Hello everyone, i wonder if someone can help i'm a newcomer and this problem is driving me crazy, and keeps me from going on. I have this two models with a habtm relationship Entidad(entity) and Persona(person), on the people view i want to see the entity/es he belongs to and viceversa, so far so good. The thing im getting stuck is with the form that handles the editing to add more people to an entity, heres what i got (mostly scaffold code with some additions):
In the controller:
def edit @persona = Persona.find(params[:id]) @persona_entidad = Persona.find(params[:id]).entidades @entidades = Entidad.find(:all, :order => "nombre").map {|u| [u.nombre, u.id] } end
def update @persona = Persona.find(params[:id]) @persona.entidades << @entidades @persona.save if @persona.update_attributes(params[:persona]) flash[:notice] = 'Persona was successfully updated.' redirect_to :action => 'show', :id => @persona else render :action => 'edit' end end
On the view:
<p><label for="persona_entidad_id">Añadir pertenencia a entidad</label><br/> <%= select(:entidades_personas, :entidad_id, @entidades ) %></p>
I get th following error: Entidad expected, got NilClass
The closer i've got to the solution is with this change to the controller:
def update @persona = Persona.find(params[:id]) @persona.entidades << Entidad.find(params[:entidad_id]) @persona.save if @persona.update_attributes(params[:persona]) flash[:notice] = 'Persona was successfully updated.' redirect_to :action => 'show', :id => @persona else render :action => 'edit' end end
where i get this error: Couldn't find Entidad without an ID
Basically i want an object of the type Entidad to be added to Persona.entidad, i can do it with irb but im unable with the rails models.
Thanks in advance
