This library allows you to work with services in Revel framework. This is a simple implementation of a dependency injection container, hope you'll like it. Extra simple stuff, just a map that you can fill with your own Structs. In facts, this library isn't Revel exclusive, it would work on any go project
go get github.com/zebigduck/reveldi
To use it, you need to create a new controller
// app/controllers/dic.go
package controllers
import "github.com/revel/revel"
import "github.com/zebigduck/reveldi"
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mport "app/app/modules/message"
type Dic struct {
container *reveldi.Container
}
func (c *Dic) Init() {
c.container = new(reveldi.Container)
// Example : Messenger service
// Register a simple instanciated Struct as a service
// c.Container.Register("messenger", new(message.Messenger)) // Hi Jérémy!
// You can easily change the Struct to use
// c.Container.Register("messenger", new(message.SuperMessenger)) // super Hi Jérémy!
// Create instance and configure service
messenger := new(message.PrefixMessenger)
// messenger.SetPrefix("Hi")
// Or use config.conf parameter
messenger.SetPrefix(revel.Config.StringDefault("messenger.prefix", "Hey"))
// Then register the Service to the container
c.container.Register("messenger", messenger)
// Now you can use it as follow anywhere in your controllers
// myMessenger := Container.Get("messenger").(message.MessengerInterface)
}
// This is a shortcut to Get Container's func
func (c *Dic) Get(name string) reveldi.Service {
return c.container.Get(name)
}And then, you just have to create global variable and init Dic in init.go
package controllers
import (
"github.com/revel/revel"
)
// Create the Container global variable
var Container *Dic = new(Dic)
func init() {
// Init the container with your services
revel.OnAppStart(func () { Container.Init() })
}Now, you're able to abstract your managers, just use them with the following instruction in your controllers:
myMessenger := Container.Get("messenger").(message.MessengerInterface)
You can take a look to a working sample here