assuming you've
def index():
form = SQLFORM(db.tab)
if form.accepts(request.vars, session):
response.flash = 'x'
records = db().select(db.tab.ALL)
return dict(form=form, records=records)
then in view you can do something like:
{{extend 'layout.html'}}
{{=form}}
<table>
<tr>
<th>name</th>
<th>image</th>
</tr>
{{for record in records:}}
{{filename, file = db.tab.x.retrieve(record.x)}}
<tr>
<td>
{{=filename}}
</td>
<td>
image goes here
</td>
</tr>
{{pass}}
</table>

