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="/loginAction.do" 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
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*Daniel Łaś <[EMAIL PROTECTED]>*
07/22/2005 09:03 AM
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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
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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
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