November 1999 - Zope

(more on) programatically adding ZClass instances ...
by Darran Edmundson 23 Nov '99

23 Nov '99

I am slowly coming to grips with using external methods to reach into the ZODB. Right now, I am trying to create an instance of a folderish ZClass and then populate it with (pre-existing) images from elsewhere in the ZODB. (The following URL has been very helpful http://www.zope.org/Members/tazzzzz/addZClasses.) Excerpts of my external method: # create an instance of MyClass container=parent.Control_Panel.Products.MyProduct.MyClass(container_id) # make container a child object of parent parent._setObject(container_id, container) # set various attributes of container container.id = container_id container.foo = foobar # assume image points to a proper ZClass Image container.manage_addImage(image.id, image.data, '') A few questions: *) The final manage_addImage call occassionally fails with a seek error on image.data.  File /usr/local2/Zope/lib/python/OFS/Image.py, line 265, in _read_data (Object: default_image) AttributeError: (see above) I have verified that image is a valid Image and that: repr(image) = <Image instance at 8551e90> len(image.data) = 13611 type(image.data) = <extension class Acquisition.ImplicitAcquirerWrapper at 40160680> repr(image.content_type) = 'image/jpeg' Can someone offer advice as to why my read of image.data fails? *) What happens to container if I *don't* execute parent._setObject(container_id, container)? Doing this, I notice that the size of Data.fs does not increase (before running external method compard to after). Does this mean that Zope has somehow recognized that container doesn't have a parent and deleted it? I'm worried that I could corrupt my database during development of external methods that create/delete/manipulate the ZODB. Cheers, Darran. -- Darran Edmundson [Darran.Edmundson(a)anu.edu.au]

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depthfinder
by Ethan Fremen 23 Nov '99

23 Nov '99

I'm trying to include code in my standard_html_footer that checks to see if I'm more than 2 folders deep in the site. If so, I want a back button. why doesn't this work? It fails if PARENTS[1] evaluates to false. <dtml-if "PARENTS[1]"><a href="<dtml-var "PARENTS[1].absolute_url()">">back</a></dtml-if> last lines of traceback: File /usr/local/src/Zope-2.0.0-src/lib/python/DocumentTemplate/DT_Util.py, line 321, in eval (Object: PARENTS[1]) File <string>, line 0, in ? File /usr/local/src/Zope-2.0.0-src/lib/python/DocumentTemplate/DT_Util.py, line 156, in careful_getitem IndexError: list index out of range (zope 2.0.0), i know about the security issue & will upgrade before going live. -- Ethan "mindlace" Fremen you cannot abdicate responsibility for your ideology.

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Executing stored procedures in Oracle using ZOracleDA
by Bruno Mattarollo 22 Nov '99

22 Nov '99

Hello I am trying to execute a PL/SQL stored procedure from a ZSQL method. I am using Zope 2.0.1, ZOracleDA 2.1.0, Oracle 8i, all on a Sun UltraSparc machine. The stored procedure is valid. It works. I have read the DCOracle release information and it states that it supports the invocation of stored procedures. I need this in order to use the UserDB product, because my user information is splitted over many tables, and I execute a stored procedures that querys/updates/deletes the user info from the database. I have the following code for example: Execute InsertUsuario ( <dtml-sqlvar username type="string">, <dtml-sqlvar password type="string">, <dtml-sqlvar AUTHENTICATED_USER type="string">, <dtml-sqlvar REMOTE_ADDR type="string"> ) inside a ZSQL Method. When I test this method I get the following traceback: <PRE> Traceback (innermost last): File /export/home/bmatt/iPersonal/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /export/home/bmatt/iPersonal/lib/python/ZPublisher/Publish.py, line 179, in publish File /export/home/bmatt/iPersonal/lib/python/Zope/__init__.py, line 201, in zpublisher_exception_hook (Object: ApplicationDefaultPermissions) File /export/home/bmatt/iPersonal/lib/python/ZPublisher/Publish.py, line 151, in publish File /export/home/bmatt/iPersonal/lib/python/ZPublisher/BaseRequest.py, line 304, in traverse File /export/home/bmatt/iPersonal/lib/python/OFS/Application.py, line 260, in __bobo_traverse__ (Object: ApplicationDefaultPermissions) File /export/home/bmatt/iPersonal/lib/python/ZPublisher/HTTPResponse.py, line 510, in notFoundError NotFound: (see above) </PRE> Can anyone tell me what does this means? TIA /B Bruno Mattarollo <brunomadv(a)ciudad.com.ar> --- Python Powered <http://www.python.org/psa/>

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Zope 2.1 beta download
by Stephan Richter 22 Nov '99

22 Nov '99

Can anyone tell me where I can download Zope 2.1 beta 2 from? stephan -- Stephan Richter iXL - Software Designer and Engineer CBU - Physics, Computer Science and Chemistry Student

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Re: [Zope] properties UI suggestion
by Rik Hoekstra 22 Nov '99

22 Nov '99

Hi Evan, i just downloaded your changed property.dtml file (and the rest). It seems it was somehow (slightly) mutilated in the transfer to zope.org. A new version is appended. It works ok now. Rik <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"> <html lang="en"> <head> <title>Properties</title> <base href="http://www.zope.org/Members/4am/ChangePropertyTypes/properties.dtml/"> </head> <body bgcolor="#FFFFFF" link="#000099" vlink="#555555"> <dtml-var manage_tabs> <dtml-if Principia-Version> <p> <em>You are currently working in version <dtml-var Principia-Version></em> </p> </dtml-if Principia-Version> <P> Properties allow you to assign simple values to Zope objects. </P> <form action="<dtml-var URL1>" method="POST"> <dtml-if propertyMap> <p> The following properties are defined for this item. <dtml-if property_extensible_schema__> To <a href="#addpropform"> add a new property</a>, enter a name, type and value for the new property and click the "Add" button. </dtml-if> To change property values, edit the values and click "Save Changes". </p> <table border="0" cellspacing="0" cellpadding="2"> <dtml-in propertyMap mapping> <tr> <td align="left" valign="top" width="16"> <dtml-if "'d' in _['sequence-item'].get('mode', 'awd')"> <input type="checkbox" name="ids:list" value="<dtml-var id html_quote>" ID="cb-<dtml-var id>"> <dtml-else> </dtml-if> </td> <td align="left" valign="top"> <strong><LABEL FOR="cb-<dtml-var id>"><dtml-var "propertyLabel(id)"></LABEL></strong> </td> <td align="left" valign="top"> <dtml-if "'w' in _['sequence-item'].get('mode', 'awd')"> <dtml-if "type == 'int'"> <input type="text" name="<dtml-var id>:<dtml-var type>" size="35" value="<dtml-if "hasProperty(id)"><dtml-var "'%s' % getProperty(id)" html_quote></dtml-if>"> <dtml-elif "type == 'long'"> <input type="text" name="<dtml-var id>:<dtml-var type>" size="35" value="<dtml-if "hasProperty(id)"><dtml-var "('%s' % getProperty(id))[:-1]" html_quote></dtml-if>"> <dtml-elif "type in ('float', 'date')"> <input type="text" name="<dtml-var id>:<dtml-var type>" size="35" value="<dtml-var "getProperty(id)" html_quote>"> <dtml-elif "type=='string'"> <input type="text" name="<dtml-var id>:string" size="35" value="<dtml-var "getProperty(id)" html_quote>"> <dtml-elif "type=='boolean'"> <input type="checkbox" name="<dtml-var id>:boolean" size="35" <dtml-if "getProperty(id)">CHECKED</dtml-if>> <dtml-elif "type=='tokens'"> <input type="text" name="<dtml-var id>:tokens" size="35" value="<dtml-in "getProperty(id)"><dtml-var sequence-item html_quote> </dtml-in>"> <dtml-elif "type=='text'"> <textarea name="<dtml-var id>:text" rows="6" cols="35"><dtml-var "getProperty(id)" html_quote></textarea> <dtml-elif "type=='lines'"> <textarea name="<dtml-var id>:lines" rows="6" cols="35"><dtml-in "getProperty(id)"><dtml-var sequence-item html_quote><dtml-if sequence-end><dtml-else><dtml-var "'\n'"></dtml-if></dtml-in></textarea> <dtml-elif "type=='selection'"> <dtml-if "_.has_key(select_variable)"> <select name="<dtml-var id>"> <dtml-in "_[select_variable]"> <option <dtml-if "_['sequence-item']==getProperty(id)">SELECTED</dtml-if> ><dtml-var sequence-item html_quote></option> </dtml-in> </select> <dtml-else> No value for <dtml-var select_variable>. </dtml-if> <dtml-elif "type=='multiple selection'"> <dtml-if "_.has_key(select_variable)"> <select name="<dtml-var id>:list" multiple size="<dtml-var "_.min(7, _.len(_[select_variable]))">"> <dtml-in "_[select_variable]"> <option<dtml-if "_['sequence-item'] in getProperty(id)"> SELECTED</dtml-if >><dtml-var sequence-item html_quote></option> </dtml-in> </select> <dtml-else> No value for <dtml-var select_variable>. </dtml-if> <dtml-else> <em>Unknown property type</em> </dtml-if> <dtml-else> <table border="1"> <tr><td><dtml-var "getProperty(id)" html_quote></td></tr> </table> </dtml-if> </td> <td align="left" valign="top"> <dtml-if "'d' in _['sequence-item'].get('mode', 'awd')"> <select name="&dtml-id;-type"> <dtml-in expr="('boolean', 'date', 'float', 'int', 'lines', 'long', 'string' , 'text', 'tokens', 'selection', 'multiple selection')"> <dtml-let SELECTED="('', 'SELECTED')[type==_['sequence-item']]"> <option &dtml-SELECTED;>&dtml-sequence-item;</option> </dtml-let> </dtml-in> </select> <dtml-else>(&dtml-type;) </dtml-if> </td> </tr> </dtml-in> <tr> <td align="left" valign="top" colspan="2"> </td> <td align="left" valign="top" colspan="2"> <input type="submit" name="manage_editProperties:method" value="Save Changes"> <input type="submit" name="manage_delProperties:method" value="Delete"> <input type="submit" name="manage_propertyTypeForm:method" value="Change Types"> </td> </tr> </table> <dtml-else> <p> There are currently no properties defined for this item. <dtml-if property_extensible_schema__> To add a property, click the "Add..." button. </dtml-if> </p> </dtml-if> </form> <dtml-if property_extensible_schema__> <a name="addpropform"> <form action="<dtml-var URL1>/manage_addProperty" method="POST"> <p> To add a new property, enter a name, type and value for the new property and click the "Add" button. For "selection" and "multiple selection" properties enter the name of a selection variable in the "Value" field. The selection variable is a property or method that returns a list of strings from which the selection(s) can be chosen. </p> <table> <tr> <th align="left" valign="top">Id</th> <td align="left" valign="top"><input type="text" name="id" size="20"></td> <th align="left" valign="top">Type</th> <td align="left" valign="top"> <select name="type"> <option>boolean</option> <option>date</option> <option>float</option> <option>int</option> <option>lines</option> <option>long</option> <option SELECTED>string</option> <option>text</option> <option>tokens</option> <option>selection</option> <option>multiple selection</option> </select> </td> </tr> <tr> <th align="left" valign="top">Value</th> <td colspan=2 align="left" valign="top"> <input type="text" name="value" size="30"> </td> <td align="right" valign="top"> <input type=type="submit" value=" Add "> </td> </tr> </table> </form> </dtml-if> </body> </html>

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RE: [Zope] ZCatalog: Non english text
by Michel Pelletier 22 Nov '99

22 Nov '99

> -----Original Message----- > From: technews(a)egsx.com [mailto:technews@egsx.com] > Sent: Monday, November 22, 1999 2:00 PM > To: Zope > Subject: Re: [Zope] ZCatalog: Non english text > > > Hi, > > I used ZCatalog to index an object I created, which contains > a site_index, > and site_description properties. These properties were > indexed and are > searchable hence when I do the following search in DHTML > > <dtml-in "Catalog.searchResults(site_title='computer')"> > <a href="/<dtml-var "Catalog.getpath(data_record_id_)">"> > <dtml-var site_title></a><br> > <dtml-var site_description> <p> > </dtml-in> > > I do get the correct results. However when I enter a > non-english word, > which is indexed as well, I do not get anything else. I did hear that > someone tries using ZCatalog with chinease and were unscussesful, has > there been any changes?? With Zope 2.1, you can specify a locale on the command line '-L'. Chinese is a whole different story because it's a multi-byte character set, and not even Python has worked out what the story on that is. Most european languages work with locale. > Also what are the chances that ZCatalog can allow us to > include a function > to be used when indexing and searching of the objects, so we > can apply any > word tranformation such as suffix removal i.e. computing, computers, > computer, computed, can be indexed as comput if I choose to. > What I mean > is that we specify a method (possibly external) that will do what is > needed and the resulting word can be indexed by ZCatalog, and the same > method is called to transform the input word usinf the same > method when > searching that catalog. The catalog allready stems words just like you have here. In future releases, there will be an interface defined where you can create your own stemming methods. -Michel

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RE: [Zope] Missing views after creating a ZClass
by Brian Lloyd 22 Nov '99

22 Nov '99

> I'm in a little trouble: I created a ZClass based upon > DTMLDocument and reduced its number of views (I wanted to have > just one sheet with some property fields and another view to > display a method). Now every DTML Document on my site is missing > the standard edit view (editing a DTMLDoc starts with the > upload view). This a known ZClass bug - we're taking a look at it. I want the 2.1.0 final release to have the fix for this one. Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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ZCatalog: searching by date
by Alice Gutman 22 Nov '99

22 Nov '99

Hi, I'm part of a student group at UC Berkeley, and I'm trying to use ZCatalog to allow users to search our site by keyword and date modified. But for some reason, the date field seems to be ignored when a search is conducted. Since the keyword part works just fine and I can't find anything wrong with my code, I am stumped. Does anyone have any suggestions? Here is my search_form method, in case that is the problem after all:  <form action="report" method="get"> <h2></h2> Enter query parameters:<br><table> <tr><th>Search for text:</th> <td><input name="raw" width=30 value=""></td></tr> <tr><th>Modified since: </th> <td><input type="hidden" name="date_usage" value="range:min"> <select name="date:date"> <option value="">Ever</option> <option value="">Yesterday</option> <option value="">Last Week</option> <option value="">Last Month</option> <option value="">Last Year</option> </select></td></tr> <tr><td colspan=2 align=center> <input type="SUBMIT" name="SUBMIT" value="Submit Query"> </td></tr> </table> </form>  Thanks in advance, Alice

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RE: [Zope] Where's Data from Instances/Installations???
by Michel Pelletier 22 Nov '99

22 Nov '99

> -----Original Message----- > From: Harry [mailto:mail-zope@fizbin.com] > Sent: Monday, November 22, 1999 11:39 AM > To: Michel Pelletier > Subject: Re: [Zope] Where's Data from Instances/Installations??? > > > on 11/22/1999 7:46 AM, Michel Pelletier at michel(a)digicool.com wrote: > > > Yes, just restart Zope to get the changes. > > Thanks, but I was also wondering: > > "My question, though, is **WHERE** is the data for EXISTING > instances kept, and is it changeable?" The data for existing instances is kept in memory. It is not changable. Zope loads the files off the filesystem for existing instances when Zope is started. so to change the values for existing instances, change the files on the filesystem, and restart Zope. Alternativly, you can run Zope in debug mode '-D' and DTML file objects will be reloaded on every hit. -Michel

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Draft howto - Using Keyword Indexes in ZCatalogs
by Alexandre Ratti 22 Nov '99

22 Nov '99

Hello, I uploaded a draft howto about keyword indexes. It describes how to use the new "Keyword" index type in a simple keyword search form. (This new index type is available in ZCatalogs since Zope 2.1b1.) You can read it here: <http://www.zope.org/Members/AlexR/KeywordIndexes/>. Feel free to send me your feedback. Cheers. Alexandre

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