Re: [Zope3-Users] Nested lists- iteration over non-sequence
Daniel M wrote: Hi Kevin, Thanks for the help! I've studied your example at http://zope3demos.googlecode.com/svn/tags/zope3demos-200610-21/otherdemos/objectsofobjects2/ but I don't see how I could extend this example into a List of List. Suppose I want to change your IPerson to include a list, such as: class IPerson(interface.Interface): first = schema.TextLine(title=ufirstname) last = schema.TextLine(title=ulastname) names = schema.List(title=u'Names', value_type=schema.TextLine(title=unames), required=False) I can't figure out how to create to modify the widgets so that AddressBook will display correctly... I keep getting the Iteration over non sequence exception. Hi Daniel, Taking the error at face-value, the following may (or not) help: names = schema.List(title=u'Names', value_type=schema.TextLine(title=unames), required=False, default=[]) ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Nested lists- iteration over non-sequence
Daniel M escribió: Hello, I'm new to Zope, and using Zope 3.3. I have managed to get a simple site running. I am having trouble getting the web interface to let me edit an object that contains a list, where the type of values in the list, is an interface that also holds a list. I can’t get this “list inside a list” setup to work correctly. In my example, I have a Person object that contains a list of PersonInfo objects, where each PersonInfo contains a list of names. Do I understand correctly that for each person you want to store a list of PersonInfos (say, his/her friends)? I suggest considering to make IPerson/Person a descendant of IContainer/BTreeContainer type and remove the_list attribute. Also maybe the same should be done for IPersonInfo/PersonInfo If you want to stick to your current design - I think (but not sure) you should use CustomSequenceWidgetFactory (or CustomWidgetFactory?) to create a widget for your object. I would change your code a bit, compare to your one (of course I did not check if it works, just a concept - no warranty ;) ) class IPersonInfo(interface.Interface): names = schema.List( title=unames, unique=False, value_type=schema.TextLine(title=u'name') ) class IPerson(IContainer): ID = schema.TextLine( title=u'ID', description=u'Persons ID code') contains(IPersonInfo) class PersonInfo(persistent.Persistent): interface.implements(IPersonInfo) def __init__(self): self.names = persistent.list.PersistentList() class Person(BTreeContainer): # or OrderedContainer if you want to be able to preserve items' order interface.implements(IPerson) ID = 1-2-3 def __init__(self): super(Person,self).__init__() #it's important to call BTreeContainer constructor configure.zcml doesn’t do anything unusual, it sets up the views to use my custom widgets and sets up the edit views and security. Regards and thanks for your help! Regards! ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Nested lists- iteration over non-sequence
Hi, Yes, one solution is custom widgets. Although I don't have a List of List example, I do have a List of Object example. It uses formlib, CustomWidgetFactory, ListSequenceWidget and ObjectWidget http://zope3demos.googlecode.com/svn/tags/zope3demos-200610-21/otherdemos/objectsofobjects2/ Project at http://zope3demos.googlecode.com/ Kevin Smith - Original Message From: Daniel M [EMAIL PROTECTED] To: zope3-users@zope.org Sent: Friday, October 20, 2006 2:47:36 PM Subject: [Zope3-Users] Nested lists- iteration over non-sequence Hello, I'm new to Zope, and using Zope 3.3. I have managed to get a simple site running. I am having trouble getting the web interface to let me edit an object that contains a list, where the type of values in the list, is an interface that also holds a list. I can’t get this “list inside a list” setup to work correctly. In my example, I have a Person object that contains a list of PersonInfo objects, where each PersonInfo contains a list of names. When I enter the view for Person (based on EditForm), it displays an edit form as I would expect. However, when I try to add a PersonInfo to the list via the interface, an exception is raised: “TypeError: iteration over non-sequence” (The full traceback is over 6 pages long, so I won’t post it, but it does mention “sequencewidget” many times). I've tried some variations to narrow down the problem: *If I change PersonInfo to hold just a string instead of a list, it works! *If I change Person to hold just a single PersonInfo instead of a list, it works! * Therefore, it seems like my Zope site is set up OK, but for some reason Lists of objects with Lists raise an exception. Am I missing something? Maybe I have to write some custom widget to get around this? Is this possibly a known problem? The code: ** People.py * class IPersonInfo(interface.Interface): names = schema.List( title=unames, unique=False, value_type=schema.TextLine(title=u'name') ) class IPerson(interface.Interface): ID = schema.TextLine( title=u'ID', description=u'Persons ID code') the_list = schema.List( title=uPersonInfo list, unique=False, value_type=schema.Object(IPersonInfo)) class PersonInfo(persistent.Persistent): interface.implements(IPersonInfo) def __init__(self): self.names = persistent.list.PersistentList() def PersonInfoWidget(context,obj,request): return ObjectWidget(context, request, PersonInfo) class Person(persistent.Persistent): interface.implements(IPerson) ID = 1-2-3 def __init__(self): self.the_list = persistent.list.PersistentList() class AutoEditView(form.EditForm): form_fields = form.Fields(IPerson) class PersonInfoView(form.EditForm): form_fields = form.Fields(IPersonInfo) ** end People.py * configure.zcml doesn’t do anything unusual, it sets up the views to use my custom widgets and sets up the edit views and security. Regards and thanks for your help! -- Daniel M [EMAIL PROTECTED] -- http://www.fastmail.fm - Send your email first class ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
[Zope3-Users] Nested lists- iteration over non-sequence
Hello, I'm new to Zope, and using Zope 3.3. I have managed to get a simple site running. I am having trouble getting the web interface to let me edit an object that contains a list, where the type of values in the list, is an interface that also holds a list. I cant get this list inside a list setup to work correctly. In my example, I have a Person object that contains a list of PersonInfo objects, where each PersonInfo contains a list of names. When I enter the view for Person (based on EditForm), it displays an edit form as I would expect. However, when I try to add a PersonInfo to the list via the interface, an exception is raised: TypeError: iteration over non-sequence (The full traceback is over 6 pages long, so I wont post it, but it does mention sequencewidget many times). I've tried some variations to narrow down the problem: *If I change PersonInfo to hold just a string instead of a list, it works! *If I change Person to hold just a single PersonInfo instead of a list, it works! * Therefore, it seems like my Zope site is set up OK, but for some reason Lists of objects with Lists raise an exception. Am I missing something? Maybe I have to write some custom widget to get around this? Is this possibly a known problem? The code: ** People.py * class IPersonInfo(interface.Interface): names = schema.List( title=unames, unique=False, value_type=schema.TextLine(title=u'name') ) class IPerson(interface.Interface): ID = schema.TextLine( title=u'ID', description=u'Persons ID code') the_list = schema.List( title=uPersonInfo list, unique=False, value_type=schema.Object(IPersonInfo)) class PersonInfo(persistent.Persistent): interface.implements(IPersonInfo) def __init__(self): self.names = persistent.list.PersistentList() def PersonInfoWidget(context,obj,request): return ObjectWidget(context, request, PersonInfo) class Person(persistent.Persistent): interface.implements(IPerson) ID = 1-2-3 def __init__(self): self.the_list = persistent.list.PersistentList() class AutoEditView(form.EditForm): form_fields = form.Fields(IPerson) class PersonInfoView(form.EditForm): form_fields = form.Fields(IPersonInfo) ** end People.py * configure.zcml doesnt do anything unusual, it sets up the views to use my custom widgets and sets up the edit views and security. Regards and thanks for your help! -- Daniel M [EMAIL PROTECTED] -- http://www.fastmail.fm - Send your email first class ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
