Lightning Component for the User Freezer Blog Post

UserFreezer.cmp

<aura:component controller="UserFreezer">
	<aura:handler name="init" value="{!this}" action="{!c.doInit}"/>    
    <aura:attribute name="UserDetails" type="Object" />
    <aura:attribute name="Message" type="String" />
    
    <table>
        <tr>
			<th>First Name</th>
			<th>Last Name</th>
			<th>Username</th>
			<th>Frozen</th>
        </tr>
        <aura:iteration items="{!v.UserDetails}" var="ud">
            <tr>
                <td>{!ud.user.FirstName}</td>
                <td>{!ud.user.LastName}</td>
                <td>{!ud.user.Username}</td>
                <td id="{!ud.user.Id}">
                    <ui:inputCheckbox change="{!c.frozenChanged}" 
                                      value="{!ud.userLogin.IsFrozen}" />
                </td>
            </tr>
        </aura:iteration>
    <tr>
        <td colspan="5" class="apply">
		    <button onclick="{!c.applyChanges}">Apply</button>
        </td>
    </tr>
    </table>
    {!v.Message}
</aura:component>