Bug 15851: Only display the analytics link when required

This patch makes opac-detail.pl query for analytics the same way it
would do with the generated link (i.e. based on UseControlNumber) and
passes a flag to the XSLT so it displays (or not) the 'Analytics' link.

To test:
1. Apply the first patch
2. Have a known record without analytics
3. Open the record in the OPAC
=> FAIL: It shows the 'Analytics' link
4. Have a record known to have analytics and open in OPAC, on a separate
   tab
=> SUCCESS: It shows the 'Analytics' link
5. Apply this patch and restart_all
6. Reload the tabs
=> SUCCESS: It shows the link where it has to, and hides it where it
shouldn't be displayed
7. Sign off :-D

Sponsored-by: Orex Digital

Signed-off-by: Hugo Agud <hagud@orex.es>

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

koha-tmpl/opac-tmpl/bootstrap/en/xslt/MARC21slim2OPACDetail.xsl

@@ -353,21 +353,24 @@
             </xsl:choose>
         </xsl:variable>
 
-        <xsl:element name="span">
-            <xsl:attribute name="class">results_summary analytics <xsl:value-of select="$leader7_class"/></xsl:attribute>
-            <span class="label">Analytics: </span>
-            <a>
-            <xsl:choose>
-                <xsl:when test="$UseControlNumber = '1' and marc:controlfield[@tag=001]">
-                    <xsl:attribute name="href">/cgi-bin/koha/opac-search.pl?q=rcn:<xsl:value-of select="str:encode-uri(marc:controlfield[@tag=001], true())"/>+AND+(bib-level:a+OR+bib-level:b)</xsl:attribute>
-                </xsl:when>
-                <xsl:otherwise>
-                    <xsl:attribute name="href">/cgi-bin/koha/opac-search.pl?q=Host-item:<xsl:value-of select="str:encode-uri(translate(marc:datafield[@tag=245]/marc:subfield[@code='a'], '/', ''), true())"/></xsl:attribute>
-                </xsl:otherwise>
-            </xsl:choose>
-            <xsl:text>Show analytics</xsl:text>
-            </a>
-        </xsl:element>
+        <xsl:variable name="show_analytics_link" select="marc:variables/marc:variable[@name='show_analytics_link']" />
+        <xsl:if test="$show_analytics_link='1'">
+            <xsl:element name="span">
+                <xsl:attribute name="class">results_summary analytics <xsl:value-of select="$leader7_class"/></xsl:attribute>
+                <span class="label">Analytics: </span>
+                <a>
+                <xsl:choose>
+                    <xsl:when test="$UseControlNumber = '1' and marc:controlfield[@tag=001]">
+                        <xsl:attribute name="href">/cgi-bin/koha/opac-search.pl?q=rcn:<xsl:value-of select="str:encode-uri(marc:controlfield[@tag=001], true())"/>+AND+(bib-level:a+OR+bib-level:b)</xsl:attribute>
+                    </xsl:when>
+                    <xsl:otherwise>
+                        <xsl:attribute name="href">/cgi-bin/koha/opac-search.pl?q=Host-item:<xsl:value-of select="str:encode-uri(translate(marc:datafield[@tag=245]/marc:subfield[@code='a'], '/', ''), true())"/></xsl:attribute>
+                    </xsl:otherwise>
+                </xsl:choose>
+                <xsl:text>Show analytics</xsl:text>
+                </a>
+            </xsl:element>
+        </xsl:if>
 
         <!-- Volumes of sets and traced series -->
         <xsl:if test="$materialTypeCode='ST' or substring($controlField008,22,1)='m'">

opac/opac-detail.pl

@@ -62,6 +62,7 @@ use Koha::Patrons;
 use Koha::Plugins;
 use Koha::Ratings;
 use Koha::Reviews;
+use Koha::SearchEngine::Search;
 
 use Try::Tiny;
 
@@ -181,8 +182,23 @@ my $sysxml = $xslfile ? C4::XSLT::get_xslt_sysprefs() : undef;
 
 if ( $xslfile ) {
 
+    my $searcher = Koha::SearchEngine::Search->new(
+        { index => $Koha::SearchEngine::BIBLIOS_INDEX }
+    );
+    my $cleaned_title = $biblio->title;
+    $cleaned_title =~ tr|/||;
+    my $query =
+      ( C4::Context->preference('UseControlNumber') and $record->field('001') )
+      ? 'rcn:'. $record->field('001')->data . ' and (bib-level:a or bib-level:b)'
+      : "Host-item:$cleaned_title";
+    my ( $err, $result, $count ) = $searcher->simple_search_compat( $query, 0, 0 );
+
+    warn "Warning from simple_search_compat: $err"
+        if $err;
+
     my $variables = {
-        anonymous_session => ($borrowernumber) ? 0 : 1
+        anonymous_session   => ($borrowernumber) ? 0 : 1,
+        show_analytics_link => $count > 0 ? 1 : 0
     };
 
     my @plugin_responses = Koha::Plugins->call(