Validate programatically generated form fields on client side and server side

Asked Oct 04 '13 at 11:18

Active Oct 04 '13 at 11:18

Viewed 102 times

I have a struts2 form that is programatically generated upon request. The element names for all the fields are the same namely idA and paramValue because I am passing the form values as array and looping through it for database inserts. Inserts are now OK, but I am still finding out how to validate the form.

Here's the form:

<s:iterator value="sysParamList" var="sysParam">
    <tr>
        <td>
            <strong><s:property value="paramName" /></strong>
            <input type="hidden" name="idA" value="<s:property value="id" />" />
        </td>
        <td>
            <input type="text" name="paramValue" />
        </td>
    </tr>
</s:iterator>

The properties in my action are declared like

private String[] idA;
private String[] paramValue;

And I pass these in my DAO as-is. The DAO does the looping through the array for database insert.

I can validate forms using jquery.validate IF the form is hard coded in the JSP.

asked Oct 04 '13 at 11:18

makalshrek

1

I don't see how the form could be *hard coded*? – Roman C Oct 04 '13 at 11:26
2

What kind of validation do you need? – Aleksandr M Oct 04 '13 at 11:26
@RomanC I'm just saying that I won't be asking this question if the form fields are not generated inside a loop. – makalshrek Oct 04 '13 at 11:30
@AleksandrM I need first the server side validation. – makalshrek Oct 04 '13 at 11:32
Use `validate` method in your action class. – Aleksandr M Oct 04 '13 at 11:35
@SciasTwentyThree So what the loop stops you from running field validators or do you want to use non-field validator, or programmatic validation? – Roman C Oct 04 '13 at 11:37
@AleksandrM Yeah, I know that, however, I am validating form that is programatically generated. The number of input field will rely on the number of records in the database. – makalshrek Oct 04 '13 at 11:40
@RomanC I have no idea what kind of validation is appropriate for this. Maybe a `for` loop on the `validate` method but I don't know if that's the right way to go. – makalshrek Oct 04 '13 at 11:43
I have seen [this](http://stackoverflow.com/a/9970133/1540638) but is this the right way to do it? – makalshrek Oct 04 '13 at 11:44
Yeah, it's called a programmatic validation, it run along with other config-based validators. – Roman C Oct 04 '13 at 11:48
@RomanC How can I validate input formats in the `validate` method using this? I know input format checking can be done via validation xml in struts but only if the form elements are hard coded in the JSP. – makalshrek Oct 04 '13 at 11:51
Parse it with a pattern, you can use regex field validator. – Roman C Oct 04 '13 at 11:54
What conditions do you want to check? Not nulls, regex....? – Aleksandr M Oct 04 '13 at 11:56
@AleksandrM Right. Not nulls and regex. – makalshrek Oct 07 '13 at 00:57

Validate programatically generated form fields on client side and server side

0 Answers0