I can display the posts in a topic, albeit imperfectly

conference.go

@@ -25,7 +25,7 @@ import (
 	"git.erbosoft.com/amy/amsterdam/htmlcheck"
 	"git.erbosoft.com/amy/amsterdam/ui"
 	"github.com/CloudyKit/jet/v6"
-	"github.com/labstack/gommon/log"
+	log "github.com/sirupsen/logrus"
 )
 
 /* Conferences displayes the list of conferences in a community.
@@ -513,13 +513,14 @@ func ReadPosts(ctxt ui.AmContext) (string, any, error) {
 	postsPostRef := plc.AsString()
 
 	// Render the output.
+	ctxt.VarMap().Set("amsterdam_pageTitle", fmt.Sprintf("%s: %s", topic.Name, summaryLine))
 	ctxt.VarMap().Set("topicName", topic.Name)
 	ctxt.VarMap().Set("summaryLine", summaryLine)
 	ctxt.VarMap().Set("lastRead", lastRead)
 	ctxt.VarMap().Set("pageSize", ctxt.Globals().PostsPerPage)
 	ctxt.VarMap().Set("post_confRef", topicConferenceRef)
 	ctxt.VarMap().SetFunc("post_getOverrideLine", templateOverrideLine)
-	ctxt.VarMap().SetFunc("post.getOverrideLink", templateOverrideLink)
+	ctxt.VarMap().SetFunc("post_getOverrideLink", templateOverrideLink)
 	ctxt.VarMap().SetFunc("post_getText", templatePostText)
 	ctxt.VarMap().SetFunc("post_getUserName", templateExtractUserName)
 	ctxt.VarMap().Set("post_stem", fmt.Sprintf("/comm/%s/conf/%s/r/%d", comm.Alias, ctxt.GetScratch("currentAlias").(string), topic.Number))
@@ -532,7 +533,6 @@ func ReadPosts(ctxt ui.AmContext) (string, any, error) {
 	ctxt.VarMap().Set("rangeStart", postRange[0])
 	ctxt.VarMap().Set("topicListLink", fmt.Sprintf("/comm/%s/conf/%s", comm.Alias, ctxt.GetScratch("currentAlias").(string)))
 	ctxt.VarMap().Set("topicNum", topic.Number)
-	ctxt.VarMap().Set("amsterdam_pageTitle", fmt.Sprintf("%s: %s", topic.Name, summaryLine))
 	if resetLastRead {
 		user := ctxt.CurrentUser()
 		ampool.Submit(func(ctx context.Context) {

database/post.go

@@ -89,11 +89,15 @@ func AmGetPost(ctx context.Context, postId int64) (*PostHeader, error) {
 	return &(dbdata[0]), nil
 }
 
-func AmGetPostRange(ctx context.Context, topic *Topic, first, last int32) ([]PostHeader, error) {
-	var rc []PostHeader
-	err := amdb.SelectContext(ctx, &rc, "SELECT * FROM posts WHERE topicid = ? AND num >= ? AND num <= ? ORDER BY num", topic.TopicId, first, last)
+func AmGetPostRange(ctx context.Context, topic *Topic, first, last int32) ([]*PostHeader, error) {
+	var posts []PostHeader
+	err := amdb.SelectContext(ctx, &posts, "SELECT * FROM posts WHERE topicid = ? AND num >= ? AND num <= ? ORDER BY num", topic.TopicId, first, last)
 	if err != nil {
 		return nil, err
 	}
+	rc := make([]*PostHeader, len(posts))
+	for i := range posts {
+		rc[i] = &(posts[i])
+	}
 	return rc, nil
 }

ui/amcontext.go

@@ -62,6 +62,7 @@ type AmContext interface {
 	ReplaceUser(*database.User)
 	SaveSession() error
 	SubRender(string) ([]byte, error)
+	SubRender2(string, map[string]any) ([]byte, error)
 	SetCommunityContext(string) error
 	SetLeftMenu(string)
 	SetLoginCookie(string)
@@ -320,6 +321,27 @@ func (c *amContext) SubRender(name string) ([]byte, error) {
 	return buf.Bytes(), err
 }
 
+func (c *amContext) SubRender2(name string, vals map[string]any) ([]byte, error) {
+	view, err := views.GetTemplate(name)
+	if err != nil {
+		log.Errorf("unable to load template \"%s\": %v", name, err)
+		return nil, err
+	}
+	newmap := make(jet.VarMap)
+	for k, v := range c.VarMap() {
+		newmap.Set(k, v)
+	}
+	for k, v := range vals {
+		newmap.Set(k, v)
+	}
+	buf := new(bytes.Buffer)
+	err = view.Execute(buf, newmap, c)
+	if err != nil {
+		log.Errorf("template \"%s\" failed subrender exec: %v", name, err)
+	}
+	return buf.Bytes(), err
+}
+
 /* SetCommunityContext establishes the community context from a (ID or alias) parameter.
  * Parameters:
  *     param - String parameter selecting the community.

ui/views/posts.jet

@@ -74,17 +74,12 @@
 
         <!-- Messages -->
         <div class="space-y-6 mb-8">
-            {{ post_userName := "" }}
-            {{ post_text := "" }}
-            {{ post_overrideLine := "" }}
-            {{ post_overrideLink := "" }}
-            {{ range i, post_cur := posts }}
-                {{ post_userName = post_getUserName(post_cur, .) }}
-                {{ post_text = post_getText(post_cur, .) }}
-                {{ post_overrideLine = post_getOverrideLine(post_cur, .) }}
-                {{ post_overrideLink = post_getOverrideLink(post_cur, post_topicPermalink) }}
-                {{ .SubRender("singlepost.jet") | raw }}
-                {{ if pin == post_cur.Num }}<hr/>{{ end }}
+            {{ m := map("foo", "bar") }}
+            {{ range i, p := posts }}
+                {{ m = map("post_cur", p, "post_userName", post_getUserName(p, .), "post_text", post_getText(p, .),
+                           "post_overrideLine", post_getOverrideLine(p, .), "post_overrideLink", post_getOverrideLink(p, post_topicPermalink)) }}
+                {{ .SubRender2("singlepost.jet", m) | raw }}
+                {{ if pin == p.Num }}<hr/>{{ end }}
             {{ end }}
         </div>