show text 'more...' only if there is really (probably) more to see

browser/resource.py

@@ -276,11 +276,17 @@ class ResourceView(BaseView):
             #return util.toUnicode(wp.render(self.request))
         return super(ResourceView, self).renderText(text, contentType)
 
+    showMore = True
+
     def renderShortText(self):
         return self.renderDescription() or self.createShortText(self.render())
 
     def createShortText(self, text=None):
-        return extractFirstPart(text or self.render())
+        text = (text or self.render()).strip()
+        shortText = extractFirstPart(text)
+        if shortText == text:
+            self.showMore = False
+        return shortText
 
     def download(self):
         """ Force download, e.g. of a PDF file """

compound/book/view_macros.pt

@@ -146,11 +146,12 @@
         <a tal:attributes="href python:view.getUrlForTarget(related.context)"
            tal:content="related/title" />
       </h3>
-      <div>
-        <div tal:replace="structure related/renderShortText" />
+      <div tal:define="shortText related/renderShortText">
+        <div tal:replace="structure shortText" />
         <p>
           <a i18n:translate=""
-              tal:attributes="href python:view.getUrlForTarget(related.context)">
+             tal:condition="related/showMore"
+             tal:attributes="href python:view.getUrlForTarget(related.context)">
             more...</a></p>
         <div tal:repeat="image python:
                             item.images[repeat['related'].index() + 1]">