Real Dynamic Forms - Using DynaBeans & MapBackedForms

[Oliver Thiel <th...@gmx.de>]

Hi @all,
 
 
I am relative new to Strut, but I have to | want to do a struts project
for my studies at the university of applied science.  I try to build a
'real' dynamic registration form using DynaBeans and Maps (all HashMaps
will be filled by a database call later).
 
What I have so far is:
 
CreateFormAction.java:
 
DynaActionForm mappedForm2 = (DynaActionForm) form;
HashMap mappedForm = new HashMap();
 
mappedForm.put("username", "test");
mappedForm.put("email", "test@gmx.de");
mappedForm.put("password", "xyz");
mappedForm.put("conf_pwd", "xyz");
 
mappedForm2.set("mappedForm", mappedForm);
request.setAttribute("mappedForm2", mappedForm2);
 
 
 
struts-config.xml
 
<form-bean dynamic="true" name="mappedForm2"
type="org.apache.struts.action.DynaActionForm">
<form-property name="mappedForm" type="java.util.HashMap"/>
<form-property name="getEmail" size="20" type="java.lang.String"/>
</form-bean>
 
 
 
mappedForm.jsp
 
<!-- TYPE:INPUT -->
<bean:define id="values" name="mappedForm2" property="mappedForm"
type="java.util.HashMap"/>
<logic:iterate id="mappedForm" name="mappedForm2" property="mappedForm">
        <TR>
            <TD width="40%"><bean:write name="mappedForm"
property="key"/>:</TD>
        <TD><input type="text" name="<bean:write name="mappedForm"
property="key" />"          
             value="<bean:write name="mappedForm" property="value" />"
class="Feld"></TD>    
        </TR>
  </logic:iterate>
  <!-- TYPE:CHECKBOX --> 
        <TR> 
            <TD><html:checkbox styleClass="Check" property="getEmail"
/></TD>
            <TD><bean:message key="form.getMail"/></TD>
        </TR>
 
 
mappedForm.java (extends DynaActionForm)
 
String getEmail        = (String)this.get("getEmail");
In the mappedForm.java I can only access the getMail value! 
 
Questions:
1.	How can I access the values from the map in my mappedForm
validate() method? To validate them I want to use another Map, filed
with Regular Expressions?
2.	Can I use more than one Map? Cause I also want the (input
type="text") to be dynamic too, so that I can switch between text and
password for example.
3.	How can I out print a 'dynamic' bean massage?
Something like that: <bean:message key="<bean:write name="mappedForm"
property="value"/>" /> But this does not work!
4.	Is their a better way in Struts to do this?
5.	Has any one done something like that before and can provide my
some examples or code snippets?
 
 
Thanks in advanced 
Oliver
 
 

Re: Real Dynamic Forms - Using DynaBeans & MapBackedForms

[hhlow <hh...@yahoo.com.au>]

Hi Oliver,

i am doing a simple login form.
well i am using Struts bean.
anyway i print the bean out by using

<bean:write name="user" property="username"/>

but recently i have this no getter method for the bean i dun understand why.
coz i have initialised the bean.

check out the tut here..it demostrates some simple features
www.reumann.net/do/struts/lesson1
www.reumann.net/do/struts/lesson2
www.reumann.net/do/struts/lesson3

Clement

----- Original Message ----- 
From: "Oliver Thiel" <th...@gmx.de>
To: <st...@jakarta.apache.org>
Sent: Monday, January 12, 2004 3:31 PM
Subject: Real Dynamic Forms - Using DynaBeans & MapBackedForms


> Hi @all,
>
>
> I am relative new to Strut, but I have to | want to do a struts project
> for my studies at the university of applied science.  I try to build a
> 'real' dynamic registration form using DynaBeans and Maps (all HashMaps
> will be filled by a database call later).
>
> What I have so far is:
>
> CreateFormAction.java:
>
> DynaActionForm mappedForm2 = (DynaActionForm) form;
> HashMap mappedForm = new HashMap();
>
> mappedForm.put("username", "test");
> mappedForm.put("email", "test@gmx.de");
> mappedForm.put("password", "xyz");
> mappedForm.put("conf_pwd", "xyz");
>
> mappedForm2.set("mappedForm", mappedForm);
> request.setAttribute("mappedForm2", mappedForm2);
>
>
>
> struts-config.xml
>
> <form-bean dynamic="true" name="mappedForm2"
> type="org.apache.struts.action.DynaActionForm">
> <form-property name="mappedForm" type="java.util.HashMap"/>
> <form-property name="getEmail" size="20" type="java.lang.String"/>
> </form-bean>
>
>
>
> mappedForm.jsp
>
> <!-- TYPE:INPUT -->
> <bean:define id="values" name="mappedForm2" property="mappedForm"
> type="java.util.HashMap"/>
> <logic:iterate id="mappedForm" name="mappedForm2" property="mappedForm">
>         <TR>
>             <TD width="40%"><bean:write name="mappedForm"
> property="key"/>:</TD>
>         <TD><input type="text" name="<bean:write name="mappedForm"
> property="key" />"
>              value="<bean:write name="mappedForm" property="value" />"
> class="Feld"></TD>
>         </TR>
>   </logic:iterate>
>   <!-- TYPE:CHECKBOX -->
>         <TR>
>             <TD><html:checkbox styleClass="Check" property="getEmail"
> /></TD>
>             <TD><bean:message key="form.getMail"/></TD>
>         </TR>
>
>
> mappedForm.java (extends DynaActionForm)
>
> String getEmail        = (String)this.get("getEmail");
> In the mappedForm.java I can only access the getMail value!
>
> Questions:
> 1. How can I access the values from the map in my mappedForm
> validate() method? To validate them I want to use another Map, filed
> with Regular Expressions?
> 2. Can I use more than one Map? Cause I also want the (input
> type="text") to be dynamic too, so that I can switch between text and
> password for example.
> 3. How can I out print a 'dynamic' bean massage?
> Something like that: <bean:message key="<bean:write name="mappedForm"
> property="value"/>" /> But this does not work!
> 4. Is their a better way in Struts to do this?
> 5. Has any one done something like that before and can provide my
> some examples or code snippets?
>
>
> Thanks in advanced
> Oliver
>
>
>


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