How to hide Login when user is logged on in web2py? -

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मेरे पास नेविगेशन के साथ ऐसा पृष्ठ है 

  & lt; ul class = "नेविगेशन" & gt; & Lt; li & gt; & lt; एक वर्ग = "होम" href = "index.html" & gt; होम & lt; / a & gt; & lt; / li & gt; & Lt; li & gt; & lt; एक वर्ग = "के बारे में" href = "about.html" & gt; इसके बारे में & lt; / a & gt; & lt; / li & gt; & Lt; li & gt; & lt; एक वर्ग = "उत्पाद" href = "products.html" & gt; उत्पाद & lt; / a & gt; & lt; / li & gt; & Lt; li & gt; & lt; एक वर्ग = "संपर्क करें" href = "contact.html" & gt; संपर्क & lt; / a & gt; & lt; / li & gt; & Lt; li & gt; & lt; एक वर्ग = "बुकिंग" href = "bookings.html" & gt; बुकिंग & lt; / a & gt; & lt; / li & gt; & Lt; li & gt; & lt; एक वर्ग = "लॉगिन" href = "user.html" id = "लॉगिन" & gt; लॉगिन & lt; / a & gt; & lt; / li & gt;

लॉगिन सिस्टम डिफ़ॉल्ट एथ द्वारा किया जाता है अगर उपयोगकर्ता ने लॉग ऑन किया है तो मैं लॉगिन लिंक छिपाने की कोशिश कर रहा हूं। मुझे यकीन नहीं है कि यह क्लाइंट साइड या सर्वर साइड में करने की आवश्यकता है और मैं इस बारे में web2py पुस्तक में कोई मदद नहीं ढूंढ सकता। किसी भी मदद कृपया? 

  {{auth.user नहीं अगर:}} & lt; li & gt; & Lt; एक वर्ग = "लॉगिन" href = "user.html" id = "लॉगिन" & gt; लॉगिन & lt; / a & gt; & lt; / li & gt; {{Pass}}

उपर्युक्त लिंक को सशर्त रूप से शामिल किया जाएगा, केवल तभी जब कोई लॉग इन उपयोगकर्ता नहीं होगा लॉग इन किए गए मामले में, आप "लॉगआउट" लिंक भी शामिल कर सकते हैं।


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