This is useful as you can use the error object to restore the value input by the user using the field Value tag: Another important thing to note about errors in Grails is that error messages are not hard coded anywhere.
The Field Error class in Spring resolves messages from message bundles using Grails' i18n support.
Let's go back to a scenario created in a previous article on how to create a cross-forest trust in Active Directory: Let's consider two forests, and
There is a child domain, net, in the forest, but is a single domain forest.
In that scenario, secondary zones or conditional forwarders that point to the other domain/forest should have been created.
For example, define a secondary zone for in the DNS servers and vise versa.
The second phase of validation happens when you call validate or save.
This is when Grails will validate the bound values against the constraints you defined.
This often means that your command objects and domain classes share properties and their constraints.The '*' constraint is a special case: it means that the associated constraints ('nullable' and 'size' in the above example) will be applied to all properties in all validateable classes.These defaults can be overridden by the constraints declared in a validateable class. Both of these accept a list of simple or regular expression strings that are matched against the property names in the source constraints.Our goal will be to create a two-way trust between the domain and the domain.Because it's a transitive trust, the NA domain will be able to use the trust as well.To test DNS, try the following: Next, verify the trust by going to the Domains and trusts snap-in.Right-click on the domain icon, and in the trusts tab, select the trust and click Properties. If the trust is created but can't be validated, delete both sides of the trust and recreate. If the trust is created and validated but you can't do trusted operations, such as logging in across the trust or finding users in the other forest, check the system time in both forests.He wrote Windows 2000: Active Directory Design and Deployment and co-authored Windows Server 2003 on HP Pro Liant Servers.Olsen is a Microsoft MVP for Windows Server-File Systems.Grails validation capability is built on Spring’s Validator API and data binding capabilities.However Grails takes this further and provides a unified way to define validation "constraints" with its constraints mechanism.