Re: [CDBI] How do I add a method to a loaded class?
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----- Original Message -----=20
From: John Beppu=20
To: Alex Aminoff=20
Cc: classdbi@xxxxx.xxxxxxxxxxxxxxxx.xxx=20
Sent: Sunday, August 07, 2005 12:13 AM
Subject: Re: [CDBI] How do I add a method to a loaded class?
On 8/6/05, Alex Aminoff <alex@xxxxxxxxx.xxx> wrote:
Very basic newbie question...
I have loaded up my database into a Class::DBI structure using =
Class::DBI::Loader. Now I would like to add a method to one of the =
autogenerated classes that will calculate some stuff based on various =
data, but otherwise appear in most respects like any other column from =
the DB. I'm pretty sure I want something using MyTable->columns( TEMP =
=3D> calcfield ).
Let's step back a bit. Why do you need to have the calcfield() method =
appear as a column? Isn't it enough that you managed to put the method =
into the MyTable namespace and are able to call it? =20
I want to generate an html table screen of the data, using =
Class::DBI::Plugin::HTML, which appears to rely on ->columns() to find =
out what columns should be displayed. Yes, one could just list the =
columns explicitly, but that defeats the elegance of not having to do =
so; plus, if I change my database schema in mysql, I dont want to have =
to sync up changes in my perl code.
I'm not actually using Class:DBI::Plugin::HTML, but rather my own module =
which will work with HTML::Template, just because that is what I'm =
familiar with already, but the principle is the same.
- Alex
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<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A title=3Djohn.beppu@xxxxx.xxx =
href=3D"mailto:john.beppu@xxxxx.xxx">John=20
Beppu</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dalex@xxxxxxxxx.xxx=20
href=3D"mailto:alex@xxxxxxxxx.xxx">Alex Aminoff</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Cc:</B> <A=20
title=3Dclassdbi@xxxxx.xxxxxxxxxxxxxxxx.xxx=20
=
href=3D"mailto:classdbi@xxxxx.xxxxxxxxxxxxxxxx.xxx">classdbi@xxxxx.xxxxxx=
lcraftsmen.net</A>=20
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Sunday, August 07, 2005 =
12:13=20
AM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: [CDBI] How do I =
add a method=20
to a loaded class?</DIV>
<DIV><BR></DIV>On 8/6/05, <B class=3Dgmail_sendername>Alex Aminoff</B> =
<<A=20
href=3D"mailto:alex@xxxxxxxxx.xxx">alex@xxxxxxxxx.xxx</A>> wrote:
<DIV><SPAN class=3Dgmail_quote></SPAN>
<BLOCKQUOTE class=3Dgmail_quote=20
style=3D"PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: =
rgb(204,204,204) 1px solid">
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Very basic newbie =
question...</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I have loaded up my database into a =
Class::DBI=20
structure using Class::DBI::Loader. Now I would like to add a method =
to one=20
of the autogenerated classes that will calculate some stuff based on =
various=20
data, but otherwise appear in most respects like any other column =
from the=20
DB. I'm pretty sure I want something using MyTable->columns( TEMP =
=3D>=20
calcfield ).</FONT></DIV></BLOCKQUOTE></DIV>
<DIV><BR><BR>Let's step back a bit. Why do you need to have the=20
calcfield() method appear as a column? Isn't it enough that you =
managed=20
to put the method into the MyTable namespace and are able to call =
it? =20
<BR></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV></BLOCKQUOTE>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I want to generate an html table screen =
of the=20
data, using Class::DBI::Plugin::HTML, which appears to rely on =
->columns() to find out what columns should be displayed. Yes, one =
could just=20
list the columns explicitly, but that defeats the elegance of not having =
to do=20
so; plus, if I change my database schema in mysql, I dont want to have =
to sync=20
up changes in my perl code.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I'm not actually using =
Class:DBI::Plugin::HTML, but=20
rather my own module which will work with HTML::Template, just because =
that is=20
what I'm familiar with already, but the principle is the =
same.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2> - Alex</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV></BODY></HTML>
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