9 files changed, 27 insertions, 0 deletions
diff --git a/bug/comment.go b/bug/comment.go
index db5cc45e..67936634 100644
--- a/bug/comment.go
+++ b/bug/comment.go
@@ -24,3 +24,6 @@ func (c Comment) FormatTimeRel() string {
 func (c Comment) FormatTime() string {
 	return c.UnixTime.Time().Format("Mon Jan 2 15:04:05 2006 +0200")
 }
+
+// Sign post method for gqlgen
+func (c Comment) IsAuthored() {}
diff --git a/bug/op_add_comment.go b/bug/op_add_comment.go
index e304a6ef..c19b9593 100644
--- a/bug/op_add_comment.go
+++ b/bug/op_add_comment.go
@@ -69,6 +69,9 @@ func (op *AddCommentOperation) Validate() error {
 	return nil
 }
 
+// Sign post method for gqlgen
+func (op *AddCommentOperation) IsAuthored() {}
+
 func NewAddCommentOp(author Person, unixTime int64, message string, files []git.Hash) *AddCommentOperation {
 	return &AddCommentOperation{
 		OpBase:  newOpBase(AddCommentOp, author, unixTime),
diff --git a/bug/op_create.go b/bug/op_create.go
index 45387d19..3816d8b7 100644
--- a/bug/op_create.go
+++ b/bug/op_create.go
@@ -81,6 +81,9 @@ func (op *CreateOperation) Validate() error {
 	return nil
 }
 
+// Sign post method for gqlgen
+func (op *CreateOperation) IsAuthored() {}
+
 func NewCreateOp(author Person, unixTime int64, title, message string, files []git.Hash) *CreateOperation {
 	return &CreateOperation{
 		OpBase:  newOpBase(CreateOp, author, unixTime),
diff --git a/bug/op_edit_comment.go b/bug/op_edit_comment.go
index 282b73bb..bc87310a 100644
--- a/bug/op_edit_comment.go
+++ b/bug/op_edit_comment.go
@@ -92,6 +92,9 @@ func (op *EditCommentOperation) Validate() error {
 	return nil
 }
 
+// Sign post method for gqlgen
+func (op *EditCommentOperation) IsAuthored() {}
+
 func NewEditCommentOp(author Person, unixTime int64, target git.Hash, message string, files []git.Hash) *EditCommentOperation {
 	return &EditCommentOperation{
 		OpBase:  newOpBase(EditCommentOp, author, unixTime),
diff --git a/bug/op_label_change.go b/bug/op_label_change.go
index b7957b86..d7aab06b 100644
--- a/bug/op_label_change.go
+++ b/bug/op_label_change.go
@@ -97,6 +97,9 @@ func (op *LabelChangeOperation) Validate() error {
 	return nil
 }
 
+// Sign post method for gqlgen
+func (op *LabelChangeOperation) IsAuthored() {}
+
 func NewLabelChangeOperation(author Person, unixTime int64, added, removed []Label) *LabelChangeOperation {
 	return &LabelChangeOperation{
 		OpBase:  newOpBase(LabelChangeOp, author, unixTime),
diff --git a/bug/op_noop.go b/bug/op_noop.go
index 06e3496a..ac898dde 100644
--- a/bug/op_noop.go
+++ b/bug/op_noop.go
@@ -27,6 +27,9 @@ func (op *NoOpOperation) Validate() error {
 	return opBaseValidate(op, NoOpOp)
 }
 
+// Sign post method for gqlgen
+func (op *NoOpOperation) IsAuthored() {}
+
 func NewNoOpOp(author Person, unixTime int64) *NoOpOperation {
 	return &NoOpOperation{
 		OpBase: newOpBase(NoOpOp, author, unixTime),
diff --git a/bug/op_set_metadata.go b/bug/op_set_metadata.go
index 68cf1d51..aac81f3b 100644
--- a/bug/op_set_metadata.go
+++ b/bug/op_set_metadata.go
@@ -53,6 +53,9 @@ func (op *SetMetadataOperation) Validate() error {
 	return nil
 }
 
+// Sign post method for gqlgen
+func (op *SetMetadataOperation) IsAuthored() {}
+
 func NewSetMetadataOp(author Person, unixTime int64, target git.Hash, newMetadata map[string]string) *SetMetadataOperation {
 	return &SetMetadataOperation{
 		OpBase:      newOpBase(SetMetadataOp, author, unixTime),
diff --git a/bug/op_set_status.go b/bug/op_set_status.go
index 62f373ec..54f476cb 100644
--- a/bug/op_set_status.go
+++ b/bug/op_set_status.go
@@ -53,6 +53,9 @@ func (op *SetStatusOperation) Validate() error {
 	return nil
 }
 
+// Sign post method for gqlgen
+func (op *SetStatusOperation) IsAuthored() {}
+
 func NewSetStatusOp(author Person, unixTime int64, status Status) *SetStatusOperation {
 	return &SetStatusOperation{
 		OpBase: newOpBase(SetStatusOp, author, unixTime),
diff --git a/bug/op_set_title.go b/bug/op_set_title.go
index 9b7d1533..b631ca18 100644
--- a/bug/op_set_title.go
+++ b/bug/op_set_title.go
@@ -74,6 +74,9 @@ func (op *SetTitleOperation) Validate() error {
 	return nil
 }
 
+// Sign post method for gqlgen
+func (op *SetTitleOperation) IsAuthored() {}
+
 func NewSetTitleOp(author Person, unixTime int64, title string, was string) *SetTitleOperation {
 	return &SetTitleOperation{
 		OpBase: newOpBase(SetTitleOp, author, unixTime),