Appending to core entity relationships

[alasdaircr]

I'm creating a little extension for list management / campaign tracking. It's very simple and is just a way of recording who is linked to each list, and what was sent to each list.

I have two entities: TargetList and Campaign.

Is it possible for an extension to append it's own entity onto the core entity definition in order to add extra functionality like this as extensions?

I want to have a many-to-many relationship between Contacts & TargetLists

Like this, but valid JSON

{
    "links": ["__APPEND__",
        targetlists: {
            type: hasMany,
            entity: TargetList,
            foreign: targets
        }
    ]
} 

[yuri]

Hi

You have confused me. Links is not an array. You don't need to append.

[alasdaircr]

Ok, so just having this will add this link to the others for contact ?

{
    "links": {
        targetlists: {
            type: hasMany,
            entity: TargetList,
            foreign: targets
        }
    }
} 

[alasdaircr]

I presumed it would overwrite the existing links for Contact defined in core software. The example code above is for an extension.

[yuri]

Sure. json is merged recursively.

[alasdaircr]

Amazing - I hadn't realised that!