{# Shared rendering, taking explicit arguments rather than reading context, so a
   caller cannot silently change what a cell means. #}

{% macro cell(spec, row, column, labels, admin_path, registry) -%}
{%- set relation = spec.relations.get(column) if spec.relations else none -%}
{%- if relation is none -%}
{{ render_value(row[column]) }}
{%- else -%}
{%- set key = row[column] -%}
{%- set label = labels.get(column, {}).get(key) if labels else none -%}
{%- set slug = relation.slug or registry.slug_for(relation.model) -%}
{%- if key is none -%}
{{ render_value(none) }}
{%- elif slug -%}
{# The related record is reachable, so the label links to it. #}
<a href="{{ admin_path }}/m/{{ slug }}/{{ key }}">{{ render_value(label if label is not none else key) }}</a>
{%- else -%}
{# Its model is not registered, so there is nowhere to link: label only. #}
{{ render_value(label if label is not none else key) }}
{%- endif -%}
{%- endif -%}
{%- endmacro %}