Is it possible to inject a service inside another service and vice versa at the same time?

Question

I have a real scenario in a real project where I need 2 services to access the properties and/or methods of each other. I\'m not an Angular expert so is it possible?

Answer 1

AngularJS does not allow injection of circular dependencies.

Miško Hevery, one of the authors of AngularJS, recommends finding the common elements:

+---------+      +---------+
|    A    |<-----|  B      |
|         |      |  |  +-+ |
|         |      |  +->|C| |
|         |------+---->| | |
|         |      |     +-+ |
+---------+      +---------+

And extracting it to a third service:

                         +---------+
+---------+              |    B    |
|    A    |<-------------|         |
|         |              |         |
|         |    +---+     |         |
|         |--->| C |<----|         |
|         |    +---+     +---------+
+---------+

For more information, see Circular Dependency in constructors and Dependency Injection by Miško Hevery.