On Tuesday 19 January 2010 05:12:55 pm jvandal wrote:
> I created a pillBizobj . I have a file pillBizobj that contains the record
> layout. In the edit dForm I have the statements that connect the database.
> I then created the child new_prescriptionsBizobj and havae a file
> new_prescriptionsBizobj.py that contains the record layout. In the dFor
> edit of createBizobj I have added the connection statements.
>
> I see in the Using Data Environment screencast that it describes one Bizobj
> that describes both the parent and the child records.
> What gives?
I am not aware of a screencast named "Using Data Environment". So I can't
directly comment.
However, there is no way to use one bizobj and setup a parent child
relationship. See below of example code of a parent child relationship.
Note that the parent is the customer class and the child is the contacts
class. A customer (maybe a company) can have many contacts - a one to many
relationship. In the child (the contact class) there are two lines of the
class that describes the relation so Dabo can maintain the relationship.
self.LinkField = "fk_arcust"
self.ParentLinkField ="pkid"
So when you move the customer record pointer Dabo will retrieve the contacts
data related to the customer.
> #the contact table
> class PubliccontactsBizobj(dabo.biz.dBizobj):
> def afterInit(self):
> self.DataSource = "public.contacts"
> self.KeyField = "pkid"
> self.addFrom("public.contacts")
> self.addField("firstname")
> self.addField("phone")
> self.addField("pkid")
> self.addField("lastname")
> self.addField("title")
> self.addField("custno")
> self.addField("continent")
> self.addField("email")
> self.addField("cont_note")
> self.addField("fk_arcust")
> self.NonUpdateFields=["pkid"]
> self.LinkField = "fk_arcust"
> self.ParentLinkField ="pkid"
> self.FillLinkFromParent = True
> #the customer table
> class PublicarcustBizobj(dabo.biz.dBizobj):
> def afterInit(self):
> self.DataSource = "public.arcustomer"
> self.addFrom("public.arcustomer")
> self.KeyField = "pkid"
> self.addField("czip")
> self.addField("city")
> self.addField("pkid")
> self.addField("state")
> self.addField("company")
> self.addField("address1")
> self.addField("address2")
> self.addField("country")
> self.addField("custno")
Johnf
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