{% if not history_enabled %}
The label history is switched off, so no changes are being recorded.
Enable it under Config → Local Config → Label history
(LABEL_HISTORY_ENABLED). It writes one entry per host save
that changes labels, so leave it off where imports rewrite labels on
every run.
{% elif not events %}
No label changes have been recorded for this host yet.
The history starts the first time a label is added, updated, or removed.
{% else %}
{% set ns = namespace(prev_day='') %}
{% for event in events %}
{% set day = event.changed_at.strftime('%Y-%m-%d') %}
{% if day != ns.prev_day %}
{{ day }}
{% set ns.prev_day = day %}
{% endif %}
{{ event.changed_at.strftime('%H:%M:%S') }}
{{ event.source or 'import' }}
{% if event.user_email %}
{{ event.user_email }}
{% endif %}
{{ event.changes|length }} label(s)
{% for c in event.changes %}
{{ c.change }}
{{ c.key }}
{% if c.change == 'add' %}
{{ c.new_value or '' }}
{% elif c.change == 'remove' %}
{{ c.old_value or '' }}
{% else %}
{{ c.old_value or '—' }}
→
{{ c.new_value or '—' }}
{% endif %}
{% endfor %}
{% endfor %}
{% if events|length >= 200 %}
Showing the 200 most recent changes.
{% endif %}
{% endif %}