Redirect to another action from another controller in Rails

Question

I am developing a simple action, when saving a register if there is value in a given field the system should redirect to a create from another model/controller. I’m having trouble making this happen

   if @reproduction.update(reproduction_params)
    if reproduction_params[:parturition].nil?
      format.html { redirect_to reproductions_path, notice: I18n.t('crud.saved') }
      format.json { render :show, status: :ok, location: @reproduction }
      format.js { render 'reproduction', animal: @animal, reproductions: @reproductions }
    else
      @animal = Animal.new(@reproduction)
      redirect_to new_animal_path
    end
  else
    format.html { render :edit }
    format.json { render json: @reproduction.errors, status: :unprocessable_entity }
    format.js { render 'edit' }
  end
end

The idea is that when saving the state of pregnancy, if there is delivery after saving the user is directed to the registration of new animal. And if possible already selected in which pregnancy it was generated (in this way we can track parents and other variables.

Answer 1

I see two ways to solve your problem, it will depend on the structure of your project.

The first would be to render the other action, so you can use its variable @animal

(...)
else
  @animal = Animal.new(reproduction_id: @reproduction.id)
  render 'animals/new'
end
(...)

The second would be to redirect and send via params the information you want to be already filled in the form, then receive and fill it out on the other side.

(..)
else
  redirect_to new_animal_path(reproduction_id: @reproduction.id)
end
(...)