How to send instance variables when rendering a partial

Question

I want to render action if my model is not valid.

render "book_page"

https://gist.github.com/f7259eb79d1f2c951036

But for now @prices_per_night and @number_of_nights are nil when i click submit button. How to prevent this?

I tried to move this form to partial but it now happend, because I cant render only partial. Or Am I wrong?

What do you mean by " @prices_per_night and @number_of_nights are nil. How to Prevent this?" How is this relevant, are you trying to set those as global variables? — rudolph9
– rudolph9, Commented Jul 29, 2012 at 12:27
I think you may be confusing what to refer to variables as, check out their definitions here, should your title be "How to send instance variables when rendering a partial"?? — rudolph9
– rudolph9, Commented Jul 29, 2012 at 12:30

oseiskar · Accepted Answer · 2012-07-29 12:48:14Z

1

Using render does not make Rails call the relevant method, book_page, in the controller. It proceeds directly to book_page.html.erb and, at this point, no method has set your instance variables so they appear nil.

answered Jul 29, 2012 at 12:48

oseiskar

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2 Comments

tomekfranek Over a year ago

Ok, so which method should i use instead of render?

oseiskar Over a year ago

I don't think anything stops you from calling book_page explicitly before calling render. Perhaps you should do both (or set the instance variables and call render) in some appropriate helper method.

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