Re: [Zope] Passing Parameters to External Methods
Actually, I not receiving an error anymore but a pdf is not being
generated either. When I test my External Method directly through the
ZMI the only thing that is returned is the following line:
__builtin__.html2pdf instance at 0x4a1e8f0
I have tried passing in the parameters using the request object as well as
hard-coding them in but in both cases a pdf is not generated and there is
no traceback. The code for my External Method is as follows:
# Added by Asad Habib to allow use as an External Method from Zope
def createHtmlToPdf(self):
return
html2pdf('/Applications/Plone2/Library/Software/Zope270/Zope/error.html',
'orbweaver.engin.umich.edu',
'/Applications/Plone2/Library/Software/Zope270/Zope/error.pdf')
# This is based on a php script (c) Jason Rust [EMAIL PROTECTED]
# See that script for licensing
# Convert an HTML file to a PDF file using html2ps and ps2pdf
from tempfile import gettempdir, mkstemp
import os
import re
from re import IGNORECASE, DOTALL
from copy import copy
class html2pdf:
def __init__(self, in_htmlFile, in_domain, in_pdfFile = None):
Constructor
in_htmlFile The full path to the html file to convert
in_domain The default domain name for images that have a relative path
in_pdfFile (optional) The full path to the pdf file to output. If not
given then we create a temporary name.
self.htmlFile = '' #The full path to the file we are parsing
self.pdfFile = '' #The full path to the output file
self.tmpDir = gettempdir() #The temporary directory to save
intermediate files
self.debug = False #Whether or not we are in debug mode
self.htmlErrors = False #Whether we output html errors
self.defaultDomain = '' #The default domain for relative images
self.html2psPath = '/usr/bin/html2ps' #The path to the html2ps
executable
self.ps2pdfPath = '/usr/bin/ps2pdf' #The path to the ps2pdf executable
self.getUrlPath = '/usr/bin/curl -i' #The path to your get URL
program, including options to get headers
self.useCSS = True #Whether or not to try and parse the CSS in the
html file and use it in creating the pdf
self.additionalCSS = '' #Other styles to use when parsing the page
self.pageInColor = True #Show the page in color?
self.grayScale = False #Show the images be in grayscale?
self.scaleFactor = 1 #Scale factore for the page
self.underlineLinks = None #Whether to underline links or not
self.headers ={} #The header information # self.headers was
array('left' = '$T', 'right' = '$[author]')
self.footers ={} #The footer information #self.footers was
array('center' = '- $N -')
self.html2psrc =
option:
titlepage: 0; /* do not generate a title page */
toc: 0; /* no table of contents */
colour: %pageInColor%; /* create the page in color */
underline: %underlineLinks%; /* underline links */
grayscale: %grayScale%; /* Make images grayscale? */
scaledoc: %scaleFactor%; /* Scale the document */
}
package:
geturl: %getUrlPath%; /* path to the geturl */
}
showurl: 0; /* do not show the url next to links */
#Default html2ps configuration that we use (is parsed before being
used, though)
self.makeAbsoluteImageUrls = True
Whether HTML_ToPDF should replace all relative image paths in the
input HTML document with the default domain or not. Switch this to
false if you want to convert a HTML file which is located locally in
the
file system and is not reachable via HTTP but all the images used
in the HTML file are located correctly according to their relative
paths.
self.ps2pdfIncludePath = '' #Include path for ps2pdf (-I option), for
example to specify where to search for font files, etc.
self._htmlString = ''; #We use this to store the html file to a string
for manipulation
self.htmlFile = in_htmlFile
self.defaultDomain = in_domain
if in_pdfFile is None:
tempFile = mkstemp(prefix = 'PDF-', dir = self.tmpDir)
os.close(tempFile[0]) #close the file handle which is opened by
mkstemp
self.pdfFile = tempFile[1]
else:
self.pdfFile = in_pdfFile
#==
def addHtml2PsSettings(self, in_settings):
Adds on more html2ps settings to the end of the default set of
settings.
self.html2psrc += \n + in_settings
#==
def setDebug(self, in_debug):
Sets the debug variable: true (debugging on) or false (debugging
off).
self.debug = in_debug
#==
def setHeader(self, in_attribute, in_value):
Sets a header.
@param string $in_attribute One of the header attributes that html2ps
accepts. Most
Re: [Zope] Passing Parameters to External Methods
On Thu, Nov 17, 2005 at 10:02:12AM -0500, Asad Habib wrote:
Actually, I not receiving an error anymore but a pdf is not being
generated either. When I test my External Method directly through the
ZMI the only thing that is returned is the following line:
__builtin__.html2pdf instance at 0x4a1e8f0
Well, that's not unexpected :) Your external method returns
an html2pdf instance, and that's exactly what you see here
- as a string.
If you want this method to return an actual viewable PDF,
you need to find some method of getting the actual PDF data
out of the object, and return *that*.
Or better, if the PDF is large, hopefully html2pdf has
some way to read data from it in chunks. Then you can do
something vaguely like (subsituting appropriate method calls):
response = REQUEST.RESPONSE
response.setHeader('Content-Length', your_pdf_object.get_size())
response.setHeader('Content-Type', 'application/pdf')
for data in your_pdf_object.read_data_by_chunks():
response.write(data)
This will get data to the client faster, and maybe save memory
on the server depending on how html2pdf works.
--
Paul Winkler
http://www.slinkp.com
___
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[Zope] Passing Parameters to External Methods
Hello. I am trying to use the Python version of the PHP script written by Jason Rust called 'HTML_ToPDF.php'. I have represented this script using an External Method since it uses functions, such as open, which cannot be used in Zope Python scripts for security reasons. The python code for the script consists of a class definition and so I have had to create a python function which instantiates an object of this class. However, I am having toruble passing parameters to this function which are needed by the class constructor to instantiate an object of this class. Can parameters be passed to external methods? Whenever I try to pass parameters to function 'createHtmlToPdf', Zope returns an error stating that no such function exists. Other on the hand, if I pass no parameters this call is successful but the init function fails complaining that three parameters are expected. I have provided a snippet of my code below. Any help would be greatly appreciated. Thanks. - Asad def createHtmlToPdf(in_htmlFile, in_domain, in_pdfFile): return html2pdf(in_htmlFile, in_domain, in_pdfFile) # This is based on a php script (c) Jason Rust [EMAIL PROTECTED] # See that script for licensing # Convert an HTML file to a PDF file using html2ps and ps2pdf from tempfile import gettempdir, mkstemp import os import re from re import IGNORECASE, DOTALL from copy import copy class html2pdf: def __init__(self, in_htmlFile, in_domain, in_pdfFile = None): Constructor in_htmlFile The full path to the html file to convert in_domain The default domain name for images that have a relative path in_pdfFile (optional) The full path to the pdf file to output. If not given then we create a temporary name. ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Passing Parameters to External Methods
On Wed, Nov 16, 2005 at 09:30:22AM -0500, Asad Habib wrote: Can parameters be passed to external methods? Certainly. Whenever I try to pass parameters to function 'createHtmlToPdf', Zope returns an error stating that no such function exists. Can you provide us with the complete traceback? -- Paul Winkler http://www.slinkp.com ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Passing Parameters to External Methods
Asad Habib wrote: Hello. I am trying to use the Python version of the PHP script written by Jason Rust called 'HTML_ToPDF.php'. I have represented this script using an External Method since it uses functions, such as open, which cannot be used in Zope Python scripts for security reasons. The python code for the script consists of a class definition and so I have had to create a python function which instantiates an object of this class. However, I am having toruble passing parameters to this function which are needed by the class constructor to instantiate an object of this class. Can parameters be passed to external methods? Whenever I try to pass parameters to function 'createHtmlToPdf', Zope returns an error stating that no such function exists. Other on the hand, if I pass no parameters this call is successful but the init function fails complaining that three parameters are expected. I have provided a snippet of my code below. Any help would be greatly appreciated. Thanks. def createHtmlToPdf(in_htmlFile, in_domain, in_pdfFile): return html2pdf(in_htmlFile, in_domain, in_pdfFile) Functions in external methods generally start with the 'self' parameter. Your description of the error messages doesn't entirely support my supposition, but you could try it. --jcc -- Building Websites with Plone http://plonebook.packtpub.com/ Enfold Systems, LLC http://www.enfoldsystems.com ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Passing Parameters to External Methods
Hi Cameron. You are right but the self parameter is implicitly passed. - Asad On Wed, 16 Nov 2005, J Cameron Cooper wrote: Asad Habib wrote: Hello. I am trying to use the Python version of the PHP script written by Jason Rust called 'HTML_ToPDF.php'. I have represented this script using an External Method since it uses functions, such as open, which cannot be used in Zope Python scripts for security reasons. The python code for the script consists of a class definition and so I have had to create a python function which instantiates an object of this class. However, I am having toruble passing parameters to this function which are needed by the class constructor to instantiate an object of this class. Can parameters be passed to external methods? Whenever I try to pass parameters to function 'createHtmlToPdf', Zope returns an error stating that no such function exists. Other on the hand, if I pass no parameters this call is successful but the init function fails complaining that three parameters are expected. I have provided a snippet of my code below. Any help would be greatly appreciated. Thanks. def createHtmlToPdf(in_htmlFile, in_domain, in_pdfFile): return html2pdf(in_htmlFile, in_domain, in_pdfFile) Functions in external methods generally start with the 'self' parameter. Your description of the error messages doesn't entirely support my supposition, but you could try it. --jcc -- Building Websites with Plone http://plonebook.packtpub.com/ Enfold Systems, LLC http://www.enfoldsystems.com ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Passing Parameters to External Methods
Asad Habib wrote: Hi Cameron. You are right but the self parameter is implicitly passed. It is implicitly passed, but must be explicitly defined:: def createHtmlToPdf(self, in_htmlFile, in_domain, in_pdfFile): return html2pdf(in_htmlFile, in_domain, in_pdfFile) When you say:: context.createHtmlToPdf(in_htmlFile, in_domain, in_pdfFile) Python ends up calling this method/function something like:: createHtmlToPdf(context, in_htmlFile, in_domain, in_pdfFile) Your message signature must agree. --jcc On Wed, 16 Nov 2005, J Cameron Cooper wrote: Asad Habib wrote: Hello. I am trying to use the Python version of the PHP script written by Jason Rust called 'HTML_ToPDF.php'. I have represented this script using an External Method since it uses functions, such as open, which cannot be used in Zope Python scripts for security reasons. The python code for the script consists of a class definition and so I have had to create a python function which instantiates an object of this class. However, I am having toruble passing parameters to this function which are needed by the class constructor to instantiate an object of this class. Can parameters be passed to external methods? Whenever I try to pass parameters to function 'createHtmlToPdf', Zope returns an error stating that no such function exists. Other on the hand, if I pass no parameters this call is successful but the init function fails complaining that three parameters are expected. I have provided a snippet of my code below. Any help would be greatly appreciated. Thanks. def createHtmlToPdf(in_htmlFile, in_domain, in_pdfFile): return html2pdf(in_htmlFile, in_domain, in_pdfFile) Functions in external methods generally start with the 'self' parameter. Your description of the error messages doesn't entirely support my supposition, but you could try it. --jcc -- Building Websites with Plone http://plonebook.packtpub.com/ Enfold Systems, LLC http://www.enfoldsystems.com ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) -- Building Websites with Plone http://plonebook.packtpub.com/ Enfold Systems, LLC http://www.enfoldsystems.com ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Passing Parameters to External Methods
On Wed, Nov 16, 2005 at 11:26:10AM -0600, J Cameron Cooper wrote: Asad Habib wrote: Hi Cameron. You are right but the self parameter is implicitly passed. It is implicitly passed, but must be explicitly defined:: def createHtmlToPdf(self, in_htmlFile, in_domain, in_pdfFile): return html2pdf(in_htmlFile, in_domain, in_pdfFile) When you say:: context.createHtmlToPdf(in_htmlFile, in_domain, in_pdfFile) Python ends up calling this method/function something like:: createHtmlToPdf(context, in_htmlFile, in_domain, in_pdfFile) Your message signature must agree. No, it's optional. If you don't inlude self in the signature, it's not passed. You can see this in the source of ExternalMethod.py: if ((self._v_func_code.co_argcount- len(self._v_func_defaults or ()) - 1 == len(args)) and self._v_func_code.co_varnames[0]=='self'): return f(self.aq_parent.this(), *args, **kw) I think the problem lies elsewhere. Traceback? -- Paul Winkler http://www.slinkp.com ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Passing Parameters to External Methods
Paul Winkler wrote: On Wed, Nov 16, 2005 at 11:26:10AM -0600, J Cameron Cooper wrote: Asad Habib wrote: Hi Cameron. You are right but the self parameter is implicitly passed. It is implicitly passed, but must be explicitly defined:: def createHtmlToPdf(self, in_htmlFile, in_domain, in_pdfFile): return html2pdf(in_htmlFile, in_domain, in_pdfFile) When you say:: context.createHtmlToPdf(in_htmlFile, in_domain, in_pdfFile) Python ends up calling this method/function something like:: createHtmlToPdf(context, in_htmlFile, in_domain, in_pdfFile) Your message signature must agree. No, it's optional. If you don't inlude self in the signature, it's not passed. You can see this in the source of ExternalMethod.py: if ((self._v_func_code.co_argcount- len(self._v_func_defaults or ()) - 1 == len(args)) and self._v_func_code.co_varnames[0]=='self'): return f(self.aq_parent.this(), *args, **kw) I think the problem lies elsewhere. Traceback? I thought I'd seen that work before, but didn't want to dip into asides. Oh well. There goes my guess. --jcc -- Building Websites with Plone http://plonebook.packtpub.com/ Enfold Systems, LLC http://www.enfoldsystems.com ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Passing parameters to external methods is broken...
Andreas Pauley wrote: I have an external method that looks (somewhat) like this: def extAccess(self, accttype_cde): return accttype_cde dtml-if "extAccess(accttype_cde='COM')" bThe external method returned true/b /dtml-if I get the following error for the above statement: Error Type: TypeError Error Value: not enough arguments; expected 2, got 0 Yup, been there, done that, the thread's in the zope-dev archive if you're interested... The way external methods handle parameters is 'interesting' to say the least. Your safest bet is just to use the REQUEST variable to pass stuff, as someone else suggested. cheers, Chris ___ 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] Passing parameters to external methods
Hi, I need to pass some parameters to my external methods. I have an external method that looks (somewhat) like this: def extAccess(self, accttype_cde): return accttype_cde In the following dtml code, the following statement (with the SQL method) works fine: dtml-if "sqlAccess(accttype_cde='COM')" bsqlAccess returned something/b /dtml-if This statement, referencing my external method but using the same syntax as with the sql method, gives lots of headaches: dtml-if "extAccess(accttype_cde='COM')" bThe external method returned true/b /dtml-if I get the following error for the above statement: Error Type: TypeError Error Value: not enough arguments; expected 2, got 0 Anybody any ideas? Thanks, Andreas. -- In a world without fences, who needs gates? ___ 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] Passing parameters to external methods
Ive always sent through the REQUEST with no problem, dtml-var "externalmethod(REQUEST)" if you can do that. - Original Message - From: "Andreas Pauley" [EMAIL PROTECTED] To: "Zope" [EMAIL PROTECTED] Sent: Wednesday, September 13, 2000 2:49 PM Subject: [Zope] Passing parameters to external methods Hi, I need to pass some parameters to my external methods. I have an external method that looks (somewhat) like this: def extAccess(self, accttype_cde): return accttype_cde In the following dtml code, the following statement (with the SQL method) works fine: dtml-if "sqlAccess(accttype_cde='COM')" bsqlAccess returned something/b /dtml-if This statement, referencing my external method but using the same syntax as with the sql method, gives lots of headaches: dtml-if "extAccess(accttype_cde='COM')" bThe external method returned true/b /dtml-if I get the following error for the above statement: Error Type: TypeError Error Value: not enough arguments; expected 2, got 0 Anybody any ideas? Thanks, Andreas. -- In a world without fences, who needs gates? ___ 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 )
