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docs($http): explain why $http may not make the request immediately

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I came across this issue today and after researching has found out this thread on so:
http://stackoverflow.com/questions/17039998/angular-not-making-http-requests-immediately.

It took me quite sometimes to figure out this so I hope the addition in documentation could save somebody else some times and frustration.
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Dang Nguyen Anh Khoa 2013-09-13 18:36:27 +08:00 committed by Pete Bacon Darwin
parent 9ef5d8f318
commit 16c7ab1ba0
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src/ng/http.js
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@ -185,6 +185,10 @@ function $HttpProvider() {
* will result in the success callback being called. Note that if the response is a redirect,
* XMLHttpRequest will transparently follow it, meaning that the error callback will not be
* called for such responses.
*
* If your $http is scheduled from something that doesn't cause a $digest to fire then your
* request won't be sent immediately. To make sure a $http request if fired immediately, wrap your
* call around with an $scope.$apply(function(){ //make $http request here }
*
* # Shortcut methods
*