It's not routing.it's - MVC. Then your render 'new' template, view use instance variable defined in the current action... In the view you difened @e1 variable, but it's not defined in the create action.
2009/11/18 ARUN SRINIVASAN <[email protected]>: > That worked, care to explain the theory behind it, or some links how this > routing works??? > > On Wed, Nov 18, 2009 at 6:25 PM, Artem Korolev <[email protected]> wrote: >> >> Replace >> @expense = Expense.new(params [: expense]) >> at >> @e1 = Expense.new(params [: expense]) >> in the create action >> since the render =>: new variable @e1 is not defined, but in view, it is >> used. >> >> 2009/11/18 Arun Srini <[email protected]> >> > >> > After much ado about the naming of model adn controllers... >> > >> > model : Expense >> > controller : Expenses >> > route : map.resources :expenses >> > >> > >> > Here I am using mysql database and created a unique index, since >> > db:migrated created an id object and made it as primary key. Now in >> > the >> > def create >> > @expense = Expense.new(params[:expense]) >> > if @expense.save >> > flash[:viola] = 'New expense saved.. be frugal, save during this >> > bad economy' >> > redirect_to expenses_path >> > else >> > render :action => 'new' >> > #redirect_to new_expense_path >> > end >> > >> > >> > Here I try to save, and if any error, render action =>'new'. When I do >> > that I get the >> > >> > Called id for nil, which would mistakenly be 4 -- if you really wanted >> > the id of nil, use object_id >> > >> > Extracted source (around line #1): >> > >> > 1: <% form_for @e1 do |er| %> >> > 2: <p> >> > 3: name :<br /> >> > 4: <%= er.text_field :name %> >> > >> > I have the @e1 defined correctly in the controller (how can it work >> > when I go to the new page directly using localhost:300/expenses/new ). >> > >> > And the trace : >> > vendor/rails/actionpack/lib/action_controller/record_identifier.rb: >> > 72:in `dom_id' >> > vendor/rails/actionpack/lib/action_view/helpers/ >> > record_identification_helper.rb:16:in `dom_id' >> > vendor/rails/actionpack/lib/action_view/helpers/form_helper.rb:264:in >> > `apply_form_for_options!' >> > vendor/rails/actionpack/lib/action_view/helpers/form_helper.rb:248:in >> > `form_for' >> > app/views/expenses/new.html.erb:1:in >> > `_run_erb_47app47views47expenses47new46html46erb' >> > app/controllers/expenses_controller.rb:18:in `create' >> > >> > What I don't understand is the form_for works fine when used >> > initially, or even through the >> > redirect_to new_expense_path >> > but not through the action => 'new' >> > >> > Any help is appreciated...... >> > >> > -- >> > >> > You received this message because you are subscribed to the Google >> > Groups "Ruby on Rails: Talk" group. >> > To post to this group, send email to [email protected]. >> > To unsubscribe from this group, send email to >> > [email protected]. >> > For more options, visit this group at >> > http://groups.google.com/group/rubyonrails-talk?hl=. >> > >> > >> >> -- >> >> You received this message because you are subscribed to the Google Groups >> "Ruby on Rails: Talk" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> For more options, visit this group at >> http://groups.google.com/group/rubyonrails-talk?hl=. >> >> > > > > -- > If opportunity doesn't knock, build a door. - Milton Berle > > http://www.twitter.com/arzvi > http://delicious.com/arzvi > > -- > > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=. > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=.
