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---+!! Subweb and topic names - conflicts, view URLs, and links If your TWiki installation has the hierarchical webs feature turned on, you face subtle issues about subweb (web inside a web) and topic names. If you are unfamiliar with subwebs, please read ManagingWebs#Hierarchical_Webs. TWiki 5.1.2 has introduced measures to take care of those issues. As such, in this topic "in the past" means 5.1.1 and earler; "now" means 5.1.2 and later. ---++ Avoiding conflicts of subweb and topic names If the topic =AaAa.BbB= exists, the subweb =AaAa/BbBb= must not exist. If they co-exist, when the topic !AaAa.BbBb is moved, all topics of the =AaAa/BbBb= subweb lose all attachments. This is because =AaAa.BbBb= topic's attachments are stored in the directory =.../pub/AaAa/BbBb/= while =AaAa/BbBb= subweb's topics have their attachments in the directory =.../pub/AaAa/BbBb/TOPIC/=. When =AaAa.BbBb= topic is renamed to =AaAa.CcCc=, =.../pub/AaAa/BbBb= directory is renamed to =.../pub/AaAa/CcCc=, which causes =AaAa/BbBb= subweb to lose its all attachments. In the past there was no mechanism to avoid clash of subweb and topic names. But now you cannot create a subweb whose name clashes with an existing topic name and vice versa. Renaming of topics and webs have name clash detection and avoidance logics. ---++ View URLs Let's say there is a subweb named =AaAa/DdDd=. In the past https:<nop>//twiki.example.com/cgi-bin/view/AaAa/DdDd led to the "This topic does not exist" page. But now it causes redirecttion to https:<nop>//twiki.example.com/cgi-bin/view/AaAa/DdDd/WebHome. Even now, =AaAa.BbBb= topic and =AaAa/BbBb= subweb may co-exist as a legcy from an old version. In that case, https:<nop>//twiki.example.com/cgi-bin/view/AaAa/BbBb shows !AaAa.BbBb topic while https:<nop>//twiki.example.com/cgi-bin/view/AaAa/BbBb/ shows the home page of the =AaAa/BbBb= subweb. ---++ Links on topics =TopicName=, =WebName.TopicName=, =[<nop>[TopicName][...]]=, and =[<nop>[WebName.TopicName][...]]= become links to the specified topics. If =TopicName= is actually a subweb name rather than a topic name, those links point to =WebHome= of the subweb. This may sound strange to a long term TWiki user. If a subweb =AaAa/DdDd= exists, on the topic =AaAa.EeEe=, =DdDd= and =[<nop>[DdDd]]= become links to =AaAa/DdDd.WebHome=. You can link to a subweb in a relative manner. The old behavior was to make a link to create the "missing topic" =AaAa.DdDd=. This is wrong for sure. And they have to become links - otherwise the label in =[<nop>[link][label]]= goes nowhere. If so, there is no other link destination than =WebHome= of the subweb. __Related Topics:__ AdminDocumentationCategory
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Topic revision: r1 - 2012-09-26
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