Hi, I'm trying to use transactions in my code but I'm experiencing
some difficulties.
My code looks like this:
post "/article/new" do
@user = User.get(session[:uid])
@qty = params[:qty].to_i
DataMapper.repository(:default).transaction do
@article = Article.create(params[:article])
@article.stock_line = StockLine.create(
:work_center => default_work_center,
:units => @qty,
:available => @qty
)
end
if @article.saved?
@status = "Ok"
@article = Article.new
else
@status = "ERROR"
end
erb :"article/new"
end
When I execute the code on my browser (this is a sinatra app), I get
the following error:
No method "saved?" for Nil Class
So I assume that @article only exists inside the transaction object.
So I tried creating the object in the outside with this:
@article = Article.new(params[:article)
DataMapper.repository(:default).transaction do
@article.save
.....
end
In that case, @article.saved? always returns False.
What am I doing wrong? How can I check if an entire transaction has
failed?
Thanks
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