This tag modifies src-attribute.

This tag modifies href-attribute.

This tag modifies action-attribute.

This tag defines local variables to use in multiple places.

Access portlet preferences - PortletPreferences.

Following names are reserved for internal use:

portletId - Id of the portlet where request will be sent. Default is current portlet.

portletIdPref - Id of the portlet from PortletPreferences.

plid - Portlet Layout ID. Default is current portlet plid.

portletUrl - Gets plid from portlet relative url.

portletUrlPref - Portlet relative url from PortletPreferences.

lifecycle - Defines portlet lifecycle to be used. Allowed values are javax.portlet.PortletRequest constants: (ACTION_PHASE, RESOURCE_PHASE, RENDER_PHASE, EVENT_PHASE). Default is RENDER_PHASE.

windowState - Which window state will the URL point to. Allowed values are javax.portlet.WindowState and com.liferay.portal.kernel.portlet.LiferayWindowState constants: (NORMAL, MAXIMIZED, MINIMIZED, EXCLUSIVE, POP_UP). Default is NORMAL.

portletMode - Mode of the portlet. Allowed values are javax.portlet.PortletMode and com.liferay.portal.kernel.portlet.LiferayPortletMode constants: (VIEW, EDIT, HELP, ABOUT, CONFIG, EDIT_DEFAULTS, EDIT_GUEST, PREVIEW, PRINT). Default is VIEW.

action - Shortcut for javax.portlet.action=YOUR_VALUE, lifecycle=ACTION_PHASE.

resource - Shortcut for p_p_id=YOUR_VALUE, lifecycle=RESOURCE_PHASE.

Every other parameter given will be sent to portlet as query parameter.

<a href="#" liferay:href="var1='value', var2=${definedVariable}, lifecycle='ACTION_PHASE'">
    Link
</a>

var1 and var2 are parameters to be sent to action phase of current portlet. Lifecycle defines that the request will be action request.

<p liferay:withUrl="myurl=${ {windowState='maximized', portletMode='edit'} }, save=${ { action:'save' } }">
    <a href="${myurl}">Open edit in maximized window</a>
    <a href="${save}">Save current portlet state</a>
</p>

<a href="#" liferay:href="action='find', var1=${definedVariable}">Link</a>

Above is only simplified form of:

<a href="#" liferay:href="javax.portlet.action='find', var1=${definedVariable}, lifecycle='ACTION_PHASE'">Link</a>