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Thursday, 3 November 2011

Create your own custom tld in Liferay at Portal Level.


If you are here that means you already know what is a TLD(Top Level Definition).
To include a TLD in Liferay at root level or you can say a portal level tld, you can follow the steps which will help you to create one on your own.

1. Create a hook name mytld.
2. Create mytld.jsp at /docroot/web-inf/jsps/html/taglib/ui/mytld/mytld.jsp.
3. Create an ext named mytld ext.
4. Move to web.xml by /docroot/web-inf/ext-web/docroot/web-inf/web.xml in ext.
5. Put below lines in web.xml.



<?xml version="1.0"?>

<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

<jsp-config>
<taglib>
<taglib-uri>http://liferay.com/tld/ui-ext</taglib-uri>
<taglib-location>/WEB-INF/tld/liferay-fc.tld</taglib-location>
</taglib>
</jsp-config>

</web-app>



6. Create a corresponding java class for ur taglib(if required) at /docroot/web-inf/ext-util-taglib/src/com/liferay/taglib/ui/MyTld.java in ext.
7. Write required code.
8. Move to /docroot/web-inf/ext-web/docroot/web-inf/tld/liferay-fc.tld.
9. Put below lines in liferay-fc.tld.


<?xml version="1.0" encoding="UTF-8"?>

<taglib>
    <tlib-version>1.0</tlib-version>
    <jsp-version>1.1</jsp-version>
    <short-name>my-tld</short-name>
    <uri>http://liferay.com/tld/my-tld</uri>
    <tag>
            <name>foodcourt-discussion</name>
            <tag-class>com.liferay.taglib.ui.FoodCourtDiscussionTag</tag-class>
            <body-content>JSP</body-content>
            <attribute>
                <name>attribute-name1</name>
                <required>true</required>
                <rtexprvalue>true</rtexprvalue>
            </attribute>
            <attribute>
                <name>attribute-name2</name>
                <required>true</required>
                <rtexprvalue>true</rtexprvalue>
            </attribute>
    </tag>
</taglib>


10. Deploy your ext.
11.Deploy your hook.
12.Restart your server.
12.Your new tld is ready to use.


Please let me know, if there is any concern about this Blog.

10 comments:

  1. thanks for sharing such nice information regarding above topic, Really its very useful for everything. Keep writing some more interesting topics as above.liferay training | liferay development

    ReplyDelete
  2. Hi, I am new to Liferay and I tried the above steps to create a new tld for my project. I try to use the newly created tld in a new portlet, but when defining the taglib I get the following error: The absolute uri: http://liferay.com/tld/my-tld cannot be resolved in either web.xml or the jar files deployed with this application. Can you please help me fix this error? Thank you

    ReplyDelete
  3. Have you define tld in your web.xml or jsp file?
    e.g. in jsp you can do this by
    <%@ taglib uri="http://liferay.com/tld/my-tld" prefix="my" %>
    or in web.xml as per taglib description!

    ReplyDelete
  4. Thank you for your reply, I figured out eventually. I had to import the tld file in my portlet.

    ReplyDelete
  5. Hi
    Please tell me attribute-name1 refer to what in java class , can u please list a java sample class?
    Thank you

    ReplyDelete
  6. Hi,

    attribute-name1 will refer to java bean name.
    Please let me know your email id so i can send you the java class example.

    ReplyDelete
  7. When I include my custom tld in liferay-plugin-package.properties I get the following error:
    ERROR [com.liferay.portal.kernel.deploy.auto.AutoDeployScanner][BaseDeployer:345] Unable to copy portal TLD myTld.tld

    Any suggestions?

    ReplyDelete
  8. Could you please provide the sample java for the same ?

    ReplyDelete
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    ReplyDelete
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    ReplyDelete

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