Remember section/periode on attribution page

stages/static/js/attribution.js

@@ -7,9 +7,13 @@ function update_periods(section_id) {
         sel.append($("<option />").val(this.id).text(this.dates + ' ' + this.title));
       })
     }
-    update_students('');
-    update_corporations('');
-    update_trainings('');
+    if ($.cookie('periode') != 'undefined')
+        sel.val($.cookie('periode'));
+
+    var periode_val = sel.val();
+    update_students(periode_val);
+    update_corporations(periode_val);
+    update_trainings(periode_val);
   });
 }
 
@@ -108,6 +112,8 @@ $(document).ready(function() {
     // Update period list when section is modified
     $('#period_select').empty();
     update_periods($(this).val());
+    $.cookie('section', $(this).val(), { expires: 7 });
+    $.removeCookie('periode');
   });
 
   $('#period_select').change(function(ev) {
@@ -115,6 +121,7 @@ $(document).ready(function() {
     update_students($(this).val());
     update_corporations($(this).val());
     update_trainings($(this).val());
+    $.cookie('periode', $(this).val(), { expires: 7 });
   });
 
   $('#student_filter').change(function(ev) {
@@ -217,6 +224,8 @@ $(document).ready(function() {
     $('form#list_export').submit();
   });
 
+  if ($.cookie('section') != 'undefined')
+    $('#section_select').val($.cookie('section'));
   update_periods($('#section_select').val());
 });
 

stages/static/js/jquery.cookie.js

@@ -0,0 +1,95 @@
+/*!
+ * jQuery Cookie Plugin v1.3.1
+ * https://github.com/carhartl/jquery-cookie
+ *
+ * Copyright 2013 Klaus Hartl
+ * Released under the MIT license
+ */
+(function (factory) {
+	if (typeof define === 'function' && define.amd) {
+		// AMD. Register as anonymous module.
+		define(['jquery'], factory);
+	} else {
+		// Browser globals.
+		factory(jQuery);
+	}
+}(function ($) {
+
+	var pluses = /\+/g;
+
+	function raw(s) {
+		return s;
+	}
+
+	function decoded(s) {
+		return decodeURIComponent(s.replace(pluses, ' '));
+	}
+
+	function converted(s) {
+		if (s.indexOf('"') === 0) {
+			// This is a quoted cookie as according to RFC2068, unescape
+			s = s.slice(1, -1).replace(/\\"/g, '"').replace(/\\\\/g, '\\');
+		}
+		try {
+			return config.json ? JSON.parse(s) : s;
+		} catch(er) {}
+	}
+
+	var config = $.cookie = function (key, value, options) {
+
+		// write
+		if (value !== undefined) {
+			options = $.extend({}, config.defaults, options);
+
+			if (typeof options.expires === 'number') {
+				var days = options.expires, t = options.expires = new Date();
+				t.setDate(t.getDate() + days);
+			}
+
+			value = config.json ? JSON.stringify(value) : String(value);
+
+			return (document.cookie = [
+				config.raw ? key : encodeURIComponent(key),
+				'=',
+				config.raw ? value : encodeURIComponent(value),
+				options.expires ? '; expires=' + options.expires.toUTCString() : '', // use expires attribute, max-age is not supported by IE
+				options.path    ? '; path=' + options.path : '',
+				options.domain  ? '; domain=' + options.domain : '',
+				options.secure  ? '; secure' : ''
+			].join(''));
+		}
+
+		// read
+		var decode = config.raw ? raw : decoded;
+		var cookies = document.cookie.split('; ');
+		var result = key ? undefined : {};
+		for (var i = 0, l = cookies.length; i < l; i++) {
+			var parts = cookies[i].split('=');
+			var name = decode(parts.shift());
+			var cookie = decode(parts.join('='));
+
+			if (key && key === name) {
+				result = converted(cookie);
+				break;
+			}
+
+			if (!key) {
+				result[name] = converted(cookie);
+			}
+		}
+
+		return result;
+	};
+
+	config.defaults = {};
+
+	$.removeCookie = function (key, options) {
+		if ($.cookie(key) !== undefined) {
+			// Must not alter options, thus extending a fresh object...
+			$.cookie(key, '', $.extend({}, options, { expires: -1 }));
+			return true;
+		}
+		return false;
+	};
+
+}));