flyerhzm
(flyerhzm)
1
I guess it will return all the objects whose parent_id is assigned. But I get only an object.
I have to do like these
@parent_id = params[:parent_id]
if @parent_id.nil?
conditions = ["parent_id is null"]
else
conditions = ["parent_id = ?", @parent_id]
end
@categories = Category.find(:all, :conditions => conditions)
But I expected that can be done like this
@categories = Category.find_by_parent_id(params[:parent_id]) # only one object
Does anybody have good idea?
huang zhimin wrote:
I guess it will return all the objects whose parent_id is assigned. But I get only an object.
I have to do like these
@parent_id = params[:parent_id]
if @parent_id.nil?
conditions = ["parent_id is null"]
else
conditions = ["parent_id = ?", @parent_id]
end
@categories = Category.find(:all, :conditions => conditions)
But I expected that can be done like this
@categories = Category.find_by_parent_id(params[:parent_id]) # only one object
Does anybody have good idea?
Perhaps you're looking for find_all_by_parent_id?