Added first files for admin and login/signup in admin

paramecio2/libraries/db/extrafields/parentfield.py

@@ -0,0 +1,42 @@
+#!/usr/bin/env python3
+
+#from paramecio2.libraries.db.webmodel import PhangoField
+from paramecio2.libraries.db.corefields import IntegerField
+from paramecio2.libraries.db.coreforms import SelectModelForm
+from paramecio.citoplasma.httputils import GetPostFiles
+
+class ParentField(IntegerField):
+    
+    def __init__(self, name, size=11, required=False, field_name='name'):
+        
+        super().__init__(name, size, required)
+        
+        #self.foreignkey=True
+        self.indexed=True
+        self.field_name=field_name
+
+    def post_register(self):
+        
+        if self.model!=None:
+            self.change_form(SelectModelForm, [self.model, self.field_name, self.model.name_field_id, self.name])
+    
+    def check(self, value):
+        
+        value=super().check(value)
+        
+        if self.model!=None:
+            if self.model.updated==True:
+                if self.model.name_field_id in self.model.post:
+                    GetPostFiles.obtain_get()
+                    
+                    model_id=GetPostFiles.get.get(self.model.name_field_id, '0')
+                    
+                    if model_id==value:
+                        self.error=True
+                        self.txt_error='A field cannot be its own father'
+                        self.required=True
+                        value=0
+                        return value
+                        
+                
+        return value