Rails: Multiple dropdown menus collection_select

Question

Super Rails n00b here: Currently I have a form with the following code:

<%= f.collection_select :account_ids, @accounts, :id, :name, include_blank: true %>         


        

Answer 1

If your parameter name ends in "[]", then all inputs with that name will be collated into an array with that name.

So, your select tag (in html) will be like

...


and to make this using the collection_select helper, try

<%= f.collection_select :account_ids, @accounts, :id, :name, {include_blank: true}, {:name => 'account_ids[]'} %>

    

             

                                                        
            
            

              
                
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