From e72084feadd5aabbcd24adf59ee85d2aa23f8392 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miguel=20=C3=81ngel=20Cabrera=20Mi=C3=B1agorri?=
 <macabrera@bitnami.com>
Date: Wed, 21 Aug 2019 16:37:48 +0200
Subject: [PATCH] [stable/mediawiki] Refactor StorageClass template to support
 old Helm versions (#16486)

Signed-off-by: miguelaeh <macabrera@bitnami.com>
---
 stable/mediawiki/Chart.yaml             |  2 +-
 stable/mediawiki/templates/_helpers.tpl | 35 ++++++++++++++++++-------
 2 files changed, 26 insertions(+), 11 deletions(-)

diff --git a/stable/mediawiki/Chart.yaml b/stable/mediawiki/Chart.yaml
index 5de67180ee..c83804bfc3 100644
--- a/stable/mediawiki/Chart.yaml
+++ b/stable/mediawiki/Chart.yaml
@@ -1,6 +1,6 @@
 apiVersion: v1
 name: mediawiki
-version: 8.1.0
+version: 8.1.1
 appVersion: 1.33.0
 description: Extremely powerful, scalable software and a feature-rich wiki implementation that uses PHP to process and display data stored in a database.
 home: http://www.mediawiki.org/
diff --git a/stable/mediawiki/templates/_helpers.tpl b/stable/mediawiki/templates/_helpers.tpl
index f83c43c9d6..4f18c35257 100644
--- a/stable/mediawiki/templates/_helpers.tpl
+++ b/stable/mediawiki/templates/_helpers.tpl
@@ -123,18 +123,33 @@ imagePullSecrets:
 Return  the proper Storage Class
 */}}
 {{- define "mediawiki.storageClass" -}}
-{{- $storageClass := "" }}
-{{- if .Values.persistence.storageClass -}}
-    {{- $storageClass = .Values.persistence.storageClass -}}
-{{- end -}}
+{{/*
+Helm 2.11 supports the assignment of a value to a variable defined in a different scope,
+but Helm 2.9 and 2.10 does not support it, so we need to implement this if-else logic.
+*/}}
 {{- if .Values.global -}}
     {{- if .Values.global.storageClass -}}
-        {{- $storageClass = .Values.global.storageClass -}}
+        {{- if (eq "-" .Values.global.storageClass) -}}
+            {{- printf "\"\"" -}}
+        {{- else }}
+            {{- printf "%s" .Values.global.storageClass -}}
+        {{- end -}}
+    {{- else -}}
+        {{- if .Values.persistence.storageClass -}}
+              {{- if (eq "-" .Values.persistence.storageClass) -}}
+                  {{- printf "\"\"" -}}
+              {{- else }}
+                  {{- printf "%s" .Values.persistence.storageClass -}}
+              {{- end -}}
+        {{- end -}}
+    {{- end -}}
+{{- else -}}
+    {{- if .Values.persistence.storageClass -}}
+        {{- if (eq "-" .Values.persistence.storageClass) -}}
+            {{- printf "\"\"" -}}
+        {{- else }}
+            {{- printf "%s" .Values.persistence.storageClass -}}
+        {{- end -}}
     {{- end -}}
 {{- end -}}
-{{- if (eq "-" $storageClass) -}}
-    {{- printf "\"\"" -}}
-{{- else }}
-    {{- printf "%s" $storageClass -}}
-{{- end -}}
 {{- end -}}