[Zope3-Users] Re: Newbie Question

[Edward Muller]

Thanks.

The book is on order with amazon. I just want to get as much done as  
possible while I'm at pycon and away from customers ... and  
motivated ... etc.

On Feb 23, 2007, at 4:43 PM, Martin Aspeli wrote:

> Edward Muller wrote:
>> I've done Zope2 stuff in the past, including writing Zope2 Products.
>> We are working on new hosting software and have decided to use  
>> Zope 3.
>> So we're defining our interfaces and have started to define  
>> classes  based on those interfaces and I have a question...
>> The simple todo app (http://worldcookery.com/files/jeffshell-todo/  
>> step1.html) shows the Todo class having three attributes   
>> (description, details, done). These are all defined in the  
>> interface  using various zope.schema definitions.
>> But ...
>> The Boring product (http://products.nidelven-it.no/zope3_boring/)   
>> does the same thing in the interface with a title attribute. But  
>> when  it gets to the class definition it uses:
>> def __init__(self, title='Default boring title'):
>>    self.title = title
>> The later is more familiar to me coming from Zope 2. Which is  
>> right?  If they are both right, which is *more* right wrt Zope  
>> 3 ... and why?
>
> They are both right, and it doesn't matter.
>
> The interface says "when you have an instance of this object, you  
> can expect there to be a 'title' attribute". How it got there is  
> not that important.
>
> By the way, if you're starting with Zope 3, get Philipp von  
> Weitershausen's book Web Component Development with Zope 3  
> (www.worldcookery.com). It'll make a lot of this stuff much more  
> clear.
>
> Martin
>
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Edward Muller
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