ruby on rails - Stay on the same page after edit -

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i'm trying follow railstutorial guide, doing own application instead. have trouble section 7, forms.

my controller :

  def update     d = deck.find(params[:id])     d.title = params[:deck][:title]     d.slug = params[:deck][:slug]     d.category = params[:deck][:category]      if d.save       redirect_to deck_path(d), notice: "deck saved successfully"     else       render :edit     end    end

i know it's very, far code, refactor later (if have suggestion i'm ears, use rails 3, guess strong parameters of rails 4 out).

the problem when d.save not work (due validation), render :edit.

right now, when enter invalid data, tries redirect show action, , crashes because not have data display.
if add @deck = d above render, works, url still show action.

if validation fail, how can stay on same url , display error messages ? "change url render same page" behavior accepted valid ?

thanks !

if you're interested in looking @ rest of code, it's here : https://github.com/cosmo0/teachmtg/tree/remodel-decks

actually when fails url not 'show' 'update' url.

your code works.

when submit form, browser sends post request controller#update.

when update fails, tell update action "render :edit". renders :edit action inside :update route.

the update route uses same url show action : can check when running 'rake routes', difference method post 'update' vs 'show'

that's why think show url in browser works: on update action renders :edit.

(telling update action 'render :edit' doesn't mean redirected :edit :update)

is clear enough ?


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