I'm inheriting template from online events app. there's registration for events there and I've added some field that user fills with text. I need this text to be saved in database so i can display what user inputed in he's profile in online events attendees. Below is the template part where I added place to input text by user. I think getting data from website is done with controllers but I just don't know how.

<div class="input-group">
    <t t-foreach="event.question_id" t-as="question">
        <span class="input-group-addon"><t t-esc='question.title'/>
            <input type="text" class="form-control" t-attf-answers="#{counter}-answers" widget="text" t-att-placeholder="'Question #%s' %question.id"/>
        </span>
    </t>
</div>