Refactor some Str2html code (#29397)

This PR touches the most interesting part of the "template refactoring".

1. Unclear variable type. Especially for "web/feed/convert.go":
sometimes it uses text, sometimes it uses HTML.
2. Assign text content to "RenderedContent" field, for example: `
project.RenderedContent = project.Description` in web/org/projects.go
3. Assign rendered content to text field, for example: `r.Note =
rendered content` in web/repo/release.go
4. (possible) Incorrectly calling `{{Str2html
.PackageDescriptor.Metadata.ReleaseNotes}}` in
package/content/nuget.tmpl, I guess the name Str2html misleads
developers to use it to "render string to html", but it only sanitizes.
if ReleaseNotes really contains HTML, then this is not a problem.

(cherry picked from commit e71eb8930a5d0f60874b038c223498b41ad65592)

Conflicts:
	modules/templates/util_string.go
	trivial context conflict

8 files changed, 11 insertions, 11 deletions

diff --git a/templates/repo/diff/comments.tmpl b/templates/repo/diff/comments.tmpl
index e567417fa6..e00487a22c 100644
--- a/templates/repo/diff/comments.tmpl
+++ b/templates/repo/diff/comments.tmpl
@@ -55,7 +55,7 @@
 		<div class="ui attached segment comment-body">
 			<div class="render-content markup" {{if or $.Permission.IsAdmin $.HasIssuesOrPullsWritePermission (and $.root.IsSigned (eq $.root.SignedUserID .PosterID))}}data-can-edit="true"{{end}}>
 			{{if .RenderedContent}}
-				{{.RenderedContent|Str2html}}
+				{{.RenderedContent}}
 			{{else}}
 				<span class="no-content">{{ctx.Locale.Tr "repo.issues.no_content"}}</span>
 			{{end}}
diff --git a/templates/repo/issue/milestone_issues.tmpl b/templates/repo/issue/milestone_issues.tmpl
index d9495d9b77..35a8a77680 100644
--- a/templates/repo/issue/milestone_issues.tmpl
+++ b/templates/repo/issue/milestone_issues.tmpl
@@ -22,7 +22,7 @@
 		</div>
 		{{if .Milestone.RenderedContent}}
 		<div class="markup content gt-mb-4">
-				{{.Milestone.RenderedContent|Str2html}}
+				{{.Milestone.RenderedContent}}
 		</div>
 		{{end}}
 		<div class="gt-df gt-fc gt-gap-3">
diff --git a/templates/repo/issue/milestones.tmpl b/templates/repo/issue/milestones.tmpl
index 698e3fffba..363ba7e3a2 100644
--- a/templates/repo/issue/milestones.tmpl
+++ b/templates/repo/issue/milestones.tmpl
@@ -82,7 +82,7 @@
 					</div>
 					{{if .Content}}
 						<div class="markup content">
-							{{.RenderedContent|Str2html}}
+							{{.RenderedContent}}
 						</div>
 					{{end}}
 				</li>
diff --git a/templates/repo/issue/view_content.tmpl b/templates/repo/issue/view_content.tmpl
index 91db68c810..9b2a29a0b7 100644
--- a/templates/repo/issue/view_content.tmpl
+++ b/templates/repo/issue/view_content.tmpl
@@ -54,7 +54,7 @@
 					<div class="ui attached segment comment-body" role="article">
 						<div class="render-content markup" {{if or $.Permission.IsAdmin $.HasIssuesOrPullsWritePermission $.IsIssuePoster}}data-can-edit="true"{{end}}>
 							{{if .Issue.RenderedContent}}
-								{{.Issue.RenderedContent|Str2html}}
+								{{.Issue.RenderedContent}}
 							{{else}}
 								<span class="no-content">{{ctx.Locale.Tr "repo.issues.no_content"}}</span>
 							{{end}}
diff --git a/templates/repo/issue/view_content/attachments.tmpl b/templates/repo/issue/view_content/attachments.tmpl
index 1fb6f2f2c2..58f4c702b3 100644
--- a/templates/repo/issue/view_content/attachments.tmpl
+++ b/templates/repo/issue/view_content/attachments.tmpl
@@ -8,7 +8,7 @@
 			<div class="gt-f1 gt-p-3">
 				<a target="_blank" rel="noopener noreferrer" href="{{.DownloadURL}}" title="{{ctx.Locale.Tr "repo.issues.attachment.open_tab" .Name}}">
 					{{if FilenameIsImage .Name}}
-						{{if not (StringUtils.Contains $.Content .UUID)}}
+						{{if not (StringUtils.Contains (StringUtils.ToString $.Content) .UUID)}}
 							{{$hasThumbnails = true}}
 						{{end}}
 						{{svg "octicon-file"}}
@@ -29,7 +29,7 @@
 		<div class="ui small thumbnails">
 			{{- range .Attachments -}}
 				{{if FilenameIsImage .Name}}
-					{{if not (StringUtils.Contains $.Content .UUID)}}
+					{{if not (StringUtils.Contains (StringUtils.ToString $.Content) .UUID)}}
 					<a target="_blank" rel="noopener noreferrer" href="{{.DownloadURL}}">
 						<img alt="{{.Name}}" src="{{.DownloadURL}}" title="{{ctx.Locale.Tr "repo.issues.attachment.open_tab" .Name}}">
 					</a>
diff --git a/templates/repo/issue/view_content/comments.tmpl b/templates/repo/issue/view_content/comments.tmpl
index 79875d8176..9f3b8dbad2 100644
--- a/templates/repo/issue/view_content/comments.tmpl
+++ b/templates/repo/issue/view_content/comments.tmpl
@@ -61,7 +61,7 @@
 					<div class="ui attached segment comment-body" role="article">
 						<div class="render-content markup" {{if or $.Permission.IsAdmin $.HasIssuesOrPullsWritePermission (and $.IsSigned (eq $.SignedUserID .PosterID))}}data-can-edit="true"{{end}}>
 							{{if .RenderedContent}}
-								{{.RenderedContent|Str2html}}
+								{{.RenderedContent}}
 							{{else}}
 								<span class="no-content">{{ctx.Locale.Tr "repo.issues.no_content"}}</span>
 							{{end}}
@@ -436,7 +436,7 @@
 						<div class="ui attached segment comment-body">
 							<div class="render-content markup" {{if or $.Permission.IsAdmin $.HasIssuesOrPullsWritePermission (and $.IsSigned (eq $.SignedUserID .PosterID))}}data-can-edit="true"{{end}}>
 								{{if .RenderedContent}}
-									{{.RenderedContent|Str2html}}
+									{{.RenderedContent}}
 								{{else}}
 									<span class="no-content">{{ctx.Locale.Tr "repo.issues.no_content"}}</span>
 								{{end}}
@@ -635,7 +635,7 @@
 							<div class="ui attached segment">
 								<div class="render-content markup">
 									{{if .RenderedContent}}
-										{{.RenderedContent|Str2html}}
+										{{.RenderedContent}}
 									{{else}}
 										<span class="no-content">{{ctx.Locale.Tr "repo.issues.no_content"}}</span>
 									{{end}}
diff --git a/templates/repo/issue/view_content/conversation.tmpl b/templates/repo/issue/view_content/conversation.tmpl
index 1bad0e9b55..1afc744aee 100644
--- a/templates/repo/issue/view_content/conversation.tmpl
+++ b/templates/repo/issue/view_content/conversation.tmpl
@@ -87,7 +87,7 @@
 						<div class="text comment-content">
 							<div class="render-content markup" {{if or $.Permission.IsAdmin $.HasIssuesOrPullsWritePermission (and $.IsSigned (eq $.SignedUserID .PosterID))}}data-can-edit="true"{{end}}>
 							{{if .RenderedContent}}
-								{{.RenderedContent|Str2html}}
+								{{.RenderedContent}}
 							{{else}}
 								<span class="no-content">{{ctx.Locale.Tr "repo.issues.no_content"}}</span>
 							{{end}}
diff --git a/templates/repo/release/list.tmpl b/templates/repo/release/list.tmpl
index d533cf6757..c26a58f23a 100644
--- a/templates/repo/release/list.tmpl
+++ b/templates/repo/release/list.tmpl
@@ -58,7 +58,7 @@
 							{{end}}
 						</p>
 						<div class="markup desc">
-							{{Str2html $release.Note}}
+							{{$release.RenderedNote}}
 						</div>
 						<div class="divider"></div>
 						<details class="download" {{if eq $idx 0}}open{{end}}>