This post seems good for how to create two models with one form. But how would you do it if the two models share one or more of the attributes?
That post seems fairly outdated, I would recommend using accepts_nested_attributes_for
and fields_for
in your form instead. That said, overlapping attributes should probably be set in your model's callbacks. Say you want a project's name to be automatically set to first task's name.
class Project < ActiveRecord::Base
has_many :tasks
accepts_nested_attributes_for :tasks
before_validation :set_name_from_task
private
def set_name_from_task
self.name = tasks.first.name
end
end
If your 2 models are completely unrelated, you can assign certain params to them directly in the controller.
def create
@foo = Foo.new(params[:foo])
@bar = Bar.new(params[:bar])
@bar.common_attr = params[:foo][:common_attr]
# validation/saving logic
end
Although this is not a great practice, this logic should ideally be moved into models.
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