feat(parser): add string.toBoolean and string.toNumber options

Author: Hans Kristian Flaatten

README.md

@@ -76,6 +76,9 @@ var MongoQS = require('mongo-querystring');
 * `object` blacklist - blacklisted query params
 * `object` whitelist - whitelisted query params
 * `object` custom - custom query params
+* `object` string - string parsing
+  * `boolean` toBoolean - parse `"true"`, `"false"` string to booleans
+  * `boolean` toNumber - parse string integer and float values to numbers
 
 #### Bult in custom queries
 

index.js

@@ -10,6 +10,12 @@ module.exports = function MongoQS(opts) {
   this.whitelist = opts.whitelist || {};
   this.custom = opts.custom || {};
 
+  // String Value Parsing
+  opts.string = opts.string || {};
+  this.string = opts.string || {};
+  this.string.toBoolean = opts.string.toBoolean || true;
+  this.string.toNumber = opts.string.toNumber || true;
+
   this.keyRegex = opts.keyRegex || /^[a-zæøå0-9-_.]+$/i;
   this.arrRegex = opts.arrRegex || /^[a-zæøå0-9-_.]+(\[\])?$/i;
 
@@ -101,11 +107,11 @@ module.exports.prototype.customAfter = function(field) {
 };
 
 module.exports.prototype.parseString = function(string) {
-  if (string.toLowerCase() === 'true') {
+  if (this.string.toBoolean && string.toLowerCase() === 'true') {
     return true;
-  } else if (string.toLowerCase() === 'false') {
+  } else if (this.string.toBoolean && string.toLowerCase() === 'false') {
     return false;
-  } else if (!isNaN(string)) {
+  } else if (this.string.toNumber && !isNaN(string)) {
     return parseFloat(string, 10);
   } else {
     return string;

test.js

@@ -105,14 +105,29 @@ describe('parseString()', function() {
     assert.equal(qs.parseString('true'), true);
   });
 
+  it('returns string "true" when boolean parsing is disabled', function() {
+    qs.string.toBoolean = false;
+    assert.equal(qs.parseString('true'), 'true');
+  });
+
   it('returns boolean false for "flase" string', function() {
     assert.equal(qs.parseString('false'), false);
   });
 
+  it('returns string "false" when boolean parsing is disabled', function() {
+    qs.string.toBoolean = false;
+    assert.equal(qs.parseString('false'), 'false');
+  });
+
   it('returns number for parseable integer', function() {
     assert.equal(qs.parseString('100'), 100);
   });
 
+  it('returns string number when number parsing is disabled', function() {
+    qs.string.toNumber = false;
+    assert.equal(qs.parseString('100'), '100');
+  });
+
   it('returns number for zero padded parseable integer', function() {
     assert.equal(qs.parseString('000100'), 100);
   });