Thanks Uwe and Diez, I'll give these suggestions a go.. -C
On Wed, Jun 17, 2009 at 6:38 AM, Diez B. Roggisch <[email protected]> wrote: > > Corey Kovacs schrieb: > > I am trying create a representation of a computer rack using genshi in > > TG2. What I am trying to do is > > loop through the rack elevations and when I find an elevation where a > > host belongs, I want to add some > > data to show a host is at that spot. Thats the easy part. I also want to > > modify the rowspan for the <td> > > element so that the host <td> spans the appropriate number of elevations > > to show the vertical size of > > the machine. > > > > I've done this using PHP but have long since decided to rewrite my > > project in Python/TG. Now I am > > finding that i am somewhat limited in what i can achieve with immutable > > variables. > > > > Basically, I need this.. > > > > temp=0 > > print "<TABLE>" > > print "<TR><TD>row</TD><TD>rack.rackid</TD><TD>row</TD></TR>" > > for(row=1; row<43; row++) > > for host in hostlist: > > if host.elevation == row: > > uspan = host.height-1 > > print "<TR><TD>row</TD><TD > > rowspan=uspan>host.hostname</TD><TD>row</TD></TR>" > > while temp > 0 : > > row++ > > print "<TR><TD>row</TD><TD>row</TD></TR>" > > uspan-- > > else > > print "<TR><TD>row</TD><TD></TD><TD>row</TD></TR>" > > > > print "<TR><TD>row</TD><TD>PDU</TD><TD>row</TD></TR>" > > print "<TR><TD>row</TD><TD>PDU</TD><TD>row</TD></TR>" > > > > > > The above (really ugly) pseudo-code mashup tries to explain it > > I guess there is an error in there, the temp-variable is never set. But > I guess you could ditch it & use > > while uspan: > ... > > > Now in genshi, one does this via pre-computation of the rowlist. > Essentially, you extract your logic to create a data-structure that fits > your needs. You can do this in your controller (I don't see anything > wrong with that, the MVC-pattern in webapps goes only so far), or inside > a <?python-block. > > rows = [None] * 43 > for host in hostlist: > host_rows = [Bunch()] * host.height > for row in host_rows: > row.rowspan = None > row.host = host # for template reference > host_rows[0].rowspan = host.heighth - 1 > rows[host.elevation:host.elevation + host.height] = host_rows > > > Then in the template, you can do this: > > <table> > <py:c py:strip="True" py:for="row in rows"> > <tr py:if="not row">normal row without host</tr> > <tr py:if="row and row.rowspan"><!-- first row with host --> > </tr> > <tr py:if="row and not row.rowspan"><!-- following host-rows --> > </tr> > </py:c> > </table> > > > > Diez > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "TurboGears" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/turbogears?hl=en -~----------~----~----~----~------~----~------~--~---
