beego models registered but not found

I'm trying to write my first beego web app and I'm trying to register some models, i register them in models/model.go's init() function, but when I run the command bee run, I get the following error:
no Model found, need register your model

main.go:

package main
import (
   "fmt"
	_ "test_blog/routers"
   "time"

   _ "github.com/lib/pq"

   "github.com/astaxie/beego"
   "github.com/astaxie/beego/orm"
)

func init() {
    orm.RegisterDriver("postgres", orm.DRPostgres)

    maxIdle := 30
	maxConn := 30
    orm.RegisterDataBase(
        "default",
        "postgres", 
        "postgres://user:password@localhost/test_db", maxIdle, maxConn
    )

    orm.DefaultTimeLoc = time.UTC
}

func main() {
    // Database alias.
	name := "default"

	// Drop table and re-create.
	force := false

    // Print log.
	verbose := false

	// Error.
	err := orm.RunSyncdb(name, force, verbose)
	if err != nil {
		fmt.Println(err)
	}

    beego.Run()
}

Note: force & verbose both were set to true before running bee run for the first time.

models.go:

package main

import "github.com/astaxie/beego/orm"

type User struct {
    Name  string
    Posts []*Post `orm:"reverse(many)"`
}

type Post struct {
	Title   string    `orm:"size(50)"`
	Text    string    `orm:"size(4000)"`
    Created time.Time `orm:"auto_now_add;type(datetime)"`
	Updated time.Time `orm:"auto_now;type(datetime)"`
    Author  *User     `orm:"rel(fk)"`
}

func init() {
    orm.RegisterModel(new(User), new(Post))
}

try this:

1. in models.go, change package main to package models
2. in main.go, add import _ "test_blog/models"