first commit

public/js/app.js

@@ -0,0 +1,73 @@
+$(document).ready(function(e) {
+    var authorOptions = {
+        placeholder: 'Authors',
+        tags: true,
+        ajax: {
+            url: '/authors/search',
+            dataType: 'json'
+            // Additional AJAX parameters go here; see the end of this chapter for the full code of this example
+        }
+    };
+
+    var locationOptions = {
+        placeholder: 'Location',
+        tags: true
+    };
+
+    $('#add-form .select2-author').select2(authorOptions);
+
+    $('#add-form .select2-location').select2(locationOptions);
+
+    $('#add-form').on('keyup', '.barcode_input', function (e) {
+        if (e.keyCode == 13) {
+            // Do something
+            e.preventDefault();
+
+            var $row = $(this).closest('.form-row');
+
+            $.get('/lookup/' + $(this).val(), function(res) {
+                $row.find('input[name*=name]').val(res.title);
+
+                var $authors = $row.find('.select2-author');
+
+                for (var i = 0; i < res.authors.length; i++) {
+                    $authors.append($('<option>', {value: res.authors[i], text: res.authors[i], selected: 'selected'}));
+                }
+
+                $authors.trigger('change');
+            }, 'json');
+
+            var count = emptyRowCount();
+
+            console.log('Empty rows:', count);
+
+            if (count < 1) {
+                var $template = $('#add-template'),
+                    $clone = $template.clone();
+
+                $clone.find('input[type=text]').val('');
+
+                $clone.removeClass('invisible').addClass('form-row');
+
+                $row.parent().append($clone);
+
+                $clone.find('.barcode_input').focus();
+                $clone.find('.select2-author').select2(authorOptions);
+            }
+        }
+    });
+});
+
+function emptyRowCount() {
+    var $barcodes = $('#add-form .barcode_input');
+
+    var count = 0;
+
+    $barcodes.each(function() {
+        if ($(this).val() == '') {
+            count++;
+        }
+    });
+
+    return count;
+}