masina: Rails patterns as generators

Most Rails teams collect patterns over time. A service object here, a query object there, a command shape, a policy shape, a folder convention, a spec convention. The hard part is rarely inventing the pattern once. The hard part is repeating it consistently after the project has moved on.

masina packages that kind of repetition into generators. Instead of retyping a familiar structure from memory, the library gives the pattern a command. That changes the pattern from tribal knowledge into a reusable tool.

Generators are useful because they sit close to the moment of creation. When a developer is adding a feature, the generator can lay down the files, names, and test shape before the first implementation detail distracts from the structure. The result is not magic. It is just a smaller starting cost for doing things the same way twice.

That is the spirit of masina: if a pattern earns its place in the app, make it easy to create again. If it does not earn that place, do not turn it into ceremony.

Use it when:

• A Rails app has repeated architectural shapes.
• New files need consistent names, paths, and specs.
• Team conventions are useful but easy to forget.
• The cost of starting the right way is higher than it should be.

The best generators are quiet. They do not replace design judgment. They remove the dull parts so the judgment has more room.