Hi John.
Platform: Win
Python Version: 2.4.4 on win32
Dabo Version: Version 0.8a; Revision
UI Version: 2.6.3.3 on wxMSW
I don't think I'm being dense. I took a couple days off to clear my head
and came back to this. Below is my code and the form .cdxml file, which
still don't work as I expect, with comments.
To summarize:
I can make a grid work just like it does in the Wiki How-To for populating
a grid. That strongly suggests to me that I'm doing everything right with
regard to setting up the database in MySQL, creating a connection in Dabo,
and accessing the proper biz object, DataSource, and fields.
So then, insofar as possible, I use the exact same database, table, and
Dabo code to bind a textbox to a single field in in my table and populate
it by requesting 1 record, and it doesn't work. Instead, the GRID shows the
one row I want, and the textbox shows nothing. If I get rid of the grid and
just do the textbox thing with everything else the same, it doesn't do
anything at all.
As best I can tell, it should work. Please try to show me the exact point
where I'm wrong.
Thanks.
Ken Dibble
www.stic-cil.org
## *!* ## Dabo Code ID: dButton-dForm
def onHit(self, evt):
# Code from the wiki How-To:
# This connection works fine, as the rest of this code
# demonstrates.
self.Form.Application.addConnectFile("C:\DaboProjects\MyMusic\mymusic.cnxml")
# Code from the wiki How-To:
conn = self.Form.Application.getConnectionByName("main")
# Code from the wiki How-To:
biz = dabo.biz.dBizobj(conn)
# Code from the wiki How-To:
# These items are correct, as the grid will demonstrate.
biz.DataSource = "musSongs"
biz.KeyField = "pkid"
# Code from the wiki How-To (don't know why; it doesn't
# seem to serve any purpose, like giving me a form-level
# reference to the biz object that I can use, but if
# I comment it out, the grid doesn't populate):
# Add it to the form's collection of bizobj references
self.Form.addBizobj(biz)
# Code from the wiki How-To:
# These items are correct, as the grid will demonstrate.
# Now set up the fields
biz.addField("pkid")
biz.addField("songname")
biz.addField("compdate")
# Code from the wiki How-To:
# Run the query
biz.requery()
# Code from the wiki How-To (works perfectly; if I
# don't enter a number in the keyBox textbox, all of my
# songs appear in the grid. This indicates that:
# 1. The MySQL database is configured properly for
# Dabo.
# 2. The connection is configured properly in Dabo.
# 3. I'm referring to the proper fields and DataSource.
# 4. There is data in the table.)
# The grid may not exist yet; it may be created after
# this method is run. So use 'callAfter()' to delay
# populating the grid until we know it is ready.
dabo.ui.callAfter(self.Form.populateGrid)
# Now try to show just one song in the thisSong textbox,
# assuming the user entered a number in the keyBox. If
# s/he didn't, the following code doesn't do anything
# that I can see.
myPK = self.Form.keyBox.Value
# Assuming I put 3 in the keyBox,Prints 3, as I'd expect.
print myPK
biz.setWhereClause("musSongs.pkid = " + myPK)
# Assuming I put 3 in the keyBox, this prints
# "musSongs.pkid = 3", also as I'd suspect.
# This tells me that the query is going to be correct.
print biz._CurrentCursor.sqlManager._whereClause
biz.requery()
# At this point, the grid shows one row--the row I
# wanted--but the thisSong texbox shows nothing.
dabo.ui.callAfter(self.Form.showSong)
## *!* ## Dabo Code ID: dForm-top
def afterInit(self):
# Even though I do this again in the button's onHit,
# I do it here because the form will not run if there's
# no code in this method.
self.Application.addConnectFile("C:\DaboProjects\MyMusic\mymusic.cnxml")
def populateGrid(self):
# Just like in the Wiki How-To:
self.gridKen.DataSource = "musSongs"
def showSong(self):
# Just like in the Wiki How-To except it's a dTextBox
# instead of a dGrid.
self.Form.thisSong.DataSource = "musSongs"
Here's the .cdxml file for the form:
<?xml version="1.0" encoding="utf-8" standalone="no"?>
<dForm code-ID="dForm-top" Caption="Songs" Top="90" Height="547"
Width="682" designerClass="DesForm" UseSizers="True" Left="262">
<dSizer SlotCount="4" designerClass="LayoutSizer"
Orientation="Vertical">
<dGrid ColumnCount="3" RegID="gridKen"
SelectionMode="Cell" designerClass="controlMix" sizerInfo="{'BorderSides':
['All'], 'Proportion': 1, 'HAlign': 'Left', 'VAlign': 'Top', 'Border': 0,
'Expand': True}">
<dColumn HeaderFontItalic="False"
FontUnderline="False" Width="150" FontFace="Arial" HeaderBackColor="None"
FontBold="False" HeaderVerticalAlignment="None" Editable="False"
HeaderFontBold="True" ListEditorChoices="[]" FontItalic="False"
Expand="False" HeaderFontSize="9" Sortable="True" HeaderFontFace="Arial"
Caption="ID" designerClass="controlMix" Order="0" FontSize="9"
HeaderForeColor="None" Searchable="True" HeaderFontUnderline="False"
HeaderHorizontalAlignment="None" HorizontalAlignment="Left (Automatic)"
DataField="pkid" VerticalAlignment="Top"></dColumn>
<dColumn HeaderFontItalic="False"
FontUnderline="False" Width="150" FontFace="Arial" HeaderBackColor="None"
FontBold="False" HeaderVerticalAlignment="None" Editable="False"
HeaderFontBold="True" ListEditorChoices="[]" FontItalic="False"
Expand="False" HeaderFontSize="9" Sortable="True" HeaderFontFace="Arial"
Caption="Song" designerClass="controlMix" Order="10" FontSize="9"
HeaderForeColor="None" Searchable="True" HeaderFontUnderline="False"
HeaderHorizontalAlignment="None" HorizontalAlignment="Left (Automatic)"
DataField="songname" VerticalAlignment="Top"></dColumn>
<dColumn HeaderFontItalic="False"
FontUnderline="False" Width="150" FontFace="Arial" HeaderBackColor="None"
FontBold="False" HeaderVerticalAlignment="None" Editable="False"
HeaderFontBold="True" ListEditorChoices="[]" FontItalic="False"
Expand="False" HeaderFontSize="9" Sortable="True" HeaderFontFace="Arial"
Caption="Date" designerClass="controlMix" Order="20" FontSize="9"
HeaderForeColor="None" Searchable="True" HeaderFontUnderline="False"
HeaderHorizontalAlignment="None" HorizontalAlignment="Left (Automatic)"
DataField="compdate" VerticalAlignment="Top"></dColumn>
</dGrid>
<dTextBox RegID="keyBox" sizerInfo="{'BorderSides':
['All'], 'Proportion': 0, 'HAlign': 'Left', 'VAlign': 'Top', 'Border': 3,
'Expand': False}" designerClass="controlMix"></dTextBox>
<dButton code-ID="dButton-dForm" Caption="Button"
sizerInfo="{'BorderSides': ['All'], 'Proportion': 0, 'HAlign': 'Left',
'VAlign': 'Middle', 'Border': 4, 'Expand': False}"
designerClass="controlMix"></dButton>
<dTextBox RegID="thisSong" sizerInfo="{'BorderSides':
['All'], 'Proportion': 0, 'HAlign': 'Left', 'VAlign': 'Top', 'Border': 3,
'Expand': False}" designerClass="controlMix" Name="dTextBox1"></dTextBox>
</dSizer>
</dForm>
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