[Zope] ZPT, DTML, SQL and Forms

[Colin Fox]

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On Tue, 2002-03-26 at 08:29, Jeff Peterson wrote:
<...>
> Well, you need to execute the ZSQL method obviously, and you can do this
> more than one way:
>=20
> One way to do it is to call it in a Script (python) and pass the informat=
ion
> by the request namespace:
>=20
> Script (python)
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>=20
> data =3D context.your_sql([param=3Dvalue])
> #assuming you returned 1 row
> context.REQUEST.set('field', data[0]['colname'])
> return context.your_template(context)
>=20
> then
>=20
>   <tr>
>     <td><LABEL for=3D"firstname">First name: </LABEL></td>
>     <td><INPUT type=3D"text" name=3D"first_name" value=3D""
>                tal:attributes=3D"value request/field"
>                tal:on-error=3D"string:">
>     </td>
>   </tr>

Thanks Jeff - this got me going again. I've decided to go this route,
because it keeps the template very simple. My script ended up being:

res =3D context.get_customer(personid=3Dpid)
d =3D res.dictionaries()[0]
for k in d.keys():
    context.REQUEST.set(k, d[k])

Since the column names are (intentionally) the same as the input field
names, I can get away with just using they key values.

Now that I think of it, this script is quite generic, except for the
call to get_customer(). I'm going to have at least 2 more add/edit/seach
sections within my site, and I'm going to end up copying all this stuff
and just renaming one function call.

It would be great if I could call this "populate" or something, and just
pass the name of the sql query to execute. I'm not sure how to do this
in Zope (in Python, I could just create a function object to execute,
but I don't know if that's possible in zope, or if so, what the
semantics are).

I have an allergy to cutting/pasting code and only changing one thing.
I'd really like to parameterize as much as possible.

Any ideas?

--=20
Colin Fox                                       cfox@crystalcherry.com
CF Consulting Inc.                                    GPG Fingerprint:
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