Ruby on Rails

On 31 May 2012 12:38, Colin Law <clanlaw@googlemail.com> wrote:
> 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.

Uhm it sounds strange to me creating a new management association in
the manager update action.
I mean update only to to update manger attributes.
Perhaps I'm wrong.

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