58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
"""Data formatting and serialisation helpers."""
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import json
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def safe(val):
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"""Convert non-serialisable values for JSONB storage."""
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if isinstance(val, list | dict | tuple):
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return json.dumps(val, default=str)
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return val
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def safe_int(val):
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"""Try to cast to int, return None on failure."""
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if val is None:
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return None
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try:
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return int(val)
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except (ValueError, TypeError):
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try:
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return int(float(val))
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except (ValueError, TypeError):
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return None
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def md_preview_table(
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rows: list[dict],
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columns: list[tuple[str, str]],
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formatters: dict[str, callable] | None = None,
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) -> str:
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"""Build a markdown table from a list of row dicts."""
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formatters = formatters or {}
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headers = [label for _, label in columns]
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lines = [
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"| " + " | ".join(headers) + " |",
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"| " + " | ".join("---" for _ in headers) + " |",
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]
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for r in rows:
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cells = []
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for key, _ in columns:
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val = r.get(key)
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if key in formatters:
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cells.append(formatters[key](val))
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else:
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cells.append(str(val) if val is not None else "–")
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lines.append("| " + " | ".join(cells) + " |")
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return "\n".join(lines)
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def format_euro(val) -> str:
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"""Format an integer as €-prefixed, or '–'."""
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return f"€{val:,}" if val else "–"
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def format_area(val) -> str:
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"""Format an integer as m², or '–'."""
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return f"{val} m²" if val else "–"
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