----- Original Message ----- From: "Corey Klaasmeyer" <[EMAIL PROTECTED]> To: "'Struts Users Mailing List'" <[EMAIL PROTECTED]> Sent: Thursday, February 21, 2002 4:09 AM Subject: RE: ActionForm and default values
> This is probably a common question, which should have a corresponding FAQ > 'How do I pre-populate an HTML form using ActionForm?' I think the answer is > you either set the values in the constructor of your ActionForm subclass > implementation, but this wasn't immediately obvious to me either. You can > infer the answer from this paragraph the user guide: What use is this if your prepopulation data comes from the session or application (ServletContext) objects? You don't have access to either from the form beans constructor. > "The form tag renders an HTML <form> element, based on the specified > attributes. It also associates all of the fields within this form with a > session scoped FormBean that is stored under the key logonForm. The Struts > developer provides the Java implementation of this form bean, subclassing > the Struts class ActionForm. This bean is used to provide initial values for > all of the input fields that have names matching the property names of the > bean. If an appropriate bean is not found, a new one will be created > automatically, using the specified Java class name." > > I think you can specify non-dynamic values for a form bean in the > struts-config file if you extend DynaActionForm: > > * Use the standard class "org.apache.struts.action.DynaActionForm", > which will be populated with properties defined by <form-property> > elements nested inside the <form-bean> element. Note that you can > also set initial values in the <form-property> element; these are > used in the default implementation of reset(). Intelligent defaults > take care of the most common cases. Note that the default validate() > method does NO checking, so you will need to do everything in your > Action. > > Corey > > -----Original Message----- > From: Jim Crossley [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, February 20, 2002 10:38 AM > To: Struts Users Mailing List > Subject: Re: ActionForm and default values > > > Ian Beaumont <[EMAIL PROTECTED]> writes: > > > Ok - I want to select an item on one page which will take me to > > another page where I can edit the selected item. > > Sounds common enough. > > > How do I pre-populate the form for the edit page in the action for > > the selected item as the form won't exist at this point? > > As long as you have the "name" attribute set correctly for the > appropriate <action> element of struts-config, the formbean will > always exist! The controller servlet creates it for you. > > -- Jim > > > -----Original Message----- > > From: Jim Crossley [mailto:[EMAIL PROTECTED]] > > Sent: 20 February 2002 16:06 > > To: Struts Users Mailing List > > Subject: Re: ActionForm and default values > > > > > > It's pretty simple, I think. > > > > 1) The formbean is passed to the action's perform method by the Struts > > controller. > > > > 2) The action populates the formbean (ReportDataForm) from the value > > object (ReportData). > > > > 3) The action returns the appropriate ActionForm to render the view. > > > > 4) The view (ReportData.jsp) need look no more complicated than this: > > > > <html:form action="/reportAction"> > > <html:text property="reportName"/> > > </html:form> > > > > -- Jim > > > > Ian Beaumont <[EMAIL PROTECTED]> writes: > > > > > This question seems to be going around and around this mailing list > > and > > > no > > > one has produced an answer. > > > > > > -----Original Message----- > > > From: Dua, Amit [mailto:[EMAIL PROTECTED]] > > > Sent: 20 February 2002 15:46 > > > To: 'Struts Users Mailing List' > > > Cc: '[EMAIL PROTECTED]' > > > Subject: RE: ActionForm and default values > > > > > > > > > But then how will I set the default values > > > > > > amit > > > > > > -----Original Message----- > > > From: Keith [mailto:[EMAIL PROTECTED]] > > > Sent: Wednesday, February 20, 2002 10:36 AM > > > To: Struts Users Mailing List > > > Subject: Re: ActionForm and default values > > > > > > > > > try removing the value= attribute from your <html: text. > > > hope that helps. > > > > > > --- "Dua, Amit" <[EMAIL PROTECTED]> wrote: > > > > Hi > > > > > > > > I want to populate my page with default value > > > > > > > > So, in order to do that > > > > I have a value object (ReportData), ReportDataForm (Form Bean) > > > > > > > > I populate the Value object through one of the Action classes and > > then > > > do > > > a > > > > Action Forward to one of the Jsp namely ReportData.jsp > > > > > > > > In the ReportData.jsp I do following > > > > > > > > ReportData reoportData = > > > (ReportData)request.getAttribute("reportdata"); > > > > <html:form action="reportAction.do"> > > > > <html:text property="reportName" > > > value="<%=reportData.getReportName()%>"/> > > > > .................. > > > > .............. > > > > > > > > > > > > I do all the validation In ReportAction class which is mapped to > > > > reportAction.do > > > > > > > > But when there is an error In the field , I am not able to get the > > > value > > > > populated for the text field. > > > > > > > > > > > > Is there something wrong I am doing. > > > > Or is there any other better way of doing this thing.. > > > > > > > > > > > > Amit > > > > > > > > > > > > -- > > > > To unsubscribe, e-mail: > > > <mailto:[EMAIL PROTECTED]> > > > > For additional commands, e-mail: > > > <mailto:[EMAIL PROTECTED]> > > > > > > > > > > > > > ===== > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > Search the archive:- > > > http://www.mail-archive.com/struts-user%40jakarta.apache.org/ > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > Keith Bacon - Looking for struts work - South-East UK. > > > phone UK 07960 011275 > > > > > > __________________________________________________ > > > Do You Yahoo!? > > > Yahoo! Sports - Coverage of the 2002 Olympic Games > > > http://sports.yahoo.com > > > > > > -- > > > To unsubscribe, e-mail: > > > <mailto:[EMAIL PROTECTED]> > > > For additional commands, e-mail: > > > <mailto:[EMAIL PROTECTED]> > > > > > > -- > > > To unsubscribe, e-mail: > > > <mailto:[EMAIL PROTECTED]> > > > For additional commands, e-mail: > > > <mailto:[EMAIL PROTECTED]> > > > > -- > > To unsubscribe, e-mail: > > <mailto:[EMAIL PROTECTED]> > > For additional commands, e-mail: > > <mailto:[EMAIL PROTECTED]> > > -- > To unsubscribe, e-mail: > <mailto:[EMAIL PROTECTED]> > For additional commands, e-mail: > <mailto:[EMAIL PROTECTED]> > > -- > To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> > For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> > -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
