I have a simple_form which I am trying to get to always include a blank item in it, as a 'nil' value in that field has a special meaning in this database. In order to make it more obvious for end users, I also want to title it with something along the lines of "(select if none)".
I'm currently doing this, but it only inserts the 'blank' item when creating a new object, not when editing one.
# _child_form.html.erb <%= simple_form_for @child do |f| %> <%= f.input :first_name %> <%= f.input :last_name %> <%= f.association :parent, :collection => @parents, :prompt => "(select if none)" %> <%= f.button.submit %> <% end %>
.
# child_controller.rb def new @child = Child.new @parents = Parent.all end def edit @child = Child.find(params[:id]) @parents = Parent.all end
You want to use :include_blank
, not :prompt
<%= f.association :parent, :collection => @parents, :include_blank => "(select if none)" %>
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