This is the part of the original mail which is missing in the mail archive.
johnf wrote:
> -- snip --
>
> Below I have created a small application. I hate the UI in this example. So
> would some kind reader post a better UI. The code creates a one to many
> relation between a customer table and the customer contacts table. I have
> added several buttons and extra lines to create the child relation and we
> will go over that code in the next installment. So far all we have done is
> discuss the connection and added a bizObject to our code. Next time we will
> discuss what steps I took to create the child relation and what Dabo provides
> to help the developer pass SQL statements to the database engine.
>
> #!/usr/bin/env python
> # -*- coding: utf-8 -*-
> import os
> import sys
> import dabo
> import dabo.dEvents as dEvents
> import dabo.dException as dException
> dabo.ui.loadUI('wx')
> #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
>
> def validateRecord(self):
> """Returning anything other than an empty string from
> this method will prevent the data from being saved.
> """
> ret = ""
> # Add your business rules here.
> return ret
>
>
>
>
> #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")
>
>
> def validateRecord(self):
> """Returning anything other than an empty string from
> this method will prevent the data from being saved.
> """
> ret = ""
> # Add your business rules here.
> return ret
>
> class CustomerPanel(dabo.ui.dPanel):
> def afterInit(self):
> self.Sizer=vs=dabo.ui.dSizer('h')
> gs = dabo.ui.dGridSizer(MaxCols=4,HGap=3, VGap=3)
> gs.append(dabo.ui.dLabel(self, Caption="Cust #"),
> halign="right")
> gs.append(dabo.ui.dTextBox(self,
> RegID="txtCustomerID",TextLength =
> 10,DataSource ="public.arcustomer", DataField = "custno"), "expand",
> colSpan=3)
> gs.append(dabo.ui.dLabel(self, Caption="Address"),
> halign="right")
> gs.append(dabo.ui.dTextBox(self, RegID="txtAddress1",TextLength
> =
> 35,DataSource ="public.arcustomer", DataField = "address1"), "expand",
> colSpan=3)
> gs.append(dabo.ui.dLabel(self, Caption=""), halign="right")
> gs.append(dabo.ui.dTextBox(self, RegID="txtAddress2",TextLength
> =
> 35,DataSource ="public.arcustomert", DataField = "address2"), "expand",
> colSpan=3)
> gs.append(dabo.ui.dLabel(self, Caption="City"), halign="right")
> gs.append(dabo.ui.dTextBox(self, RegID="txtCity",DataSource
> ="public.arcustomer", DataField = "city"), "expand", colSpan=3)
> gs.append(dabo.ui.dLabel(self, Caption="Country"),
> halign="right")
> gs.append(dabo.ui.dTextBox(self, RegID="txtCountry1",DataSource
> ="public.arcust", DataField = "country"), "expand", colSpan=3)
> gs.append(dabo.ui.dLabel(self, Caption="State"), halign="right")
> gs.append(dabo.ui.dTextBox(self,
> RegID="txtSateID",ForceCase='upper',TextLength=2,DataSource
> ="public.arcustomer", DataField = "state"))
> gs.append(dabo.ui.dLabel(self, Caption="Zip"), halign="right")
> gs.append(dabo.ui.dTextBox(self,
> RegID="txtZipD",TextLength=10,DataSource
> ="public.arcustomer", DataField = "czip"), "expand")
> vs.append(gs,0,'x')
>
>
> class ContactsPanel(dabo.ui.dPanel):
> def afterInit(self):
> self.Sizer = dabo.ui.dSizer("v")
> hs=dabo.ui.dSizer("h")
> contactGrid =
> dabo.ui.dGrid(self,RegID="contgridID",AlternateRowColoring
> =True,ColumnCount=6,SelectionMode = "Row",Editable = True,MovableColumns =
> False)
>
> #self.contactGrid.bindEvent(dabo.dEvents.GridCellSelected,self.onGridCellSelected)
> contactGrid.DataSource = "public.contacts"
> contactGrid.Columns[0].Caption ="Title"
> contactGrid.Columns[0].DataField = "title"
> contactGrid.Columns[1].Caption ="First"
> contactGrid.Columns[1].DataField = "firstname"
> contactGrid.Columns[2].Caption ="Last"
> contactGrid.Columns[2].DataField = "lastname"
> contactGrid.Columns[3].Caption ="Email"
> contactGrid.Columns[3].DataField = "email"
> contactGrid.Columns[4].Caption ="Phone"
> contactGrid.Columns[4].DataField = "phone"
> contactGrid.Columns[5].Caption ="Continent"
> contactGrid.Columns[5].DataField = "continent"
> hs.append(contactGrid,1,'x')
> self.Sizer.append(hs,1,'x')
>
>
> class MainForm(dabo.ui.dForm):
> def afterInit(self):
> self.Sizer=vs=dabo.ui.dSizer('v')
> custPanel=CustomerPanel(self)
> vs.append(custPanel,1,'x')
> vs.appendSpacer(8)
> hs= dabo.ui.dSizer('h')
> hs.append(dabo.ui.dButton(self,
> Caption="First",OnHit=self.first),0)
> hs.append(dabo.ui.dButton(self,
> Caption="Next",OnHit=self.next),0)
> hs.append(dabo.ui.dButton(self,
> Caption="Prior",OnHit=self.prior),0)
> hs.append(dabo.ui.dButton(self,
> Caption="Last",OnHit=self.last),0)
> vs.append(hs)
> vs.appendSpacer(8)
> contPanel=ContactsPanel(self)
> vs.append(contPanel,2,'x')
> self.layout()
> self. requery()
>
>
> def first(self,evt):
> self.super()
>
> def next(self,evt):
> self.super()
>
> def prior(self,evt):
> self.super()
>
> def last(self,evt):
> self.super()
>
> def createBizobjs(self):
> self.Application.addConnectFile("tutorial.cnxml")
> self.Connection =
> self.Application.getConnectionByName("tutorial")
>
> publicarcustBizobj = PublicarcustBizobj(self.Connection)
> self.addBizobj(publicarcustBizobj)
>
> publiccontactsBizobj = PubliccontactsBizobj(self.Connection)
> self.addBizobj(publiccontactsBizobj)
> publicarcustBizobj.addChild(publiccontactsBizobj)
>
>
> if __name__ == "__main__":
> app = dabo.dApp()
> app.BasePrefKey = "bizObjTutor"
> app.setAppInfo("appName", "bizObject Tutorial ")
> app.MainFormClass = MainForm
> app.start()
>
> As always if I have errors point them out. Better yet provide the fix.
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