Re: CSP Form - Create Referenced Object ?

[Bill McCormick]

You write your own code. You will need to submit the form or read the 
form via javascript. Pass the data to a function that creates the 
objects and inserts / modifies data as needed. If you look at the Devcon 
presentation I did this year you will see we were doing pretty much this 
managing a collection of items in a shopping cart.

Dipl.-Ing. Werner Riegler wrote:
hi again,
there is an additional similar question i would like to ask you:
how to to this - a class called Campaign - a class called CampaignContents
(for n:m relations) - and a class called Content
 Class EMEM.Campaign Extends EMEM.NLSObject [ ClassType = persistent,
ProcedureBlock ]
{
 Relationship Contents As EMEM.CampaignContents [ Cardinality = many,
Inverse = Campaigns ];
...
}
 Class EMEM.CampaignContents Extends (%Persistent, %Populate, %XML.Adaptor)
[ ClassType = persistent, ProcedureBlock ]
{
Relationship Campaigns As EMEM.Campaign [ Cardinality = one, Inverse =
Contents ];
Relationship Contents As EMEM.Content [ Cardinality = one, Inverse =
Campaigns ];
Index CampaignsIndex On Campaigns;
Index ContentsIndex On Contents;
}
 Class EMEM.Content Extends EMEM.NLSObject [ ClassType = persistent,
ProcedureBlock ]
{
 Relationship Campaigns As EMEM.CampaignContents [ Cardinality = many,
Inverse = Contents ];
...
}
and a form that should offer all Campaings in a select tag and save the
relation (n:m) and create a relation object to handle it
along with the content object:
 <!-- use CSP:OBJECT tag to create a reference to an instance of the
class -->
<csp:object name="objForm" classname="EMEM.Content"
OBJID=#(%request.Get("OBJID"))#>
...
 <form name="form" cspbind="objForm" enctype="multipart/form-data"
method="post" cspjs="All" onsubmit='return form_validate();'>
<table border='0'>
<tr>
<td><font color="#666666"><b><div align="right">Campaign
Name:</div></b></font></td>
<td>
<SELECT name="Campaign" cspbind="Campaigns.Campaigns" size="1">
<option value=""></option>
<CSP:WHILE CONDITION="CampaignList.Next()">
<option
value=#(CampaignList.Get("ID"))#>#(CampaignList.Get("NameDe"))#</option>
</CSP:WHILE>
</SELECT>
</tr>
<tr>
<td><b><div align="right">NameDe:</div></b></td>
<td><input type="text" name="NameDe" cspbind="NameDe" size="80"></td>
</tr>
 <tr>
<td><input type="button" name="btnClear" value="Clear"
onclick='form_new();'>
<input type="button" name="btnSave" value="Save" onclick='form_save();'>
<input type="button" name="btnSearch" value="Search"
onclick='form_search();'></td>
</tr>
</table>
</form>
it is not done automatically as i expected,
what to do ?
write a form_save method - and how ?
brg
werner
"Bill McCormick" <[EMAIL PROTECTED]> schrieb im Newsbeitrag
news:[EMAIL PROTECTED]
This is too complex a structure for the basic binding. It can handle
simple one-one pointer objects and CAN handle related ones as well where
 relationship between the two has been clearly defined that is not the
case here. You have a one to many relationship between the Content and
Header class but your bind says Header.Name - this is not correct. The
reference would look something like Header.GetAt(x).Name. You have not
bound the Header object so we are not creating a new record regardless
of whether you could provide the x and get access to an existing. A
better approach is a form for modifying the Header where you make
certain to provide a cspbind property on the Content "One" object. We
can generate code to handle that. You could write your own logic for
saving/retrieving data from this page and still implement this with CSP.
We simply can't generate a binding for it.
Dipl.-Ing. Werner Riegler wrote:
hi there again,
can anybody tell me if it should work
to create and save referenced objects within the same form as the object
itself ?
i use a standard wizard generated form - but it does not seam to work ?
(no error - but noting created)
Class EMEM.Content Extends EMEM.NLSObject [ ClassType = persistent,
ProcedureBlock ]
{
Relationship Body As EMEM.ContentBody [ Cardinality = one, Inverse =
Content ];
Relationship Campaigns As EMEM.CampaignContents [ Cardinality = many,
Inverse = Contents ];
Relationship Footer As EMEM.ContentFooter [ Cardinality = one, Inverse =
Content ];
Relationship Header As EMEM.ContentHeader [ Cardinality = one, Inverse =
Content ];
Relationship SubContent As EMEM.SubContent [ Cardinality = many, Inverse
=
Content ];
Query ContentList() As %SQLQuery(CONTAINID = 1)
{
SELECT %ID,NameDe FROM Content ORDER BY NameDe
}
Index BodyIndex On Body;
Index FooterIndex On Footer;
Index HeaderIndex On Header;
}
just try to create/save Content and Header (Property Name for Header):
<!-- use CSP:OBJECT tag to create a reference to an instance of the
class -->
<csp:object name="objForm" classname="EMEM.Content"
OBJID=#(%request.Get("OBJID"))#>
<!-- use csp:search tag to create a javascript function to invoke a
search
page -->
<csp:search name="form_search" classname="EMEM.Content" where="NameDe"
options="popup,nopredicates" onselect="update">
<form name="form" cspbind="objForm" cspjs="All" onsubmit='return
form_validate();'>
<center>
<table cellpadding="3">
<tr>
<td><b><div align="right">NameDe:</div></b></td>
<td><input type="text" name="NameDe" cspbind="NameDe" size="80"></td>
</tr>
<tr>
<td><b><div align="right">DescriptionDe:</div></b></td>
<td><input type="text" name="DescriptionDe" cspbind="DescriptionDe"
size="80"></td>
</tr>
<tr>
<td><font color="#666666"><b><div align="right">Header
Name:</div></b></font></td>
<td><input type="text" name="HeaderName" cspbind="Header.Name" size="80"

</td>
</tr>
</table>
</center>
</form>
or do I need to modify or create my own form_save method to achive this
?
brg
werner