从单独的文件夹加载模型时，如何解决“不允许导入周期”

I'm going to modularize my project, but I have some problems.

Normally, I will put all model files into the same package models (same folder, about 30 files), but now I want to put them into separate folders to manage them easier (each module will have their own model folder).

But if I try to put the model in separate folders like in this image, I will get "import cycle error" because they are not the same package (two tables will be used to lookup each other, this is where error happens).

https://i.imgur.com/3wqJ4BK.png

So is there anyway to put models in separate folders or better ways to manage models?

I'm not sure that this is a good strategy or not. But If I were in your situation I would try to solve it by following approach.

Let's consider we have two packages package a and package b.

package a

import ".../code/module2"

var StrA="Hi! I'm A and I'm calling B: "

func FuncA() string {
    return "Inside A"
}

func AtoB()  {
    fmt.Println(StrA+b.FuncB())
}

package b

import ".../code/module1"

var StrB="Hi! I'm B and I'm calling A: "

func FuncB()  string {
    return "Inside B"
}

func BtoA()  {
    fmt.Println(StrB+a.FuncA())
}

You cannot use function AtoB() or BtoA() because it will make a loop. One possible way you can solve it by making sub-directory inside each module. Move those part of the code that makes loop. Like here AtoB() and BtoA().

Inside extraA.go:

package extended

import (
    "fmt"
    . ".../code/module1"
    b ".../code/module2"
)
func AtoB()  {
    fmt.Println(StrA+b.FuncB())
}

I imported package a using . so that I can use a's object locally and imported package b to call FuncB(). I also move the BtoA() to another sub-directory inside module2.

Now I can use both function without making any loop.

package main

import (
    extraA ".../code/module1/extended"
    extraB ".../code/module2/extended"
)

func main()  {
    extraA.AtoB()
    extraB.BtoA()
}

Output:

Hi! I'm A and I'm calling B: Inside B
Hi! I'm B and I'm calling A: Inside A