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Update to add banner to older events. (#15598)
* Update to add banner to older events. * Delete ISSUE-12213-PLAN.md
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‎themes/devopsdays-theme/layouts/event/single.html‎

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{{- if eq .File.BaseFileName "welcome" -}}
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{{- partial "welcome.html" . -}}
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{{- else -}}
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{{- partial "events/non-current-banner.html" . -}}
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<h1>devopsdays {{ $e.city }} - {{ .Title }}</h1>
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{{ .Content }}
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{{- end -}}

‎themes/devopsdays-theme/layouts/partials/events/non-current-banner.html‎

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{{- /*
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Banner to display on non-current event pages, indicating this is not the current event
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and providing a link to the current event for that city.
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*/ -}}
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{{- $e := partial "functions/get-event-data" . -}}
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{{- if and $e $e.city $e.name -}}
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{{- /* Get the current event for this city - pass page context */ -}}
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{{- $currentEvent := partial "functions/get-current-event-for-city" . -}}
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{{- /* Extract year from current event being viewed */ -}}
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{{- $currentViewYear := 0 -}}
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{{- if $e.year -}}
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{{- $currentViewYear = int $e.year -}}
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{{- else if $e.name -}}
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{{- $yearStr := index (split $e.name "-") 0 -}}
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{{- $currentViewYear = int $yearStr -}}
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{{- end -}}
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{{- /* Extract year from current event found */ -}}
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{{- $currentEventYear := 0 -}}
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{{- if and $currentEvent $currentEvent.year -}}
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{{- $currentEventYear = int $currentEvent.year -}}
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{{- else if and $currentEvent $currentEvent.name -}}
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{{- $yearStr := index (split $currentEvent.name "-") 0 -}}
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{{- $currentEventYear = int $yearStr -}}
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{{- end -}}
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{{- /* Only show banner if there is a current event, it's different, and the current view is older or not the latest year */ -}}
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{{- if and $currentEvent (ne $currentEvent.name $e.name) (lt $currentViewYear $currentEventYear) -}}
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{{- /* Determine if current event being viewed is past or just older */ -}}
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{{- $isPast := false -}}
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{{- if and $e.enddate (time $e.enddate) -}}
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{{- $isPast = lt (time $e.enddate) now -}}
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{{- end -}}
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<div class="row">
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<div class="col-md-12">
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<div class="alert alert-warning" role="alert">
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<strong>
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<i class="fa fa-exclamation-triangle" aria-hidden="true"></i>
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{{- if $isPast -}}
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This is a past event from {{ $e.year }}.
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{{- else -}}
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This is an older event from {{ $e.year }}.
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{{- end -}}
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</strong>
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Visit the <a href='{{ (printf "/events/%s/" $currentEvent.name) }}' class="alert-link"><strong>{{ $currentEvent.year }} event page</strong></a> for current information.
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</div>
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</div>
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</div>
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{{- end -}}
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{{- end -}}
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‎themes/devopsdays-theme/layouts/partials/functions/get-current-event-for-city.html‎

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{{- /*
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This function determines the "current" event for a given city/event_group.
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Input: Page context (.) - the function will get the current event data from the page.
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Returns: The event object for the current/most recent event, or empty dict if none found.
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Logic:
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- First preference: Latest future event (enddate > now) by startdate
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- Second preference: Latest event by year (from name) for events without dates
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- Third preference: Latest past event by startdate
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*/ -}}
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{{- $currentEvent := dict -}}
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{{- $e := partial "functions/get-event-data" . -}}
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{{- if and $e $e.city -}}
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{{- /* Determine matching criteria: use event_group if available, otherwise city */ -}}
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{{- $matchTitle := $e.city -}}
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{{- if $e.event_group -}}
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{{- $matchTitle = $e.event_group -}}
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{{- end -}}
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{{- /* Get all events with dates */ -}}
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{{- $allEvents := partial "functions/get-all-events" . -}}
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{{- /* Get all events without dates (TBD) */ -}}
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{{- $tbdEvents := partial "functions/get-tbd-events" . -}}
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{{- /* Combine both sets */ -}}
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{{- $allEventsIncludingTBD := $allEvents -}}
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{{- range $tbdEvents -}}
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{{- $allEventsIncludingTBD = $allEventsIncludingTBD | append . -}}
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{{- end -}}
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{{- /* Filter events matching this city/event_group, excluding the current event */ -}}
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{{- $futureEvents := slice -}}
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{{- $eventsWithoutDates := slice -}}
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{{- $pastEvents := slice -}}
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{{- range $allEventsIncludingTBD -}}
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{{- /* Skip if this is the event we're checking */ -}}
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{{- if and $e.name (ne .name $e.name) -}}
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{{- /* Check if event matches city or event_group (case-insensitive) */ -}}
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{{- $eventMatchTitle := .city -}}
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{{- if .event_group -}}
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{{- $eventMatchTitle = .event_group -}}
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{{- end -}}
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{{- if or (eq (lower .city) (lower $matchTitle)) (eq (lower $eventMatchTitle) (lower $matchTitle)) -}}
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{{- /* Event matches this city/event_group */ -}}
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{{- if and .startdate .enddate -}}
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{{- /* Separate into future and past events based on enddate */ -}}
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{{- if gt (time .enddate) now -}}
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{{- $futureEvents = $futureEvents | append . -}}
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{{- else -}}
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{{- $pastEvents = $pastEvents | append . -}}
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{{- end -}}
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{{- else -}}
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{{- /* Event without dates - store separately */ -}}
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{{- $eventsWithoutDates = $eventsWithoutDates | append . -}}
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{{- end -}}
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{{- end -}}
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{{- end -}}
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{{- end -}}
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{{- /* Determine current event with priority: latest year (future dates or TBD) > past */ -}}
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{{- $candidateEvent := dict -}}
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{{- /* Get the year of the event being viewed */ -}}
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{{- $viewingYear := 0 -}}
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{{- if $e.year -}}
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{{- $viewingYear = int $e.year -}}
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{{- else if $e.name -}}
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{{- $yearStr := index (split $e.name "-") 0 -}}
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{{- $viewingYear = int $yearStr -}}
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{{- end -}}
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{{- /* Find the latest year among all OTHER events (excluding the one being viewed) */ -}}
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{{- $latestYear := 0 -}}
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{{- range $futureEvents -}}
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{{- $eventYear := 0 -}}
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{{- if .year -}}
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{{- $eventYear = int .year -}}
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{{- end -}}
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{{- if and $eventYear (gt $eventYear $latestYear) -}}
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{{- $latestYear = $eventYear -}}
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{{- end -}}
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{{- end -}}
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{{- range $eventsWithoutDates -}}
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{{- $eventYear := 0 -}}
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{{- if .name -}}
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{{- $yearStr := index (split .name "-") 0 -}}
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{{- $eventYear = int $yearStr -}}
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{{- end -}}
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{{- if and $eventYear (gt $eventYear $latestYear) -}}
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{{- $latestYear = $eventYear -}}
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{{- end -}}
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{{- end -}}
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{{- /* Only return a current event if another event has a newer year than what we're viewing */ -}}
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{{- if and (gt $latestYear 0) (gt $latestYear $viewingYear) -}}
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{{- /* Find the event from the latest year - prefer future with dates, then TBD */ -}}
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{{- $futureFromLatestYear := dict -}}
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{{- $tbdFromLatestYear := dict -}}
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{{- /* Look for future events with dates from the latest year */ -}}
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{{- range $futureEvents -}}
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{{- $eventYear := 0 -}}
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{{- if .year -}}
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{{- $eventYear = int .year -}}
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{{- end -}}
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{{- if eq $eventYear $latestYear -}}
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{{- if or (not $futureFromLatestYear) (gt .startdate $futureFromLatestYear.startdate) -}}
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{{- $futureFromLatestYear = . -}}
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{{- end -}}
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{{- end -}}
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{{- end -}}
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{{- /* Look for TBD events from the latest year */ -}}
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{{- range $eventsWithoutDates -}}
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{{- $eventYear := 0 -}}
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{{- if .name -}}
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{{- $yearStr := index (split .name "-") 0 -}}
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{{- $eventYear = int $yearStr -}}
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{{- end -}}
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{{- if eq $eventYear $latestYear -}}
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{{- $tbdFromLatestYear = . -}}
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{{- end -}}
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{{- end -}}
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{{- /* Prefer future event with dates, fallback to TBD */ -}}
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{{- if $futureFromLatestYear -}}
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{{- $candidateEvent = $futureFromLatestYear -}}
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{{- else if $tbdFromLatestYear -}}
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{{- $candidateEvent = $tbdFromLatestYear -}}
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{{- end -}}
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{{- else if eq $latestYear 0 -}}
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{{- /* No future/TBD events found, check past events only if viewing year is not newer */ -}}
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{{- if gt (len $pastEvents) 0 -}}
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{{- $latestPastYear := 0 -}}
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{{- $latestPastEvent := dict -}}
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{{- range $pastEvents -}}
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{{- $eventYear := 0 -}}
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{{- if .year -}}
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{{- $eventYear = int .year -}}
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{{- end -}}
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{{- if and $eventYear (gt $eventYear $latestPastYear) -}}
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{{- $latestPastYear = $eventYear -}}
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{{- $latestPastEvent = . -}}
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{{- end -}}
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{{- end -}}
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{{- /* Only use past event if its year is newer than viewing year */ -}}
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{{- if and $latestPastEvent (gt $latestPastYear $viewingYear) -}}
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{{- $candidateEvent = $latestPastEvent -}}
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{{- end -}}
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{{- end -}}
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{{- end -}}
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{{- $currentEvent = $candidateEvent -}}
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{{- end -}}
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{{- return $currentEvent -}}
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‎themes/devopsdays-theme/layouts/partials/welcome.html‎

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{{- $e := partial "functions/get-event-data" . -}}
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{{- $.Scratch.Set "contentdir" (printf "static/events/%s/" $e.name) -}}
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{{- /* Display banner for non-current events */ -}}
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{{- partial "events/non-current-banner.html" . -}}
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{{- if $e.masthead_background -}}
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{{- if ne $e.masthead_background "" -}}
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{{- if (where (readDir "static/events") "Name" $e.name) -}}

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