api: set default number of publications shown from constants.py instead of hardcoded limit at 5

gargantext/constants.py

@@ -351,6 +351,11 @@ QUERY_SIZE_N_MAX     = 1000
 QUERY_SIZE_N_DEFAULT = 1000
 
 
+# ------------------------------------------------------------------------------
+# Graph <=> nodes API parameters
+# number of relevant publications shown
+DEFAULT_N_DOCS_HAVING_NGRAM = 5
+
 # ------------------------------------------------------------------------------
 # Graph constraints to compute the graph:
 # Modes: live graph generation, graph asynchronously computed or errors detected

gargantext/views/api/nodes.py

 
 from gargantext.models          import Node, Ngram, NodeNgram, NodeNodeNgram, NodeNode
-from gargantext.constants       import NODETYPES
+from gargantext.constants       import NODETYPES, DEFAULT_N_DOCS_HAVING_NGRAM
 from gargantext.util.db         import session, delete, func, bulk_insert
 from gargantext.util.db_cache   import cache, or_
 from gargantext.util.validation import validate
@@ -155,7 +155,7 @@ class NodeListHaving(APIView):
         except :
             raise ValidationException('"ngram_ids" needs integers separated by comma.')
 
-        limit=5
+        limit = DEFAULT_N_DOCS_HAVING_NGRAM
         nodes_list = []
 
         corpus = session.query(Node).filter(Node.id==corpus_id).first()