[PyQt] use dip with a classic parent child relationship
johnf at jfcomputer.com
Wed Jan 15 21:09:30 GMT 2014
On 01/15/2014 11:14 AM, John Fabiani wrote:
> On 01/15/2014 10:57 AM, Phil Thompson wrote:
>> On 15-01-2014 6:38 pm, John Fabiani wrote:
>>> I have reviewed the doc's and the examples (well at least once). So
>>> far it looks like alot of the automatic stuff is done and lot's of
>>> ways to deal with making changes.
>>> But I don't see the an example of the classic parent ->childl
>>> ->grandchild model. The standard invoice header with invoice line
>>> items where there are two tables used.
>>> How is that done? I did not gather the info from the doc (or I
>>> missed it).
>> I'm not sure I understand the question.
>> If you are expecting dip to automatically create a usable GUI for you
>> for an arbitrary model then you are going to be disappointed.
>> Automatically created GUIs are Ok so long as they are kept simple -
>> for things like dialogs or wizards, or parts of a bigger GUI.
>> PyQt mailing list PyQt at riverbankcomputing.com
> No nothing to do with the GUI (view). But how to associate a table
> with a child table. The classic is the you have a grid at the top of
> a form with all the invoices associated with a customer (in the
> grid). Below you have a grid with all the line items associated with
> the invoice (header).
> In this case the parent is the customer record, the child is the
> invoice headers, and the grandchild is the line items.
> one to many to many relationship.
> I'll guess and suggest the you create some sort of trigger action in
> the model? Then somehow you have to write a controller???? Or is all
> of that done in some auto way?
I kept reading and maybe I have discovered that the model is not
complete. Meaning that it does not have a way to save to a persistent
database? And I got that from the roadmap. So my question on
parent->child didn't make sense due to the current state of dip. Is
that correct. If so is there a spec you have developed that I might
follow to develop the code.
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