half working authorS field

themisfields/__init__.py

@@ -1,5 +1,5 @@
 from zope.interface import implements
-from zope.schema import Choice, Field
+from zope.schema import Choice, Field, List
 
 from zope.schema.interfaces import IFromUnicode
 from zope.schema.interfaces import WrongType
@@ -10,6 +10,8 @@ from themisfields.vocabs import CommissionsSource
 from themisfields.interfaces import IAuthor
 from themisfields.vocabs import AuthorsSource
 
+from themisfields.interfaces import IAuthors
+
 
 class Commission(Field):
     implements(ICommission, IFromUnicode)
@@ -61,3 +63,11 @@ class Author(Field):
         self.validate(str)
         return str
 
+class Authors(List):
+    implements(IAuthors)
+
+    def __init__(self, **kw):
+        kw['value_type'] = Author(title=u'Author')
+        kw['unique'] = False
+        super(Authors, self).__init__(**kw)
+

themisfields/editors.py

@@ -3,6 +3,7 @@ from zope.schema import interfaces as schema_ifaces
 from themisfields import interfaces
 from themisfields import Commission
 from themisfields import Author
+from themisfields import Authors
 from plone.schemaeditor.fields import FieldFactory
 
 class ICommission(interfaces.ICommission, schema_ifaces.IFromUnicode):
@@ -15,3 +16,9 @@ class IAuthor(interfaces.IAuthor, schema_ifaces.IFromUnicode):
     pass
 
 AuthorFactory = FieldFactory(Author, u'Author')
+
+
+class IAuthors(interfaces.IAuthors, schema_ifaces.IList):
+    pass
+
+AuthorsFactory = FieldFactory(Authors, u'Author(s)')

themisfields/editors.zcml

@@ -12,4 +12,9 @@
         component=".editors.AuthorFactory"
         />
 
+    <utility
+        name="themisfields.Authors"
+        component=".editors.AuthorsFactory"
+        />
+
 </configure>

themisfields/handlers.py

@@ -1,5 +1,6 @@
 try:
     from plone.supermodel.exportimport import BaseHandler, ChoiceHandler
+    from plone.supermodel.fields import ListHandler
     HAVE_SUPERMODEL = True
 except ImportError:
     HAVE_SUPERMODEL = False
@@ -16,6 +17,9 @@ if HAVE_SUPERMODEL:
     from themisfields import Author
     from themisfields.interfaces import IAuthor
 
+    from themisfields import Authors
+    from themisfields.interfaces import IAuthors
+
     class CommissionHandler_(BaseHandler):
         pass
 
@@ -25,3 +29,8 @@ if HAVE_SUPERMODEL:
         pass
 
     AuthorHandler = AuthorHandler_(Author)
+
+    class AuthorsHandler_(BaseHandler):
+        pass
+
+    AuthorsHandler = AuthorsHandler_(Authors)

themisfields/handlers.zcml

@@ -14,4 +14,9 @@
         name="themisfields.Author"
         />
 
+    <utility
+        component=".handlers.AuthorsHandler"
+        name="themisfields.Authors"
+        />
+
 </configure>

themisfields/interfaces.py

@@ -1,6 +1,6 @@
 from zope.interface import Interface
 
-from zope.schema.interfaces import IChoice, IField
+from zope.schema.interfaces import IChoice, IField, IList
 from zope import schema
 
 class ICommission(IField):
@@ -9,3 +9,5 @@ class ICommission(IField):
 class IAuthor(IField):
     '''Field containing a unicode string without newlines that is an author.'''
 
+class IAuthors(IList):
+    '''Field containing a list of authors'''