angular - How to get flat observable list from 2 level down keyed list in AngularFire2 -

i can't figure out how flat collection of products i've managed data in form prods/$companykeys/$prodkeys

{   "id1" : {     "prodid1" : {       "name" : "car"     },     "prodid2" : {       "name" : "door"     },     "prodid3" : {       "name" : "sandwich"     }   },   "id2" : {     "prodid4" : {       "name" : "glass"     },     "prodid5" : {       "name" : "pen"     }   } } 

is there simple way in rxjs or in angularfire2 directly collection of products, omitting company ids? or have re-arrange data?

thanks

observable.flatmap made such purpose (fiddle):

// turn products array var arr = []; for(var key in products) {   arr.push(products[key]); }  rx.observable.from(arr)   .flatmap(x => {     // 'x' object id1, create array of products     var arr = [];     (var key in x) {       arr.push(x[key]);     }     return rx.observable.from(arr);   })   .subscribe(x => document.write(json.stringify(x) + '</br>')); 

output:

{"name":"car"} {"name":"door"} {"name":"glass"} {"name":"sandwich"} {"name":"pen"} 

not sure how want handle keys, can use observable.pairs make easier loop through object properties. resulting stream of arrays first element being key , second being value object properties:

rx.observable.pairs(products)     .flatmap(x => rx.observable.pairs(x[1]))     .subscribe( x => console.log(x[0], x[1])); 

this returns arrays this:

["prodid1", {name: "car"}] ["prodid2", {name: "door"}] ["prodid3", {name: "glass"}] ["prodid4", {name: "sandwich"}] ["prodid5", {name: "pen"}]