[Zope-DB] blobs and dtml-sqlvar

David Daniel Estévez Durey ahumboldt at humboldt.e.telefonica.net
Mon Jun 4 05:26:58 EDT 2007


First of all, if I am not in a mistake, your problem comes because of 
Zope and his Z SQL Methods, and the MySQLDBA Database Adapter (like 
other Database Adapters) can't fix it

When I have problems like yours, I  think the fastest choice is to use 
an ordinary <dtml-var> tag and give your application the functionality 
of improving security of it, because that is the main difference 
between <dtml-sqlvar> and <dtml--var>.

Anyway, I agree with you, Z SQL Methods (or documentation if not) need 
to be improved.

Hoping to be helpful (and sorry for my poor english)

El 02/06/2007, a las 0:58, e deleflie escribió:

> All,
> I'm using MySQLDBA, and I've got a Z SQL Method like this:
> select * from myTable where someValue=<dtml-sqlvar myValue type=string>
> The issue being that 'myValue' is actually a Hex value in a Blob
> column. The only types possible for dtml-sqlvar seem to be string and
> int (as far as I can tell).
> I noticed that when I use 'type=string' the value is always placed in
> inverted commas (and so MySQL thinks it is a string and rejects
> it).... and when I put 'type=int' the Hex value is rejected by Zope.
> Is it possible that MySQLDBA can not handle blobs / Hex values at all?
> I'm confused that dtml-sqlvar only sees 2 types of data.
> Can anyone help? ...
> Etienne

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