javascript - AngularJS promises, how to $q.first.then(others[]) -


in angularjs controller need ensure paramount variable initialized before performing other tasks.

var firstpromise = $scope.watch("myparamount"...); // ng-init var otherpromises = []; // once obtained myparamount, others  // this?! $q.firstpromise.then.all(otherpromises).then(function(){     console.log("first, otherpromises completed!"); })

how fix "fake" code?

assuming actual promises, should able use promise chaining this.

here's sample using timeouts illustrative purposes: 

var firstpromise = $timeout(echo('first'), 1000);  firstpromise.then(function(data){     console.log(data); // 'first'     return $q.all([  // other promises         $timeout(echo('other 1'), 1000),         $timeout(echo('other 2'), 500),         $timeout(echo('other 3'), 1500)     ]);; }).then(function(data){     console.log(data); // ['other 1', 'other 2', 'other 3'] });  function echo(v) { return function(){ return v; } }

that 1 way chain them, other promises isn't run until first has resolved.


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