added course search method (#118)

* added course search method

* fixing conflicts

* updated schema

Author: amortenson

client/imports/course/methods.ts

@@ -0,0 +1,5 @@
+Meteor.methods({
+  'search_courses': function(text : String){
+     console.log("searching courses");
+   }
+});

collections/README.md

@@ -60,6 +60,8 @@ The following document describes the MongoDB Schema used by the TuxLab app:
   course_number: "15-131",
   course_name: "Great Practical Ideas for Computer Scientists",
   instructor_ids: ["948fhp23irjer9823r3rwef", "573de804b17eca6c452d9ff7"],
+  hidden: true, // Course is hidden from students.  Default is true.
+  disabled: false, // Enrollment for course is unavailable. Default is false.
 	course_description: {
 		content: "This is the course description.",
 		syllabus: "This is the course syllabus"

server/imports/course/methods.ts

@@ -0,0 +1,46 @@
+var async = require ('async');
+var future = require('fibers/future');
+
+Meteor.methods({
+  'search_courses': function(text : String, results_per_page : Number, page_no : Number) {
+
+    var courses = Collections.courses;
+
+    var search_pattern = new RegExp(text,"i");
+    if (results_per_page <= 0 || results_per_page > 200) results_per_page = 200;
+
+    var search_object =  
+      {$and : [
+        {"hidden" : false}, 
+        {$or : [
+          {"course_number" : search_pattern},
+          {$where: "this.course_number.replace(/[ .-]/g,'') == '"+text+"'"},
+          {"course_name" : search_pattern}
+        ]}
+      ]};
+  
+     var search_options = 
+       {limit : results_per_page,
+        skip : results_per_page * page_no,
+        fields : {
+          "course_number" : 1,
+          "course_name" : 1,
+          "instructor_ids" : 1,
+          "course_description" : 1}
+       };
+
+     var result = new future();
+
+     async.parallel(
+       {
+         "course_count" : function(callback) {callback(null, courses.find(search_object).count());},
+         "course_results" : function(callback) {callback(null, courses.find(search_object, search_options).fetch());}
+       },
+       function(err, results) {
+         if(err) result.throw(error);
+         result.return(results);
+     });
+
+     return result.wait();
+   }
+});

server/main.js

@@ -43,3 +43,4 @@ var NodeCache = require('node-cache');
 
 //import Meteor Methods
 import "./imports/lab/methods.ts"
+import "./imports/course/methods.ts"