Problem in saving the form

[Faraz Ali]

Hi All,

I am trying to create a form which will add the user record in the database. When i click the submit button, it looks like that form is not submitted. In the debug mode, its not going inside onSubmit. I am not seeing any exception.

On the form level, there is an input field "status", and on the bean side i have an enum Status. So how to map this? How to do mapping for this kind of thing. I suspect form save problem is because of this.

So i have two questions here:
1. how to map a form field to bean's enum.
2. any reason onSubmit is not called?

Can you guys give me an example how to write custom property editor for enum, how to register with binder and how to specify this form field value should map to bean's enum.


Thank you very much.

[Faraz Ali]

Hi All,

I am now able to save the form with string, date and enum values. There is one problem while saving enums, instead of the actual enum value, its saving the index value of enums. I also tried creating a custom property editor for enum, but its storing 0, 1, 2 etc, not storing the real string values which i want to save.

See my code below:

//the command bean
public class TempTable implements Serializable {
        private int column1;
	private String column2, column3, column4;
	private Date column5;
	private Title column6 = Title.Mr; 
        public TempTable(){}
	public String getColumn2() {
		return column2;
	}
	public void setColumn2(String column2) {
		this.column2 = column2;
	}
	public String getColumn3() {
		return column3;
	}
	public void setColumn3(String column3) {
		this.column3 = column3;
	}
	public String getColumn4() {
		return column4;
	}
	public void setColumn4(String column4) {
		this.column4 = column4;
	}
	public Date getColumn5() {
		return column5;
	}
	public void setColumn5(Date column5) {
		this.column5 = column5;
	}
	public int getColumn1() {
		return column1;
	}
	public Title getColumn6() {
		return column6;
	}
	public void setColumn6(Title column6) {
		this.column6 = column6;
	}
	public TempTable(String column2, String column3, String column4, Date column5, Title column6) {
		this.column2 = column2;
		this.column3 = column3;
		this.column4 = column4;
		this.column5 = column5;
		this.column6 = column6;
	}
}

    
<c:url value="/addTemp.htm" var="addTemp" />
<spring:nestedPath path="tempTable">
	<form action="${addTemp}" method="post">
		<table>
 			<tr>
 				<td><spring:bind path="column2"><input type="text" name="${status.expression}" value="${status.value}" /></spring:bind></td>
   			</tr>
   			<tr>	
   				<td><spring:bind path="column3"><input type="text" name="${status.expression}" value="${status.value}" /></spring:bind></td>
 			</tr>
 			<tr>	
   				<td><spring:bind path="column4"><input type="text" name="${status.expression}" value="${status.value}" /></spring:bind></td>
 			</tr>
 			<tr>	
   				<td><spring:bind path="column5"><input type="text" name="${status.expression}" value="${status.value}" /></spring:bind><span style="font-size:smaller">(yyyy-MM-dd)</span></td>
 			</tr>
 			<tr>	
   				<td><spring:bind path="column6"><input type="text" name="${status.expression}" value="${status.value}" /></spring:bind></td>
 			</tr>
 			<tr><td><input type="submit" value="Add" /></td></tr>
 		</table>
	</form>
</spring:nestedPath>

public class TempController extends SimpleFormController {
	private MyService myService;
	
	public TempController() {
		setCommandName("tempTable");
                setCommandClass(TempTable.class);
		setFormView("addTemp");
                setSuccessView("listTemps");
	}
	
	public void setMyService(MyService myService) {
		this.myService = myService;
	}
	
	protected void initBinder(HttpServletRequest request, ServletRequestDataBinder binder) throws Exception {
        binder.registerCustomEditor(Date.class, new CustomDateEditor(new SimpleDateFormat("yyyy-MM-dd"), true));
        binder.registerCustomEditor(Title.class, new EnumPropertyEditor(Title.class));
    }
	
	protected ModelAndView onSubmit(Object command) throws Exception {
		TempTable tempTable = (TempTable) command;
		myService.addTempTable(tempTable);
		
               ModelAndView mav = new ModelAndView(getSuccessView());
               Collection<TempTable> tempTables = myService.findAllTemps();
               mav.addObject("tempTables", tempTables);
               mav.addObject("tempTable", tempTable);
               return mav;
    }
}

    
public class EnumPropertyEditor extends PropertyEditorSupport {
    private Class enumType;

    public EnumPropertyEditor(Class enumType) {
        setEnumType(enumType);
    }

    public Class getEnumType() {
        return enumType;
    }

    public void setEnumType(Class enumType) {
        if(!enumType.isEnum()){
            throw new IllegalArgumentException("Class must be an enum");
        }
        this.enumType = enumType;
    }

    public void setAsText(String text) throws IllegalArgumentException {
        for(Object e : getEnumType().getEnumConstants()){
        	System.out.println(e.toString());
            if(e.toString().equals(text)){
            	System.out.println("true: "+e.toString());
                setValue(e);
                return;
            }
        }
        throw new IllegalArgumentException("Invalid text for enum of type '" + enumType.getName() + ": '" + text + "'.");
    }
    
    public String getAsText() {
    	return ((Enum) getValue()).name();
    }
}

So above is all the code i am having. No matter i use enum property editor or not, it always inserts index values instead of text.


Thanks,

[Sikandar Khan]

Looking at your code, it looks like that the Title is the enum. If yes, than use the @Enumerated annotation with the Title field as below:

@Enumerated(EnumType.STRING)

Hopes this will help.

Thanks,

[Faraz Ali]

Thanks,

yes its working properly now.