Support no label/assignee filter and batch clearing labels/assignees (#24707)

Since milestones has been implemented, this PR will fix #3407

---------

Co-authored-by: Jason Song <i@wolfogre.com>

models/issues/issue.go

@@ -1251,6 +1251,8 @@ func (opts *IssuesOptions) setupSessionNoLimit(sess *xorm.Session) {
 
 	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 {
@@ -1312,16 +1314,20 @@ func (opts *IssuesOptions) setupSessionNoLimit(sess *xorm.Session) {
 		sess.And(builder.Eq{"repository.is_archived": opts.IsArchived.IsTrue()})
 	}
 
-	if opts.LabelIDs != nil {
+	if len(opts.LabelIDs) > 0 {
+		if opts.LabelIDs[0] == 0 {
+			sess.Where("issue.id NOT IN (SELECT issue_id FROM issue_label)")
+		} else {
 			for i, labelID := range opts.LabelIDs {
 				if labelID > 0 {
 					sess.Join("INNER", fmt.Sprintf("issue_label il%d", i),
 						fmt.Sprintf("issue.id = il%[1]d.issue_id AND il%[1]d.label_id = %[2]d", i, labelID))
-			} else {
+				} else if labelID < 0 { // 0 is not supported here, so just ignore it
 					sess.Where("issue.id not in (select issue_id from issue_label where label_id = ?)", -labelID)
 				}
 			}
 		}
+	}
 
 	if len(opts.IncludedLabelNames) > 0 {
 		sess.In("issue.id", BuildLabelNamesIssueIDsCondition(opts.IncludedLabelNames))
@@ -1705,21 +1711,25 @@ func getIssueStatsChunk(opts *IssueStatsOptions, issueIDs []int64) (*IssueStats,
 			sess.In("issue.id", issueIDs)
 		}
 
-		if len(opts.Labels) > 0 && opts.Labels != "0" {
+		if len(opts.Labels) > 0 {
 			labelIDs, err := base.StringsToInt64s(strings.Split(opts.Labels, ","))
 			if err != nil {
 				log.Warn("Malformed Labels argument: %s", opts.Labels)
+			} else {
+				if labelIDs[0] == 0 {
+					sess.Where("issue.id NOT IN (SELECT issue_id FROM issue_label)")
 				} else {
 					for i, labelID := range labelIDs {
 						if labelID > 0 {
 							sess.Join("INNER", fmt.Sprintf("issue_label il%d", i),
 								fmt.Sprintf("issue.id = il%[1]d.issue_id AND il%[1]d.label_id = %[2]d", i, labelID))
-					} else {
+						} else if labelID < 0 { // 0 is not supported here, so just ignore it
 							sess.Where("issue.id NOT IN (SELECT issue_id FROM issue_label WHERE label_id = ?)", -labelID)
 						}
 					}
 				}
 			}
+		}
 
 		if opts.MilestoneID > 0 {
 			sess.And("issue.milestone_id = ?", opts.MilestoneID)
@@ -1734,6 +1744,8 @@ func getIssueStatsChunk(opts *IssueStatsOptions, issueIDs []int64) (*IssueStats,
 
 		if opts.AssigneeID > 0 {
 			applyAssigneeCondition(sess, opts.AssigneeID)
+		} else if opts.AssigneeID == db.NoConditionID {
+			sess.Where("id NOT IN (SELECT issue_id FROM issue_assignees)")
 		}
 
 		if opts.PosterID > 0 {

options/locale/locale_en-US.ini

@@ -1361,6 +1361,7 @@ issues.delete_branch_at = `deleted branch <b>%s</b> %s`
 issues.filter_label = Label
 issues.filter_label_exclude = `Use <code>alt</code> + <code>click/enter</code> to exclude labels`
 issues.filter_label_no_select = All labels
+issues.filter_label_select_no_label = No Label
 issues.filter_milestone = Milestone
 issues.filter_milestone_all = All milestones
 issues.filter_milestone_none = No milestones
@@ -1371,6 +1372,7 @@ issues.filter_project_all = All projects
 issues.filter_project_none = No project
 issues.filter_assignee = Assignee
 issues.filter_assginee_no_select = All assignees
+issues.filter_assginee_no_assignee = No assignee
 issues.filter_poster = Author
 issues.filter_poster_no_select = All authors
 issues.filter_type = Type

routers/web/repo/issue.go

@@ -170,8 +170,11 @@ func issues(ctx *context.Context, milestoneID, projectID int64, isPullOption uti
 
 	repo := ctx.Repo.Repository
 	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 len(selectLabels) > 0 && selectLabels != "0" {
+	if len(selectLabels) > 0 {
 		labelIDs, err = base.StringsToInt64s(strings.Split(selectLabels, ","))
 		if err != nil {
 			ctx.ServerError("StringsToInt64s", err)

templates/repo/issue/list.tmpl

@@ -38,6 +38,7 @@
 								<input type="text" placeholder="{{.locale.Tr "repo.issues.filter_label"}}">
 							</div>
 							<span class="info">{{.locale.Tr "repo.issues.filter_label_exclude" | Safe}}</span>
+							<a class="item" href="{{$.Link}}?q={{$.Keyword}}&type={{$.ViewType}}&sort={{$.SortType}}&state={{$.State}}&labels=0&milestone={{$.MilestoneID}}&project={{$.ProjectID}}&assignee={{$.AssigneeID}}&poster={{$.PosterID}}">{{.locale.Tr "repo.issues.filter_label_select_no_label"}}</a>
 							<a class="item" href="{{$.Link}}?q={{$.Keyword}}&type={{$.ViewType}}&sort={{$.SortType}}&state={{$.State}}&milestone={{$.MilestoneID}}&project={{$.ProjectID}}&assignee={{$.AssigneeID}}&poster={{$.PosterID}}">{{.locale.Tr "repo.issues.filter_label_no_select"}}</a>
 							{{$previousExclusiveScope := "_no_scope"}}
 							{{range .Labels}}
@@ -156,6 +157,7 @@
 								<i class="icon gt-df gt-ac gt-jc">{{svg "octicon-search" 16}}</i>
 								<input type="text" placeholder="{{.locale.Tr "repo.issues.filter_assignee"}}">
 							</div>
+							<a class="item" href="{{$.Link}}?q={{$.Keyword}}&type={{$.ViewType}}&sort={{$.SortType}}&state={{$.State}}&labels={{.SelectLabels}}&milestone={{$.MilestoneID}}&project={{$.ProjectID}}&assignee=-1&poster={{$.PosterID}}">{{.locale.Tr "repo.issues.filter_assginee_no_assignee"}}</a>
 							<a class="item" href="{{$.Link}}?q={{$.Keyword}}&type={{$.ViewType}}&sort={{$.SortType}}&state={{$.State}}&labels={{.SelectLabels}}&milestone={{$.MilestoneID}}&project={{$.ProjectID}}&poster={{$.PosterID}}">{{.locale.Tr "repo.issues.filter_assginee_no_select"}}</a>
 							{{range .Assignees}}
 								<a class="{{if eq $.AssigneeID .ID}}active selected{{end}} item gt-df" href="{{$.Link}}?type={{$.ViewType}}&sort={{$.SortType}}&state={{$.State}}&labels={{$.SelectLabels}}&milestone={{$.MilestoneID}}&project={{$.ProjectID}}&assignee={{.ID}}&poster={{$.PosterID}}">
@@ -226,6 +228,9 @@
 							{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 						</span>
 						<div class="menu">
+							<div class="item issue-action" data-action="clear" data-url="{{$.RepoLink}}/issues/labels">
+								{{.locale.Tr "repo.issues.new.clear_labels"}}
+							</div>
 							{{$previousExclusiveScope := "_no_scope"}}
 							{{range .Labels}}
 								{{$exclusiveScope := .ExclusiveScope}}
@@ -313,6 +318,9 @@
 							{{svg "octicon-triangle-down" 14 "dropdown icon"}}
 						</span>
 						<div class="menu">
+							<div class="item issue-action" data-action="clear" data-url="{{$.Link}}/assignee">
+								{{.locale.Tr "repo.issues.new.clear_assignees"}}
+							</div>
 							<div class="item issue-action" data-element-id="0" data-url="{{$.Link}}/assignee">
 								{{.locale.Tr "repo.issues.action_assignee_no_select"}}
 							</div>