[Zope] ZSQL update operations

[Casey Duncan]

Lee Marzke wrote:
> 
> On 12-Mar-01 Casey Duncan wrote:
> > Lee Marzke wrote:
> >>
> >> Hi,
> >>
> >> I'm displaying a set of data from a ZSQL method.  The showStatus
> >> method below works just fine.  I would now like to have a link
> >> on each data item allowing an ZSQL update or delete operation.
> >>
> >> Can this be done by passing args to the ZSQL method vai the
> >> URL?    I'm a beginner with Zope/ZSQL btw...
> >>
> >> I am partly unsure when the ZSQL method should define a parameter
> >> ( for instance to pass something by a URL, does that variable need
> >>   to be a paramenter )
> >>
> >> Thanks,
> >>
> >> Lee Marzke <lmarzke@kns.com>
> >>
> >> == statusALL  DTML method ==
> >> <dtml-in "objectValues('Folder')">
> >>   <dtml-var showStatus>
> >> </dtml-in>
> >>
> >> The following method shows data where the revname column is equal
> >> == showStatus DTML Method ==
> >> <h3><!--#var title_or_id--></h3>
> >> <table width="80%" border=0 cellpadding=5 cellspacing=0>
> >> <tr><th>ID</th><th>Name</th><th>Begin</th><th>End</th><th>Status</th></tr>
> >> <!--#in "show_pending()" -->
> >>    <!--#if sequence-even -->
> >>      <tr bgcolor="#eeeeee">
> >>    <!--#else -->
> >>      <tr bgcolor="#ffffff">
> >>    <!--#/if -->
> >>       <td><!--#var requestid --></td>
> >>       <td><!--#var username --></td>
> >>       <td><!--#var starttime --></td>
> >>       <td><!--#var endtime --></td>
> >>       <td><!--#var comment --></td>
> >>       <td><a href="<!--#var
> >>       "updateRequest.absolute_url()"-->">Update</a></td>
> >>   </tr>
> >> <!--#/in -->
> >> </table>
> >>
> >> ===showPending()  ZSQL method ===
> >> SELECT requestid, revname, username, starttime, endtime, comment, status
> >> FROM tableR <!--#sqlgroup where-->
> >>   <!--#sqltest revname op=eq type=string -->
> >>   <!--#and -->
> >>   status = 0
> >> <!--#/sqlgroup-->
> >>
> >> Lee Marzke <lmarzke@kns.com>             12-Mar-01, 10:58:07
> >> Kulicke & Soffa Industries
> >> 2101 Blair Mill Rd                       +1 215 784-6217
> >> Willow Grove, PA 19090                   +1 215 784-6014 fax
> >>
> >
> > Anything you want passed to your ZSQL method must be defined as an
> > argument. They come from the REQUEST object, so they can be passed
> > directly from a URL defined variable.
> >
> 
> Unfortunatly, since the "Update" links are created in a loop I can't
> rely on passin or pushing any variable.  I think I need a way of adding
> this information onto the links URL, but I don't know how to
> get this to work.
> 

Sorry I didn't get back to you yesterday, things got busy late. Anyhow,
I
think this is very much doable.

The update operation would likely need to got to a form populated from
your
existing query. The link would look like this:

<a href="&dtml.url-updateRequest;?requestid=&dtml-requestid;">Update</a>

My recommendation for the delete link would be to create a short DTML
method
called deleteRequest that calls an SQL method to delete the record then
redirects
back to the showStatus page (or whatever page it came from). This can be
accomplished
with a bit of URL mangling like so:

<a href="&dtml-URL;/deleteRequest?requestid=&dtml-requestid;">Delete</a>

The deleteRequest method would look like so:

<dtml-call name="sqlDeleteRequest">
<dtml-call expr="RESPONSE.redirect(URL1)">

You would then need to create an ZSQL method sqlDeleteRequest with a
single argument: requestid

DELETE FROM tableR
WHERE <dtml-sqltest name="requestid" type="int">

hth
-- 
| Casey Duncan
| Kaivo, Inc.
| cduncan@kaivo.com
`------------------>