ruby on rails - Simple Form HABTM multiple associations on same form -


i using simple_form/rails 4 , want create multiple relationships on same form. models are:

class characteristic < activerecord::base   has_and_belongs_to_many :recipes end

and

class recipe < activerecord::base   has_and_belongs_to_many :characteristics end

i have join table

  create_table "characteristics_recipes", force: true |t|     t.integer "recipe_id"     t.integer "characteristic_id"   end

my form looks like

<%= simple_form_for(@recipe, html: {class: 'form-horizontal' }) |f| %>   <div class="form-group">     <%= f.association :characteristics,                        :as => :collection_select,                        collection: characteristic.where(category: "prep time"),                        prompt: "choose prep time", label: "prep time",                        value_method: :id %>   </div>   <div class="form-group">     <%= f.association :characteristics,                        :as => :collection_select,                        collection: characteristic.where(category: "cook time"),                        prompt: "choose cook time", label: "cook time",                        value_method: :id %>   </div>    <%= f.button :submit %> <% end %>

my params capturing second association , string not int ...

{"utf8"=>"✓",  "authenticity_token"=>"gr2mvo1s7=",  "recipe"=>{ "characteristic_ids"=>"7"},  "commit"=>"create recipe",  "action"=>"create",  "controller"=>"recipes"}

in controller have following permitted params:

   def recipe_params       params.require(:recipe).permit(:characteristic_ids)     end

i have tried changing did not matter since not capturing first association

   def recipe_params       params.require(:recipe).permit(:characteristic_ids => [])     end

how can multiple associations work here?

thank you!!!!


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