Ruby on Rails

On 25 January 2016 at 13:19, Matti Ezzat <lists@ruby-forum.com> wrote:
> Hi yes I did the below codes
>
> def redirect_to_random
> @restaurant = Restaurant.where(vegan: false).take!
> render 'show'
> end
>
> the only problem is only showing one result with a vegan false, what I
> want is when ever I push suggestion button every time I get a different
> result but with vegan false..

I don't see what that has got to do with your original question. Are
you in fact asking how to return a random record from an activerecord
query?

The take method does not give you a random record, it is just that
which one it gives is not determined. I have never had to do that so
googled for
activerecord random record and the first result [1] suggests the following

offset = rand(Restaurant.where(vegan: false).count)

# Rails 4
@restaurant = Restaurant.where(vegan: false).offset(offset).first

# Rails 3
@restaurant = Restaurant.where(vegan: false).first(:offset => offset)

I suggest some further googling to see whether there are other suggestions.

Colin

[1] http://stackoverflow.com/questions/2752231/random-record-in-activerecord

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