Going through /getting_started.html — stuck on step 5.10 "Validation" and "render 'new'"

[Denis K]

Hi,

I'm new to Rails and going through "Getting Started with Rails" 

I've stuck in step 5.10:

def create

  @article = Article.new(article_params)

  if @article.save

    redirect_to @article

  else

    render 'new'

  end

end

As I understand posting new article with invalid title should invoke else statement and render [/new] with error message

It shows error but throws to [http://localhost:3000/articles], instead of [http://localhost:3000/articles/new]

Is it how it supposed to work? 

Or what am I doing wrong?

Thank you all in advance!

[Colin Law]

Look in log/development.log to see what is logged when you do the post and you may get some useful information.

Colin

 

[nanaya]

Hi,

On Sun, Feb 5, 2017, at 06:18, Denis K wrote:
> Hi,
>
> I'm new to Rails and going through "Getting Started with Rails"
>
> I've stuck in step 5.10:
> def create
> @article = Article.new(article_params)
> if @article.save
> redirect_to @article
> else
> render 'new'
> end
> end
>
> As I understand posting new article with invalid title should invoke else
> statement and render [/new] with error message
>
> It shows error but throws to [http://localhost:3000/articles], instead of

> [http://localhost:3000/articles*/new*]

>
> Is it how it supposed to work?
> Or what am I doing wrong?
>

it renders 'new' but the current route is `post /articles` (no redirect)
so it is correct.

[Joe Guerra]

Take a look at your article.rb file.  You have validations in it that prevent you from writing data to your table (unless you meet those conditions).

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[Hassan Schroeder]

On Sat, Feb 4, 2017 at 1:18 PM, Denis K <thee...@gmail.com> wrote:

> I've stuck in step 5.10:
> def create
> @article = Article.new(article_params)
> if @article.save
> redirect_to @article
> else
> render 'new'
> end
> end
>
> As I understand posting new article with invalid title should invoke else
> statement and render [/new] with error message
>
> It shows error but throws to [http://localhost:3000/articles], instead of
> [http://localhost:3000/articles/new]
>
> Is it how it supposed to work?

Yes.

Note the difference between "redirect_to" which sends a redirect
response header and new URL to the user-agent vs. "render" which
stays at the same URL and provides the content of the "new" view.

--
Hassan Schroeder ------------------------ hassan.s...@gmail.com
twitter: @hassan
Consulting Availability : Silicon Valley or remote

[Scott Jacobsen]

Yes, this is the default behavior. When you post invalid data it renders rather than redirects. One reason is this way you don't need to maintain state across the redirect. 

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