MDL-52573 report_grader: only check cap of installed plugins

Previously we were linking to gradebook plugins regardless of whether
they were installed. This should be fixed properly in MDL-52678.

diff --git a/grade/report/grader/lib.php b/grade/report/grader/lib.php
index aba460f..5156001 100644 (file)
--- a/grade/report/grader/lib.php
+++ b/grade/report/grader/lib.php
@@ -589,9 +589,16 @@ class grade_report_grader extends grade_report {
         $rows = array();
 
         $showuserimage = $this->get_pref('showuserimage');
-        $canseeuserreport = has_capability('gradereport/'.$CFG->grade_profilereport.':view', $this->context);
-        $canseesingleview = has_all_capabilities(array('gradereport/singleview:view', 'moodle/grade:viewall',
+        // FIXME: MDL-52678 This get_capability_info is hacky and we should have an API for inserting grade row links instead.
+        $canseeuserreport = false;
+        $canseesingleview = false;
+        if (get_capability_info('gradereport/'.$CFG->grade_profilereport.':view')) {
+            $canseeuserreport = has_capability('gradereport/'.$CFG->grade_profilereport.':view', $this->context);
+        }
+        if (get_capability_info('gradereport/singleview:view')) {
+            $canseesingleview = has_all_capabilities(array('gradereport/singleview:view', 'moodle/grade:viewall',
             'moodle/grade:edit'), $this->context);
+        }
         $hasuserreportcell = $canseeuserreport || $canseesingleview;
 
         $strfeedback  = $this->get_lang_string("feedback");
@@ -838,17 +845,21 @@ class grade_report_grader extends grade_report {
                     }
 
                     $singleview = '';
-                    if (has_all_capabilities(array('gradereport/singleview:view', 'moodle/grade:viewall',
-                        'moodle/grade:edit'), $this->context)) {
-
-                        $url = new moodle_url('/grade/report/singleview/index.php', array(
-                            'id' => $this->course->id,
-                            'item' => 'grade',
-                            'itemid' => $element['object']->id));
-                        $singleview = $OUTPUT->action_icon(
-                            $url,
-                            new pix_icon('t/editstring', get_string('singleview', 'grades', $element['object']->get_name()))
-                        );
+
+                    // FIXME: MDL-52678 This is extremely hacky we should have an API for inserting grade column links.
+                    if (get_capability_info('gradereport/singleview:view')) {
+                        if (has_all_capabilities(array('gradereport/singleview:view', 'moodle/grade:viewall',
+                            'moodle/grade:edit'), $this->context)) {
+
+                            $url = new moodle_url('/grade/report/singleview/index.php', array(
+                                'id' => $this->course->id,
+                                'item' => 'grade',
+                                'itemid' => $element['object']->id));
+                            $singleview = $OUTPUT->action_icon(
+                                $url,
+                                new pix_icon('t/editstring', get_string('singleview', 'grades', $element['object']->get_name()))
+                            );
+                        }
                     }
 
                     $itemcell->colspan = $colspan;