Tips on specifying a default value when receiving data from an API

I am working with a dropdown list that is populated from an API call. Here is my code snippet:

<label>User Code:</label>
<select ng-options="c as c.User for c in userList"
    ng-model="selectedUser" id="search3">
</select>

To fetch the data for the dropdown, I have created a directive function as follows:

scope.getAllUsers = function(){
    scope.userList = [];
    ApiServices.getAllUsers().then(function (response) {
        scope.userList = response.data;
    });
}

scope.getAllUsers();

Now, I want to pre-select a user with the User Code: SS1234 when the page loads. I am considering using the selected attribute but unsure how to apply it to the fetched data.

Answer №1

function retrieveAllFrequencies(){
  userList = [];
  CallApiToRetrieveFrequencies().then(function (response) {
       userList = response.data;
       selectedUser = "SS1234";
   });
}
retrieveAllFrequencies();

Answer №2

Just assign a user by using the code scope.selectedUser="SS1234".

scope.userList = response.data;
scope.selectedUser = scope.userList[0].User /* I have selected the user at index 0. Feel free to change this as needed */

Answer №3

To set the default value of the ng-model, you can utilize either ng-init or ng-value.

<select ng-options="c as c.User for c in userList" ng-model="selectedUser" 
 id="search3" ng-value={{selectedUser = 'SS1234'}}></select>

//or

<select ng-options="c as c.User for c in userList" ng-model="selectedUser" 
 id="search3" ng-init="selectedUser = 'SS1234'"></select>

Answer №4

To implement this functionality, make sure to include the following in your controller:

$scope.currentUser = 'JS4321';

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