serialization - Rails serialized integer attribute in params, but not saving into model instance -

so have following model contains serialized integer attribute

rake file:

class createcompanyassetstats < activerecord::migration   def change     create_table :company_asset_stats |t|       t.integer :companyid       t.string :geo       t.integer :assettype       t.date :starttime       t.date :endtime        t.timestamps     end   end end 

model:

serialize :companyid, array serialize :assettype, array serialize :geo, array 

in view have form have multiselect dropdown stores value(s) params:

  <div class="dropdown" data-init="dropdown">     <button >multi select</button>     <select name="company_asset_stats[companyid][]" multiple>       <% allfieldvalues('company', 'companyname', 'company').each |value| %>         <option value=<%= value[1] %>><%= value[0] %></option>       <% end %>     </select>   </div> 

the resulting param in following form: parameters: {"utf8"=>"✓", "authenticity_token"=>"2wfx3/3tyhsjobwraljyw2jt4jr5ucvtgybk3ixktqs=", "company_asset_stats"=>{"starttime"=>"2013-07-31t00:00-07:00", "endtime"=>"2013-07-31t00:00-07:00", "companyid"=>["1864"]}, "commit"=>"create"}

and create controller following:

def create     @company_asset_stats = companyassetstats.new(params[:company_asset_stats])      if @company_asset_stats.save       redirect_to :action => "index"     else       render 'new'     end end 

when redirected model's index however, see companyid saved 0 , assettype nothing @ all. have tried manually setting attributes in following manner:

@company_asset_stats.companyid = [1,2,3] 

but same display in index.

any help?

you appear have t.integer :companyid in database. serialized attributes cannot go integer column, instead need text column.