books/model/index.js

module.exports = {
	common_fields: [
        {
            fieldname: 'name', fieldtype: 'Data', reqd: 1
        }
	],
    parent_fields: [
        {
            fieldname: 'owner', fieldtype: 'Link', reqd: 1, options: 'User'
        },
        {
            fieldname: 'modified_by', fieldtype: 'Link', reqd: 1, options: 'User'
        },
        {
            fieldname: 'creation', fieldtype: 'Datetime', reqd: 1
        },
        {
            fieldname: 'modified', fieldtype: 'Datetime', reqd: 1
        },
        {
            fieldname: 'keywords', fieldtype: 'Text'
        },
        {
            fieldname: 'docstatus', fieldtype: 'Int', reqd: 1, default: 0
        }
    ],
    child_fields: [
        {
            fieldname: 'idx', fieldtype: 'Int', reqd: 1
        },
        {
            fieldname: 'parent', fieldtype: 'Data', reqd: 1
        },
        {
            fieldname: 'parenttype', fieldtype: 'Link', reqd: 1, options: 'DocType'
        },
        {
            fieldname: 'parentfield', fieldtype: 'Data', reqd: 1
        }
    ]
};