Set maximum number of stories in a flexible general container

common/app/layout/slices/ContainerDefinition.scala

@@ -21,7 +21,10 @@ object ContainerDefinition {
       customCssClasses = Set.empty,
     )
 
-  def fromContainer(container: Container, items: Seq[PressedContent]): Option[ContainerDefinition] =
+  def fromContainer(
+      container: Container,
+      items: Seq[PressedContent],
+  ): Option[ContainerDefinition] = {
     container match {
       case Dynamic(dynamicContainer) =>
         dynamicContainer.containerDefinitionFor(items.map(Story.fromFaciaContent))
@@ -32,6 +35,7 @@ object ContainerDefinition {
       case _ =>
         None
     }
+  }
 
   /** Fast container that looks good for the number of items provided */
   def fastForNumberOfItems(n: Int): ContainerDefinition =

common/app/layout/slices/FlexibleGeneral.scala

@@ -14,7 +14,10 @@ object FlexibleGeneral extends FlexibleContainer {
     }
   }
 
-  override protected def standardSlices(storiesIncludingBackfill: Seq[Story], firstSlice: Option[Slice]): Seq[Slice] = {
+  override protected def standardSlices(
+      storiesIncludingBackfill: Seq[Story],
+      firstSlice: Option[Slice],
+  ): Seq[Slice] = {
 
     storiesIncludingBackfill.length match {
       case 0 => Nil

common/app/layout/slices/FlexibleSpecial.scala

@@ -13,7 +13,10 @@ object FlexibleSpecial extends FlexibleContainer {
     }
   }
 
-  override protected def standardSlices(storiesIncludingBackfill: Seq[Story], firstSlice: Option[Slice]): Seq[Slice] = {
+  override protected def standardSlices(
+      storiesIncludingBackfill: Seq[Story],
+      firstSlice: Option[Slice],
+  ): Seq[Slice] = {
 
     storiesIncludingBackfill.length match {
       case 0 => Nil

facia-press/app/frontpress/FapiFrontPress.scala

@@ -332,6 +332,13 @@ trait FapiFrontPress extends EmailFrontPress with GuLogging {
         case "scrollable/highlights" => 6
         // scrollable small and medium containers are capped at 8 stories
         case "scrollable/small" | "scrollable/medium" => 8
+        // flexible general containers are capped at the maxItemsToDisplay value (set in the config tool)
+        // In the event the field isn't populated, the fallback cap is 9 stories
+        case "flexible/general" =>
+          collection.collectionConfig.displayHints match {
+            case Some(displayHints) => displayHints.maxItemsToDisplay.getOrElse(9)
+            case None               => 9
+          }
         // other container types should be capped at a maximum number of stories set in the app config
         case _ => Math.min(Configuration.facia.collectionCap, storyCountTotal)
       }