From 076807d78d7e26425229805083733cbb2f9b7693 Mon Sep 17 00:00:00 2001
From: jano3 <jano@uafrica.com>
Date: Mon, 15 Nov 2021 15:40:41 +0200
Subject: [PATCH] added a json unmarshaling function
---
struct_utils/json.go | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
create mode 100644 struct_utils/json.go
diff --git a/struct_utils/json.go b/struct_utils/json.go
new file mode 100644
index 0000000..ee887f5
--- /dev/null
+++ b/struct_utils/json.go
@@ -0,0 +1,20 @@
+package struct_utils
+
+import (
+ "encoding/json"
+ "fmt"
+)
+
+// UnmarshalJSON performs a JSON unmarshalling, but on type mismatches it returns a more user friendly error.
+// Used exactly the same as json.Unmarshal
+func UnmarshalJSON(data []byte, val interface{}) error {
+ err := json.Unmarshal(data, &val)
+ if err != nil {
+ typeErr, ok := err.(*json.UnmarshalTypeError)
+ if ok {
+ return fmt.Errorf("invalid type received for field '%s': expected a value of type '%s', but received type '%s'", typeErr.Field, typeErr.Type.Name(), typeErr.Value)
+ }
+ }
+
+ return err
+}
--
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