Thanks that worked, now to integrate this into the program, the blog is
now ready to use, one step at a time, this CMS is coming together,
thanks for all the help.
On Tue, 2014-03-11 at 10:35 +0400, Nagaev Boris wrote:
> Hello,
>
>
>
> you can get hostname using Request::headerValue("Host").
>
> env.hostName() does not work, because you have no WEnvironment and
> WApplication objects in handleRequest() of global resource.
>
>
>
>
> On Tue, Mar 11, 2014 at 9:43 AM, Jeffrey Scott Flesher Gmail
> <jeffrey.scott.fles...@gmail.com> wrote:
>
> In function handleRequest, const Wt::Http::Request &request
> has several options, but none seem to return the URL,
> request.serverName() returns the server name, which is not the
> URL, so how do I get the URL name if I can not use
> env.hostName()?
>
> I noticed that if URL is not passed in, you have an if to fill
> it like this:
> url = request.urlScheme() + "://" + request.serverName();
> but this would not work, unless the serverName was the same as
> the URL, which it never will in my case, so it lead me to
> believe this was the URL, which is why I started off my first
> request as how to get the URL, but I was not finished with
> that email, and hit send instead of save, sorry again for the
> confusion.
>
> Thanks for any help.
>
>
>
> On Mon, 2014-03-10 at 15:32 +0400, Nagaev Boris wrote:
>
> > Hello,
> >
> > > addChild(&rssFeed);
> >
> > you should not use addChild with objects created on stack.
> > addChild must be applied to dynamicaly allocated objects.
> >
> >
> > You should create resource, wApp->addChild(resource) to
> > prevent memory leak of resouce object. Then set internal
> > path.
> >
> >
> > But for RSS, you should not bind resource object to
> > application at all. Create server-wide resource, call
> > server->addResource. In handleRequest, determine domain and
> > use correct database connection object. You can pre-create
> > database connections in pools (one pool per each domain).
> > Database session object would be created and destroyed in
> > handleRequest (make it a stack object).
> >
> >
> > Something like std::map<domain, dbo connection pool>.
> >
> > Make sure you do not change this global object (map) from
> > handleRequest, because multiple simultaneous handleRequest
> > calls may exist. That is why it is important to create all
> > pools before start of event loop.
> >
> >
> > On Mon, Mar 10, 2014 at 3:13 AM, Jeffrey Scott Flesher Gmail
> > <jeffrey.scott.fles...@gmail.com> wrote:
> >
> > I am trying to write a CMS, my idea of how to handle
> > multiple domains was to create an XML file which I
> > read in the constructor of home in the wt-home
> > example, so it uses the env.hostName() to get the
> > name of the key id, if it fails to find a key id, it
> > will use a default or just return a 404 error, so I
> > do not see a security risk here, all that a user can
> > do by modifying the header, is to return the wrong
> > results, unless they knew the keys, all they would
> > get is a default page or 404 error.
> >
> > File looks like this:
> > <?xml version="1.0" encoding="ISO-8859-1" ?>
> > <domains>
> > <domain id="default" path="/home/path/default"
> > title="Title" user="userName" password="Password"
> > port="5432" dbname="dbName" rssTitle="blog Title"
> > rssURL="http://tdl.domain.com/wt/blog";
> > rssDescription="Description of rss feed"></domain>
> > <domain id="localhost"
> > path="/home/path/localhost" title="Title"
> > user="userName" password="Password" port="5432"
> > dbname="dbName" rssTitle="blog Title"
> > rssURL="http://localhost/wt/blog";
> > rssDescription="Description of rss feed"></domain>
> > <domain id="tdl.domain.com"
> > path="/home/path/tdl.domain.com" title="Title"
> > user="userName" password="Password" port="5432"
> > dbname="dbName" rssTitle="blog Title"
> > rssURL="http://tdl.domain.com/wt/blog";
> > rssDescription="Description of rss feed"></domain>
> > </domains>
> >
> > This file is stored in appRoot, so its not
> > accessible to the public, and where database details
> > will work for any support database type.
> >
> > I read the results into a struct called MyCmsDomain
> > which I use use to create the database connection
> > and rssFeed:
> > QString filePath = appRoot().c_str();
> > filePath.append("domains.xml");
> > if (!readDomains(env.hostName().c_str(),
> > filePath))
> > {
> > if (!readDomains("default", filePath))
> > {
> > return; // this should give a blank
> > screen, how to fix, just a 404 error
> > }
> > }
> > ...
> > #ifdef POSTGRES
> > // Wt::Dbo::SqlConnectionPool *blogDb
> > blogDb_ =
> > BlogSession::createConnectionPool("user=" +
> > MyCmsDomain.user + " password=" +
> > MyCmsDomain.password + " port=" + MyCmsDomain.port +
> > " dbname=" + MyCmsDomain.dbname);
> > ...
> >
> > BlogRSSFeed rssFeed(*blogDb_, MyCmsDomain.rssTitle,
> > MyCmsDomain.rssURL, MyCmsDomain.rssDescription);
> >
> > I don't see any examples of using addChild, how do I
> > do this exactly?
> >
> > addChild(&rssFeed);
> >
> > > Use WResource::setInternalPath to set internal
> > path for this resource.
> > internalPathChanged().connect(this,
> > &BlogRSSFeed::handleRequest);
> > handleRequest is the only function, and does not
> > appear to have the right parameters, do I need
> > another one to handle this?
> >
> > Not sure how this would work, can you give me an
> > example?
> >
> > Thanks for all the help.
> >
> >
> > On Mon, 2014-03-10 at 02:00 +0400, Nagaev Boris
> > wrote:
> >
> > > Hello!
> > >
> > > > How do I bind the resource to the session, is there a
> function like
> > > > addResource that does the same thing?
> > > You can do this using application->addChild(resource)
> (this makes
> > > application to delete resource when it is deleted, normal
> memory
> > > management). Use WResource::setInternalPath to set
> internal path for
> > > this resouce. Please note the resouce will be available
> only from
> > > current session in this case.
> > >
> > > > In my case I use the environment env.hostName() to get
> the database
> > > > connection, so this causes me to change where I need to
> add this resource.
> > > env.hostName() is hostname passed in Host HTTP header.
> Why do you need
> > > it to connect to your database? Using Host header to
> determine
> > > database address may be dangerous, since everyone can
> tamper with Host
> > > header making your Wt application to connect to wrong
> database server.
> > > Wt application should know database connection parameters
> itself.
> > >
> > > On Mon, Mar 10, 2014 at 1:39 AM, Jeffrey Scott Flesher
> Gmail
> > > <jeffrey.scott.fles...@gmail.com> wrote:
> > > >> If you want session-specific resource, you should bind
> it to session
> > > >> (parent with application object and use
> WResource::url() to get URL.
> > > > How do I bind the resource to the session, is there a
> function like
> > > > addResource that does the same thing?
> > > >
> > > >
> > > >> If you need database session for you resource, this
> session object should
> > > >> be created along with the resource.
> > > > In my case I use the environment env.hostName() to get
> the database
> > > > connection, so this causes me to change where I need to
> add this resource.
> > > >
> > > > Thanks for any help.
> > > >
> > > >
> > > > On Sun, 2014-03-09 at 11:23 +0400, Nagaev Boris wrote:
> > > >
> > > > Hello,
> > > >
> > > > at least, you should not change WServer from
> WApplication. Methods
> > > > addResource and addEntryPoint should be called before
> server start
> > > > (WServer::start()). If you want session-specific
> resource, you should
> > > > bind it to session (parent with application object and
> use
> > > > WResource::url() to get URL. If you want server-global
> resource, you
> > > > should initialize it and bind to server using
> addResource BEFORE
> > > > server start. If you need database session for you
> resource, this
> > > > session object should be created along with the
> resource.
> > > >
> > > > Regards,
> > > > Boris Nagaev
> > > >
> > > >
> > > > On Sun, Mar 9, 2014 at 4:50 AM, Jeffrey Scott Flesher
> Gmail
> > > > <jeffrey.scott.fles...@gmail.com> wrote:
> > > >> Moving the code in example wt-home from main into the
> home which is
> > > >> derived
> > > >> from WApplication, in order to setup the database
> based on URL, I found
> > > >> this
> > > >> crashes the system randomly, here is the Code:
> > > >>
> > > >> BlogRSSFeed rssFeed(*blogDb_, "Witty Wizard blog",
> > > >> "http://wittywizard.org/wt/blog";, "Witty Wizard
> Content Management System
> > > >> (CMS)");
> > > >> env.server()->addResource(&rssFeed, "/wt/blog/feed/");
> > > >>
> > > >> Is this the correct way to call addResource from the
> Constructor of home?
> > > >>
> > > >> Thanks for any help.
>
>
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