ruby on rails - Nested controller Resources, how to do update and destroy? -


followed tutorial me create instances within controller. in other words transactions created on envelope controller. comments on blog post.

everything working perfectly, don't know how edit transaction or destroy one. need find how edit existing thing. let me show have far:

in views/envelopes/edit (the form code copied can create new transactions)

 <% @envelope.transactions.each |transaction|%>    <%= form_for [@envelope, @envelope.transactions.build] |f| %> <!--??? need edit instead of build ???-->      <%= f.text_field :name, "value" => transaction.name %>      <%= f.text_field :cash, "value" => transaction.cash %>      <%= f.submit "submit" %>     <% end %>    <%= link_to "remove", root_path %>  <!--??? want remove transaction ???-->  <% end %>

in routes.rb

  resources :envelopes      resources :transactions   end

in transaction controller

class transactionscontroller < applicationcontroller   def create     @envelope = envelope.find(params[:envelope_id])     @transaction = @envelope.transactions.build(transaction_params)#(params[:transaction])     @transaction.save      @envelope.update_attributes :cash => @envelope.cash - @transaction.cash      redirect_to edit_envelope_path(@envelope)   end    def destroy     # ???   end    def update     # ???   end    def transaction_params     params.require(:transaction).permit(:cash, :name, :envelope_id)   end end 

  def update     @transaction = @envelope.transactions.find(params[:id])     if @transaction.update(transaction_params)       redirect @envelope, notice: 'transaction updated'     else       redirect_to @envelope, notice: 'transaction not updated'     end   end    def destroy     @transaction.destroy     redirect_to @envelope, notice: 'text here'   end

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