Removed NetJSON type from schema

This has a few advantages:

* simplifies code a bit
* simplifies automatically generated UI

The type attribute is still added when using the json method.

docs/source/general/basics.rst

@@ -53,8 +53,7 @@ The previous example describes a device named ``RouterA`` which has a single
 network interface named ``eth0`` with a statically assigned ip address ``192.168.1.1/24``
 (CIDR notation).
 
-Because netjsonconfig deals only with ``DeviceConfiguration`` objects, the ``type``
-attribute can be omitted, the library will add the correct type automatically.
+Because netjsonconfig deals only with ``DeviceConfiguration`` objects, the ``type`` attribute can be omitted.
 
 The previous configuration object therefore can be shortened to:
 
@@ -81,7 +80,7 @@ The previous configuration object therefore can be shortened to:
     }
 
 From now on we will use the term *configuration dictionary* to refer to
-NetJSON DeviceConfiguration objects.
+*NetJSON DeviceConfiguration* objects.
 
 Backends
 --------

netjsonconfig/backends/openwrt/openwrt.py

@@ -39,9 +39,6 @@ def __init__(self, config, templates=[], context={}):
         """
         # perform deepcopy to avoid modifying the original config argument
         config = deepcopy(self._load(config))
-        # allow omitting NetJSON type
-        if 'type' not in config:
-            config.update({'type': 'DeviceConfiguration'})
         self.config = self._merge_config(config, templates)
         self.config = self._evaluate_vars(self.config, context)
         self.env = Environment(loader=PackageLoader('netjsonconfig.backends.openwrt',
@@ -139,7 +136,7 @@ def validate(self):
 
     def json(self, validate=True, *args, **kwargs):
         """
-        returns a string formatted in **NetJSON**;
+        returns a string formatted as **NetJSON DeviceConfiguration**;
         performs validation before returning output;
 
         ``*args`` and ``*kwargs`` will be passed to ``json.dumps``;
@@ -148,7 +145,10 @@ def json(self, validate=True, *args, **kwargs):
         """
         if validate:
             self.validate()
-        return json.dumps(self.config, *args, **kwargs)
+        # automatically adds NetJSON type
+        config = deepcopy(self.config)
+        config.update({'type': 'DeviceConfiguration'})
+        return json.dumps(config, *args, **kwargs)
 
     @classmethod
     def get_packages(cls):

netjsonconfig/schema.py

@@ -1,8 +1,6 @@
 """
-NetJSON DeviceConfiguration JSON-Schema definition
-this should be up to date with the official spec:
-
-http://netjson.org/rfc.html#DeviceConfiguration-schema
+NetJSON DeviceConfiguration JSON-Schema implementation
+http://netjson.org/rfc.html
 """
 
 schema = {
@@ -269,15 +267,7 @@
             ]
         }
     },
-    "required": [
-        "type"
-    ],
     "properties": {
-        "type": {
-            "type": "string",
-            "enum": ["DeviceConfiguration"],
-            "propertyOrder": 0,
-        },
         "general": {
             "type": "object",
             "title": "General",

tests/openwrt/test_backend.py

@@ -45,14 +45,14 @@ def test_string_argument(self):
         OpenWrt('{}')
 
     def test_validate(self):
-        o = OpenWrt({'type': 'WRONG'})
+        o = OpenWrt({'interfaces': 'WRONG'})
         with self.assertRaises(ValidationError):
             o.validate()
 
-        o = OpenWrt({'type': 'DeviceConfiguration'})
+        o = OpenWrt({'interfaces': []})
         o.validate()
-        o.config['type'] = 'CHANGED'
 
+        o.config['interfaces'] = 'CHANGED'
         try:
             o.validate()
         except ValidationError as e: