Question

I have legacy Database Schema (PostgreSQL) I cant change it. I’m having problems mapping my class with a database model, this is what I want and what I have:

-> Database Schema – DataTable Users – PostgreSQL

PK id STRING (email), password STRING

-> My model – Domain Users

PK email STRING, password STRING

I need be able to let to the users insert via the create.gsp view the id (email) of the user, i dont want to change manually the create.gsp or other .gsp I want Grails auto-generate the views for me.

So, How can i do to auto-generate the views showing the primary key like other field to let final user insert/see it?

In my Domain I have something like this:

class Usuario {
    String id
    String password

    static constraints = {
        id email: true
        password blank:false, nullable:false
    }

    static mapping = {
        table 'usuario'
        version false
        id column: 'id', generator: 'assigned'
    }

    String toString(){
        return id
    }
}

Thanks in advance, and sorry about my english!

UPDATE:

I just try to insert [the following piece of code] into my user controller and now i can see the id field, but only when I create a new user create.gsp, when I show list of users in the list.gsp I cant see the field id (email)

def scaffold = Usuario 

UPDATE II:

I have followed the comment from user1128791 and it worked for me, I install the templates system and then I worked over it, changing list.gsp form src/templates/scaffolding to show the id field, something like this:

excludedProps = Event.allEvents.toList() << 'version' << 'id'
allowedNames = domainClass.persistentProperties*.name << 'dateCreated' << 'lastUpdated'

for this

excludedProps = Event.allEvents.toList() << 'version'
allowedNames = domainClass.persistentProperties*.name << 'dateCreated' << 'lastUpdated' << 'id'

UPDATE III:

I’ve gone further and made ​​the following changes, to work only with my email field and password field.

class User {
    String email
    String password

    static transients = ['id']

    void setId(String email) {
       id = email
    }

    String getId() {
       return email
   }

   static constraints = {
       email email: true, blank:false, nullable:false
       password blank:false, nullable:false
   }
    static mapping = {
        table 'usuario'
        version false
        id generator: 'assigned', name: 'email'
        email column: 'id'
    }

    String toString(){
        return id
    }
}

To enable you to have the maximum amount of information about my problem and how i solved it, thats what i’m mapping:

CREATE TABLE usuario
(
   id text NOT NULL,
   "password" text,
    CONSTRAINT "PK usuario" PRIMARY KEY (id)
);

Answer 1

From http://www.grails.org/Artifact+and+Scaffolding+Templates:

To customize the templates for you project you need to the install the templates:

grails install-templates

This will create the src/templates folder in your project which will contain various artifact and scaffolding templates.

Than you will have to change each *.gsp template to render a textfield instead of hidden field for ID’s.

EDIT: Looking into the templates. Grails 2.0 should do this automaticaly for ‘assigned’ id’s.