Dynamic default value

[mvanhouten]

Hi,

I am currently developing my first Grails project. It might be a stupid question but how do I set a default value for a column within the create view or domain or controller? I know I can set a static value within the domain like this

String foo = "Foo"

in this case however I want to retrieve a value from a different domain. To make it more precise - I am using the nimble plugin and would like to set the default value of a user column to the current user....

Can anybody give me some input on this issue?

Millhouse

[pledbrook]

I would normally do this in a service with a createNewBar() method. However, you might want to try lazy initialisation:

@Lazy String foo = { return User.get(SecurityUtils.subject.principal) }

or something like that. A word of warning: I haven't ever tried the @Lazy annotation with domain class properties, so I don't know whether it works or not.

Depending on the exact behaviour you want, you could also implement a GORM event handler such as beforeInsert() to initialise the property before it is persisted to the database.

[mvanhouten]

Thanks for your help!

I will try what you've recommended.

For now I implemented it within the view like this...

<%@ page import="org.apache.shiro.SecurityUtils" %>
.
.
.
.
                    <table>
                        <tbody>
			. 
			. 
			. 
			.
                            <tr class="prop">
                                <td valign="top" class="name">
                                    <label for="user"><g:message code="timeperiod.user.label" default="User" /></label>
                                </td>
                                <td valign="top" class="value ${hasErrors(bean: timeperiodInstance, field: 'user', 'errors')}">
                                    <g:select name="user.id" from="${User.list()}" optionKey="id" value="${SecurityUtils.subject?.principal}"  />
                                </td>
                            </tr>
                        </tbody>
                    </table>

It does pretty much what I wanted...