Does passing the params collection from controller to model break MVC?

class Model < ActiveRecord::Base
  def update_from_params(params)
    ....
  end
end

class ModelsController < ActionController::Base
  def update
    ...
    @model.update_from_params(params)
  end
end

class Model < ActiveRecord::Base
  def update_from_update_params(params)
    # do stuff
  end

  def update_from_settings_params(params)
    # do different stuff
  end

end

class ModelsController < ActionController::Base
  def update
    ...
    @model.update_from_update_params(params)
  end

  def change_settings
    ...
    @model.update_from_settings_params(params)
  end
end

class Model < ActiveRecord::Base
  def update_from_data(hash)
    validate_data!(hash)
    # do stuff
  end
end

class ModelsController < ActionController::Base
  def update
    ...
    @model.update_from_data(translate_update_params)
  end

  def change_settings
    ...
    @model.update_from_data(translate_change_settings_params)
  end
end

# in controller
def search
  Model.search(params[:search][:options])
end

<!-- in view -->
<input type='text' name='search[options][keywords]' />
<input type='text' name='search[options][conditions]' />
<input type='text' name='search[options][sort]' />

def self.do_search(criteria)

        Rental.search(criteria[:keywords],
                      :per_page => self.per_page,
                      :page => page,
                      :conditions => criteria[:conditions],
                      :order => criteria[:sort])

end

def self.do_search(keyword,params)

        Rental.search(keyword,
                      :per_page => self.per_page,
                      :page => page,
                      :conditions => will_condition(params),
                      :order => will_sort(params))

end

@@searchable_fields = ['property_status_id', 'neighborhood_id', 'borough_id', 'number_of_bedrooms']
  cattr_reader :searchable_fields

  @@sortable_fields =   ['number_of_bedrooms','rent','street_address']
  cattr_reader :sortable_fields