register: use ModelForm, and print all errors

accounts/forms/change_password.py

@@ -1,7 +1,10 @@
 from django import forms
-from ..settings import *
+from django.contrib.auth.models import User
+from django.contrib.auth import authenticate
 
+from ..status_code import *
+    
 class ChangePasswordForm(forms.Form):
-    username = forms.CharField(label="username", max_length=USERNAME_MAX_SIZE, min_length=USERNAME_MIN_SIZE, required=True)
-    current_password = forms.CharField(label="current_password", max_length=PASSWORD_MAX_SIZE, min_length=PASSWORD_MIN_SIZE, required=True)
-    new_password = forms.CharField(label="new_password", max_length=PASSWORD_MAX_SIZE, min_length=PASSWORD_MIN_SIZE, required=True)
+    new_password = forms.CharField(required=True, error_messages = {
+            'required': PASSWORD_MISSING,
+    })

accounts/forms/delete.py

@@ -1,6 +0,0 @@
-from django import forms
-from ..settings import *
-
-class DeleteForm(forms.Form):
-    username = forms.CharField(label="username", max_length=USERNAME_MAX_SIZE, min_length=USERNAME_MIN_SIZE, required=True)
-    password = forms.CharField(label="password", max_length=PASSWORD_MAX_SIZE, min_length=PASSWORD_MIN_SIZE, required=True)

accounts/forms/login.py

@@ -1,6 +1,15 @@
 from django import forms
-from ..settings import *
+from django.contrib.auth.models import User
+from django.contrib.auth import authenticate
+from django.db.models.query import QuerySet
+from django.core.exceptions import ValidationError
 
+from ..status_code import *
+    
 class LoginForm(forms.Form):
-    username = forms.CharField(label="username", max_length=USERNAME_MAX_SIZE, min_length=USERNAME_MIN_SIZE, required=True)
-    password = forms.CharField(label="password", max_length=PASSWORD_MAX_SIZE, min_length=PASSWORD_MIN_SIZE, required=True)
+    username = forms.CharField(required=True, error_messages={
+        'required': USERNAME_MISSING,
+    })
+    password = forms.CharField(required=True,     error_messages = {
+            'required': PASSWORD_MISSING,
+    })

accounts/forms/register.py

@@ -1,6 +1,22 @@
-from django import forms
-from ..settings import *
+from django.forms import ModelForm
+from django.contrib.auth.models import User
+from ..status_code import *
 
-class RegisterForm(forms.Form):
-    username = forms.CharField(label="username", max_length=USERNAME_MAX_SIZE, min_length=USERNAME_MIN_SIZE, required=True)
-    password = forms.CharField(label="password", max_length=PASSWORD_MAX_SIZE, min_length=PASSWORD_MIN_SIZE, required=True)
+class RegisterForm(ModelForm):
+    class Meta:
+        model = User
+        fields = ['username', 'password']
+        
+        error_messages = {
+            'username': {
+                'max_length': USERNAME_TOO_LONG,
+                'min_length': USERNAME_TOO_SHORT,
+                'required': USERNAME_MISSING,
+                'unique': USERNAME_ALREADY_USED,
+            },
+            'password': {
+                'max_length': PASSWORD_TOO_LONG,
+                'min_length': PASSWORD_TOO_SHORT,
+                'required': PASSWORD_MISSING,
+            }
+        }