mnesis.operators.template_utils

template_utils

Shared Jinja2 template utilities for operator modules.

require_item_variable

require_item_variable(template_str: str) -> None

Raise ValueError if the Jinja2 template does not reference the item variable.

Uses Jinja2 AST parsing instead of regex for correctness with complex expressions like {{ item['key'] }} and {{ item | upper }}. Invalid template syntax is also reported as ValueError.