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POthinking-sphinx has_many :through relationships
 

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    <p>I've got a many-to-many relationship between ledger and staff and would like to use Thinking-Sphinx (TS) to search ledgers which the current_staff member owns.</p> <p>In Rails 3 console I've tried the following</p> <pre><code>&gt; Ledger.search 'test', :include =&gt; :staff_ids, :with =&gt; {:staff_ids =&gt; 1} Returns [] &gt; Ledger.search 'test', :include =&gt; :staff_id, :condition =&gt; {:staff_id =&gt; 1} Returns ledgers which do not belong to staff member with id 1. </code></pre> <p>Ledger Model</p> <pre><code>class Ledger &lt; ActiveRecord::Base has_many :employees has_many :staff, :through =&gt; :employees define_index do indexes :name # indexes staff.id, :as =&gt; :staff_id # many to many relationship. has staff(:id), :as =&gt; :staff_ids # many to many relationship. set_property :delta =&gt; true end end </code></pre> <p>Staff Model</p> <pre><code>class Staff &lt; ActiveRecord::Base has_many :employees has_many :ledgers, :through =&gt; :employees define_index do indexes username indexes surname indexes firstname set_property :delta =&gt; true # http://freelancing-god.github.com/ts/en/deltas.html end end </code></pre> <p>I have got the following inflection setup</p> <pre><code> inflect.uncountable %w( staff ) </code></pre> <p>I've tried indexes and has in my Ledger model, rebuilding and restarting TS after each change to indexes.</p> <p><strong>Update1:</strong> </p> <p>I'm very close. If I do a 'rake ts:reindex' then restart me rails server, my search on ledgers (associated to the current_staff) works fine:</p> <pre><code>@results = Ledger.search params[:search], :include =&gt;:staff_id, :conditions =&gt;{:staff_id =&gt; current_staff.id} </code></pre> <p>It's almost like I have to have a delta on my has_many :through model, is this correct?</p> <p><strong>Update 2:</strong></p> <p>I've started to play around with Delta's and associations as in the thinking-sphinx documentation. Still doesn't seem to work though.</p> <p>Here is what I've put in my Ledger model:</p> <pre><code> after_save :set_staff_delta_flag ... private def set_staff_delta_flag staff.delta = true staff.save end </code></pre> <p>I get the following error when trying to add a new ledger:</p> <pre><code>NoMethodError (undefined method `delta=' for #&lt;Class:0x00000001516340&gt;): app/models/ledger.rb:19:in `set_staff_delta_flag' app/controllers/ledgers_controller.rb:24:in `create' </code></pre>
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