifact

One in-memory artifact file, path relative to the migrations directory.

AuthoredMigration

The complete authored artifact set for one migration.

MigrationMetadata

Identity and dependency metadata for one authored migration.

PositionedOperations

Explicit portable operations placed around the schema change set.

PythonRenderRequest

Everything needed to render one migration .py.

RenderedSnapshot

One rendered snapshot: file contents keyed by path relative to the migrations directory (e.g. snapshots/v0003/entities.py).

SnapshotContext

Snapshot/version context for one authored migration.

SnapshotRenderRequest

Inputs for rendering one snapshot version.

Enums

ExistingArtifactPolicy

How to treat artifact paths that already exist on disk.

Functions

author_migration

Author the complete artifact set for one migration, in memory.

map_schema_diff

Map a computed [SchemaDiff] into the ordered authoring operation list.

migration_class_name

Convert a migration name suffix into its class name (add_company -> AddCompanyMigration).

py_repr

Render a Python string literal exactly like CPython’s repr().

render_migration_python

Render the complete migration .py source.

render_snapshot

Render the complete snapshot file set in memory.

write_authored_migration

Write every artifact of authored under migrations_dir.