Handle string/hash based ids

package.json

@@ -17,6 +17,7 @@
     "lowdb": "^0.5.1",
     "method-override": "^2.1.2",
     "morgan": "^1.3.1",
+    "node-uuid": "^1.4.2",
     "serve-static": "^1.6.1",
     "superagent": "^0.15.7",
     "underscore": "^1.5.2",

src/utils.js

@@ -1,4 +1,5 @@
 var _ = require('underscore')
+var uuid = require('node-uuid')
 var _inflections = require('underscore.inflections')
 _.mixin(_inflections)
 
@@ -19,14 +20,22 @@ function toNative(value) {
   return value
 }
 
-// Creates incremental id.
+// Return incremented id or uuid
 function createId(coll) {
   if (_.isEmpty(coll)) {
     return 1
   } else {
-    return _.max(coll, function(doc) {
+    var id = _.max(coll, function(doc) {
       return doc.id
-    }).id + 1
+    }).id
+
+    if (_.isFinite(id)) {
+      // Increment integer id
+      return ++id
+    } else {
+      // Generate string id
+      return uuid()
+    }
   }
 }
 

test/index.js

@@ -29,6 +29,10 @@ describe('Server', function() {
       {id: 5, published: false, postId: 2},
     ]
 
+    db.refs = [
+      {id: 'abcd-1234', url: 'http://example.com', postId: 1}
+    ]
+
     server = jsonServer(db)
   })
 
@@ -166,7 +170,8 @@ describe('Server', function() {
 
 
   describe('POST /:resource', function() {
-    it('should respond with json and create a resource', function(done) {
+    it('should respond with json, create a resource and increment id',
+      function(done) {
         request(server)
           .post('/posts')
           .send({body: 'foo', booleanValue: 'true', integerValue: '1'})
@@ -179,6 +184,20 @@ describe('Server', function() {
             done()
           })
       })
+
+    it('should respond with json, create a resource and generate string id',
+      function(done) {
+        request(server)
+          .post('/refs')
+          .send({url: 'http://foo.com', postId: '1'})
+          .expect('Content-Type', /json/)
+          .expect(200)
+          .end(function(err, res){
+            if (err) return done(err)
+            assert.equal(db.refs.length, 2)
+            done()
+          })
+      })
   })
 
   describe('PUT /:resource/:id', function() {

test/utils.js

@@ -24,7 +24,7 @@ describe('utils', function() {
         { name: 'comments', id: 3 }
       ]
 
-      assert.deepEqual(expected, utils.getRemovable(db))
+      assert.deepEqual(utils.getRemovable(db), expected)
 
     })
   })