tp_servicedesk/app/ui/views/user/edit.html

<form method="POST" action="/user/{{@edit_user.id}}/update">
    {{ \CSRFHelper::field() | raw }}
    <div class="field">
        <label class="label">Username</label>
        <div class="control">
            <input class="input" name="username" type="text" value="{{ @edit_user.username}}">
        </div>
    </div>
    <div class="field">
        <label class="label">Role</label>
        <div class="select">
            <select class="select" name="role">
                <option value="user">User</option>
                <option value="admin">Admin</option>
            </select>
        </div>
    </div>
    <div class="field">
        <div class="control">
            <button class="button is-primary" type="submit">Edit User</button>
        </div>
    </div>
</form>