PHP question_has_capability_on函数代码示例

 protected function display_content($question, $rowclasses)
 {
     if (!question_has_capability_on($question, 'use')) {
         return;
     }
     $this->print_icon('t/add', $this->stradd, $this->qbank->add_to_rtq_url($question->id));
 }

 protected function display_content($question, $rowclasses)
 {
     global $PAGE;
     if (question_has_capability_on($question, 'use')) {
         echo $PAGE->get_renderer('core_question')->question_preview_link($question->id, $this->qbank->get_most_specific_context(), false);
     }
 }

 function print_question(&$question, &$state, $number, $cmoptions, $options)
 {
     global $CFG;
     $isfinished = question_state_is_graded($state->last_graded) || $state->event == QUESTION_EVENTCLOSE;
     if (!empty($cmoptions->id)) {
         $cm = get_coursemodule_from_instance('quiz', $cmoptions->id);
         $cmorcourseid = '&cmid=' . $cm->id;
     } else {
         if (!empty($cmoptions->course)) {
             $cmorcourseid = '&courseid=' . $cmoptions->course;
         } else {
             error('Need to provide courseid or cmid to print_question.');
         }
     }
     // For editing teachers print a link to an editing popup window
     $editlink = '';
     if (question_has_capability_on($question, 'edit')) {
         $stredit = get_string('edit');
         $linktext = '<img src="' . $CFG->pixpath . '/t/edit.gif" alt="' . $stredit . '" />';
         $editlink = link_to_popup_window('/question/question.php?id=' . $question->id . $cmorcourseid, $stredit, $linktext, 450, 550, $stredit, '', true);
     }
     $questiontext = $this->format_text($question->questiontext, $question->questiontextformat, $cmoptions);
     $image = get_question_image($question);
     $generalfeedback = '';
     if ($isfinished && $options->generalfeedback) {
         $generalfeedback = $this->format_text($question->generalfeedback, $question->questiontextformat, $cmoptions);
     }
     include "{$CFG->dirroot}/question/type/description/question.html";
 }

/**
 * Called via pluginfile.php -> question_pluginfile to serve files belonging to
 * a question in a question_attempt when that attempt is a preview.
 *
 * @param object $course course settings object
 * @param object $context context object
 * @param string $component the name of the component we are serving files for.
 * @param string $filearea the name of the file area.
 * @param array $args the remaining bits of the file path.
 * @param bool $forcedownload whether the user must be forced to download the file.
 * @return bool false if file not found, does not return if found - justsend the file
 */
function question_preview_question_pluginfile($course, $context, $component, $filearea, $attemptid, $questionid, $args, $forcedownload)
{
    global $USER, $SESSION, $DB, $CFG;
    require_once $CFG->dirroot . '/mod/quiz/locallib.php';
    if (!($question = $DB->get_record('question', array('id' => $questionid)))) {
        return send_file_not_found();
    }
    if (!question_has_capability_on($question, 'use', $question->category)) {
        send_file_not_found();
    }
    if (!isset($SESSION->quizpreview->states) || $SESSION->quizpreview->questionid != $questionid) {
        send_file_not_found();
    }
    $states = end($SESSION->quizpreview->states);
    if (!array_key_exists($question->id, $states)) {
        send_file_not_found();
    }
    $state = $states[$question->id];
    // Build fake cmoptions
    $quiz = new cmoptions();
    $quiz->id = 0;
    $quiz->review = get_config('quiz', 'review');
    if (empty($course->id)) {
        $quiz->course = SITEID;
    } else {
        $quiz->course = $course->id;
    }
    $quiz->decimalpoints = get_config('quiz', 'decimalpoints');
    $questions[$question->id] = $question;
    get_question_options($questions);
    // Build fake attempt
    $timenow = time();
    $attempt = new stdClass();
    $attempt->quiz = $quiz->id;
    $attempt->userid = $USER->id;
    $attempt->attempt = 0;
    $attempt->sumgrades = 0;
    $attempt->timestart = $timenow;
    $attempt->timefinish = 0;
    $attempt->timemodified = $timenow;
    $attempt->uniqueid = 0;
    $attempt->id = 0;
    $attempt->layout = $question->id;
    $options = quiz_get_renderoptions($quiz, $attempt, $context, $state);
    $options->noeditlink = true;
    // XXX: mulitichoice type needs quiz id to get maxgrade
    $options->quizid = 0;
    if (!question_check_file_access($question, $state, $options, $context->id, $component, $filearea, $args, $forcedownload)) {
        send_file_not_found();
    }
    $fs = get_file_storage();
    $relativepath = implode('/', $args);
    $fullpath = "/{$context->id}/{$component}/{$filearea}/{$relativepath}";
    if (!($file = $fs->get_file_by_hash(sha1($fullpath))) or $file->is_directory()) {
        send_file_not_found();
    }
    send_stored_file($file, 0, 0, $forcedownload);
}

 protected function display_content($question, $rowclasses)
 {
     // To copy a question, you need permission to add a question in the same
     // category as the existing question, and ability to access the details of
     // the question being copied.
     if (question_has_capability_on($question, 'add') && (question_has_capability_on($question, 'edit') || question_has_capability_on($question, 'view'))) {
         $this->print_icon('t/copy', $this->strcopy, $this->qbank->copy_question_url($question->id));
     }
 }

 protected function display_content($question, $rowclasses)
 {
     if (question_has_capability_on($question, 'edit')) {
         $this->print_icon('t/edit', $this->stredit, $this->qbank->edit_question_url($question->id));
     } else {
         if (question_has_capability_on($question, 'view')) {
             $this->print_icon('i/info', $this->strview, $this->qbank->edit_question_url($question->id));
         }
     }
 }

 function drop_questions($a)
 {
     global $DB;
     // First sanity check the existance of the context. there may be deleted contexts and some question wreck inside.
     $contextid = $DB->get_field('question_categories', 'contextid', array('id' => $a->category));
     if (!$DB->record_exists('context', array('id' => $contextid))) {
         return false;
     }
     return question_has_capability_on($a->id, 'use');
 }

 protected function display_content($question, $rowclasses)
 {
     if (!question_has_capability_on($question, 'use')) {
         return;
     }
     $disabled = false;
     if ($this->qbank->offlinequiz_contains($question->id)) {
         $disabled = true;
     }
     $this->print_icon('t/add', $this->stradd, $this->qbank->add_to_offlinequiz_url($question->id), $disabled);
 }

 protected function display_content($question, $rowclasses)
 {
     if (question_has_capability_on($question, 'edit')) {
         if ($question->hidden) {
             $url = new \moodle_url($this->qbank->base_url(), array('unhide' => $question->id, 'sesskey' => sesskey()));
             $this->print_icon('t/restore', $this->strrestore, $url);
         } else {
             $url = new \moodle_url($this->qbank->base_url(), array('deleteselected' => $question->id, 'q' . $question->id => 1, 'sesskey' => sesskey()));
             $this->print_icon('t/delete', $this->strdelete, $url);
         }
     }
 }

$categorycontext = get_context_instance_by_id($category->contextid);
$addpermission = has_capability('moodle/question:add', $categorycontext);
if ($id) {
    $canview = question_has_capability_on($question, 'view');
    if ($movecontext) {
        $question->formoptions->canedit = false;
        $question->formoptions->canmove = question_has_capability_on($question, 'move') && $contexts->have_cap('moodle/question:add');
        $question->formoptions->cansaveasnew = false;
        $question->formoptions->repeatelements = false;
        $question->formoptions->movecontext = true;
        $formeditable = true;
        question_require_capability_on($question, 'view');
    } else {
        $question->formoptions->canedit = question_has_capability_on($question, 'edit');
        $question->formoptions->canmove = question_has_capability_on($question, 'move') && $addpermission;
        $question->formoptions->cansaveasnew = ($canview || question_has_capability_on($question, 'edit')) && $addpermission;
        $question->formoptions->repeatelements = $question->formoptions->canedit || $question->formoptions->cansaveasnew;
        $formeditable = $question->formoptions->canedit || $question->formoptions->cansaveasnew || $question->formoptions->canmove;
        $question->formoptions->movecontext = false;
        if (!$formeditable) {
            question_require_capability_on($question, 'view');
        }
    }
} else {
    // creating a new question
    require_capability('moodle/question:add', $categorycontext);
    $formeditable = true;
    $question->formoptions->repeatelements = true;
    $question->formoptions->movecontext = false;
}
// Validate the question type.

 /**
  * Get a link to an edit icon for this question, if the current user is allowed
  * to edit it.
  *
  * @param object $question the question object.
  * @param object $cmoptions the options from the module. If $cmoptions->thispageurl is set
  *      then the link will be to edit the question in this browser window, then return to
  *      $cmoptions->thispageurl. Otherwise the link will be to edit in a popup. $cmoptions->cmid should also be set.
  * @return string the HTML of the link, or nothing it the currenty user is not allowed to edit.
  */
 function get_question_edit_link($question, $cmoptions, $options)
 {
     global $CFG;
     /// Is this user allowed to edit this question?
     if (!empty($options->noeditlink) || !question_has_capability_on($question, 'edit')) {
         return '';
     }
     /// Work out the right URL.
     $linkurl = '/question/question.php?id=' . $question->id;
     if (!empty($cmoptions->cmid)) {
         $linkurl .= '&cmid=' . $cmoptions->cmid;
     } else {
         if (!empty($cmoptions->course)) {
             $linkurl .= '&courseid=' . $cmoptions->course;
         } else {
             error('Need to provide courseid or cmid to get_question_edit_link.');
         }
     }
     /// Work out the contents of the link.
     $stredit = get_string('edit');
     $linktext = '<img src="' . $CFG->pixpath . '/t/edit.gif" alt="' . $stredit . '" />';
     if (!empty($cmoptions->thispageurl)) {
         /// The module allow editing in the same window, print an ordinary link.
         return '<a href="' . $CFG->wwwroot . $linkurl . '&amp;returnurl=' . urlencode($cmoptions->thispageurl) . '" title="' . $stredit . '">' . $linktext . '</a>';
     } else {
         /// We have to edit in a pop-up.
         return link_to_popup_window($linkurl . '&amp;inpopup=1', 'editquestion', $linktext, false, false, $stredit, '', true);
     }
 }

/**
 * Require capability on question.
 */
function question_require_capability_on($question, $cap)
{
    if (!question_has_capability_on($question, $cap)) {
        print_error('nopermissions', '', '', $cap);
    }
    return true;
}

//.........这里部分代码省略.........
            return;
        }
    }
    print_paging_bar($totalnumber, $page, $perpage, $pageurl, 'qpage');
    echo question_sort_options($pageurl, $sortorder);
    echo '<form method="post" action="edit.php">';
    echo '<fieldset class="invisiblefieldset" style="display: block;">';
    echo '<input type="hidden" name="sesskey" value="' . $USER->sesskey . '" />';
    echo $pageurl->hidden_params_out();
    echo '<table id="categoryquestions" style="width: 100%"><tr>';
    echo "<th style=\"white-space:nowrap;\" class=\"header\" scope=\"col\">{$straction}</th>";
    echo "<th style=\"white-space:nowrap; text-align: left;\" class=\"header\" scope=\"col\">{$strquestionname}</th>\n    <th style=\"white-space:nowrap; text-align: right;\" class=\"header\" scope=\"col\">{$strtype}</th>";
    echo "</tr>\n";
    foreach ($questions as $question) {
        $nameclass = '';
        $textclass = '';
        if ($question->hidden) {
            $nameclass = 'dimmed_text';
            $textclass = 'dimmed_text';
        }
        if ($showquestiontext) {
            $nameclass .= ' header';
        }
        if ($question->id == $lastchangedid) {
            $nameclass = 'highlight';
        }
        if ($nameclass) {
            $nameclass = 'class="' . $nameclass . '"';
        }
        if ($textclass) {
            $textclass = 'class="' . $textclass . '"';
        }
        echo "<tr>\n<td style=\"white-space:nowrap;\" {$nameclass}>\n";
        $canuseq = question_has_capability_on($question, 'use', $question->category);
        if (function_exists('module_specific_actions')) {
            echo module_specific_actions($pageurl, $question->id, $cm->id, $canuseq);
        }
        // preview
        if ($canuseq) {
            $quizorcourseid = $quizid ? '&amp;quizid=' . $quizid : '&amp;courseid=' . $COURSE->id;
            link_to_popup_window('/question/preview.php?id=' . $question->id . $quizorcourseid, 'questionpreview', "<img src=\"{$CFG->pixpath}/t/preview.gif\" class=\"iconsmall\" alt=\"{$strpreview}\" />", 0, 0, $strpreview, QUESTION_PREVIEW_POPUP_OPTIONS);
        }
        // edit, hide, delete question, using question capabilities, not quiz capabilieies
        if (question_has_capability_on($question, 'edit', $question->category) || question_has_capability_on($question, 'move', $question->category)) {
            echo "<a title=\"{$stredit}\" href=\"" . $questionurl->out(false, array('id' => $question->id)) . "\"><img\n                    src=\"{$CFG->pixpath}/t/edit.gif\" alt=\"{$stredit}\" /></a>&nbsp;";
        } elseif (question_has_capability_on($question, 'view', $question->category)) {
            echo "<a title=\"{$strview}\" href=\"" . $questionurl->out(false, array('id' => $question->id)) . "\"><img\n                    src=\"{$CFG->pixpath}/i/info.gif\" alt=\"{$strview}\" /></a>&nbsp;";
        }
        if (question_has_capability_on($question, 'move', $question->category) && question_has_capability_on($question, 'view', $question->category)) {
            echo "<a title=\"{$strmove}\" href=\"" . $questionurl->out(false, array('id' => $question->id, 'movecontext' => 1)) . "\"><img\n                    src=\"{$CFG->pixpath}/t/move.gif\" alt=\"{$strmove}\" /></a>&nbsp;";
        }
        if (question_has_capability_on($question, 'edit', $question->category)) {
            // hide-feature
            if ($question->hidden) {
                echo "<a title=\"{$strrestore}\" href=\"edit.php?" . $pageurl->get_query_string() . "&amp;unhide={$question->id}&amp;sesskey={$USER->sesskey}\"><img\n                        src=\"{$CFG->pixpath}/t/restore.gif\" alt=\"{$strrestore}\" /></a>";
            } else {
                echo "<a title=\"{$strdelete}\" href=\"edit.php?" . $pageurl->get_query_string() . "&amp;deleteselected={$question->id}&amp;q{$question->id}=1\"><img\n                        src=\"{$CFG->pixpath}/t/delete.gif\" alt=\"{$strdelete}\" /></a>";
            }
        }
        if ($caneditall || $canmoveall || $canuseall) {
            echo "&nbsp;<input title=\"{$strselect}\" type=\"checkbox\" name=\"q{$question->id}\" value=\"1\" />";
        }
        echo "</td>\n";
        echo "<td {$nameclass}>" . format_string($question->name) . "</td>\n";
        echo "<td {$nameclass} style='text-align: right'>\n";
        print_question_icon($question);

/**
 * @param object $quiz the quiz settings
 * @param object $question the question
 * @param bool $label if true, show the preview question label after the icon
 * @return the HTML for a preview question icon.
 */
function quiz_question_preview_button($quiz, $question, $label = false) {
    global $CFG, $OUTPUT;
    if (!question_has_capability_on($question, 'use', $question->category)) {
        return '';
    }

    $url = quiz_question_preview_url($quiz, $question);

    // Do we want a label?
    $strpreviewlabel = '';
    if ($label) {
        $strpreviewlabel = get_string('preview', 'quiz');
    }

    // Build the icon.
    $strpreviewquestion = get_string('previewquestion', 'quiz');
    $image = $OUTPUT->pix_icon('t/preview', $strpreviewquestion);

    $action = new popup_action('click', $url, 'questionpreview',
            question_preview_popup_params());

    return $OUTPUT->action_link($url, $image, $action, array('title' => $strpreviewquestion));
}

//.........这里部分代码省略.........
                }
                if (!$quiz->shufflequestions) {
                    // Print and increment question number
                    $questioncountstring = '';
                    if ($questioncount > 999 || $reordertool && $questioncount > 99) {
                        $questioncountstring = "{$reordercheckboxlabel}<small>{$questioncount}</small>" . $reordercheckboxlabelclose . $reordercheckbox;
                    } else {
                        $questioncountstring = $reordercheckboxlabel . $questioncount . $reordercheckboxlabelclose . $reordercheckbox;
                    }
                    echo $questioncountstring;
                    $qno += $question->length;
                } else {
                    echo "{$reordercheckboxlabel} ? {$reordercheckboxlabelclose}" . " {$reordercheckbox}";
                }
                ?>
        </div>
        <div class="content">
            <div class="questioncontrols">
                <?php 
                if ($count != 0) {
                    if (!$hasattempts) {
                        $upbuttonclass = '';
                        if ($count >= $lastindex - 1) {
                            $upbuttonclass = 'upwithoutdown';
                        }
                        echo "<a title=\"{$strmoveup}\" href=\"" . $pageurl->out_action(array('up' => $question->id)) . "\"><img\n                             src=\"{$CFG->pixpath}/t/up.gif\" class=\"iconsmall\n                            {$upbuttonclass}\" alt=\"{$strmoveup}\" /></a>";
                    }
                }
                if ($count < $lastindex - 1) {
                    if (!$hasattempts) {
                        echo "<a title=\"{$strmovedown}\" href=\"" . $pageurl->out_action(array('down' => $question->id)) . "\"><img\n                            src=\"{$CFG->pixpath}/t/down.gif\" class=\"iconsmall\"" . " alt=\"{$strmovedown}\" /></a>";
                    }
                }
                if ($allowdelete && question_has_capability_on($question, 'use', $question->category)) {
                    // remove from quiz, not question delete.
                    if (!$hasattempts) {
                        echo "<a title=\"{$strremove}\" href=\"" . $pageurl->out_action(array('remove' => $question->id)) . "\">\n                            <img src=\"{$CFG->pixpath}/t/delete.gif\" " . "class=\"iconsmall\" alt=\"{$strremove}\" /></a>";
                    }
                }
                ?>
            </div><?php 
                if ($question->qtype != 'description' && !$reordertool) {
                    ?>
<div class="points">
<form method="post" action="edit.php"><div>
    <fieldset class="invisiblefieldset" style="display: block;">
    <label for="<?php 
                    echo "inputq{$question->id}";
                    ?>
"><?php 
                    echo $strgrade;
                    ?>
</label>:<br />
    <input type="hidden" name="sesskey" value="<?php 
                    echo sesskey();
                    ?>
" />
    <?php 
                    echo $pageurl->hidden_params_out();
                    ?>
    <input type="hidden" name="savechanges" value="save" />
        <?php 
                    echo '<input type="text" name="g' . $question->id . '" id="inputq' . $question->id . '" size="' . ($quiz->decimalpoints + 2) . '" value="' . (0 + $quiz->grades[$qnum]) . '" tabindex="' . ($lastindex + $qno) . '" />';
                    ?>
        <input type="submit" class="pointssubmitbutton" value="<?php 
                    echo $strsave;