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Editorial Team
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Asked: 2026-05-26T21:51:41+00:00

This is probably a simple question, I have a form that you put in

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This is probably a simple question, I have a form that you put in a comment it redirects to another page upon submit and displays all comments in a list. I am wondering how i can add an erase button to each list item to remove that particular comment.

Thank you in advance, 

db.define_table('discussion',
                Field('comment', 'text'))

def comment():
    form = SQLFORM(db.discussion, _class='test1')
    if form.process().accepted:
        redirect(URL('comment_results'))
    return dict(form=form)  

def comment_results():
    items = db(db.discussion.id==db.discussion.id).select()
    ???? erase = db(db.discussion.id==).delete() ????
    ### trying to create an erase button to delete the currently displayed comment ###
    return dict(items=items, erase=erase)

view:
<html>
    <head>
        <link rel="stylesheet" href="{{=URL('static','css/test.css')}}">
    </head>
        <body>
            {{for item in items:}}
            <li>{{=item.id}} Comment = {{=item.comment}}<button id="{{=erase}}">erase</button></li> 
            {{pass}}
        </body>
</html>

* Answer *
View:

<html>
    <head>
        <link rel="stylesheet" href="{{=URL('static','css/test.css')}}">
    </head>
        <body>
            {{for item in items:}}
            {{=item.comment}}<a href="{{=URL('delete', args=item.id)}}">  Delete</a>
            {{pass}}
        </body>
</html>

* I just passed the args to the delete method in the controller *
Controller:

def delete():
    query = db(db.discussion.id==request.args(0)).select().first()  ## grabbing comment to be deleted from comment_results
    remove = db(db.discussion.id==query).delete()
    if remove:
        redirect(URL('comment_results'))
    return dict(remove=remove)
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1 Answer

  1. Editorial Team

    if you look here http://web2py.com/book/default/chapter/07#SQLFORM-and-insert/update/delete

    They mention a field called deletable for appadmin that might be it.

    Maybe try:

        form = SQLFORM(db.discussion, _class='test1', deletable=True)

    for that one line to see if it works.

    edit: sorry, wrong field. You’ll have to create a form though.

    I think that’s it, because it says on the page I linked:

    An update form is very similar to a create form except that it is
    pre-populated with the current record and it previews images. By
    default deletable = True which means the update form will display a
    “delete record” option.

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