--- a/src/pyams_content/component/theme/__init__.py	Tue Jul 10 16:59:55 2018 +0200
+++ b/src/pyams_content/component/theme/__init__.py	Wed Jul 11 10:18:10 2018 +0200
@@ -18,7 +18,8 @@
 # import interfaces
 from pyams_content.component.theme.interfaces import IThemesManagerTarget, IThemesManager, THEMES_MANAGER_KEY, \
     IThemesTarget, IThemesInfo, THEMES_INFO_KEY, ITagsManager, ITagsManagerTarget, TAGS_MANAGER_KEY, ITagsInfo, \
-    ITagsTarget, TAGS_INFO_KEY
+    ITagsTarget, TAGS_INFO_KEY, ICollectionsManager, ICollectionsManagerTarget, COLLECTIONS_MANAGER_KEY, \
+    ICollectionsInfo, ICollectionsTarget, COLLECTIONS_INFO_KEY
 from pyams_content.features.checker.interfaces import IContentChecker, ERROR_VALUE
 
 # import packages
@@ -116,7 +117,7 @@
     """Themes info content checker"""
 
     label = _("Themes")
-    weight = 200
+    weight = 210
 
     def inner_check(self, request):
         output = []
@@ -126,3 +127,51 @@
             output.append(translate(ERROR_VALUE).format(field=translate(IThemesInfo['themes'].title),
                                                         message=translate(_("no defined theme"))))
         return output
+
+
+#
+# Collections management
+#
+
+@implementer(ICollectionsManager)
+class CollectionsManager(Persistent, Contained):
+    """Collections manager persistent class"""
+
+    thesaurus_name = FieldProperty(ICollectionsManager['thesaurus_name'])
+    extract_name = FieldProperty(ICollectionsManager['extract_name'])
+
+
+@adapter_config(context=ICollectionsManagerTarget, provides=ICollectionsManager)
+def collections_manager_factory(target):
+    """Collections manager factory"""
+    return get_annotation_adapter(target, COLLECTIONS_MANAGER_KEY, CollectionsManager, name='++collections-manager++')
+
+
+@implementer(ICollectionsInfo)
+class CollectionsInfo(Persistent, Contained):
+    """Collections info persistent class"""
+
+    collections = FieldProperty(ICollectionsInfo['collections'])
+
+
+@adapter_config(context=ICollectionsTarget, provides=ICollectionsInfo)
+def collections_info_factory(target):
+    """Collections info factory"""
+    return get_annotation_adapter(target, COLLECTIONS_INFO_KEY, CollectionsInfo, name='++collections++')
+
+
+@adapter_config(name='collections', context=ICollectionsTarget, provides=IContentChecker)
+class CollectionsContentChecker(BaseContentChecker):
+    """Collections info content checker"""
+
+    label = _("Collections")
+    weight = 215
+
+    def inner_check(self, request):
+        output = []
+        translate = request.localizer.translate
+        collections = ICollectionsInfo(self.context)
+        if not collections.collections:
+            output.append(translate(ERROR_VALUE).format(field=translate(ICollectionsInfo['collections'].title),
+                                                        message=translate(_("no defined collection"))))
+        return output