added material reference in solr index

config/sync/search_api.index.database.yml

@@ -10,6 +10,7 @@ dependencies:
   config:
     - field.storage.node.body
     - field.storage.node.field_famille
+    - field.storage.node.field_reference
     - field.storage.node.field_tags
     - field.storage.taxonomy_term.field_synonyms
     - field.storage.node.field_thesaurus
@@ -52,6 +53,15 @@ field_settings:
     dependencies:
       config:
         - field.storage.node.field_famille
+  field_reference:
+    label: Reference
+    datasource_id: 'entity:node'
+    property_path: field_reference
+    type: 'solr_text_custom:ngramstring'
+    boost: !!float 21
+    dependencies:
+      config:
+        - field.storage.node.field_reference
   nid:
     label: ID
     datasource_id: 'entity:node'
@@ -221,6 +231,7 @@ processor_settings:
     all_fields: true
     fields:
       - field_famille
+      - field_reference
       - processed
       - tag_name
       - tag_synonyms