data-designer-template¶

The template plugin is the reference implementation for a simple Data Designer column generator. It adds a text-transform column type that writes an output column by transforming text from an existing source column.

Installation¶

uv add data-designer data-designer-template

Column type¶

Use the text-transform column type when a dataset needs a derived text column using one of the supported string transforms.

Field	Required	Description
`name`	Yes	Output column name.
`source_column`	Yes	Existing text column to transform.
`transform`	No	One of `upper`, `lower`, or `title`; defaults to `upper`.

Implementation notes¶

The package keeps plugin registration in plugin.py, configuration in config.py, and generation logic in impl.py. New plugins should follow the same separation unless their behavior needs a different shape.