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124 lines
4.0 KiB
PHP
124 lines
4.0 KiB
PHP
<?PHP // $Id$
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// Allows the admin to create, delete and rename course categories
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require_once("../config.php");
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require_once("lib.php");
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if (!isadmin()) {
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error("Only administrators can use this course!");
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}
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if (!$site = get_site()) {
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error("Site isn't defined!");
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}
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/// Print headings
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$stradministration = get_string("administration");
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$strcategories = get_string("categories");
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$strcategory = get_string("category");
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$strcourses = get_string("courses");
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$stredit = get_string("edit");
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$strdelete = get_string("delete");
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$straction = get_string("action");
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$stradd = get_string("add");
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print_header("$site->shortname: $strcategories", "$site->fullname",
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"<A HREF=\"$CFG->wwwroot/admin/\">$stradministration</A> -> $strcategories");
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print_heading($strcategories);
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/// If data submitted, then process and store.
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if ($form = data_submitted()) {
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$categories = array();
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// Peel out all the data from variable names.
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foreach ($form as $key => $val) {
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if ($key == "new" and $val != "") {
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$cat->name = $val;
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if (!insert_record("course_categories", $cat)) {
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error("Could not insert the new category '$val'");
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} else {
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notify(get_string("categoryadded", "", $val));
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}
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} else {
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$cat->id = substr($key,1);
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$cat->name = $val;
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if (!update_record("course_categories", $cat)) {
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error("Could not update the category '$val'");
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}
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}
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}
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}
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/// Get the existing categories
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if (!$categories = get_categories()) {
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// Try and make one
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$cat->name = get_string("miscellaneous");
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if ($cat->id = insert_record("course_categories", $cat)) {
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$categories[$cat->id] = $cat;
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} else {
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error("Serious error: Could not create a default category!");
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}
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}
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/// Delete category if the user wants to delete it
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if (isset($delete)) {
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if (delete_records("course_categories", "id", $delete)) {
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notify(get_string("categorydeleted", "", $categories[$delete]->name));
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unset($categories[$delete]);
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} else {
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error("An error occurred while trying to delete a category");
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}
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}
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/// Find lowest ID category - this is the default category
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$default = 99999;
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foreach ($categories as $category) {
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if ($category->id < $default) {
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$default = $category->id;
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}
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}
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/// Find any orphan courses that don't yet have a valid category and set to default
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if ($courses = get_courses()) {
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foreach ($courses as $course) {
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if (!isset( $categories[$course->category] )) {
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set_field("course", "category", $default, "id", $course->id);
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}
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}
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}
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/// Print the table of all categories
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$table->head = array ($strcategory, $strcourses, $straction);
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$table->align = array ("LEFT", "CENTER", "CENTER");
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$table->size = array ("80", "50", "50");
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$table->width = 100;
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echo "<FORM ACTION=categories.php METHOD=post>";
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foreach ($categories as $category) {
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$count = count_records("course", "category", $category->id);
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if ($category->id == $default) {
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$delete = ""; // Can't delete default category
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} else {
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$delete = "<A HREF=\"categories.php?delete=$category->id\">$strdelete</A>";
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}
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$table->data[] = array ("<INPUT TYPE=text NAME=\"c$category->id\" VALUE=\"$category->name\" SIZE=30>",
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"<A HREF=\"index.php?category=$category->id\">$count</A>", $delete);
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}
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$table->data[] = array ("<INPUT TYPE=text NAME=\"new\" VALUE=\"\" SIZE=30>", "", "$stradd");
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print_table($table);
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echo "<CENTER><BR><INPUT TYPE=submit VALUE=\"".get_string("savechanges")."\"> ";
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echo "</CENTER>";
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echo "</FORM>";
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print_footer();
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?>
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