There are several possibilities to do what you are asking. You will still have to modify HTML code, it is just where. I would not typically create multiple jsp pages for Add, Update, Display. I would create a single page using a DynaValidatorForm. this way you can use the same form and based on the action you call, the appropriate validation will be performed. Additionally, I would look into the CRUD Action Examples to prevent me from developing multiple actions. Based on the funtion you are calling the appropriate Data Access function can be called. If this is set up properly you can get away with changing only two components for this to work the Business Object Bean and the HTML page.
Granted, if you have this information on multiple pages like a login page, then as a display in the corner of each page within the application, you would need to update that on each JSP page. But it is likely you would want to do that anyway to insure the look and feel of each page.
Daniel Łaś <[EMAIL PROTECTED]>
07/22/2005 10:07 AM
|
|
Well, I thing about something else.
If UserView bean can generate HTML form fields dependig on User
attributes, one for adding, another one for editing I could only change
my User bean (model) and my view layer will work without change. I think
that it is possible to write action that will work with this (controller
layer) without change too.
Lets say, I add new attribute to User, eg. lastName.
I have to:
1. modify User bean code (model)
2. then modify appropriate jsp pages, first with edit form, second with
add form
3. then modify struts-config.xml (form properties)
4. then modify appropriate form bean
5. then modify two actions (one for edit, one for add operation)
It would be nice, to change only my model and have view layer adapting
to model.
Mabe I'm re-inventing the wheel. If so, please tell me. I'm new to
struts and Java technologies, just trying to make right decisions before
my projects start.
Regards
[EMAIL PROTECTED] napisał(a):
> I think you are re-inventing something here.
>
> To do what you are wanting is already in struts to some degree.
>
> you have your User Bean, You define an formbean which either contains
> UserBean or contains fields that match UserBean
>
> on your jsp page you create something like
>
> <html:html local="true">
> <html:form action="" method="post">
> <bean:message key="resource.key"/><html:text propery="userId"/>
> </html:form>
> </html:html>
>
> This will print the UserID's label from the Resource file and give you
> internationalization.
>
> This might be easier than embedding HTML into a tag or bean.
>
> Inactive hide details for Daniel Łaś <[EMAIL PROTECTED]>Daniel Łaś
> <[EMAIL PROTECTED]>
>
>
> *Daniel Łaś <[EMAIL PROTECTED]>*
>
> 07/22/2005 09:03 AM
> Please respond to
> "Struts Users Mailing List" <user@struts.apache.org>
>
>
>
> To
>
> Struts Users Mailing List <user@struts.apache.org>
>
> cc
>
>
> Subject
>
> Design question
>
>
>
>
> Hi
>
> I'm interested in yours opinions about following design approach. I'd
> like to create some kind of "view" beans for viewable model beans. Those
> view beans can generate HTML for attached model bean. This generated
> HTML is based on resources, so I am able to generate different HTML code
> depending on session locale.
>
> Lets say I create one model bean User
> I created UserView with reference pointing to User.
> I attached reference to MessageResources in UserView bean during action
> execution with getResources(request)
> In my JSP I added: <bean:write name="UserView" property="content"
> filter="false"/> which calls getContent() method
> UserView method body is:
> public String getContent()
> {
> return messages.getMessage("user.login")+user.getLogin();
> }
> where:
> messages - private UserView member of class MessageResources
> user - private UserView member of class User
> user.login - resources key
>
> Everything worked well, but when I changed session locale my UserView
> bean generates output for previus locale. I think that I have to update
> messages member of UserView bean or use reference to other object, maybe
> servlet which will be constant during session.
>
> I'm new to struts, so I'd like to know if there are some other issues
> connected to mentioned design and struts?
>
> Regards
>
> --
> Daniel Łaś <[EMAIL PROTECTED]>
>
> e-direct Polska sp. z o.o.
> ul. 1-go Maja 9
> 45-068 Opole
> tel. +48 77 44 17 868
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
--
Daniel Łaś <[EMAIL PROTECTED]>
e-direct Polska sp. z o.o.
ul. 1-go Maja 9
45-068 Opole
tel. +48 77 44 17 868
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
