Thanks for the advice - i didn't know this stuff existed. I was just pondering how to implement logic like if ! A || ( A && B )
And had trouble seeing how to write some reasonable code Thanks -----Original Message----- From: Jacob Hookom [mailto:[EMAIL PROTECTED]] Sent: Monday, February 10, 2003 11:50 PM To: 'Struts Users Mailing List' Subject: RE: Newbie Question This is illegal (you can't embed tags as attributes): <logic:equal name="component" property="name" scope="page" value="<bean:write name="navigateForm" property="component"/>"> If you must use logic such as this, do yourself a favor and switch to JSTL :-) <c:forEach var="component" items="${components}"> <c:if test="${component.name == navigateForm.component}"> <tr> <td colspan="2" align="left"> <c:out value="${component.name}" /></td> </tr> </c:if> </c:forEach> http://jakarta.apache.org/taglibs/doc/standard-doc/intro.html I can't say enough about JSTL. With Struts and JSTL, the only Struts tags you should ever use are the html:form tags and possibly bean:message. -Jacob | -----Original Message----- | From: Ray Madigan [mailto:[EMAIL PROTECTED]] | Sent: Tuesday, February 11, 2003 1:23 AM | To: Struts Users Mailing List | Subject: RE: Newbie Question | | Here is my new code: | | ArrayList components = ( ArrayList ) service.gatherAccessory | Bean.getContainer ( ) ); | request.setAttribute ( "components", components ); | | the jsp: | <logic:iterate id="component" name="components" scope="request" > | <logic:equal name="component" property="name" scope="page" | value="<bean:write name="navigateForm" | property="component"/>"> | <tr> | <td COLSPAN="2"align="left"> | <bean:write name="component" property="name" filter="false"/> | </td> | </tr> | </logic:equal> | </logic:iterate> | | I get the ServletException: | Cannot find bean container in any scope | | If I remove the <tr><td><bean:write: .../></td></tr> | It is fine -doesn't fault - doesn't write anything | | If I remove the <logic:equal ...></logic:equal> | It will iterate the list only once. | I have print statements in the Action | | Im stumped? Any Ideas | | I will try Struts 1.0.2 - Except the examples seem to work :-) | | Thanks for your help | Ray Madigan | | -----Original Message----- | From: Jacob Hookom [mailto:[EMAIL PROTECTED]] | Sent: Monday, February 10, 2003 10:24 PM | To: 'Struts Users Mailing List' | Subject: RE: Newbie Question | | | ArrayList components = (ArrayList) service | | .gatherAccessory(Bean.getContainer()); | | session.setAttribute("someKey", components); | | -or- | request.setAttribute("someKey", components); | | | <!-- jsp --> | | <logic:iterate id="item" name="someKey" scope="session"> //or request | scope | <bean:write name="item" property="name" /><br /> | </logic:iterate> | | -Jacob | | | -----Original Message----- | | From: Ray Madigan [mailto:[EMAIL PROTECTED]] | | Sent: Tuesday, February 11, 2003 12:06 AM | | To: Struts Users Mailing List | | Subject: Newbie Question | | | | Greetings: | | | | I am new to struts, and i have a question that has been giving me fits | all | | day. | | | | I have a large application I am attempting to rewrite in struts, with | | several hundred jsp's and servlets. It currently runs on Tomcat. I am | | using, don't all of you laugh at once, 1.1-b3. | | | | I haveured out some of how struts works from reading the samples and | | groping | | throught the code, but i can't seem to figure out how to make | | logic:iterate | | work. Here are a couple oc code fragments, if someone could point out | | where | | i'm a bonehead, i would appreciate it. | | | | In the Action class: | | ArrayList components = ( ArrayList ) service.gatherAccessory | | Bean.getContainer ( ) ); | | // Error checking and logging etc | | if ( components != null && components.size ( ) > 0 ) { | | System.out.println ( "Nav: Comp: " + components.size ( ) ); | | //txSupport component = new txSupport ( ); | | //session.setAttribute ( Constants.COMPONENT_KEY, components.get | | ( 1 ) ); | | //session.setAttribute ( Constants.COMPONENTS_KEY, | | components.toArray ( as ) ); | | session.setAttribute ( component, components.get ( 0 ) ); | | navForm.setComponents ( components ); | | } | | | | I have tried several alternatives as to how to set the id attribute: | | - an empty instance of the Bean that is contained in the collection | | - the first element in the array | | I have tried to set the name property of the iterate to an array | | all with different errors. The one that worked the best was when | | I pointed the id property of iterate to the first element of the | | Collection. Here i simply got the iterator to iterate the first | | element. In the Action class I have iterated the Collection and | | there are three elements in the list. | | | | In the jsp: | | | | <logic:iterate id="component" name="navigateForm" | property="components" | | > | | | | <tr> | | <td COLSPAN="2"align="left"> | | <bean:write name="component" property="support" filter="true"/> | | </td> | | </tr> | | | | </logic:iterate> | | | | The navigateForm has a pair of methods get/setComponents that return the | | Collection. If I put a logic:equal and test a member of the iteration | it | | works in all cases. | | | | I am very perplexed by this situation and any light shed on the problem | | would be appreciated. | | | | Thanks in advance | | Ray Madigan | | | | | | --------------------------------------------------------------------- | | To unsubscribe, e-mail: [EMAIL PROTECTED] | | For additional commands, e-mail: [EMAIL PROTECTED] | | | --------------------------------------------------------------------- | To unsubscribe, e-mail: [EMAIL PROTECTED] | For additional commands, e-mail: [EMAIL PROTECTED] | | | --------------------------------------------------------------------- | To unsubscribe, e-mail: [EMAIL PROTECTED] | For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
