Using package main for all files, still says undefined

I have 3 files currently, they all have package main at the top.

GOPATH/src/example.com/myweb/main.go
GOPATH/src/example.com/myweb/api.go
GOPATH/src/example.com/myweb/viewmodels/home.go

When I compile I get the error:

./main.go:21: undefined: Home
./main.go:39: api.Home undefined (type API has no field or method Home)

I am compiling using:

go build

If I do this:

go build main.go api.go viewmodels/home.go

It says no such file or directory and then a path to a file that doesnt' exist:

GOPATH/src/example.com/myweb/viewmodels.main.go

If I am using package main, should this just work with go build ?

You cannot mix two different packages in one directory. Each directory is its own package.

The go documentation (see: golang.org/doc/code.html) states the following about packages that is relevant to your situation:

> - Each package consists of one or more Go source files in a single directory.
> - The path to a package's directory determines its import path.

The solution to your problem is:

1. Use package viewmodels for $GOPATH/src/example.com/myweb/viewmodels/home.go
2. Use package main for $GOPATH/src/example.com/myweb/main.go and $GOPATH/src/example.com/myweb/api.go
3. Add import "example.com/myweb/viewmodels" to the files using the viewmodels package (e.g. main.go, api.go)

Your project would look something like this: