Rails: Understanding Query Model Syntax - ruby-on-rails

Question

I have my Ruby on Rails app up and running with 3 scaffolded models. So far so good. Now I'm coding business logic and get a syntax error and can't quite understand how to code a variable.
Details:
3 models: Document, Employee, and EmpDocument.
Business rule: Each time a new Document is added create an EmployeeDocument for each Employee
1.) Loop through Employees
2.) Cut an EmpDocument.rcd
I get an error on the .Create line, because I don't have my variables coded correctly.
I've looked through documentation without finding any rules/examples.
Document.Model
def create
#document = Document.new(document_params)
respond_to do |format|
if #document.save
format.html { redirect_to #document, notice: 'Document was successfully created.' }
format.json { render :show, status: :created, location: #document }
# create an EmpDocument record for each employee for this new document
##employees = Employee.find(:all)
Employee.all.each do |employee|
Empdocument.Create(:document_id => #document.document_id, :employee_id => employee.employee_id, :viewed => '0001-01-01')
end
else
format.html { render :new }
format.json { render json: #document.errors, status: :unprocessable_entity }
end
end
end
here's the error:
"undefined method `document_id' for #"
##employees = Employee.find(:all)
Employee.all.each do |employee|
Empdocument.Create(:document_id => #document.document_id, :employee_id => employee.employee_id, :viewed => '0001-01-01')
end

Answer 1

For your current requirement, I would encourage you to look into the after_create callback in ActiveModel.
What you can do then in your Document Model is
after_create :create_emp_documents
def create_emp_documents
Employeee.all.each do |employee|
self.empdocuments.create(employee_id: employee.id)
end
end