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Make sure missing data is handled gracefully
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This commit is contained in:
Stefan Bethke 2026-10-16 18:58:29 +02:00
commit 79eac5c7c5
2 changed files with 23 additions and 10 deletions
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4
README.md
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@ -43,4 +43,6 @@ days:
Wide screens get one column per day on an hour grid, with tours that start at the same time side by side. The first column shows the hour wherever the first day has no tour in it. On narrow screens a day picker shows one day at a time, starting with today's day during the event.
For a different event than the page's section, pass its name: `{{< schedule 39c3 >}}`.
For a different event than the page's section, pass its name: `{{< schedule 39c3 >}}`.
Without a data file, or without any tours in it, the shortcode renders nothing and the build logs a warning. To silence it, for example for an upcoming event, add `warning-schedule-empty` to `ignoreLogs` in `hugo.yaml`.

29
layouts/_shortcodes/schedule.html
View file

@ -6,10 +6,20 @@ Usage: {{< schedule >}} on a section page (the event is the section name),
or {{< schedule 39c3 >}}.
*/ -}}
{{- $event := .Get 0 | default .Page.Section -}}
{{- $schedule := index hugo.Data.schedule $event -}}
{{- if not $schedule -}}
{{- errorf "schedule: no data file data/schedule/%s.yaml: %s" $event .Position -}}
{{- /* A missing or empty data file, or one without tours, renders nothing but a warning. */ -}}
{{- $file := false -}}
{{- $days := slice -}}
{{- with hugo.Data.schedule -}}
{{- if isset . $event }}{{ $file = true }}{{ end -}}
{{- with index . $event }}{{ with .days }}{{ $days = . }}{{ end }}{{ end -}}
{{- end -}}
{{- $tourCount := 0 -}}
{{- range $days }}{{ with .tours }}{{ $tourCount = add $tourCount (len .) }}{{ end }}{{ end -}}
{{- if not $file -}}
{{- warnidf "warning-schedule-empty" "schedule: no data file data/schedule/%s.yaml: %s" $event .Position -}}
{{- else if not $tourCount -}}
{{- warnidf "warning-schedule-empty" "schedule: no tours in data/schedule/%s.yaml: %s" $event .Position -}}
{{- else -}}
{{- $id := printf "schedule-%s" $event | anchorize -}}
{{- /* Tour page titles start with the event name ("39C3 Rote Flora"); the cards don't need it. */ -}}
{{- $prefix := printf `(?i)^%s\s+` $event -}}
@ -20,7 +30,7 @@ Every hour from the first to the last tour starts a new row ($hours) with a line
so an hour without tours still gets a row.
*/ -}}
{{- $slotCount := dict -}}
{{- range $schedule.days -}}
{{- range $days -}}
{{- $count := dict -}}
{{- range .tours -}}
{{- $count = merge $count (dict .time (add (index $count .time | default 0) 1)) -}}
@ -51,17 +61,17 @@ so an hour without tours still gets a row.
{{- end -}}
<div class="schedule" id="{{ $id }}" data-schedule>
<div class="schedule__picker" role="group" aria-label="{{ i18n "schedule_pick_day" }}" hidden>
{{- range $schedule.days }}
{{- range $days }}
<button type="button" class="schedule__pick" aria-controls="{{ $id }}-day-{{ .day }}" aria-pressed="false" data-date="{{ .date }}">{{ i18n "schedule_day" (dict "Day" .day) }} <span class="schedule__pick-date">{{ time.AsTime .date | time.Format "2.1." }}</span></button>
{{- end }}
</div>
<div class="schedule__days" style="--schedule-days: {{ len $schedule.days }}; --schedule-rows: {{ $rows }}">
{{- range $column, $day := $schedule.days }}
<div class="schedule__days" style="--schedule-days: {{ len $days }}; --schedule-rows: {{ $rows }}">
{{- range $column, $day := $days }}
<section class="schedule__day" id="{{ $id }}-day-{{ .day }}" aria-labelledby="{{ $id }}-day-{{ .day }}-title" style="--schedule-column: {{ add $column 1 }}">
<h2 class="schedule__day-title" id="{{ $id }}-day-{{ .day }}-title">{{ i18n "schedule_day" (dict "Day" .day) }} <span class="schedule__date">{{ time.AsTime .date | time.Format "Mon 2.1." }}</span></h2>
<ol class="schedule__list">
{{- $seen := dict }}
{{- range sort .tours "time" }}
{{- range sort (.tours | default slice) "time" }}
{{- $nth := index $seen .time | default 0 }}
{{- $seen = merge $seen (dict .time (add $nth 1)) }}
{{- $page := $.Page.GetPage .tour }}
@ -84,7 +94,7 @@ so an hour without tours still gets a row.
{{- end }}
{{- /* Hour lines; where the first day has no tour in the hour's first row, its column shows the hour.
They sit in .schedule__days, whose first row holds the day titles, hence the + 1. */}}
{{- $firstDay := index $schedule.days 0 }}
{{- $firstDay := index $days 0 }}
{{- range $hours }}
{{- $row := .row }}
<div class="schedule__hour" style="--schedule-row: {{ add .row 1 }}" aria-hidden="true">
@ -95,3 +105,4 @@ They sit in .schedule__days, whose first row holds the day titles, hence the + 1
{{- end }}
</div>
</div>
{{- end }}