Break up go project into subfolders

Question

I want to break my project up to subfolders.

I want this code structure:

├── main.go
└── models
    └── user.go

Where main.go is:

Answer 1

Your import should be an absolute one:

import "github.com/abonec/go_import_problem/models"

If you don't want to export your project to an external referential, you can do a:

import "go_import_problem/models"

(That is: "the name of your project folder accessible by GOPATH/your package")

See "How to use custom packages in golang?".

And you would use:

models.User

As mentioned in Effective Go:

The importer of a package will use the name to refer to its contents, so exported names in the package can use that fact to avoid stutter.
(Don't use the import . notation, which can simplify tests that must run outside the package they are testing, but should otherwise be avoided.)

---

kostix adds in the comments:

to reiterate, names of Go packages are always absolute (that is, there's no relative package names, neither with ./ nor with ../ or anything like that) but that names are "anchored" to one of the so-called workspaces listed in $GOPATH.

When Go searches for a package, it looks through workspaces and tries to find a package in each of them, in order.
The search is not recursive.
And no, there's no requirement to encode URLs in package paths -- unless you want to make your package public.