display the form text at page itself

hi, i have a view called forum which is a form and i want to
show the data below the form when user fill the form.
i have this code in Blog controller

def forum
if request.post? and params[:blog}
@blog = Blog.new(params[:blog])
if @blog.save
redirect_to :action => “show”
end
end
end

def show
@z=Blog.return_forum
end
end

in this code it shows data in a seperate page called show.but i want to show data
in the page itself(forum page)…plz can anyone tell me how can i do it

Use ajax or else instead of redirecting to show method , write the
content of show in the forum itself.
def forum
if request.post? and params[:blog]
     @blog=Blog.new(params[:blog])
     if @blog.save
             flash[:notice]="Forum successfully posted"
    else
          flash[:error]="Sorry! try it again"
   end
end
@z=Blog.return_forum
end