Rails 4 Form - Adding a new input to an existing record -

i have form users enter profile info saved in user model. need collect piece of information users @ later stage (on different page). how collect info , append existing user record?

here form code 1 additional input need user. when hit submit, runs without error new field not saved in model. ran migration add field model.

<%= form_for @user, html: { method: :put }) |f| %>   <div class="form-group">   <%= f.label :what_is_your_favorite_color %>   <%= f.text_field :color, class:"form-control" %>  </div>   <div class="form-group">     <%= f.submit "submit", class:"btn btn-primary" %>  </div>  <% end %> 

my controller update method blank .. can tell me update method should like? user logged in need find user record (probably id column?) , write or update new input model.

def update    ??     end 

you first need fetch record, pass params hash, , rails rest.

def update   @record = record.find(params[:id])   if @record.update(record_params)     redirect_to @record   else     render :edit   end end 

if using rails 4, need account strong_parameters. add new attribute permitted attributes.

  def record_params     params.require(:record).permit(:color, :and, :other, :attributes, :go, :here)   end 

the above code assumes record id in params hash, or in other words, using restful routes. if not, may want pass in id session (if is, say, user record, , using devise).

def update   @record = record.find(current_user)   # ... rest should same end