add PartyFunc and gofmt -s -w . 🔷

Former-commit-id: a3809498a45140d691f3f235ad9cb25239d495a2

core/router/api_builder.go

@@ -215,6 +215,28 @@ func (rb *APIBuilder) Party(relativePath string, handlers ...context.Handler) Pa
 	}
 }
 
+// PartyFunc same as `Party`, groups routes that share a base path or/and same handlers.
+// However this function accepts a function that receives this created Party instead.
+// Returns the Party in order the caller to be able to use this created Party to continue the
+// top-bottom routes "tree".
+//
+// Note: `iris#Party` and `core/router#Party` describes the exactly same interface.
+//
+// Usage:
+// app.PartyFunc("/users", func(u iris.Party){
+//	u.Use(authMiddleware, logMiddleware)
+//	u.Get("/", getAllUsers)
+//	u.Post("/", createOrUpdateUser)
+//	u.Delete("/", deleteUser)
+// })
+//
+// Look `Party` for more.
+func (rb *APIBuilder) PartyFunc(relativePath string, partyBuilderFunc func(p Party)) Party {
+	p := rb.Party(relativePath)
+	partyBuilderFunc(p)
+	return p
+}
+
 // Subdomain returns a new party which is responsible to register routes to
 // this specific "subdomain".
 //