fix

models/db/search.go

@@ -26,8 +26,10 @@ const (
 	SearchOrderByForksReverse          SearchOrderBy = "num_forks DESC"
 )
 
-const (
-	// Which means a condition to filter the records which don't match any id.
-	// It's different from zero which means the condition could be ignored.
-	NoConditionID = -1
-)
+// NoConditionID means a condition to filter the records which don't match any id.
+// eg: "milestone_id=-1" means "find the items without any milestone.
+const NoConditionID int64 = -1
+
+// NonExistingID means a condition to match no result (eg: a non-existing user)
+// It doesn't use -1 or -2 because they are used as builtin users.
+const NonExistingID int64 = -1000000

models/issues/issue_search.go

@@ -27,8 +27,8 @@ type IssuesOptions struct { //nolint
 	RepoIDs            []int64 // overwrites RepoCond if the length is not 0
 	AllPublic          bool    // include also all public repositories
 	RepoCond           builder.Cond
-	AssigneeID         int64
-	PosterID           int64
+	AssigneeID         optional.Option[int64]
+	PosterID           optional.Option[int64]
 	MentionedID        int64
 	ReviewRequestedID  int64
 	ReviewedID         int64
@@ -231,15 +231,8 @@ func applyConditions(sess *xorm.Session, opts *IssuesOptions) {
 		sess.And("issue.is_closed=?", opts.IsClosed.Value())
 	}
 
-	if opts.AssigneeID > 0 {
-		applyAssigneeCondition(sess, opts.AssigneeID)
-	} else if opts.AssigneeID == db.NoConditionID {
-		sess.Where("issue.id NOT IN (SELECT issue_id FROM issue_assignees)")
-	}
-
-	if opts.PosterID > 0 {
-		applyPosterCondition(sess, opts.PosterID)
-	}
+	applyAssigneeCondition(sess, opts.AssigneeID)
+	applyPosterCondition(sess, opts.PosterID)
 
 	if opts.MentionedID > 0 {
 		applyMentionedCondition(sess, opts.MentionedID)
@@ -359,13 +352,27 @@ func issuePullAccessibleRepoCond(repoIDstr string, userID int64, org *organizati
 	return cond
 }
 
-func applyAssigneeCondition(sess *xorm.Session, assigneeID int64) {
-	sess.Join("INNER", "issue_assignees", "issue.id = issue_assignees.issue_id").
-		And("issue_assignees.assignee_id = ?", assigneeID)
+func applyAssigneeCondition(sess *xorm.Session, assigneeID optional.Option[int64]) {
+	if assigneeID == nil {
+		return
+	}
+	if !assigneeID.Has() /* none */ || assigneeID.Value() == db.NoConditionID || assigneeID.Value() == 0 {
+		// assignee is different from others, 0 also means no assignee
+		sess.Where("issue.id NOT IN (SELECT issue_id FROM issue_assignees)")
+	} else {
+		sess.Join("INNER", "issue_assignees", "issue.id = issue_assignees.issue_id").
+			And("issue_assignees.assignee_id = ?", assigneeID.Value())
+	}
 }
 
-func applyPosterCondition(sess *xorm.Session, posterID int64) {
-	sess.And("issue.poster_id=?", posterID)
+func applyPosterCondition(sess *xorm.Session, posterID optional.Option[int64]) {
+	if posterID == nil {
+		return
+	}
+	// poster doesn't need to support db.NoConditionID(-1), so just use the value as-is
+	if posterID.Has() {
+		sess.And("issue.poster_id=?", posterID.Value())
+	}
 }
 
 func applyMentionedCondition(sess *xorm.Session, mentionedID int64) {

models/issues/issue_stats.go

@@ -151,15 +151,9 @@ func applyIssuesOptions(sess *xorm.Session, opts *IssuesOptions, issueIDs []int6
 
 	applyProjectCondition(sess, opts)
 
-	if opts.AssigneeID > 0 {
-		applyAssigneeCondition(sess, opts.AssigneeID)
-	} else if opts.AssigneeID == db.NoConditionID {
-		sess.Where("issue.id NOT IN (SELECT issue_id FROM issue_assignees)")
-	}
+	applyAssigneeCondition(sess, opts.AssigneeID)
 
-	if opts.PosterID > 0 {
-		applyPosterCondition(sess, opts.PosterID)
-	}
+	applyPosterCondition(sess, opts.PosterID)
 
 	if opts.MentionedID > 0 {
 		applyMentionedCondition(sess, opts.MentionedID)

models/issues/issue_test.go

@@ -16,6 +16,7 @@ import (
 	repo_model "code.gitea.io/gitea/models/repo"
 	"code.gitea.io/gitea/models/unittest"
 	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/optional"
 	"code.gitea.io/gitea/modules/setting"
 
 	"github.com/stretchr/testify/assert"
@@ -155,7 +156,7 @@ func TestIssues(t *testing.T) {
 	}{
 		{
 			issues_model.IssuesOptions{
-				AssigneeID: 1,
+				AssigneeID: optional.Some(int64(1)),
 				SortType:   "oldest",
 			},
 			[]int64{1, 6},

modules/indexer/issues/db/options.go

@@ -54,8 +54,8 @@ func ToDBOptions(ctx context.Context, options *internal.SearchOptions) (*issue_m
 		RepoIDs:            options.RepoIDs,
 		AllPublic:          options.AllPublic,
 		RepoCond:           nil,
-		AssigneeID:         convertID(options.AssigneeID),
-		PosterID:           convertID(options.PosterID),
+		AssigneeID:         options.AssigneeID,
+		PosterID:           options.PosterID,
 		MentionedID:        convertID(options.MentionID),
 		ReviewRequestedID:  convertID(options.ReviewRequestedID),
 		ReviewedID:         convertID(options.ReviewedID),

modules/indexer/issues/dboptions.go

@@ -40,14 +40,14 @@ func ToSearchOptions(keyword string, opts *issues_model.IssuesOptions) *SearchOp
 
 	if opts.ProjectID > 0 {
 		searchOpt.ProjectID = optional.Some(opts.ProjectID)
-	} else if opts.ProjectID == -1 { // FIXME: this is inconsistent from other places
+	} else if opts.ProjectID == db.NoConditionID { // FIXME: this is inconsistent from other places
 		searchOpt.ProjectID = optional.Some[int64](0) // Those issues with no project(projectid==0)
 	}
 
-	if opts.AssigneeID > 0 {
-		searchOpt.AssigneeID = optional.Some(opts.AssigneeID)
-	} else if opts.AssigneeID == -1 { // FIXME: this is inconsistent from other places
-		searchOpt.AssigneeID = optional.Some[int64](0)
+	if opts.AssigneeID.Value() == db.NoConditionID || (searchOpt.AssigneeID != nil && !searchOpt.AssigneeID.Has()) {
+		searchOpt.AssigneeID = optional.Some[int64](0) // FIXME: this is inconsistent from other places, 0 means "no assignee"
+	} else if opts.AssigneeID.Has() && opts.AssigneeID.Value() != 0 {
+		searchOpt.AssigneeID = opts.AssigneeID
 	}
 
 	// See the comment of issues_model.SearchOptions for the reason why we need to convert
@@ -62,7 +62,7 @@ func ToSearchOptions(keyword string, opts *issues_model.IssuesOptions) *SearchOp
 	}
 
 	searchOpt.ProjectColumnID = convertID(opts.ProjectColumnID)
-	searchOpt.PosterID = convertID(opts.PosterID)
+	searchOpt.PosterID = opts.PosterID
 	searchOpt.MentionID = convertID(opts.MentionedID)
 	searchOpt.ReviewedID = convertID(opts.ReviewedID)
 	searchOpt.ReviewRequestedID = convertID(opts.ReviewRequestedID)

modules/indexer/issues/indexer_test.go

@@ -191,7 +191,7 @@ func searchIssueByID(t *testing.T) {
 		},
 		{
 			// NOTE: This tests no assignees filtering and also ToSearchOptions() to ensure it will set AssigneeID to 0 when it is passed as -1.
-			opts:        *ToSearchOptions("", &issues.IssuesOptions{AssigneeID: -1}),
+			opts:        *ToSearchOptions("", &issues.IssuesOptions{AssigneeID: optional.Some(db.NoConditionID)}),
 			expectedIDs: []int64{22, 21, 16, 15, 14, 13, 12, 11, 20, 5, 19, 18, 10, 7, 4, 9, 8, 3, 2},
 		},
 		{

routers/web/org/projects.go

@@ -21,6 +21,7 @@ import (
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/templates"
 	"code.gitea.io/gitea/modules/web"
+	"code.gitea.io/gitea/routers/web/shared/issue"
 	shared_user "code.gitea.io/gitea/routers/web/shared/user"
 	"code.gitea.io/gitea/services/context"
 	"code.gitea.io/gitea/services/forms"
@@ -334,23 +335,15 @@ func ViewProject(ctx *context.Context) {
 		return
 	}
 
-	var labelIDs []int64
-	// 1,-2 means including label 1 and excluding label 2
-	// 0 means issues with no label
-	// blank means labels will not be filtered for issues
-	selectLabels := ctx.FormString("labels")
-	if selectLabels != "" {
-		labelIDs, err = base.StringsToInt64s(strings.Split(selectLabels, ","))
-		if err != nil {
-			ctx.Flash.Error(ctx.Tr("invalid_data", selectLabels), true)
-		}
+	labelIDs := issue.PrepareFilterIssueLabels(ctx, project.RepoID, project.Owner)
+	if ctx.Written() {
+		return
 	}
-
 	assigneeID := ctx.FormInt64("assignee")
 
 	issuesMap, err := issues_model.LoadIssuesFromColumnList(ctx, columns, &issues_model.IssuesOptions{
 		LabelIDs:   labelIDs,
-		AssigneeID: assigneeID,
+		AssigneeID: optional.Some(assigneeID),
 	})
 	if err != nil {
 		ctx.ServerError("LoadIssuesOfColumns", err)
@@ -426,8 +419,6 @@ func ViewProject(ctx *context.Context) {
 		return
 	}
 	ctx.Data["Assignees"] = shared_user.MakeSelfOnTop(ctx.Doer, assigneeUsers)
-
-	ctx.Data["SelectLabels"] = selectLabels
 	ctx.Data["AssigneeID"] = assigneeID
 
 	project.RenderedContent = templates.NewRenderUtils(ctx).MarkdownToHtml(project.Description)