Fixing edit direct channel header (#2842)

api/channel.go

@@ -113,7 +113,7 @@ func createDirectChannel(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if sc, err := CreateDirectChannel(c, userId); err != nil {
+	if sc, err := CreateDirectChannel(c.Session.UserId, userId); err != nil {
 		c.Err = err
 		return
 	} else {
@@ -121,19 +121,14 @@ func createDirectChannel(c *Context, w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-func CreateDirectChannel(c *Context, otherUserId string) (*model.Channel, *model.AppError) {
+func CreateDirectChannel(userId string, otherUserId string) (*model.Channel, *model.AppError) {
-	if len(otherUserId) != 26 {
-		return nil, model.NewLocAppError("CreateDirectChannel", "api.channel.create_direct_channel.invalid_user.app_error", nil, otherUserId)
-	}
-
 	uc := Srv.Store.User().Get(otherUserId)
 
 	channel := new(model.Channel)
 
 	channel.DisplayName = ""
-	channel.Name = model.GetDMNameFromIds(otherUserId, c.Session.UserId)
+	channel.Name = model.GetDMNameFromIds(otherUserId, userId)
 
-	channel.TeamId = c.TeamId
 	channel.Header = ""
 	channel.Type = model.CHANNEL_DIRECT
 
@@ -142,13 +137,11 @@ func CreateDirectChannel(c *Context, otherUserId string) (*model.Channel, *model
 	}
 
 	cm1 := &model.ChannelMember{
-		UserId:      c.Session.UserId,
+		UserId:      userId,
-		Roles:       model.CHANNEL_ROLE_ADMIN,
 		NotifyProps: model.GetDefaultChannelNotifyProps(),
 	}
 	cm2 := &model.ChannelMember{
 		UserId:      otherUserId,
-		Roles:       "",
 		NotifyProps: model.GetDefaultChannelNotifyProps(),
 	}
 
@@ -274,7 +267,7 @@ func updateChannelHeader(c *Context, w http.ResponseWriter, r *http.Request) {
 		channel := cresult.Data.(*model.Channel)
 		// Don't need to do anything channel member, just wanted to confirm it exists
 
-		if !c.HasPermissionsToTeam(channel.TeamId, "updateChannelHeader") {
+		if channel.TeamId != "" && !c.HasPermissionsToTeam(channel.TeamId, "updateChannelHeader") {
 			return
 		}
 		oldChannelHeader := channel.Header

api/channel_test.go

@@ -215,6 +215,20 @@ func TestUpdateChannelHeader(t *testing.T) {
 		t.Fatal("should have errored on bad channel header")
 	}
 
+	rchannel := Client.Must(Client.CreateDirectChannel(th.BasicUser2.Id)).Data.(*model.Channel)
+	data["channel_id"] = rchannel.Id
+	data["channel_header"] = "new header"
+	var upChanneld *model.Channel
+	if result, err := Client.UpdateChannelHeader(data); err != nil {
+		t.Fatal(err)
+	} else {
+		upChanneld = result.Data.(*model.Channel)
+	}
+
+	if upChanneld.Header != data["channel_header"] {
+		t.Fatal("Failed to update header")
+	}
+
 	th.LoginBasic2()
 
 	data["channel_id"] = channel1.Id

api/command_msg.go

@@ -64,7 +64,7 @@ func (me *msgProvider) DoCommand(c *Context, channelId string, message string) *
 
 				if channel := <-Srv.Store.Channel().GetByName(c.TeamId, channelName); channel.Err != nil {
 					if channel.Err.Id == "store.sql_channel.get_by_name.missing.app_error" {
-						if directChannel, err := CreateDirectChannel(c, userProfile.Id); err != nil {
+						if directChannel, err := CreateDirectChannel(c.Session.UserId, userProfile.Id); err != nil {
 							c.Err = err
 							return &model.CommandResponse{Text: c.T("api.command_msg.dm_fail.app_error"), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
 						} else {