feature(collection): Add Collection.extendDomain()

[andreialecu]

Static function that allows adding values or functions to the domains of all collection instances.

Replaces #315

[andreialecu]

You have access to this.collection and this.domain from inside any extensions defined using this method.

Usage example:

app.js

varCollection=require('deployd/lib/resources/collection');vardeployd=require('deployd');Collection.extendDomain("getColName",function(){returnthis.collection.name;});Collection.extendDomain("hasChanges",function(){vardomain=this.domain;if(_.find(_.keys(domain.data),function(key){returndomain.changed(key);})){returntrue;}returnfalse;});// configure database etc.varserver=deployd({port: process.env.PORT||1337,env: process.env.ENV||'development',db: {connectionString: process.env.MONGO_URI}});// start the serverserver.listen();// debugserver.on('listening',function(){console.log("Server is listening on port: "+(process.env.PORT||1337));});// Deployd requires thisserver.on('error',function(err){console.error(err);process.nextTick(function(){// Give the server a chance to return an errorprocess.exit();});});

You can then use those defined functions in your event scripts, example:

On POST

emit(getColName()+":post",this);

[ericfong]

WOW. Great Feature!!!
But seems need to wait for 592 being rebased first?

[andreialecu]

Yeah, it has a bit of dependency on #592. I can decouple if needed, but I also have another PR I need to send after these three which is related to AfterCommit as well.

So let's merge #592 first, that's easier.

[ericfong]

Thanks for your contribution!
Landed as 450b8ad