[erlyweb-list] Re: s and other non-component data</span></a></span> </h1> <p class="darkgray font13"> <span class="sender pipe"><a href="/search?l=erlyweb@googlegroups.com&q=from:%22Bryan+Fink%22" rel="nofollow"><span itemprop="author" itemscope itemtype="http://schema.org/Person"><span itemprop="name">Bryan Fink</span></span></a></span> <span class="date"><a href="/search?l=erlyweb@googlegroups.com&q=date:20071116" rel="nofollow">Fri, 16 Nov 2007 18:09:06 -0800</a></span> </p> </div> <div itemprop="articleBody" class="msgBody"> <!--X-Body-of-Message--> <pre> On Nov 16, 6:24 pm, David King <[EMAIL PROTECTED]> wrote: > > - A while ago somebody asked a similar question and Bryan Fink > > suggested returning a tuple of the form {title, Title} from the view > > function, and then later picking up this tuple in the > > html_container_controller and using its value to set the <title> tag. > > That does only take into account <title>s, and not any other > metadata. And doesn't using erltl preclude returning something useful > from a view function other than the data itself? And then the > component receiving the rendered page would have to walk the > resultant IOlist looking for it, rather than being able to pattern- > match it. That just seems very brittle.</pre><pre> Yeah, it is a bit brittle. But, some tips: 1. If you need to return several things for the container to find, just use more tuples. I have {title, X}, {head, X}, {onload, X}, etc. 2. ErlTl works just fine with this. The code looks like: <%@ index(Beer) %> <% {title, ["BeerRiot - ", beer:name(Beer)]} %> <% {head, <<"<script>...</script>">>} %> 3. My container controller picks each of these piece out using two rules: a. all such tuples must be at the start of the rendered data b. all such tuples must be in a defined order So, the container code looks roughly like: index(Data) -> case Data of [{title, Title} | TData] -> ok; TData -> Title = "BeerRiot" end, case TData of [{head, Head} | HData] -> ok; HData -> Head = <<>> end ... {data, {Title, Head, OtherData}}. I have to play a few more tricks, though, to account for newlines in the rendered Data list. That could be fixed by moving the ErlTl statements all to one line, but it didn't seem important enough to worry about. So, that restricts using these tuples to the "top level" component view, but it has worked pretty well for me so far. The idea of adding a {meta, X} tuple to the list of things a controller can return sounds interesting, but since this stuff is more on the view side, it also seems a little out of place. Not to say that my hack isn't further out of place, of course. ;) -Bryan P.S. If you think the idea of a beer_controller is great, you'll love that I also have a beer_container_controller, but only because I couldn't decide among bottle_controller, can_controller, and keg_controller. :) --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "erlyweb" group. To post to this group, send email to erlyweb@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at <a rel="nofollow" href="http://groups.google.com/group/erlyweb?hl=en">http://groups.google.com/group/erlyweb?hl=en</a> -~----------~----~----~----~------~----~------~--~--- </pre> </div> <div class="msgButtons margintopdouble"> <ul class="overflow"> <li class="msgButtonItems"><a class="button buttonleft " accesskey="p" href="msg00123.html">Previous message</a></li> <li class="msgButtonItems textaligncenter"><a class="button" accesskey="c" href="index.html#00108">View by thread</a></li> <li class="msgButtonItems textaligncenter"><a class="button" accesskey="i" href="maillist.html#00108">View by date</a></li> <li class="msgButtonItems textalignright"><a class="button buttonright buttondisabled" accesskey="n" href="#">Next message</a></li> </ul> </div> <a name="tslice"></a> <div class="tSliceList margintopdouble"> <ul class="icons monospace"> <li class="icons-email"><span class="subject"><a href="msg00106.html">[erlyweb-list] Re: <title>s and other non-component data</a></span> <span class="sender italic">Yariv Sadan</span></li> <li><ul> <li class="icons-email"><span class="subject"><a href="msg00107.html">[erlyweb-list] Re: <title>s and other non-component...</a></span> <span class="sender italic">David King</span></li> <li><ul> <li class="icons-email"><span class="subject"><a href="msg00110.html">[erlyweb-list] Re: <title>s and other non-compo...</a></span> <span class="sender italic">Yariv Sadan</span></li> <li><ul> <li class="icons-email"><span class="subject"><a href="msg00113.html">[erlyweb-list] Re: <title>s and other non-c...</a></span> <span class="sender italic">David King</span></li> <li><ul> <li class="icons-email"><span class="subject"><a href="msg00116.html">[erlyweb-list] Re: <title>s and other n...</a></span> <span class="sender italic">Yariv Sadan</span></li> <li class="icons-email"><span class="subject"><a href="msg00118.html">[erlyweb-list] Re: <title>s and other n...</a></span> <span class="sender italic">David King</span></li> <li class="icons-email"><span class="subject"><a href="msg00119.html">[erlyweb-list] Re: <title>s and other n...</a></span> <span class="sender italic">Yariv Sadan</span></li> <li class="icons-email"><span class="subject"><a href="msg00120.html">[erlyweb-list] Re: <title>s and other n...</a></span> <span class="sender italic">David King</span></li> <li class="icons-email"><span class="subject"><a href="msg00121.html">[erlyweb-list] Re: <title>s and other n...</a></span> <span class="sender italic">David King</span></li> <li class="icons-email"><span class="subject"><a href="msg00123.html">[erlyweb-list] Re: <title>s and other n...</a></span> <span class="sender italic">Yariv Sadan</span></li> </ul></li> </ul></li> </ul></li> </ul></li> <li class="icons-email tSliceCur"><span class="subject">[erlyweb-list] Re: <title>s and other non-component data</span> <span class="sender italic">Bryan Fink</span></li> </ul> </ul> </ul> </ul> </div> <div class="overflow msgActions margintopdouble"> <div class="msgReply" > <h2> Reply via email to </h2> <form method="POST" action="/mailto.php"> <input type="hidden" name="subject" value="[erlyweb-list] Re: <title>s and other non-component data"> <input type="hidden" name="msgid" value="e7c033e1-1e46-4585-8738-c1f72f71ab95@d61g2000hsa.googlegroups.com"> <input type="hidden" name="relpath" value="erlyweb@googlegroups.com/msg00108.html"> <input type="submit" value=" Bryan Fink "> </form> </div> </div> </div> <div class="aside" role="complementary"> <div class="logo"> <a href="/"><img src="/logo.png" width=247 height=88 alt="The Mail Archive"></a> </div> <form class="overflow" action="/search" method="get"> <input type="hidden" name="l" value="erlyweb@googlegroups.com"> <label class="hidden" for="q">Search the site</label> <input class="submittext" type="text" id="q" name="q" placeholder="Search erlyweb"> <input class="submitbutton" name="submit" type="image" src="/submit.png" alt="Submit"> </form> <div class="nav margintop" id="nav" role="navigation"> <ul class="icons font16"> <li class="icons-home"><a href="/">The Mail Archive home</a></li> <li class="icons-list"><a href="/erlyweb@googlegroups.com/">erlyweb - 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