validators WIP

corepost/test/arguments.py

@@ -3,20 +3,29 @@ Argument extraction tests
 @author: jacekf
 '''
 
-from corepost.web import CorePost
+from corepost.web import CorePost, validate
 from corepost.enums import Http
 from formencode import Schema, validators
 
 app = CorePost()
 
+class TestSchema(Schema):
+    allow_extra_fields = True
+    childId = validators.Regex(regex="^jacekf|test$")
+
 @app.route("/int/<int:intarg>/float/<float:floatarg>/string/<stringarg>",Http.GET)
 def test(request,intarg,floatarg,stringarg,**kwargs):
     args = (intarg,floatarg,stringarg)
     return "%s" % map(lambda x: (type(x),x),args)
 
-@app.route("/validate/<int:rootId>/children",Http.POST)
-@app.validate(childid=validators.String(not_empty=True))
-def post(request,rootId,childId,**kwargs):
+@app.route("/validate/<int:rootId>/schema",Http.POST)
+@validate(schema=TestSchema)
+def postValidateSchema(request,rootId,childId,**kwargs):
+    return "%s - %s - %s" % (rootId,childId,kwargs)
+
+@app.route("/validate/<int:rootId>/custom",Http.POST)
+@validate(childId=validators.Regex(regex="^jacekf|test$"))
+def postValidateCustom(request,rootId,childId,**kwargs):
     return "%s - %s - %s" % (rootId,childId,kwargs)
 
 def run_app_arguments():

corepost/test/feature/validate.feature

@@ -5,14 +5,23 @@ Feature: Argument Validators
 	CorePost should be able to correctly validate path, query and form arguments
 	
 	@validate
-	Scenario Outline: Path argument extraction
+	Scenario Outline: Form argument validation
 		Given 'arguments' is running
-		When as user 'None:None' I POST 'http://127.0.0.1:8082/validate/23/children' with '<args>'
+		# childId accepts only jacekf or test, via Regex validator
+		When as user 'None:None' I POST 'http://127.0.0.1:8082/validate/23/<url>' with '<args>'
 		Then I expect HTTP code <code>
 		And I expect content contains '<content>'
 
 		Examples:
-			| args												| code	| content																|
-			| childId=jacekf									| 201	| 23 - jacekf - {}														|
-			| childId=jacekf&otherId=test						| 201	| 23 - jacekf - {'otherId': 'test'}										|
+			| url		| args												| code	| content																|
+			# validates using argument-specific validators
+			| custom	| childId=jacekf									| 201	| 23 - jacekf - {}														|
+			| custom	| childId=jacekf&otherId=test						| 201	| 23 - jacekf - {'otherId': 'test'}										|
+			| custom	| childId=test										| 201	| 23 - test - {}														|
+			| custom	| childId=wrong										| 400	| 'wrong' is not a valid value for 'childId': The input is not valid	|			
+			# validates using Schema
+			| schema	| childId=jacekf									| 201	| 23 - jacekf - {}														|
+			| schema	| childId=jacekf&otherId=test						| 201	| 23 - jacekf - {'otherId': 'test'}										|
+			| schema	| childId=test										| 201	| 23 - test - {}														|
+			| schema	| childId=wrong										| 400	| 'wrong' is not a valid value for 'childId': The input is not valid	|			
 		
\ No newline at end of file

corepost/web.py

@@ -12,7 +12,7 @@ from collections import defaultdict
 from enums import MediaType
 from corepost.enums import Http
 from corepost.utils import getMandatoryArgumentNames
-from formencode import validators, Schema, Validator
+from formencode import FancyValidator, Invalid
     
 class RequestRouter:
     ''' Common class for containing info related to routing a request to a function '''
@@ -148,15 +148,6 @@ class CorePost(Resource):
             return f
         return wrap
 
-    def validate(self,schema=None,**kwargs):
-        '''
-        Main decorator for registering additional validators for incoming URL arguments
-        '''
-        def wrap(f,**kwargs):
-            print kwargs
-            return f
-        return wrap    
-
     def render_GET(self,request):
         """ Handles all GET requests """
         return self.__renderUrl(request)
@@ -247,4 +238,40 @@ class CorePost(Resource):
         reactor.run()                       #@UndefinedVariable
         
 
+##################################################################################################
+#
+# DECORATORS
+#
+##################################################################################################    
     
+def validate(schema=None,**vKwargs):
+    '''
+    Main decorator for registering additional validators for incoming URL arguments
+    '''
+    def fn(realfn):  
+        def wrap(*args,**kwargs):
+            # first run schema validation, then the custom validators
+            errors = ()
+            if schema != None:
+                try:
+                    schema.to_python(kwargs)
+                except Invalid as ex:
+                    errors = ()
+                    for error in ex.error_dict.keys():
+                        errors.append()
+                    raise TypeError("%s" % ex)
+                
+            for arg in vKwargs.keys():
+                validator = vKwargs[arg]
+                if arg in kwargs:
+                    val = kwargs[arg]
+                    try:
+                        validator.to_python(val)
+                    except Invalid as ex:
+                        raise TypeError("'%s' is not a valid value for '%s': %s" % (val,arg,ex))
+                else:
+                    if isinstance(validator,FancyValidator) and validator.not_empty:
+                        raise TypeError("Missing mandatory argument '%s'" % arg)
+            return realfn(*args,**kwargs)
+        return wrap
+    return fn    

setup.py

@@ -49,7 +49,7 @@ def read(fname):
 
 setup(
     name="CorePost",
-    version="0.0.4",
+    version="0.0.5",
     author="Jacek Furmankiewicz",
     author_email="jacek99@gmail.com",
     description=("A Twisted Web REST micro-framework"),