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Use of validate() method on serializer to implement write-once fields.

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Michael DeHaan
2013-04-07 22:17:33 -04:00
parent 9db8e27491
commit 26cff59ef0
3 changed files with 32 additions and 26 deletions
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26
lib/main/serializers.py
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@@ -49,14 +49,14 @@ class OrganizationSerializer(BaseSerializer):
users = reverse(lib.urls.views_OrganizationsUsersList, args=(obj.pk,)),
admins = reverse(lib.urls.views_OrganizationsAdminsList, args=(obj.pk,)),
tags = reverse(lib.urls.views_OrganizationsTagsList, args=(obj.pk,))
)
)
class AuditTrailSerializer(BaseSerializer):
# add the URL and related resources
url = serializers.CharField(source='get_absolute_url', read_only=True)
related = serializers.SerializerMethodField('get_related')
class Meta:
model = AuditTrail
fields = ('url', 'id', 'modified_by', 'delta', 'detail', 'comment')
@@ -80,7 +80,7 @@ class ProjectSerializer(BaseSerializer):
class InventorySerializer(BaseSerializer):
# add the URL and related resources
url = serializers.CharField(source='get_absolute_url', read_only=True)
related = serializers.SerializerMethodField('get_related')
@@ -145,7 +145,7 @@ class CredentialSerializer(BaseSerializer):
class Meta:
model = Credential
fields = (
'url', 'id', 'related', 'name', 'description', 'creation_date',
'url', 'id', 'related', 'name', 'description', 'creation_date',
'default_username', 'ssh_key_data', 'ssh_key_unlock', 'ssh_password', 'sudo_password',
'user', 'team'
)
@@ -154,12 +154,22 @@ class CredentialSerializer(BaseSerializer):
# FIXME: add related resources: projects, users, organizations
return dict()
def validate(self, attrs):
''' some fields cannot be changed once written '''
if self.object is not None:
# this is an update
if self.object.user != attrs['user']:
raise serializers.ValidationError("user cannot be changed")
if self.object.team != attrs['team']:
raise serializers.ValidationError("team cannot be changed")
return attrs
class UserSerializer(BaseSerializer):
# add the URL and related resources
url = serializers.SerializerMethodField('get_absolute_url_override')
related = serializers.SerializerMethodField('get_related')
class Meta:
model = User
fields = ('url', 'id', 'username', 'first_name', 'last_name', 'email', 'is_active', 'is_superuser', 'related')
@@ -177,7 +187,7 @@ class UserSerializer(BaseSerializer):
class TagSerializer(BaseSerializer):
# add the URL and related resources
url = serializers.CharField(source='get_absolute_url', read_only=True)
related = serializers.SerializerMethodField('get_related')