fix(transformer): Allow camel-cased json tags (#828)

Follow-up for #820

Author: candiduslynx

transformers/struct.go

@@ -363,8 +363,8 @@ func DefaultNameTransformer(field reflect.StructField) (string, error) {
 		if jsonTag == "-" {
 			return "", nil
 		}
-		if schema.ValidColumnName(jsonTag) {
-			name = jsonTag
+		if nameFromJSONTag := defaultCaser.ToSnake(jsonTag); schema.ValidColumnName(nameFromJSONTag) {
+			return nameFromJSONTag, nil
 		}
 	}
 	return defaultCaser.ToSnake(name), nil

transformers/struct_test.go

@@ -68,7 +68,8 @@ type (
 	}
 
 	testFunnyStruct struct {
-		AFunnyLookingField string `json:"OS-EXT:a-funny-looking-field"`
+		AFunnyLookingField      string `json:"OS-EXT:a-funny-looking-field"`
+		AFieldWithCamelCaseName string `json:"camelCaseName"`
 	}
 )
 
@@ -255,6 +256,10 @@ var (
 				Name: "a_funny_looking_field",
 				Type: schema.TypeString,
 			},
+			{
+				Name: "camel_case_name",
+				Type: schema.TypeString,
+			},
 		},
 	}
 )