Re: ActionLink not Search Engine safe?
On Mon, 01 Aug 2011 14:15:43 -0300, PXZ pragprog...@gmail.com wrote: I have found a solution by making a custom link component in this way: Merge the sourcecode of the following classes: AbstractLink, AbstractComponentEventLink and ActionLink. Then modify the buildHref() method so that it simply returns #. Then you can use your custom component instead of the core ActionLink. Why don't you just subclass AbstractLink? No need to copy sources here. -- Thiago H. de Paula Figueiredo Independent Java, Apache Tapestry 5 and Hibernate consultant, developer, and instructor Owner, Ars Machina Tecnologia da Informação Ltda. http://www.arsmachina.com.br - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: ActionLink not Search Engine safe?
I have found a solution by making a custom link component in this way: Merge the sourcecode of the following classes: AbstractLink, AbstractComponentEventLink and ActionLink. Then modify the buildHref() method so that it simply returns #. Then you can use your custom component instead of the core ActionLink. -- View this message in context: http://tapestry.1045711.n5.nabble.com/ActionLink-not-Search-Engine-safe-tp4490777p4655695.html Sent from the Tapestry - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: ActionLink not Search Engine safe?
Taha Hafeez wrote: A link can be used for updates. As a developer it is our responsibility to ensure that such a link is only available to properly authenticated users. And what if the link action should be available for publicly non-authenticated users? For example a blogging website where everybody can post comments. Than actionlinks cannot be used. There no easy solution in Tapestry to solve this :( -- View this message in context: http://tapestry.1045711.n5.nabble.com/ActionLink-not-Search-Engine-safe-tp4490777p4651671.html Sent from the Tapestry - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: ActionLink not Search Engine safe?
On Sun, Jul 31, 2011 at 12:32 PM, PXZ pragprog...@gmail.com wrote: Taha Hafeez wrote: A link can be used for updates. As a developer it is our responsibility to ensure that such a link is only available to properly authenticated users. And what if the link action should be available for publicly non-authenticated users? For example a blogging website where everybody can post comments. Than actionlinks cannot be used. As Thiago said, you (the developer) are responsible of doing this. One solution is to check the user-agent header. Here is a list of common user agents http://www.robotstxt.org/db.html. You can get the user-agent header by injecting the Reqest in your page @Inject private Request request; and use String getHeader(String name); Also you can see all headers using ListString getHeaderNames(); Cheers, Dragan Sahpaski There no easy solution in Tapestry to solve this :( -- View this message in context: http://tapestry.1045711.n5.nabble.com/ActionLink-not-Search-Engine-safe-tp4490777p4651671.html Sent from the Tapestry - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: ActionLink not Search Engine safe?
Such links are submit links. Such a link has href='#' and submit form using javascript. As search engines follow href and don't execute javascript, these links are never followed. http://tapestry.apache.org/current/tapestry-core/ref/org/apache/tapestry5/corelib/components/LinkSubmit.html regards Taha On Sun, Jul 31, 2011 at 4:02 PM, PXZ pragprog...@gmail.com wrote: Taha Hafeez wrote: A link can be used for updates. As a developer it is our responsibility to ensure that such a link is only available to properly authenticated users. And what if the link action should be available for publicly non-authenticated users? For example a blogging website where everybody can post comments. Than actionlinks cannot be used. There no easy solution in Tapestry to solve this :( -- View this message in context: http://tapestry.1045711.n5.nabble.com/ActionLink-not-Search-Engine-safe-tp4490777p4651671.html Sent from the Tapestry - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: ActionLink not Search Engine safe?
Taha Hafeez wrote: Such links are submit links. Such a link has href='#' and submit form using javascript. As search engines follow href and don't execute javascript, these links are never followed. http://tapestry.apache.org/current/tapestry-core/ref/org/apache/tapestry5/corelib/components/LinkSubmit.html Thanks for the info. Is a LinkSubmit able to perform ajax calls? (I have searched for whether it supports ajax, but couldn't find it.) -- View this message in context: http://tapestry.1045711.n5.nabble.com/ActionLink-not-Search-Engine-safe-tp4490777p4652006.html Sent from the Tapestry - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: ActionLink not Search Engine safe?
You have to set the zone parameter of the enclosing form component for ajax submission On Sun, Jul 31, 2011 at 7:24 PM, PXZ pragprog...@gmail.com wrote: Taha Hafeez wrote: Such links are submit links. Such a link has href='#' and submit form using javascript. As search engines follow href and don't execute javascript, these links are never followed. http://tapestry.apache.org/current/tapestry-core/ref/org/apache/tapestry5/corelib/components/LinkSubmit.html Thanks for the info. Is a LinkSubmit able to perform ajax calls? (I have searched for whether it supports ajax, but couldn't find it.) -- View this message in context: http://tapestry.1045711.n5.nabble.com/ActionLink-not-Search-Engine-safe-tp4490777p4652006.html Sent from the Tapestry - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: ActionLink not Search Engine safe?
dragan.sahpas...@gmail.com wrote: One solution is to check the user-agent header. Here is a list of common user agents http://www.robotstxt.org/db.html. That could work, but it's not an option for me, because other unknown bots that mimic the browsers agent might cause problems. Taha Hafeez wrote: You have to set the zone parameter of the enclosing form component for ajax submission ActionLink doesn't require forms, but LinkSubmit unfortunately does. (I don't need forms.) I also tried making a custom component by extending ActionLink and overriding the href writing element, but Tapestry seems to shield developers from extending its components by making the writeLink method (in AbstractLink) final. -- View this message in context: http://tapestry.1045711.n5.nabble.com/ActionLink-not-Search-Engine-safe-tp4490777p4653448.html Sent from the Tapestry - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
ActionLink not Search Engine safe?
hi, I'm new to Tapestry. I was trying out the Vote Youtube tutorial/video, and looks like that ActionLink doesn't seem to be safe for search engines? The ActionLinks are rendered like this: /vote/index.vote/2 + Or when zone (Ajax) is disabled: /vote/index.vote/2 + The problem with this code is that the link changes server sided database state via a simple link click (so it's a non-idempotent request). This means that search engines and bots will change the database when they crawl/index the website. The positive side of this code is that it is a safety fallback for non-javascript clients. Is there a way to override the href attribute to # so that it is safe for search engines? Or is their another Tapestry component that is better suited for this problem? -- View this message in context: http://tapestry.1045711.n5.nabble.com/ActionLink-not-Search-Engine-safe-tp4490777p4490777.html Sent from the Tapestry - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: ActionLink not Search Engine safe?
On Wed, 15 Jun 2011 07:35:14 -0300, PXZ pragprog...@gmail.com wrote: hi, I'm new to Tapestry. Welcome! I was trying out the Vote Youtube tutorial/video, and looks like that ActionLink doesn't seem to be safe for search engines? The problem with this code is that the link changes server sided database state via a simple link click (so it's a non-idempotent request). This means that search engines and bots will change the database when they crawl/index the website. The positive side of this code is that it is a safety fallback for non-javascript clients. Your concern is correct, but IMHO this is something that should be handled by the developer, not by the framework itself. You are responsible for checking if the action requested can be done or not. You can check some logic in your page or component class before doing the action itself. Is there a way to override the href attribute to # so that it is safe for search engines? You can write a mixin or a MarkupRendererFilter for that. Or is their another Tapestry component that is better suited for this problem? No. But I think EventLink should be used instead of ActionLink anyway. An ActionLink is basically an EventLink which always trigger the 'action' event. -- Thiago H. de Paula Figueiredo Independent Java, Apache Tapestry 5 and Hibernate consultant, developer, and instructor Owner, Ars Machina Tecnologia da Informação Ltda. http://www.arsmachina.com.br - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: ActionLink not Search Engine safe?
A link can be used for updates. As a developer it is our responsibility to ensure that such a link is only available to properly authenticated users. Regards Taha Sent from my iPhone On Jun 15, 2011, at 5:24 PM, Thiago H. de Paula Figueiredo thiag...@gmail.com wrote: On Wed, 15 Jun 2011 07:35:14 -0300, PXZ pragprog...@gmail.com wrote: hi, I'm new to Tapestry. Welcome! I was trying out the Vote Youtube tutorial/video, and looks like that ActionLink doesn't seem to be safe for search engines? The problem with this code is that the link changes server sided database state via a simple link click (so it's a non-idempotent request). This means that search engines and bots will change the database when they crawl/index the website. The positive side of this code is that it is a safety fallback for non-javascript clients. Your concern is correct, but IMHO this is something that should be handled by the developer, not by the framework itself. You are responsible for checking if the action requested can be done or not. You can check some logic in your page or component class before doing the action itself. Is there a way to override the href attribute to # so that it is safe for search engines? You can write a mixin or a MarkupRendererFilter for that. Or is their another Tapestry component that is better suited for this problem? No. But I think EventLink should be used instead of ActionLink anyway. An ActionLink is basically an EventLink which always trigger the 'action' event. -- Thiago H. de Paula Figueiredo Independent Java, Apache Tapestry 5 and Hibernate consultant, developer, and instructor Owner, Ars Machina Tecnologia da Informação Ltda. http://www.arsmachina.com.br - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
