[FEAT] Advanced chart: can filter with not in abstract.

gargantext_web/api.py

@@ -3,7 +3,7 @@ from django.core.exceptions import PermissionDenied, SuspiciousOperation
 from django.core.exceptions import ValidationError
 from django.core.urlresolvers import reverse
 
-from sqlalchemy import text, distinct, or_
+from sqlalchemy import text, distinct, or_,not_
 from sqlalchemy.sql import func
 from sqlalchemy.orm import aliased
 
@@ -75,6 +75,7 @@ _operators_dict = {
     ">=":               lambda field, value: (field >= value),
     "in":               lambda field, value: (or_(*tuple(field == x for x in value))),
     "contains":         lambda field, value: (field.contains(value)),
+    "doesnotcontain":  lambda field, value: (not_(field.contains(value))),
     "startswith":       lambda field, value: (field.startswith(value)),
 }
 _hyperdata_list = [
@@ -117,6 +118,8 @@ class NodesChildrenNgrams(APIView):
             ngrams_query = ngrams_query.filter(Ngram.terms.startswith(request.GET['startwith']))
         if 'contain' in request.GET:
             ngrams_query = ngrams_query.filter(Ngram.terms.contains(request.GET['contain']))
+        #if 'doesnotcontain' in request.GET:
+        #    ngrams_query = ngrams_query.filter(not_(Ngram.terms.contains(request.GET['doesnotcontain'])))
         # pagination
         offset = int(request.GET.get('offset', 0))
         limit = int(request.GET.get('limit', 20))

static/js/gargantext.angular.js

 // Pre-defined constants
 var operators = {
     'text': [
-        {'label': 'contains',       'key': 'contains'}
+        {'label': 'contains',       'key': 'contains'},
+        {'label': 'does not contain',   'key': 'doesnotcontain'},
     ],
     'string': [
         {'label': 'starts with',    'key': 'startswith'},
         {'label': 'contains',       'key': 'contains'},
+        {'label': 'does not contain',       'key': 'doesnotcontain'},
         {'label': 'ends with',      'key': 'endswith'},
         {'label': 'is',             'key': '='},
         {'label': 'is before',      'key': '<'},