Feature/exclude fields

django_elasticsearch/managers.py

@@ -245,7 +245,11 @@ def get_fields(self):
         model_fields = [f.name for f in self.model._meta.fields +
                         self.model._meta.many_to_many]
 
-        return self.model.Elasticsearch.fields or model_fields
+        ret = self.model.Elasticsearch.fields or model_fields
+        excludes = self.model.Elasticsearch.exclude_fields
+        if excludes:
+            ret = [i for i in ret if i not in excludes]
+        return ret
 
     def make_mapping(self):
         """

django_elasticsearch/models.py

@@ -31,6 +31,7 @@ class Elasticsearch:
         mapping = None
         serializer_class = EsJsonSerializer
         fields = None
+        exclude_fields = None
         facets_limit = 10
         facets_fields = None
         # http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-suggesters-term.html

readme.md

@@ -115,6 +115,24 @@ Each EsIndexable model receive an Elasticsearch class that contains its options
     Defaults to None  
     The fields to be indexed by elasticsearch, if left to None, all models fields will be indexed.
 
+* **exclude_fields**  
+    Defaults to None  
+    Exclude those fields to index, if left to None, exclude is disabled.
+    Example:  
+
+    ```python
+    MyModel(EsIndexable, models.Model):
+        useful_for_search = models.CharField(max_length=64)
+        no_use_for_search = models.CharField(max_length=64)
+
+        class Elasticsearch(EsIndexable.Elasticsearch):
+            fields = ['useful_for_search']
+            exclude_fields = {'no_use_for_search',} #allow set, list, tuple. set is the best.
+    ```
+
+
+
+
 * **mappings**  
     Defaults to None  
     You can override some or all of the fields mapping with this dictionary