portainer/app/services/api/teamMembershipService.js

angular.module('portainer.services')
.factory('TeamMembershipService', ['$q', 'TeamMemberships', function TeamMembershipFactory($q, TeamMemberships) {
  'use strict';
  var service = {};

  service.memberships = function() {
    var deferred = $q.defer();
    TeamMemberships.query().$promise
    .then(function success(data) {
      var memberships = data.map(function (item) {
        return new TeamMembershipModel(item);
      });
      deferred.resolve(memberships);
    })
    .catch(function error(err) {
      deferred.reject({msg: 'Unable to retrieve team memberships', err: err});
    });
    return deferred.promise;
  };

  service.createMembership = function(userId, teamId, role) {
    var payload = {
      UserID: userId,
      TeamID: teamId,
      Role: role
    };
    return TeamMemberships.create({}, payload).$promise;
  };

  service.deleteMembership = function(id) {
    return TeamMemberships.remove({id: id}).$promise;
  };

  service.updateMembership = function(id, userId, teamId, role) {
    var payload = {
      UserID: userId,
      TeamID: teamId,
      Role: role
    };
    return TeamMemberships.update({id: id}, payload).$promise;
  };

  return service;
}]);