add qr code converter in substitutions

models/redner_substitution.py

@@ -30,6 +30,8 @@
 MAIL_TEMPLATE_DESERIALIZE = "mail_template+deserialize"
 IMAGE_FILE = "image-file"
 IMAGE_DATAURL = "image-data-url"
+QR_CODE_FILE = "qr-code-file"
+QR_CODE_DATAURL = "qr-code-data-url"
 RELATION_2MANY = "relation-to-many"
 RELATION_PATH = "relation-path"
 
@@ -39,6 +41,8 @@
     (FIELD, "Field"),
     (IMAGE_FILE, "Image file"),
     (IMAGE_DATAURL, "Image data url"),
+    (QR_CODE_FILE, "QR Code file"),
+    (QR_CODE_DATAURL, "QR Code data url"),
     (RELATION_2MANY, "Relation to many"),
     (RELATION_PATH, "Relation Path"),
     (CONSTANT, "Constant value"),
@@ -165,6 +169,10 @@
                     conv = converter.relation(path.replace(".", "/"), conv)
             elif sub.converter == IMAGE_DATAURL:
                 conv = converter.ImageDataURL(sub.value)
+            elif sub.converter == QR_CODE_FILE:
+                conv = converter.QRCodeFile(sub.value)
+            elif sub.converter == QR_CODE_DATAURL:
+                conv = converter.QRCodeDataURL(sub.value)
             elif sub.converter == RELATION_2MANY:
                 # Unpack the result of finding a field with its sort order into
                 # variable names.