community[patch]: documented the feature to filter documents in MongoDBloader (#18842)

"community[docs]: documented the feature to filter documents in
MongoDBloader"
- Description: documented the feature to filter documents in
MongoDBloader
- Feature: the feature
https://github.com/langchain-ai/langchain/discussions/18251
- Dependencies: No
- Twitter handle: https://twitter.com/im_Kushagra

docs/docs/integrations/document_loaders/mongodb.ipynb

@@ -42,6 +42,7 @@
     "*   MongoDB database name\n",
     "*   MongoDB collection name\n",
     "*   (Optional) Content Filter dictionary\n",
+    "*   (Optional) List of field names to include in the output\n",
     "\n",
     "The output takes the following format:\n",
     "\n",
@@ -59,7 +60,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 24,
+   "execution_count": 2,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -71,7 +72,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 6,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -80,7 +81,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 25,
+   "execution_count": 11,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -89,21 +90,22 @@
     "    db_name=\"sample_restaurants\",\n",
     "    collection_name=\"restaurants\",\n",
     "    filter_criteria={\"borough\": \"Bronx\", \"cuisine\": \"Bakery\"},\n",
+    "    field_names=[\"name\", \"address\"],\n",
     ")"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 26,
+   "execution_count": 12,
    "metadata": {},
    "outputs": [
     {
      "data": {
       "text/plain": [
-       "25359"
+       "71"
       ]
      },
-     "execution_count": 26,
+     "execution_count": 12,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -116,16 +118,16 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 27,
+   "execution_count": 13,
    "metadata": {},
    "outputs": [
     {
      "data": {
       "text/plain": [
-       "Document(page_content=\"{'_id': ObjectId('5eb3d668b31de5d588f4292a'), 'address': {'building': '2780', 'coord': [-73.98241999999999, 40.579505], 'street': 'Stillwell Avenue', 'zipcode': '11224'}, 'borough': 'Brooklyn', 'cuisine': 'American', 'grades': [{'date': datetime.datetime(2014, 6, 10, 0, 0), 'grade': 'A', 'score': 5}, {'date': datetime.datetime(2013, 6, 5, 0, 0), 'grade': 'A', 'score': 7}, {'date': datetime.datetime(2012, 4, 13, 0, 0), 'grade': 'A', 'score': 12}, {'date': datetime.datetime(2011, 10, 12, 0, 0), 'grade': 'A', 'score': 12}], 'name': 'Riviera Caterer', 'restaurant_id': '40356018'}\", metadata={'database': 'sample_restaurants', 'collection': 'restaurants'})"
+       "Document(page_content=\"Morris Park Bake Shop {'building': '1007', 'coord': [-73.856077, 40.848447], 'street': 'Morris Park Ave', 'zipcode': '10462'}\", metadata={'database': 'sample_restaurants', 'collection': 'restaurants'})"
       ]
      },
-     "execution_count": 27,
+     "execution_count": 13,
      "metadata": {},
      "output_type": "execute_result"
     }