Update deprecated syntax of pymongo

examples/pymongo/app.py

@@ -2,7 +2,7 @@
 from bson.objectid import ObjectId
 
 from flask import Flask
-import flask_admin as admin
+from flask_admin import Admin
 
 from wtforms import form, fields
 
@@ -16,11 +16,10 @@
 # Create dummy secrey key so we can use sessions
 app.config['SECRET_KEY'] = '123456790'
 
-# Create models
-conn = pymongo.Connection()
+# Connection to mongodb 
+uri = "Paste connection string"
 db = conn.test
 
-
 # User admin
 class InnerForm(form.Form):
     name = fields.StringField('Name')
@@ -74,7 +73,7 @@ def get_list(self, *args, **kwargs):
 
         # Grab user names
         query = {'_id': {'$in': [x['user_id'] for x in data]}}
-        users = db.user.find(query, fields=('name',))
+        users = db.user.find(query, {'name': 1})
 
         # Contribute user names to the models
         users_map = dict((x['_id'], x['name']) for x in users)
@@ -86,7 +85,7 @@ def get_list(self, *args, **kwargs):
 
     # Contribute list of user choices to the forms
     def _feed_user_choices(self, form):
-        users = db.user.find(fields=('name',))
+        users = db.user.find({}, {'name': 1})
         form.user_id.choices = [(str(x['_id']), x['name']) for x in users]
         return form
 
@@ -99,7 +98,7 @@ def edit_form(self, obj):
         return self._feed_user_choices(form)
 
     # Correct user_id reference before saving
-    def on_model_change(self, form, model):
+    def on_model_change(self, form, model, is_created):
         user_id = model.get('user_id')
         model['user_id'] = ObjectId(user_id)
 
@@ -114,7 +113,7 @@ def index():
 
 if __name__ == '__main__':
     # Create admin
-    admin = admin.Admin(app, name='Example: PyMongo')
+    admin = Admin(app, name='Example: PyMongo')
 
     # Add views
     admin.add_view(UserView(db.user, 'User'))