Custom Editor Views

You aren't limited in using the built-in field editor views (like checkbox, date, datetime, ...) but you can easily plug in your own custom ones.

It's just a matter of pointing the UIOMaticField attribute to the view location

 [UIOMaticField(Name = "Owner", Description = "Select the owner of the dog", View = "~/App_Plugins/Example/picker.person.html")]

API Controller

[PluginController("Example")]
public class ExampleApiController: UmbracoAuthorizedJsonController
{
    public IEnumerable<dynamic> GetAll()
    {
        var query = new Sql().Select("*").From("People");
        return DatabaseContext.Database.Fetch<dynamic>(query);
    }
}

AngularJS View

<div ng-controller="Example.Picker.Person">
    <select 
        ng-model="property.value" 
        ng-options='person.Id as (person.FirstName + " " + person.LastName) for person in persons'>
        <option value="">---Please select---</option>
    </select><br>
</div>

AngularJS Controller

angular.module("umbraco").controller("Example.Picker.Person",
    function ($scope,$http) {

        $http.get("backoffice/Example/ExampleApi/GetAll").then(function(response) {
        $scope.persons = response.data;
    });
});

Package Manifest

{
    javascript: [
    '~/App_Plugins/Example/picker.person.controller.js',
    ]
}

Thoughts

As you see this is very similar to creating custom Umbraco property editors, the main difference is that we'll be working with the property.value object (and not model.value)