Class: TabStudentsController

Inherits:
Object
  • Object
show all
Defined in:
lib/controllers/tab_students_controller.rb

Instance Method Summary collapse

Constructor Details

#initialize(view) ⇒ TabStudentsController

Returns a new instance of TabStudentsController.



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# File 'lib/controllers/tab_students_controller.rb', line 10

def initialize(view)
  @view = view
  @data_list = DataListStudentShort.new([])
  @data_list.add_listener(@view)
end

Instance Method Details

#on_db_conn_error ⇒ Object 



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# File 'lib/controllers/tab_students_controller.rb', line 37

def on_db_conn_error
  api = Win32API.new('user32', 'MessageBox', ['L', 'P', 'P', 'L'], 'I')
  api.call(0, "No connection to DB", "Error", 0)
  # TODO: Возможность переключения на JSON помимо exit
  exit(false)
end

#on_view_created ⇒ Object 



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# File 'lib/controllers/tab_students_controller.rb', line 16

def on_view_created
  begin
    @student_rep = StudentRepository.new(DBSourceAdapter.new)
  rescue Mysql2::Error::ConnectionError
    on_db_conn_error
  end
end

#refresh_data(page, per_page) ⇒ Object 



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# File 'lib/controllers/tab_students_controller.rb', line 28

def refresh_data(page, per_page)
  begin
    @data_list = @student_rep.paginated_short_students(page, per_page, @data_list)
    @view.update_student_count(@student_rep.student_count)
  rescue
    on_db_conn_error
  end
end

#show_view ⇒ Object 



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# File 'lib/controllers/tab_students_controller.rb', line 24

def show_view
  @view.create.show
end