How to fetch eo with a specific relationship
How to fetch eo with a specific relationship
- Subject: How to fetch eo with a specific relationship
- From: Louis Demers <email@hidden>
- Date: Wed, 6 Feb 2008 09:43:03 -0500
Hi,
I have 2 EO, Part and Category. Part has a to-one relationship to
Category. Category does not have a reverse to-many relationship.
Through a search/listing page of categories, the user can select a
Category and I wish to present all of the parts from this category. I
was hoping to not used the fields of the categories (like name,
type...) to do the search, and really use the EO itself as the
selection criteria. That lead meto consider using the primary key, but
every book /messages I looked through discourages one to use primary
keys/global ids. My guesses are:
1) that is a specific case where exposing/using primary keys is OK ?
2) setup the reverse to-many relationship ?
3) set querybindings (I use Display groups a lot) using the key name
of the relationship and the EO as the object and let WO figured it
out ? I seem to recall some message about this but could not find it
or sample code for that.
4) use the fields of the category to form a complete specification.
That seems unsuitable in case two categories are named the same
(temporarily due to a mixup).
What is the real WOway of doing this.
Thanks in advance.
Louis Demers eng.
www.obzerv.com
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