ruby on rails - awesome_nested_set duplicating children in a select -

i having problem awesome_nested_set duplicating children in select (as title says)

i have following data in table (phpmyadmin put quotes around fields):

id      name            parent_id   lft    rgt      created_at              updated_at "12" "bnw"      null     "1"     "8"     "2010-12-01 22:23:36" "2010-12-01 22:23:36" "13" "nyssa"      "12"     "2"     "3"     "2010-12-01 22:23:48" "2010-12-01 22:25:12" "14" "boardman"     "12"     "4"     "5"     "2010-12-01 22:25:28" "2010-12-01 22:25:28" "15" "quincy"     "12"     "6"     "7"     "2010-12-01 22:25:37" "2010-12-01 22:25:37" "16" "wcc"      null     "9"     "16" "2010-12-02 18:08:00" "2010-12-02 18:08:00" "17" "california" "16"     "10" "11" "2010-12-02 18:08:08" "2010-12-02 18:08:08" "18" "north powder" "16"     "12" "13" "2010-12-02 18:08:16" "2010-12-02 18:08:16" "19" "ellensburg" "16"     "14" "15" "2010-12-02 18:08:25" "2010-12-02 18:08:25" 

model:

class destinationgroup < activerecord::base   acts_as_audited   has_one :purchase   acts_as_nested_set end 

controller:

class purchasescontroller < applicationcontroller   def new     @destination_groups = destinationgroup.all     ...   end ... 

view:

= f.select :destination_group_id, options_for_select(nested_set_options(@destination_groups) {|i| "#{'-' * i.level} #{i.name}" } ) 

if need more info can post it, thought relevant problem.

edit:

i getting html:

<select id="purchase_destination_group_id" name="purchase[destination_group_id]">   <option value="12"> bnw</option>    <option value="13">- nyssa</option>    <option value="14">- boardman</option>    <option value="15">- quincy</option>    <option value="13">- nyssa</option>    <option value="14">- boardman</option>    <option value="15">- quincy</option>    <option value="16"> wcc</option>    <option value="17">- california</option>    <option value="18">- north powder</option>    <option value="19">- ellensburg</option>    <option value="17">- california</option>    <option value="18">- north powder</option>    <option value="19">- ellensburg</option> </select>  

edit 2

this gets weirder:

destinationgroup.all.collect{|i| "#{'-' * i.level} #{i.name}" } => [" bnw", "- nyssa", "- boardman", "- quincy", " wcc", "- california", "- north powder", "- ellensburg"] 

this comes out fine.

and did in view:

= "<!-- #{@destination_groups.inspect} -->"  <!--    [   #<destinationgroup id: 12, name: "bnw", parent_id: nil, lft: 1, rgt: 8, created_at: "2010-12-01 22:23:36", updated_at: "2010-12-01 22:23:36">,    #<destinationgroup id: 13, name: "nyssa", parent_id: 12, lft: 2, rgt: 3, created_at: "2010-12-01 22:23:48", updated_at: "2010-12-01 22:25:12">,    #<destinationgroup id: 14, name: "boardman", parent_id: 12, lft: 4, rgt: 5, created_at: "2010-12-01 22:25:28", updated_at: "2010-12-01 22:25:28">,    #<destinationgroup id: 15, name: "quincy", parent_id: 12, lft: 6, rgt: 7, created_at: "2010-12-01 22:25:37", updated_at: "2010-12-01 22:25:37">,    #<destinationgroup id: 16, name: "wcc", parent_id: nil, lft: 9, rgt: 16, created_at: "2010-12-02 18:08:00", updated_at: "2010-12-02 18:08:00">,    #<destinationgroup id: 17, name: "california", parent_id: 16, lft: 10, rgt: 11, created_at: "2010-12-02 18:08:08", updated_at: "2010-12-02 18:08:08">,    #<destinationgroup id: 18, name: "north powder", parent_id: 16, lft: 12, rgt: 13, created_at: "2010-12-02 18:08:16", updated_at: "2010-12-02 18:08:16">,    #<destinationgroup id: 19, name: "ellensburg", parent_id: 16, lft: 14, rgt: 15, created_at: "2010-12-02 18:08:25", updated_at: "2010-12-02 18:08:25">   ]  -->  

thank you

i figured out, using:

# controller @destination_groups = destinationgroup.all 

then:

# view = f.select :destination_group_id, options_for_select(nested_set_options(@destination_groups) {|i| "#{'-' * i.level} #{i.name}" } ) 

i changed to:

# view = f.select :destination_group_id, options_for_select(nested_set_options(destinationgroup) {|i| "#{'-' * i.level} #{i.name}" } ) 

i guessing duplicating destinationgroup.all, anyways fixed incase runs again.