Here is something very basic:

db.define_table('message',
    Field('for_user','reference_user'),
    Field('body'),
    auth.signature)

@auth.requires_login()
def post_message():
    user_id = request.args(0,cast=int)
    db.message.for_user.default = user_id
    db.message.for_user.readable = db.message.for_user.writable=False
    form = SQLFORM(db.message).process()
    return locals()

@auth.requires_login()
def messages_for_me():
     grid = 
SQLFORM.grid(db.message.for_user==auth.user.id,editable=False,create=False)
     return locals()


On Sunday, 4 August 2013 20:29:47 UTC-5, Alex Glaros wrote:
>
> Can anyone help me think of a primitive form of internal messaging between 
> users of an app?  No external email, nothing fancy because I have limited 
> programming skill.
>
> The only requirement is that a user can leave a message for another user, 
> and the other user can reply.
>
> Example: 
>
>
>    1. User-A leaves a message for User-B, "Hi, can you please give me 
>    your external email address?"  
>    2. User-B says: "Sure, here it is, [email protected] <javascript:>"
>    
>
> So I suppose there might be a db.Internal_Mail table.
>
>
>    - auth_user_message_sender
>    - auth_user_message_recipient
>    - subject_of_message
>    - body_of_message
>    - date_time_sent
>    - has_this_message_been_read_yet?
>    
>
>
>    1. set up permissions so that users can read all records in 
>    db.Internal_Mail table that have their name either in the 
>    auth_user_messsage_sender or  auth_user_message_recipient fields
>    2. set up permissions so that users can edit/delete all records in 
>    db.Internal_Mail table that have their name in the auth_user_sender field
>    
>
> Based on above, seems that smartgrid or grid could handle all of the 
> requirements except knowing how to reply and to who, which seems 
> complicated to program. To reply, perhaps would have a controller named 
> reply_to_an_email.  It would let user 
>
>    1. search through the emails
>    2. somehow select only one
>    3. then create a record in db.Internal_Mail table that switches 
>    contents of sender and recipient fields of selected record, copies subject 
>    line from the received message, and lets recipient fill out the body of 
> the 
>    reply message.
>    
>
> Any ideas? Is this already written elsewhere?  If not, would this be 
> useful to anyone else?
>
> Thanks,
>
> Alex Glaros
>

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