Railscasts - Controllers in Rails 3

#224

Jul 26, 2010

59 comments

Controllers in Rails 3

Embedded flash notices, permanent cookies, and the details of respond_with are in this episode.

Tags: rails-3.0 controllers

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alternative download for iPod & Apple TV (18.5 MB, 10:49)

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Resources

# config/application.rb
config.filter_parameters += [:password]

# products_controller
redirect_to @product, :notice => "Successfully created product."
redirect_to [:edit, @product]
redirect_to [@category, :edit, @product]

cookies.permanent[:last_product_id] = @product.id

# in class
respond_to :html, :xml

# in action
respond_with(@products)
respond_with(@product, :location => products_url)
respond_with(@product, :responder => MyResponder)
respond_with(@product) do |format|
  format.xml { render :text => "I'm XML!" }
end

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59 comments

1. doabit Jul 26, 2010 at 02:08

thank you for your video. i am waiting for it every week

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2. Branden Silva Jul 26, 2010 at 02:23

respond_with(@awesomeness)

Thanks for the casts Ryan. They are always appreciated.

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3. Mickaël Jul 26, 2010 at 02:41

Thank's for your last episode. See you next week for sure ;-)

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4. Bagwan Pankaj Jul 26, 2010 at 03:27

Thanks for the awesome episode.

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5. docgecko Jul 26, 2010 at 03:40

Brilliant Ryan, thank you very much!

Have you also looked into José Valim's work on Inherited Resourses. I'd love to see you do something on that theme also.

Keep up the top work!!!

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6. Emerson Moretto Jul 26, 2010 at 04:38

very very thank you!

Your job is fuckin' good!

I will donate.

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7. Geoffroy Jul 26, 2010 at 05:44

Thanks a lot for the screecasts.

It seems a really small error has gone through, in the destroy method of your controller, the respond_with(@product) shall produce an error I think (as the product has just been destroyed).

That aside, you really rock!

Regards

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8. Geoffroy Jul 26, 2010 at 05:46

Oops seems I should have watched until the end.
Sorry for this.

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9. Renato Jul 26, 2010 at 07:00

respond_with accepts :only and :except options as well.. :)

you can use it for specific actions.. that's the only thing I missed on the video

great work man

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10. robs Jul 26, 2010 at 08:16

@Renato, did you mean the respond_to method that takes these options?

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11. George Jul 26, 2010 at 14:35

Thanks.

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12. Javi Jul 26, 2010 at 14:49

I was wondering what the best way to test these controllers is when testing what happens depending whether the record is valid or not.

My best try so far:

errors = ActiveModel::Errors.new(Post.new)
errors.add_on_blank(:id) Post.any_instance.stubs(:errors).returns(errors) Post.any_instance.stubs(:valid?).returns(false)

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13. ones006 Jul 26, 2010 at 19:19

thank you somuch. this is AWESOME. i am wait next video.

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14. hakunin Jul 26, 2010 at 21:58

Speaking of respond_with - What do you think about putting it in an after_filter to avoid duplication?

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15. 23 Impressions Jul 26, 2010 at 23:11

Impressing .

Cant wait to migrate my present projects to Rails 3.

Eagerly waiting for your next video.

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16. Michael Hasenstein Jul 26, 2010 at 23:42

Bryan, for respond_with you removed the HTML specific part - but you left the flash[] in there? So what happens when an XML request is served? The flash is set but it's useless for XML, so it is delivered with the next HTML request, to which it does not belong? Or what am I missing?

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17. eryaman halı yıkama Jul 27, 2010 at 01:03

Thanks for the awesome episode.

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18. Brian Bartholomew Jul 27, 2010 at 17:23

Awesome!

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19. asics shose Jul 27, 2010 at 20:09

Speaking of respond_with - What do you think about putting it in an after_filter to avoid duplication?

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20. Jim Jul 27, 2010 at 20:39

cool! these rails3 videos help a lot. Thanks Ryan!

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21. RJ Jul 27, 2010 at 23:52

One thing that drives me nuts about the flash is that is sticks around until the next page is loaded.

For example, I like having a single/format for my flash messages and I use them for confirmation messages when CRUD'ing.

However if a user fails to save a record then the page is not redirected but a render event is called instead. This means that the flash is nicely displayed on the current error page but it ALSO sticks around for the next page (Where it isnt correct). I keep having to manually delete the flash whenever an action fails (after the render call) so that it isn't carried on to the next page.

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22. buy office 2007 Jul 28, 2010 at 02:42

cool! these rails3 videos help a lot. Thanks Ryan!

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23. sunshine Jul 28, 2010 at 20:22

dood post!

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24. Terry Schmidt Jul 30, 2010 at 07:36

I had no clue you could do 'redirect_to [:edit, @post]'. I think this is much more concise, especially when you get into nested routes. Great episode :)

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25. Terry Schmidt Jul 30, 2010 at 07:47

I had no clue you could do 'redirect_to [:edit, @object]'. This is so much more concise than writing out 'redirect_to edit_object_path(@object)' in my opinion, especially when it comes to nested routes. Great episode :)

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One thing that drives me nuts about the flash is that is sticks around until the next page is loaded.

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29. Steve Aug 03, 2010 at 10:56

@RJ You want to use flash.now instead of flash. Michael Hartl's Rails Tutorial at www.railstutorial.org (free to read online for rails 2.3 and 3, free to download for rails 2.3) talks about it. hope that helps.

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When an object has errors, it will redirect to the location if specified. It is not handled in this screencast, but it is not working as it should.

http://gist.github.com/535722

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the respond_with(@product) shall produce an error I think (as the product has just been destroyed).