From da6de4ce90065927b0adc0db34145c8754c253cc Mon Sep 17 00:00:00 2001
From: Mathew Tonkin Henwood <7479946+mathewTH@users.noreply.github.com>
Date: Thu, 5 Jan 2023 18:06:39 +1300
Subject: [PATCH 1/2] Add FieldNameTag config

Allows field names to be based on a different tag.
Json is still the default tag so this is not a breaking change.
https://github.com/invopop/jsonschema/discussions/28#discussioncomment-4387240
---
 reflect.go | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/reflect.go b/reflect.go
index 6ebc6be..399c2ff 100644
--- a/reflect.go
+++ b/reflect.go
@@ -183,6 +183,9 @@ type Reflector struct {
 	// root as opposed to a definition with a reference.
 	ExpandedStruct bool
 
+	// FieldNameTag will change the tag used to get field names. json tags are used by default.
+	FieldNameTag string
+
 	// IgnoredTypes defines a slice of types that should be ignored in the schema,
 	// switching to just allowing additional properties instead.
 	IgnoredTypes []interface{}
@@ -989,7 +992,11 @@ func ignoredByJSONSchemaTags(tags []string) bool {
 }
 
 func (r *Reflector) reflectFieldName(f reflect.StructField) (string, bool, bool, bool) {
-	jsonTagString, _ := f.Tag.Lookup("json")
+	tagKey := r.FieldNameTag
+	if tagKey == "" {
+		tagKey = "json"
+	}
+	jsonTagString := f.Tag.Get(tagKey)
 	jsonTags := strings.Split(jsonTagString, ",")
 
 	if ignoredByJSONTags(jsonTags) {

From 7f2e6ffc7310bf17be38d1046538da52f8b5fb7d Mon Sep 17 00:00:00 2001
From: Balakrishnan Balasubramanian <git.user@balki.me>
Date: Tue, 18 Apr 2023 16:55:37 -0400
Subject: [PATCH 2/2] Add test for FieldNameTag

---
 fixtures/test_config.json | 23 +++++++++++++++++++++++
 reflect_test.go           | 12 ++++++++++++
 2 files changed, 35 insertions(+)
 create mode 100644 fixtures/test_config.json

diff --git a/fixtures/test_config.json b/fixtures/test_config.json
new file mode 100644
index 0000000..97149b8
--- /dev/null
+++ b/fixtures/test_config.json
@@ -0,0 +1,23 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://github.com/invopop/jsonschema/config",
+  "$ref": "#/$defs/Config",
+  "$defs": {
+    "Config": {
+      "properties": {
+        "name": {
+          "type": "string"
+        },
+        "count": {
+          "type": "integer"
+        }
+      },
+      "additionalProperties": false,
+      "type": "object",
+      "required": [
+        "name",
+        "count"
+      ]
+    }
+  }
+}
diff --git a/reflect_test.go b/reflect_test.go
index c0d2c9f..566a965 100644
--- a/reflect_test.go
+++ b/reflect_test.go
@@ -545,3 +545,15 @@ func TestArrayFormat(t *testing.T) {
 	pt := p.Items.Format
 	require.Equal(t, pt, "uri")
 }
+
+func TestFieldNameTag(t *testing.T) {
+	type Config struct {
+		Name  string `yaml:"name"`
+		Count int    `yaml:"count"`
+	}
+
+	r := Reflector{
+		FieldNameTag: "yaml",
+	}
+	compareSchemaOutput(t, "fixtures/test_config.json", &r, &Config{})
+}