Re: [Zope] Fw: [Zope] Parameter in ZSQL
Indra Gunawan wrote: > > Thanks man that really works..!!... > I want to ask another question > can I retrieve a random row from a table? Yes, you can - but how is a bit dependent on your database, if you want it to be efficient. The problem here is that SQL does not by itseld define a rownum or similar. If, on the other hand, you have a unique, sequential "id" column in your table, you can use that in a SELECT statement. Read up on SELECT in your SQL manual. Probably, I'd do it as follows (untested, but should give you the general idea): in your DTML method, use an expression to get a random value between 1 and the number of rows in your table. An SQL method like SELECT count(*) AS rowcount FROM table; gives you the total number of rows. An expression like int(rnd()*rowcount) will give you a random value to use in a SELECT (you'll need to define it as a parameter or pass it in via REQUEST). You could use your current ShowProduct for that. For the details of the random call, see your Python manual (mine is in the office). HTH, Jan ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Fw: [Zope] Parameter in ZSQL
Thanks man that really works..!!... I want to ask another question can I retrieve a random row from a table? if can, could anyone tell me (using the same table and scheme from the previous question) Thanks again Mr Philipp Auersperg -IGUN- ICQ:1474584 > > > > call : > > > > > > with you just define a variable in the current namespace > > > > Philipp Auersperg (zwork) > > > > > ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Parameter in ZSQL
call : with you just define a variable in the current namespace Philipp Auersperg (zwork) *** REPLY SEPARATOR *** On 13.08.2000 at 17:27 Indra Gunawan wrote: >Hello All >here's the problem >my Zope 2.2.0 is running on win98 >my Database is a MySQL > >I created a ZSQL method named ShowProduct with parameter product_id > >the template as follows : select * from products where type=string> > >why can't I call the ZSQL method directly (without using the GET/POST >variables)? >I try to call it like this > > > >...(i would like to insert some of programs here if this is working) > > > > >it always returns error like this >Error Type: Bad Request >Error Value: ['product_id'] > >can anyone help please? is there any workaround for this? >TIA > >-IGUN- >ICQ:1474584 > > > > >___ >Zope maillist - [EMAIL PROTECTED] >http://lists.zope.org/mailman/listinfo/zope >** No cross posts or HTML encoding! ** >(Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope-dev ) ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Parameter in ZSQL
Hello All here's the problem my Zope 2.2.0 is running on win98 my Database is a MySQL I created a ZSQL method named ShowProduct with parameter product_id the template as follows : select * from products where why can't I call the ZSQL method directly (without using the GET/POST variables)? I try to call it like this ...(i would like to insert some of programs here if this is working) it always returns error like this Error Type: Bad Request Error Value: ['product_id'] can anyone help please? is there any workaround for this? TIA -IGUN- ICQ:1474584 ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
