replaced underscore with lodash, expanded querying capability to search through nested objects and arrays

Author: Ryan Crosser

package.json

@@ -14,12 +14,12 @@
     "errorhandler": "^1.2.0",
     "express": "^4.9.5",
     "got": "^1.2.2",
+    "lodash": "^3.9.1",
     "lowdb": "^0.7.1",
     "method-override": "^2.1.2",
     "morgan": "^1.3.1",
     "node-uuid": "^1.4.2",
     "pluralize": "^1.1.2",
-    "underscore": "^1.5.2",
     "underscore-db": "^0.8.0",
     "update-notifier": "^0.2.2",
     "yargs": "^1.3.1"

src/router.js

@@ -1,7 +1,7 @@
 var express = require('express')
 var methodOverride = require('method-override')
 var bodyParser = require('body-parser')
-var _ = require('underscore')
+var _ = require('lodash')
 var low = require('lowdb')
 var pluralize = require('pluralize')
 var utils = require('./utils')
@@ -78,7 +78,7 @@ module.exports = function (source) {
       array = db(req.params.resource).filter(function (obj) {
         for (var key in obj) {
           var value = obj[key]
-          if (_.isString(value) && value.toLowerCase().indexOf(q) !== -1) {
+          if(utils.deepQuery(value, q)){
             return true
           }
         }

src/utils.js

@@ -1,36 +1,36 @@
-var _ = require('underscore')
+var _ = require('lodash')
 var uuid = require('node-uuid')
 var pluralize = require('pluralize')
 
 // Turns string to native.
 // Example:
 //   'true' -> true
 //   '1' -> 1
-function toNative (value) {
-  if (typeof value === 'string') {
-    if (value === ''
-    || value.trim() !== value
-    || (value.length > 1 && value[0] === '0')) {
+function toNative(value) {
+  if(typeof value === 'string') {
+    if(value === ''
+       || value.trim() !== value
+       || (value.length > 1 && value[0] === '0')) {
       return value
-    } else if (value === 'true' || value === 'false') {
+    } else if(value === 'true' || value === 'false') {
       return value === 'true'
-    } else if (!isNaN(+value)) {
+    } else if(!isNaN(+value)) {
       return +value
     }
   }
   return value
 }
 
 // Return incremented id or uuid
-function createId (coll) {
-  if (_.isEmpty(coll)) {
+function createId(coll) {
+  if(_.isEmpty(coll)) {
     return 1
   } else {
-    var id = _.max(coll, function (doc) {
+    var id = _.max(coll, function(doc) {
       return doc.id
     }).id
 
-    if (_.isFinite(id)) {
+    if(_.isFinite(id)) {
       // Increment integer id
       return ++id
     } else {
@@ -42,19 +42,19 @@ function createId (coll) {
 
 // Returns document ids that have unsatisfied relations
 // Example: a comment that references a post that doesn't exist
-function getRemovable (db) {
+function getRemovable(db) {
   var removable = []
 
-  _(db).each(function (coll, collName) {
-    _(coll).each(function (doc) {
-      _(doc).each(function (value, key) {
-        if (/Id$/.test(key)) {
+  _(db).each(function(coll, collName) {
+    _(coll).each(function(doc) {
+      _(doc).each(function(value, key) {
+        if(/Id$/.test(key)) {
           var refName = pluralize.plural(key.slice(0, -2))
           // Test if table exists
-          if (db[refName]) {
+          if(db[refName]) {
             // Test if references is defined in table
             var ref = _.findWhere(db[refName], {id: value})
-            if (_.isUndefined(ref)) {
+            if(_.isUndefined(ref)) {
               removable.push({name: collName, id: doc.id})
             }
           }
@@ -66,8 +66,29 @@ function getRemovable (db) {
   return removable
 }
 
+function deepQuery(value, q) {
+  if(value) {
+    if(_.isArray(value)) {
+      for(var i = 0; i < value.length; i++) {
+        if(deepQuery(value[i], q)) {
+          return true
+        }
+      }
+    } else if(_.isPlainObject(value)) {
+      for(var k in value) {
+        if(deepQuery(value[k], q)) {
+          return true
+        }
+      }
+    } else if(value.toString().toLowerCase().indexOf(q) !== -1) {
+      return true;
+    }
+  }
+}
+
 module.exports = {
   toNative: toNative,
   createId: createId,
-  getRemovable: getRemovable
+  getRemovable: getRemovable,
+  deepQuery: deepQuery
 }