Hi Greg

At this point, TS doesn't support :touch (probably because I didn't really know 
about it). If you want to supply a patch, that'd be great! :)

-- 
Pat

On 22/11/2011, at 4:42 AM, Greg DeVore wrote:

> Pat -
> 
> Thanks so much! That worked great. I also noticed that in Rails 3
> calling :touch on an object does not trigger a delta index. Is that by
> design or should :touch trigger delta indexing?
> 
> Greg
> 
> On Nov 18, 9:29 am, Pat Allan <[email protected]> wrote:
>> Hi Greg
>> 
>> I think the best approach is what you're hinting at in your final screenshot 
>> - a complex piece of SQL code that grabs the ids you need. You could look at 
>> your space_ids attribute for an example, and you can use the join method in 
>> your define_index block to force joins on associations that you're not using 
>> in any fields or attributes - although given you've got space_ids, I guess 
>> all the tables are referenced already.
>> 
>> If you're using MySQL, then an IF(manuals.draft = 0 AND sections.hidden = 0, 
>> spaces.id, 0) statement might do the trick (wrapped up in the standard 
>> concat statements)… PostgreSQL doesn't have an IF method, but you can get 
>> the same thing happening with a CASE statement instead.
>> 
>> Is that enough help? If you get stuck, let me know.
>> 
>> Cheers
>> 
>> --
>> Pat
>> 
>> On 16/11/2011, at 10:45 PM, Greg DeVore wrote:
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>>> We are in the process of upgrading from Rails 2.3 to 3.x. We have been
>>> using TS for awhile but had to hack it a bit to make it do delta
>>> indexing on some complex joins we were doing. As we upgrade to Rails 3
>>> we want to make this "out of the box" with the current version of TS
>>> without having to hack up our own version. I am just not sure about
>>> the best way to setup the "has" index for the MVA value we want to
>>> index.
>> 
>>> Here are some screenshots that show what we are trying to do:
>> 
>>> http://gdevore.clarify-it.com/d/qz6ale
>> 
>>> Basically I have a Lesson model that I need to add
>>> a :published_space_ids MVA to. The scope to get the
>>> published_spaces_ids for a lesson looks like this:
>> 
>>> Space.joins(:manuals => {:sections
>>> => :readings}).where('readings.lesson_id = ?',
>>> self.id).where('manuals.draft = ? AND sections.hidden = ?', false,
>>> false)
>> 
>>> I am not sure how to add this to the sphinx index for the Lesson
>>> model.
>> 
>>> Thanks,
>> 
>>> Greg
>> 
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