No default value for POSTGRES_HOST and storageClass

templates/deployment.yaml

@@ -25,7 +25,7 @@ spec:
         - name: {{ .Chart.Name }}
           securityContext:
             {{- toYaml .Values.securityContext | nindent 12 }}
-          image: "{{ .Values.image.repository }}:{{ .Chart.AppVersion }}"
+          image: "{{ .Values.image.repository }}:{{ default .Chart.AppVersion .Values.image.version }}"
           imagePullPolicy: {{ .Values.image.pullPolicy }}
           env:
           - name: POSTGRES_PASSWORD

templates/django-files.yaml

@@ -10,4 +10,6 @@ spec:
   resources:
     requests:
       storage: {{ .Values.persistence.size }}
-  storageClassName: {{ .Values.persistence.storageClass | default "default" }}
+  {{- if .Values.persistence.storageClass }}
+  storageClassName: {{ .Values.persistence.storageClass }}
+  {{- end }}

templates/postgres-config.yaml

@@ -5,4 +5,6 @@ metadata:
 data:
   POSTGRES_DATABASE: {{ .Values.global.postgresql.postgresqlDatabase }}
   POSTGRES_USER: {{ .Values.global.postgresql.postgresqlUsername }}
-  POSTGRES_HOST: {{ .Values.global.postgresql.postgresqlHost | default "postgresql"}}
+  {{-if .Values.global.postgresql.postgresqlHost }}
+  POSTGRES_HOST: {{ .Values.global.postgresql.postgresqlHost }}
+  {{-end }}