Ruby on Rails

On 31 May 2012 09:40, Mauro <mrsanna1@gmail.com> wrote:
> Hello.
> I need an advice to find a solution on creating a new has_many
> :through association on a existing model.
> I have:
>
> Company
>  has_many :managements, :dependent => :destroy
>  has_many :managers, :through => :managements
>
> Manager
>  has_many :managements, :dependent => :destroy
>  has_many :companies, :through => :managements
>
> With the command
> link_to "Add manager", new_company_manager_url(@company), :class =>
> "btn", :remote => true
>
> I display the manager form, create a new manager associated to the
> company and create a new management.
> In manager controller:
>
> def create
>    @company = Company.find(params[:company_id])
>    @manager = Manager.new(params[:manager])
>    add_management
>    @manager.save
>    respond_with @manager
> end
>
> private
>  def add_management
>    profile = params[:manager][:profile]
>    profile.delete_if { |v| v.empty? }
>    profile.each do |prof|
>      @manager.managements.build(:profile => prof, :company => @company)
>    end
>  end
>
> If the manager exists I only need to create a new management, so in
> the manager new action I've put:
>
> def new
>    @company = Company.find(params[:company_id])
>    @manager = Manager.find_or_initialize_by_fiscal_code(params[:fiscal_code])
>    respond_with(@manager)
> end
>
> If the manager does not exists I create a new one and a new management
> like showed before.
> But, if the manager exists the form action is to update manager.
> I'm searching for a solution to only create a new management without
> updating manager.

Why can't you do what you want in the update action? If the details
of the manager record have not changed then the update will do
nothing.

Colin

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