I'm trying to write an autocomplete directive that fetches data from the server using an $http request (without using any external plugins or scripts). Currently it works only with static data. Now, I know that I need to insert my $http request into the source:
of the directive, but I can't find any good documentation on the subject.
$http.post($scope.url, { "command": "list category() names"}). success(function(data, status) { $scope.status = status; $scope.names = data; }) . error(function(data, status) { $scope.data = data || "Request failed"; $scope.status = status; });
app.directive('autoComplete', function($timeout) { return function(scope, iElement, iAttrs) { iElement.autocomplete({ source: scope[iAttrs.uiItems], select: function() { $timeout(function() { iElement.trigger('input'); }, 0); } }); }; });
<input auto-complete ui-items="names" ng-init="manualcat='no category entered'" ng-model="manualcat">
So, how do I piece this all together correctly the Angular way?
Start by creating the autocomplete panel and the options displayed inside it. Each option should be defined by a mat-option tag. Set each option's value property to whatever you'd like the value of the text input to be when that option is selected.
The md-autocomplete, an Angular Directive, is used as a special input control with an inbuilt dropdown to show all possible matches to a custom query. This control acts as a real-time suggestion box as soon as the user types in the input area.
I made an autocomplete directive and uploaded it to GitHub. It should also be able to handle data from an HTTP-Request.
Here's the demo: http://justgoscha.github.io/allmighty-autocomplete/ And here the documentation and repository: https://github.com/JustGoscha/allmighty-autocomplete
So basically you have to return a promise
when you want to get data from an HTTP request, that gets resolved when the data is loaded. Therefore you have to inject the $q
service/directive/controller where you issue your HTTP Request.
Example:
function getMyHttpData(){ var deferred = $q.defer(); $http.jsonp(request).success(function(data){ // the promise gets resolved with the data from HTTP deferred.resolve(data); }); // return the promise return deferred.promise; }
I hope this helps.
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