Effortlessly locating a specific item within a JSON file with the help of AngularJS and lodash's .find() method

This is the main controller for handling event maps.

.controller('EventMapCtrl', function($scope, $stateParams, Events) {
    var vm = this;
    vm.EventId = Number($stateParams.id);
    Events.getEvents.then(function(data) {
        vm.event = _.find(data, {id: vm.EventId});
        console.log(vm.event);
    });

    $scope.vm = vm;
});

This is the Events service that retrieves event data from the API.

.service('Events', function(mApi, mDomain) {
    return {
        getEvents: mApi.getData('/events/')
    }
});

Currently, I am able to fetch all events using an HTTP call. However, in the controller, my goal is to filter and display only one event with an ID matching vm.EventId. At the moment, I encounter an undefined error when trying to log vm.event. Any assistance would be greatly appreciated. My knowledge of Angular is relatively new, and I'm unsure if my use of .find() is correct.

Answer №1

Feel free to implement the use of in this scenario - alternatively, we can opt for an AngularJS Filter. Take a look at the simplified example below. You can tailor it to fit your specific requirements...

// utilize $filter
var items = [{'id': 1}, {'id': 2}, {'id': 3}];

var located = $filter('filter')(items, { id: 2 }, true); // { 'id', 2 }

JSFiddle Link - view demo

Answer №2

Resolved the issue. I implemented a new route on the server side that allowed me to make an http call with an appended id. Additionally, I utilized a different service for this task. Below is the code snippet for the new service.

.service('Event', function(mApi,mDomain){
    var getEventData = function(id){
      return mApi.getData('/event/'+id);
    };
    return {
      getEventData: getEventData
    };
  })

The following is the updated controller where I incorporated specific attributes for the map view, making it appear quite distinct from my previous solution.

.controller('EventMapCtrl', function($scope, $stateParams, Event) {
    var vm = this;
    Event.getEventData($stateParams.id).then(function (res) {
      vm.eventData = res.data;
      vm.map = {
        center: {
          latitude: vm.eventData.location.latitude,
          longitude: vm.eventData.location.longitude
        },
        zoom: 17
      };
      vm.marker = {
        id: 1,
        latitude: vm.eventData.location.latitude,
        longitude: vm.eventData.location.longitude,
        title: vm.eventData.location.name
      }
    });
    vm.locationClicked = function (marker) {
      window.location = "geo:" + marker.latitude + "," + marker.longitude + ";u=35";
    };
    $scope.vm = vm;
  })

This particular line of code was the main focus of my modifications.

Event.getEventData($stateParams.id).then(function (res) {
          vm.eventData = res.data;

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