Re: OR searches using DisplayGroups
Re: OR searches using DisplayGroups
- Subject: Re: OR searches using DisplayGroups
- From: David Holt <email@hidden>
- Date: Fri, 22 Jan 2010 09:59:25 -0800
Of course!
In my opinion DisplayGroups are grossly underused given the amount
you can do with no code. As Chuck suggested, it is probably time to
at least start a wiki page on them.
Thanks!
David
On 22-Jan-10, at 8:47 AM, Fredrik Lindgren wrote:
Some time ago I made an extension to the WODisplayGroup with
support for a queryMatchAll dictionary. This extension makes it
possible to have a search string like: "fault, error, -letter," -
which creates a qualifier that finds records with the text string
"fault" and "error" and excludes "letter". It also has support for
operators like '<' and' >'.
Really handy!
It also adds a qualifiedObjects() method to see all the objects
this display group has regardless of the qualifier.
I am using this for in memory searching on a table with >500 000
records, and it works quite well.
If anyone is interested, I am willing to share... Its really a
simple extension. After finding out about ERXDisplayGroup I had
been meaning to use that as a base. However I have not had the time
to make the adjustments.
Anyone interested? It can of course be extended with more cool
search ideas!
/Fredrik Lindgren
21 jan 2010 kl. 22.17 skrev David Holt:
Hi all,
I needed to include an OR search on a component that had been
created using the queryMatch functionality of WODisplayGroup.
As you know if you create such things, by default any values
included in the queryMatch search fields are joined in "AND"
searches by default. This is a limitation that I've tried to work
around without resorting to programatically setting the qualifier
and fetch on the displayGroup for a very long time.
In my travels I discovered that ERXDisplayGroup in Wonder allows
you to add qualifiers to the WODisplayGroup's generated
qualifier. Instead of using queryMatch on the relevant fields I
used a local variable to then programatically create the OR
qualifier I needed. If you use the method "setQualifierForKey" you
add your new qualifier(s) to a dictionary called _extraQualifiers.
These are added to the generated qualifierFromQueryValues just
before the displayGroup is qualified. After the DG is qualified,
you may want to reset the _extraQualifiers dictionary using
clearExtraQualifiers.
Anyway, it is really slick because it saved me having to code the
search page by hand and I wanted to point it out since I didn't
see anything obvious in the archives about the use of these methods.
David
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