Re: [CDBI] Two has_a Relationships to the Same Table?
"Mertel, Mark" <[email protected]> Wed, 23 Apr 2008 06:13:14 -0700
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Did you use the mappings method? How about including your code snippet.
=20
---
Mark Mertel
TEK systems
Desk: 425.288.7214
Mobile: 206.353.2663
=20
________________________________
From: classdbi-bounces-uVLvtXkw1RPgjt3iqB9Uk5F3r5kRpbQ7rE5yTffgRl4@public.gmane.org
[mailto:classdbi-bounces-uVLvtXkw1RPgjt3iqB9Uk5F3r5kRpbQ7rE5yTffgRl4@public.gmane.org] On Behalf Of Dave
Mabe
Sent: Wednesday, April 23, 2008 6:06 AM
To: ClassDBI-uVLvtXkw1RPgjt3iqB9Uk5F3r5kRpbQ7rE5yTffgRl4@public.gmane.org
Subject: [CDBI] Two has_a Relationships to the Same Table?
=20
I've got one table (A) with a has_a relationship to another table (B).
I'd like to add another column to table A that is the foreign key for a
record in table B.
I tried to simply add the column and then put another has_a relationship
in the class for table A, but I get "Column does not exist" errors. I
tried adding the new column name as a TEMP column in the class for table
B and also adding it as a table_alias for table B both of which give the
same error.
Any idea how to do this? Is it possible to set up another class for
table B for the second relationship (still pointing to the data in the
same table)?
TIA
--=20
Dave Mabe
StockTickr - Trader Performance Analysis
We Make Traders More Profitable
http://www.stocktickr.com/
Every trade I make is blogged:
http://blog.stocktickr.com/=20
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<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Did you use the mappings method? =
How about
including your code snippet.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<p class=3DMsoAutoSig><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'>---<o:p></o:p></span></font></p>
<p class=3DMsoAutoSig><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'>Mark =
Mertel<o:p></o:p></span></font></p>
<p class=3DMsoAutoSig><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'>TEK =
systems<o:p></o:p></span></font></p>
<p class=3DMsoAutoSig><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'>Desk: =
425.288.7214<o:p></o:p></span></font></p>
<p class=3DMsoAutoSig><st1:City w:st=3D"on"><st1:place w:st=3D"on"><font =
size=3D3
color=3Dnavy face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt;color:navy'>Mobile</span></font></st1:place></s=
t1:City><font
color=3Dnavy><span style=3D'color:navy'>: =
206.353.2663<o:p></o:p></span></font></p>
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<p class=3DMsoNormal><b><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font =
size=3D2
face=3DTahoma><span style=3D'font-size:10.0pt;font-family:Tahoma'>
classdbi-bounces-uVLvtXkw1RPgjt3iqB9Uk5F3r5kRpbQ7rE5yTffgRl4@public.gmane.org
[mailto:classdbi-bounces-uVLvtXkw1RPgjt3iqB9Uk5F3r5kRpbQ7rE5yTffgRl4@public.gmane.org] <b><span =
style=3D'font-weight:
bold'>On Behalf Of </span></b>Dave Mabe<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Wednesday, April =
23, 2008
6:06 AM<br>
<b><span style=3D'font-weight:bold'>To:</span></b>
ClassDBI-uVLvtXkw1RPgjt3iqB9Uk5F3r5kRpbQ7rE5yTffgRl4@public.gmane.org<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> [CDBI] Two has_a
Relationships to the Same Table?</span></font><o:p></o:p></p>
</div>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>I've got one table (A) with a has_a relationship to another =
table
(B). I'd like to add another column to table A that is the foreign =
key
for a record in table B.<br>
<br>
I tried to simply add the column and then put another has_a relationship =
in the
class for table A, but I get "Column does not exist" =
errors. I
tried adding the new column name as a TEMP column in the class for table =
B and
also adding it as a table_alias for table B both of which give the same =
error.<br>
<br>
Any idea how to do this? Is it possible to set up another class =
for table
B for the second relationship (still pointing to the data in the same =
table)?<br>
<br>
TIA<br clear=3Dall>
<br>
-- <br>
Dave Mabe<br>
StockTickr - Trader Performance Analysis<br>
We Make Traders More Profitable<br>
<a =
href=3D"http://www.stocktickr.com/">http://www.stocktickr.com/</a><br>
<br>
Every trade I make is blogged:<br>
<a href=3D"http://blog.stocktickr.com/">http://blog.stocktickr.com/</a> =
<o:p></o:p></span></font></p>
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