added GameSystemID to LearnCost

backend/gsmaster/levelup.go

@@ -106,5 +106,8 @@ func CalculateImprovementCost(skill string, class string, currentSkillLevel int)
 	lCost.Stufe = currentSkillLevel + 1
 	lCost.Ep = neededLE * epPerTE
 	lCost.Money = lCost.Ep
+	gs := models.GetGameSystem(lCost.GameSystemId, lCost.GameSystem)
+	lCost.GameSystemId = gs.ID
+	lCost.GameSystem = gs.Name
 	return &lCost, nil
 }

backend/models/model_gsmaster.go

@@ -35,12 +35,14 @@ type LookupList struct {
 }
 
 type LearnCost struct {
-	Stufe int `json:"stufe"`
-	LE    int `json:"le"`
-	TE    int `json:"te"`
-	Ep    int `json:"ep"`
-	Money int `json:"money"`
-	PP    int `json:"pp"`
+	GameSystem   string `gorm:"column:game_system;index;default:midgard" json:"game_system"`
+	GameSystemId uint   `json:"game_system_id,omitempty"`
+	Stufe        int    `json:"stufe"`
+	LE           int    `json:"le"`
+	TE           int    `json:"te"`
+	Ep           int    `json:"ep"`
+	Money        int    `json:"money"`
+	PP           int    `json:"pp"`
 }
 
 type Skill struct {
@@ -452,6 +454,22 @@ func (object *Spell) BeforeSave(tx *gorm.DB) error {
 	return nil
 }
 
+func (object *LearnCost) ensureGameSystem() {
+	gs := GetGameSystem(object.GameSystemId, object.GameSystem)
+	object.GameSystemId = gs.ID
+	object.GameSystem = gs.Name
+}
+
+func (object *LearnCost) BeforeCreate(tx *gorm.DB) error {
+	object.ensureGameSystem()
+	return nil
+}
+
+func (object *LearnCost) BeforeSave(tx *gorm.DB) error {
+	object.ensureGameSystem()
+	return nil
+}
+
 func (object *Equipment) ensureGameSystem() {
 	gs := GetGameSystem(object.GameSystemId, object.GameSystem)
 	object.GameSystemId = gs.ID

backend/models/model_gsmaster_test.go

@@ -1800,12 +1800,14 @@ func TestGSMaster_EdgeCases(t *testing.T) {
 
 func TestLearnCost_StructFields(t *testing.T) {
 	learnCost := LearnCost{
-		Stufe: 3,
-		LE:    10,
-		TE:    5,
-		Ep:    100,
-		Money: 50,
-		PP:    2,
+		GameSystem:   "midgard",
+		GameSystemId: 1,
+		Stufe:        3,
+		LE:           10,
+		TE:           5,
+		Ep:           100,
+		Money:        50,
+		PP:           2,
 	}
 
 	assert.Equal(t, 3, learnCost.Stufe)
@@ -1816,6 +1818,29 @@ func TestLearnCost_StructFields(t *testing.T) {
 	assert.Equal(t, 2, learnCost.PP)
 }
 
+func TestLearnCost_EnsureGameSystem_DefaultsToMidgard(t *testing.T) {
+	setupGSMasterTestDB(t)
+
+	lc := LearnCost{}
+	lc.ensureGameSystem()
+
+	assert.Equal(t, "midgard", lc.GameSystem)
+	assert.NotZero(t, lc.GameSystemId)
+}
+
+func TestLearnCost_EnsureGameSystem_UsesProvidedGameSystem(t *testing.T) {
+	setupGSMasterTestDB(t)
+
+	gs := &GameSystem{Code: "TST-LC", Name: "Test LearnCost"}
+	require.NoError(t, database.DB.Create(gs).Error)
+
+	lc := LearnCost{GameSystemId: gs.ID}
+	lc.ensureGameSystem()
+
+	assert.Equal(t, gs.ID, lc.GameSystemId)
+	assert.Equal(t, gs.Name, lc.GameSystem)
+}
+
 // TestSkill_Create_DefaultImprovable verifies that new skills get Improvable=true by default
 func TestSkill_Create_DefaultImprovable(t *testing.T) {
 	database.SetupTestDB(true)