tweak tags and add story repository.

models/story.go

@@ -18,9 +18,36 @@ type Story struct {
 	SortByFictionalDate bool          `bson:"sortByFictionalDate"`
 }
 
+func (story *Story) ApplyUpdate(update StoryUpdate) {
+	if update.Name != nil {
+		story.Name = *update.Name
+	}
+	if update.Category != nil {
+		story.Category = *update.Category
+	}
+	if update.Author != nil {
+		story.Author = *update.Author
+	}
+	if update.Open != nil {
+		story.Open = *update.Open
+	}
+	if update.Listed != nil {
+		story.Listed = *update.Listed
+	}
+	if update.SortByFictionalDate != nil {
+		story.SortByFictionalDate = *update.SortByFictionalDate
+	}
+	if update.FictionalDate != nil {
+		story.FictionalDate = *update.FictionalDate
+	}
+	if update.UpdatedDate != nil {
+		story.UpdatedDate = *update.UpdatedDate
+	}
+}
+
 // IsChangeObject is an interface implementation to identify it as a valid
 // ChangeObject in GQL.
-func (*Story) IsChangeObject() {
+func (_ *Story) IsChangeObject() {
 	panic("this method is a dummy, and so is its caller")
 }