added full text search

Author: Alex Young

Jakefile.js

@@ -0,0 +1,12 @@
+
+desc('Saves all documents to generate keywords');
+task('index', [], function() {
+  app = require('./app');
+
+  app.Document.find({}, function(err, documents) {
+    documents.forEach(function(d) {
+      console.log(d._id);
+      d.save();
+    });
+  });
+});

app.js

@@ -207,7 +207,7 @@ app.get('/documents/titles.json', loadUser, function(req, res) {
                 [], { sort: ['title', 'descending'] },
                 function(err, documents) {
     res.send(documents.map(function(d) {
-      return { title: d.title, id: d.id };
+      return { title: d.title, _id: d._id };
     }));
   });
 });
@@ -380,6 +380,21 @@ app.del('/sessions', loadUser, function(req, res) {
   res.redirect('/sessions/new');
 });
 
+// Search
+app.post('/search.:format?', loadUser, function(req, res) {
+  Document.find({ user_id: req.currentUser.id, keywords: req.body.s ? req.body.s : null },
+                [], { sort: ['title', 'descending'] },
+                function(err, documents) {
+    switch (req.params.format) {
+      case 'json':
+        res.send(documents.map(function(d) {
+          return { title: d.title, _id: d._id };
+        }));
+      break;
+    }
+  });
+});
+
 if (!module.parent) {
   app.listen(3000);
   console.log('Express server listening on port %d, environment: %s', app.address().port, app.settings.env)

models.js

@@ -3,6 +3,15 @@ var crypto = require('crypto'),
     User,
     LoginToken;
 
+function extractKeywords(text) {
+  if (!text) return [];
+
+  return text.
+    split(/\s+/).
+    filter(function(v) { return v.length > 2; }).
+    filter(function(v, i, a) { return a.lastIndexOf(v) === i; });
+}
+
 function defineModels(mongoose, fn) {
   var Schema = mongoose.Schema,
       ObjectId = Schema.ObjectId;
@@ -14,6 +23,7 @@ function defineModels(mongoose, fn) {
     'title': { type: String, index: true },
     'data': String,
     'tags': [String],
+    'keywords': [String],
     'user_id': ObjectId
   });
 
@@ -22,6 +32,11 @@ function defineModels(mongoose, fn) {
       return this._id.toHexString();
     });
 
+  Document.pre('save', function(next) {
+    this.keywords = extractKeywords(this.data);
+    next();
+  });
+
   /**
     * Model: User
     */

public/javascripts/application.js

@@ -121,7 +121,7 @@
 
   $('#create-document').click(function(e) {
     $.post('/documents.json', { d: { data: '', title: 'Untitled Document' } }, function(new_doc) {
-      $('#document-list').append('<li><a id="document-title-' + new_doc._id + '" href="/documents/' + new_doc._id + '">' + new_doc.title + '</a></li>');
+      showDocuments([new_doc]);
       $('#document-title-' + new_doc._id).click();
     });
     e.preventDefault();
@@ -152,6 +152,53 @@
   }, 5000);
   $('.flash').click(hideFlashMessages);
 
+  // Search bar
+  function showDocuments(results) {
+    for (var i = 0; i < results.length; i++) {
+      $('#document-list').append('<li><a id="document-title-' + results[i]._id + '" href="/documents/' + results[i]._id + '">' + results[i].title + '</a></li>');
+    }
+  }
+
+  function search(value) {
+    $.post('/search.json', { s: value }, function(results) {
+      $('#document-list').html('');
+      $('#document-list').append('<li><a id="show-all" href="#">Show All</a></li>');
+
+      if (results.length === 0) {
+        alert('No results found');
+      } else {
+        showDocuments(results);
+      }
+    }, 'json');
+  }
+
+  $('input[name="s"]').focus(function() {
+    var element = $(this);
+    if (element.val() === 'Search')
+      element.val('');
+  });
+
+  $('input[name="s"]').blur(function() {
+    var element = $(this);
+    if (element.val().length === 0)
+      element.val('Search');
+  });
+
+  $('form.search').submit(function(e) {
+    search($('input[name="s"]').val());
+    e.preventDefault();
+  });
+
+  $('#show-all').live('click', function(e) {
+    $.get('/documents/titles.json', function(results) {
+      $('#document-list').html('');
+      showDocuments(results);
+      if (results.length > 0)
+        $('#document-title-' + results[0]._id).click();
+    });
+    e.preventDefault();
+  });
+
   $(window).resize(resize);
   $(window).focus(resize);
   resize();

public/stylesheets/style.css

@@ -246,3 +246,9 @@ form.users input[type=submit] {
   margin-left: 140px;
   clear: both;
 }
+form.search {
+  margin-right: 10px;
+}
+#show-all {
+  color: #999;
+}

public/stylesheets/style.styl

@@ -260,3 +260,8 @@ form.users input[type=submit]
   margin-left 140px
   clear both
 
+form.search
+  margin-right 10px
+
+#show-all
+  color medium-grey

views/layout.jade

@@ -17,6 +17,9 @@ html
           - if (typeof currentUser !== 'undefined')
             li.right
               a#logout(href='/sessions') Log Out
+            li.right
+              form.search(action='/search')
+                input(name='s', value='Search')
       !{flashMessages}
       != body
     script(type='text/javascript', src='/javascripts/application.js')