Add Checked Attribute to Custom User Fields on Frontend User Form

Question

I have a multi-select for users to sign up for newsletters. When they edit their profile they need to be able to see which newsletters they are already signed up for. I have the code to output the entire options list or just the ones that they have selected but I haven't figured a way to add the selected attribute to the ones the user has selected.

{% set newsletters = craft.fields.getFieldByHandle('newsletters') %}
<select multiple>
    {% for opt in newsletters.settings.options %}
        <option value="{{ opt.value }}" >{{ opt.label }}</option>
    {% endfor %}
</select>

The "for opt in newsletters.settings.options" can be changed to "for opt in newsletters.settings" to show just the ones the user has already selected.

Answer 1

Solved!

{% for letter in currentUser.newsletters.options %}
    <input type="checkbox" value="{{ letter.value }}" name="{{ letter.value }}" id="{{ letter.value }}"
        {% if letter.selected == true %}checked="checked" {% endif %}/>
    <label for ="{{ letter.value }}">{{ letter.label }}</label>
{% endfor %}