The master request is the one that comes from the original user; the subrequest is the one that you do internally — either with the forward()
method of HttpKernel
— or by the forward()
helper of the framework's Controller
class — or {% render ... %}
in Twig.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…