RE: Populating a Form from the Model before view
this example works by going through the action, so the
url you need to use must go through the action...
http://hostname/myAction.do
do not go through:
http://hostname/myPage.jsp # your Action will not execute
What also might catch you is that by going through the
action, it forces the the validate() method of the
Form bean to be called, so if your validate fails,
your action will never get a chance to run, which in this
case is bad because you haven't populated your view yet!
I've got some smarts in my Form by using a hidden field
so that the validate method knows what the user is doing
so as not to fail if the model data has not been populated yet.
So I might edit data with http://hostname/editUser.do?action='load'id='jsmith'
and when clicking the save button on my page after editing, i
change the hidden text field named 'action' to be 'save'
In this way validate() knows to do something different in the
action='load' case as opposed to an action='save' case.
In the 'load' case, my required field may be only 'id' but in
the 'edit' case, i may have lots of required fields, 'firstName', 'ssn', etc...
-don
-Original Message-
From: Marcus Biel [mailto:Marcus.Biel;bmw.de]
Sent: Thursday, November 07, 2002 6:18 AM
To: [EMAIL PROTECTED]
Subject: Re: Populating a Form from the Model before view
Your Action ... (){
perform(...ActionForm form..) {
...
..
.
YourActionForm yourActionForm = (YourActionForm)form;
...
..
.
yourActionForm.setYourProperty(yourPropertyValue);
}
}
[EMAIL PROTECTED] schrieb:
Hello,
Could someone point out the process in Struts in which a Form is poulated form the
model before being viewed.
Most of the examples for Struts assume the Form is origianlly populated from the
view. I looking for the **reverse solution**. The sort of workflow for editing data ?
Best Regards
Mark
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Populating a Form from the Model before view
Hello, Could someone point out the process in Struts in which a Form is poulated form the model before being viewed. Most of the examples for Struts assume the Form is origianlly populated from the view. I looking for the **reverse solution**. The sort of workflow for editing data ? Best Regards Mark
RE: Populating a Form from the Model before view
If I understood your question properly, you might want to look at my post from several months ago. http://www.mail-archive.com/struts-user;jakarta.apache.org/msg43480.html -Original Message- From: Mark Ayad [mailto:mark;javamark.com] Sent: Monday, November 04, 2002 3:04 AM To: [EMAIL PROTECTED] Subject: Populating a Form from the Model before view Hello, Could someone point out the process in Struts in which a Form is poulated form the model before being viewed. Most of the examples for Struts assume the Form is origianlly populated from the view. I looking for the **reverse solution**. The sort of workflow for editing data ? Best Regards Mark -- To unsubscribe, e-mail: mailto:struts-user-unsubscribe;jakarta.apache.org For additional commands, e-mail: mailto:struts-user-help;jakarta.apache.org
Re: Populating a Form from the Model before view
John, I have solved this using an EditForm Action with it execute method as follows: EditForm editForm = (EditForm)form; editForm.setTitle(title value); editForm.setDetails(detail value); return mapping.findForward(success); Thus essentially building the formBean before the form is created (IS This OK ?) On Submit the form invokes the SaveAction which has the validation rules here for the moment. It works fine but now I've got 2 Actions for one Form. My next question is how can the same be achived using dynamicForms ? I would like to see some examples where data has to be edited using forms, since most examples I've seen so far start with a blank form first. - Original Message - From: Hohlen, John [EMAIL PROTECTED] To: 'Struts Users Mailing List' [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Monday, November 04, 2002 5:17 PM Subject: RE: Populating a Form from the Model before view If I understood your question properly, you might want to look at my post from several months ago. http://www.mail-archive.com/struts-user;jakarta.apache.org/msg43480.html -Original Message- From: Mark Ayad [mailto:mark;javamark.com] Sent: Monday, November 04, 2002 3:04 AM To: [EMAIL PROTECTED] Subject: Populating a Form from the Model before view Hello, Could someone point out the process in Struts in which a Form is poulated form the model before being viewed. Most of the examples for Struts assume the Form is origianlly populated from the view. I looking for the **reverse solution**. The sort of workflow for editing data ? Best Regards Mark -- To unsubscribe, e-mail: mailto:struts-user-unsubscribe;jakarta.apache.org For additional commands, e-mail: mailto:struts-user-help;jakarta.apache.org -- To unsubscribe, e-mail: mailto:struts-user-unsubscribe;jakarta.apache.org For additional commands, e-mail: mailto:struts-user-help;jakarta.apache.org
RE: Populating a Form from the Model before view
Actually, by the time your action runs, the form bean is already created by Struts. It will be stored in request or session scope depending on what you've specified in your Struts config file. In this example, you're pre-populating the form with data. In a true application, your action would most likely retrieve this data from the database -- not directly, but via your business tier. It's okay to have two actions and only one form. The form is being re-used. One action, such as save, may require performing validation on the form data (i.e. configuring Struts to call the form's validate method), whereas another action may not (e.g. a pre-populate action). In this situation, you could have two separate action classes, or just one action which uses an action mapping parameter specified in the Struts configuration file to determine which action is being executed. -Original Message- From: Mark Ayad [mailto:mark;javamark.com] Sent: Monday, November 04, 2002 10:38 AM To: Struts Users Mailing List Subject: Re: Populating a Form from the Model before view John, I have solved this using an EditForm Action with it execute method as follows: EditForm editForm = (EditForm)form; editForm.setTitle(title value); editForm.setDetails(detail value); return mapping.findForward(success); Thus essentially building the formBean before the form is created (IS This OK ?) On Submit the form invokes the SaveAction which has the validation rules here for the moment. It works fine but now I've got 2 Actions for one Form. My next question is how can the same be achived using dynamicForms ? I would like to see some examples where data has to be edited using forms, since most examples I've seen so far start with a blank form first. - Original Message - From: Hohlen, John [EMAIL PROTECTED] To: 'Struts Users Mailing List' [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Monday, November 04, 2002 5:17 PM Subject: RE: Populating a Form from the Model before view If I understood your question properly, you might want to look at my post from several months ago. http://www.mail-archive.com/struts-user;jakarta.apache.org/msg43480.html -Original Message- From: Mark Ayad [mailto:mark;javamark.com] Sent: Monday, November 04, 2002 3:04 AM To: [EMAIL PROTECTED] Subject: Populating a Form from the Model before view Hello, Could someone point out the process in Struts in which a Form is poulated form the model before being viewed. Most of the examples for Struts assume the Form is origianlly populated from the view. I looking for the **reverse solution**. The sort of workflow for editing data ? Best Regards Mark -- To unsubscribe, e-mail: mailto:struts-user-unsubscribe;jakarta.apache.org For additional commands, e-mail: mailto:struts-user-help;jakarta.apache.org -- To unsubscribe, e-mail: mailto:struts-user-unsubscribe;jakarta.apache.org For additional commands, e-mail: mailto:struts-user-help;jakarta.apache.org -- To unsubscribe, e-mail: mailto:struts-user-unsubscribe;jakarta.apache.org For additional commands, e-mail: mailto:struts-user-help;jakarta.apache.org
Re: Populating a Form from the Model before view
... and for dynamic forms, what then ? Mark - Original Message - From: Hohlen, John [EMAIL PROTECTED] To: 'Struts Users Mailing List' [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Monday, November 04, 2002 5:59 PM Subject: RE: Populating a Form from the Model before view Actually, by the time your action runs, the form bean is already created by Struts. It will be stored in request or session scope depending on what you've specified in your Struts config file. In this example, you're pre-populating the form with data. In a true application, your action would most likely retrieve this data from the database -- not directly, but via your business tier. It's okay to have two actions and only one form. The form is being re-used. One action, such as save, may require performing validation on the form data (i.e. configuring Struts to call the form's validate method), whereas another action may not (e.g. a pre-populate action). In this situation, you could have two separate action classes, or just one action which uses an action mapping parameter specified in the Struts configuration file to determine which action is being executed. -Original Message- From: Mark Ayad [mailto:mark;javamark.com] Sent: Monday, November 04, 2002 10:38 AM To: Struts Users Mailing List Subject: Re: Populating a Form from the Model before view John, I have solved this using an EditForm Action with it execute method as follows: EditForm editForm = (EditForm)form; editForm.setTitle(title value); editForm.setDetails(detail value); return mapping.findForward(success); Thus essentially building the formBean before the form is created (IS This OK ?) On Submit the form invokes the SaveAction which has the validation rules here for the moment. It works fine but now I've got 2 Actions for one Form. My next question is how can the same be achived using dynamicForms ? I would like to see some examples where data has to be edited using forms, since most examples I've seen so far start with a blank form first. - Original Message - From: Hohlen, John [EMAIL PROTECTED] To: 'Struts Users Mailing List' [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Monday, November 04, 2002 5:17 PM Subject: RE: Populating a Form from the Model before view If I understood your question properly, you might want to look at my post from several months ago. http://www.mail-archive.com/struts-user;jakarta.apache.org/msg43480.html -Original Message- From: Mark Ayad [mailto:mark;javamark.com] Sent: Monday, November 04, 2002 3:04 AM To: [EMAIL PROTECTED] Subject: Populating a Form from the Model before view Hello, Could someone point out the process in Struts in which a Form is poulated form the model before being viewed. Most of the examples for Struts assume the Form is origianlly populated from the view. I looking for the **reverse solution**. The sort of workflow for editing data ? Best Regards Mark -- To unsubscribe, e-mail: mailto:struts-user-unsubscribe;jakarta.apache.org For additional commands, e-mail: mailto:struts-user-help;jakarta.apache.org -- To unsubscribe, e-mail: mailto:struts-user-unsubscribe;jakarta.apache.org For additional commands, e-mail: mailto:struts-user-help;jakarta.apache.org -- To unsubscribe, e-mail: mailto:struts-user-unsubscribe;jakarta.apache.org For additional commands, e-mail: mailto:struts-user-help;jakarta.apache.org -- To unsubscribe, e-mail: mailto:struts-user-unsubscribe;jakarta.apache.org For additional commands, e-mail: mailto:struts-user-help;jakarta.apache.org
Re: Populating a Form from the Model before view
On Mon, 4 Nov 2002, Mark Ayad wrote: Date: Mon, 4 Nov 2002 10:03:48 +0100 From: Mark Ayad [EMAIL PROTECTED] Reply-To: Struts Users Mailing List [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Populating a Form from the Model before view Hello, Could someone point out the process in Struts in which a Form is poulated form the model before being viewed. Most of the examples for Struts assume the Form is origianlly populated from the view. I looking for the **reverse solution**. The sort of workflow for editing data ? The Struts example app includes a use case like this, because it lets you either create new database info or edit existing database info. In the latter case, the pre-population is done with a separate Action than the database update. Best Regards Mark Craig -- To unsubscribe, e-mail: mailto:struts-user-unsubscribe;jakarta.apache.org For additional commands, e-mail: mailto:struts-user-help;jakarta.apache.org
