def login(self, response):
        """Generate a login request."""
        auth_msg = response.css('.title--h1::text').get()
        if auth_msg and auth_msg.lower() == 'identification':
            # We Must authenticate first !
            csrf_token = response.css('#user_csrf_token').xpath('@value').get()
            data = {
                'action':'signin',
                'user_csrf_token':csrf_token,
                'user_username':login_informations.get('username'),
                'user_password':login_informations.get('password')
            }

            return scrapy.FormRequest(url=self.login_url, formdata=data, callback=self.check_login_response)