[Zope] calling dtmlMethod from python

Shane O'Sullivan shane.osullivan@engitech.ie
Tue, 30 Oct 2001 17:04:21 -0000


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Chris,
        thanks for your help...I tried your suggestion but it has now =
returned the error
Error Type: NameError
Error Value: global name '_' is not defined


If you have time, would you mind explaining what "_" represents? Is this =
defined in a library that we mightn't have included?

Thanks again,

Shaneo





  ----- Original Message -----=20
  From: Chris Kratz=20
  To: Shane O'Sullivan ; zope@zope.org=20
  Sent: Tuesday, October 30, 2001 4:26 PM
  Subject: Re: [Zope] calling dtmlMethod from python


  I ran into this awhile back.  Try this:
  =20
  context.scReport(None, _)
  =20
  Interestingly enough, I also learned that you can pass things into a =
dtml-method and they become available to use internally.  For example =
with the following call:
  =20
  context.scReport(None, _, MsgToUser=3D'Hello')
  =20
  Inside your dtml-method you could do a=20
  =20
  <dtml-var MsgToUser>
  =20
  This is very usefull to passing stuff around without cluttering up =
your REQUEST namespace.
  =20
  Another little trick I learned.  Want to find an object via =
acquisition and then call it?  I found that the following worked in a =
python script:
  =20
  methodToCall =3D _.getitem('methodName') # Find object via acquisition =
and get handle on it.
  print methodToCall(None, _)  # Call the method and print the results.
  =20
  This is really usefull if you generate the method name as I do =
depending on the request.  ie methodToCall =3D _.getitem(someStrVar + =
'form') will concatenate the two strings and then look for that object =
in the namespace.  If you do this kind of lookups, you should probably =
also check for existence before calling it, ie _.has_key(someStrVar + =
'form').
  =20
  Hope that helps.
  =20
  -Chris
  =20
  =20
  ------------------------------
  Chris Kratz
  chris.kratz@vistashare.com

    ----- Original Message -----=20
    From: Shane O'Sullivan=20
    To: zope@zope.org=20
    Sent: Tuesday, October 30, 2001 11:13 AM
    Subject: [Zope] calling dtmlMethod from python


    Can anyone please help with this, I'm new to zope and trying to =
write a simple python script to handle some logic which will then call a =
dtml method. I'm calling the method as such:    context.scReport()
    The error I'm getting back is Error Type: KeyError
                                             Error Value: =
standard_html_header
    standard_html_header is being called from the scReport method which =
suggests the scReport method is being invoked but why are we getting an =
error?? Any suggestions, TIA
    Shaneo

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<META content=3D"text/html; charset=3Diso-8859-1" =
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</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Chris,</FONT></DIV>
<DIV><FONT face=3DArial =
size=3D2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; thanks=20
for your help...I tried your suggestion but it has now returned the=20
error</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>
<P><STRONG>Error Type: NameError</STRONG><BR><STRONG>Error Value: global =
name=20
'_' is not defined</STRONG><BR></P>
<P>If you have time, would you mind explaining what "_" represents? Is =
this=20
defined in a library that we mightn't have included?</P>
<P>Thanks again,</P>
<P>Shaneo</P>
<P>&nbsp;</P>
<P>&nbsp;</P></FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: =
0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
  <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 href=3D"mailto:chris.kratz@vistashare.com"=20
  title=3Dchris.kratz@vistashare.com>Chris Kratz</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A=20
  href=3D"mailto:shane.osullivan@engitech.ie"=20
  title=3Dshane.osullivan@engitech.ie>Shane O'Sullivan</A> ; <A=20
  href=3D"mailto:zope@zope.org" title=3Dzope@zope.org>zope@zope.org</A> =
</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Tuesday, October 30, 2001 =
4:26=20
  PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: [Zope] calling =
dtmlMethod=20
  from python</DIV>
  <DIV><BR></DIV>
  <DIV><FONT face=3D"Courier New" size=3D2>I ran into this awhile =
back.&nbsp; Try=20
  this:</FONT></DIV>
  <DIV><FONT face=3D"Courier New" size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3D"Courier New" size=3D2>context.scReport(None, =
_)</FONT></DIV>
  <DIV><FONT face=3D"Courier New" size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3D"Courier New" size=3D2>Interestingly enough, I also =
learned that=20
  you can pass things into a dtml-method and they become available to =
use=20
  internally.&nbsp; For example with the following call:</FONT></DIV>
  <DIV><FONT face=3D"Courier New" size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3D"Courier New" size=3D2>context.scReport(None, _,=20
  MsgToUser=3D'Hello')</FONT></DIV>
  <DIV><FONT face=3D"Courier New" size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3D"Courier New" size=3D2>Inside your dtml-method you =
could do a=20
  </FONT></DIV>
  <DIV><FONT face=3D"Courier New" size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3D"Courier New" size=3D2>&lt;dtml-var =
MsgToUser&gt;</FONT></DIV>
  <DIV><FONT face=3D"Courier New" size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3D"Courier New" size=3D2>This is very usefull to =
passing stuff=20
  around without cluttering up your REQUEST namespace.</FONT></DIV>
  <DIV><FONT face=3D"Courier New" size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3D"Courier New" size=3D2>Another little trick I =
learned.&nbsp;=20
  Want to find an object via acquisition and then call it?&nbsp; I found =
that=20
  the following worked in a python script:</FONT></DIV>
  <DIV><FONT face=3D"Courier New" size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3D"Courier New" size=3D2>methodToCall =3D =
_.getitem('methodName') #=20
  Find object via acquisition and get handle on it.</FONT></DIV>
  <DIV><FONT face=3D"Courier New" size=3D2>print methodToCall(None, =
_)&nbsp; # Call=20
  the method and print the results.</FONT></DIV>
  <DIV><FONT face=3D"Courier New" size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3D"Courier New" size=3D2>This is really usefull if you =
generate=20
  the method name as I do depending on the request.&nbsp; ie =
methodToCall =3D=20
  _.getitem(someStrVar + 'form') will concatenate the two strings and =
then look=20
  for that object in the namespace.&nbsp; If you do this kind of =
lookups, you=20
  should probably also check for existence before calling it, ie=20
  _.has_key(someStrVar + 'form').</FONT></DIV>
  <DIV><FONT face=3D"Courier New" size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3D"Courier New" size=3D2>Hope that helps.</FONT></DIV>
  <DIV><FONT face=3D"Courier New" size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3D"Courier New" size=3D2>-Chris</FONT></DIV>
  <DIV><FONT face=3D"Courier New" size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3D"Courier New" size=3D2></FONT>&nbsp;</DIV>
  <DIV>------------------------------<BR>Chris Kratz<BR><A=20
  =
href=3D"mailto:chris.kratz@vistashare.com">chris.kratz@vistashare.com</A>=
<BR></DIV>
  <BLOCKQUOTE dir=3Dltr=20
  style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; =
MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
    <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 href=3D"mailto:shane.osullivan@engitech.ie"=20
    title=3Dshane.osullivan@engitech.ie>Shane O'Sullivan</A> </DIV>
    <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
href=3D"mailto:zope@zope.org"=20
    title=3Dzope@zope.org>zope@zope.org</A> </DIV>
    <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Tuesday, October 30, =
2001 11:13=20
    AM</DIV>
    <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [Zope] calling =
dtmlMethod from=20
    python</DIV>
    <DIV><BR></DIV>
    <DIV><FONT face=3DArial size=3D2>Can anyone please help with this, =
I'm new to=20
    zope and trying to write a simple python script to handle some=20
    logic&nbsp;which will then call a dtml method. I'm calling the =
method as=20
    such:&nbsp;&nbsp;&nbsp; context.scReport()</FONT></DIV>
    <DIV><FONT face=3DArial size=3D2>The error I'm getting back is =
<STRONG>Error=20
    Type:=20
    =
KeyError</STRONG><BR><STRONG>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Error=20
    Value: standard_html_header</STRONG></FONT></DIV>
    <DIV><FONT face=3DArial size=3D2>standard_html_header is being =
called from the=20
    scReport method which suggests the scReport method is being invoked =
but why=20
    are we getting an error?? Any suggestions, TIA</FONT></DIV>
    <DIV><FONT face=3DArial=20
size=3D2>Shaneo</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>

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