rails 3 find a value in a params array -

i using jquery ui sortable sort rows on website.

here view:

<section class="data-list">     <article id="item_<%= item.id %>" class="data sortable">         <!-- stuff goes here -->     </article> </section> 

here js:

$('.data-list').sortable({items: '> .data'}).bind('sortupdate', function() {     var release = geturlvars()["id"];     $.ajax({         type: 'post',         data: $(this).sortable("serialize"),         url: '/release_items/'+ release +'/prioritize'     }); }); 

this creates params['item'] array looks this:

["1537", "1536", "1540", "1541", "1542", "1543", "1544", "1545", "1547", "1546"] 

here controller code:

def prioritize     @release = release.find(params[:id])     item = @release.release_items     item.each |i|         i.priority = params['item'].index(i.id.to_s).to_i + 1         i.save     end end 

my problem have several release_items distinguished item_type column. , stands don't have way in controller filter item_type in @release = release.find(params[:id]) line.

what make sure in item.each |i| loop priority set if item in params['item'] array. how that? please let me know if not clear enough. thanks!

edit 1:

for every release, there n number of release items. release items separated display on site item_type column (e.g., general, project, data, patch). on site there 4 different lists of items , want able sort 4 lists individually. stated above, params['item'] array being passed prioritize action in controller has items need sorted, want want.

the problem i'm running in first 2 lines in prioritize action of release items, not ones in params['item'] array. values in array ids of release items need sorted. instead of getting release items, want items in params['item'] array. have releaseitem model can select from. so, i'm trying this: (i know isn't correct code, clarity sake)

item = releaseitem.find(conditions: "id in params['item']") 

does make little more sense? appreciate help!

i think understand trying do...

def prioritize     @release = release.find(params[:id])     items = @release.release_items.where("id in (?)", params['item'])     items.each_with_index |item, index|                 item.priority = index + 1         item.save     end end