Add ability to check for a particular value

chilts · Jul 3, 2014 · 6bf1cff · 6bf1cff
1 parent 5446f42
commit 6bf1cff
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Showing 3 changed files with 27 additions and 0 deletions.
diff --git a/README.md b/README.md
@@ -14,12 +14,14 @@ var schema = {
     url      : sound().isString().isUrl(), // optional
     isAdmin  : sound().isString().required().toBoolean().isBoolean(),
     dob      : sound().isDate(), // accepts 'yyyy-mm-dd'
+    agree    : sound().isString().toBoolean().is(true), // make sure they tick T&C's
 };
 
 var params = {
     username : 'chilts',
     password : 'abcdefgh',
     email : 'me@example.com',
+    agree : 'on', // will convert to true
 };
 
 var out = sound.validate(params, schema);

diff --git a/sound.js b/sound.js
@@ -97,6 +97,15 @@ Constraint.prototype.isDate = function(msg) {
     return this;
 };
 
+Constraint.prototype.is = function(value, msg) {
+    this.rules.push({
+        type : 'is',
+        value : value,
+        msg  : msg
+    });
+    return this;
+};
+
 Constraint.prototype.lt = function(value, msg) {
     this.rules.push({
         type  : 'lt',
@@ -358,6 +367,14 @@ var validateParam = function(name, value, constraint) {
                 };
             }
         }
+        else if ( r.type === 'is' ) {
+            if ( value !== r.value ) {
+                return {
+                    ok  : false,
+                    err : r.msg || name + ' should be ' + r.value,
+                };
+            }
+        }
         else if ( r.type === 'gt' ) {
             if ( value <= r.value ) {
                 return {

diff --git a/test/basic.js b/test/basic.js
@@ -83,6 +83,10 @@ var tests = [
             isAdmin  : sound().isBoolean().name('Is Admin').required(),
             isHuman  : sound().isBoolean().name('Is Human').required(),
             date     : sound().isDate().name('Date').required(),
+            agree    : sound().is(true).name('Agree'),
+            hasHair  : sound().is(false).name('Have Hair?'),
+            age      : sound().is(21).name('Is 21?'),
+            yes      : sound().is('yes'),
         },
         params : {
             username : 'andy',
@@ -92,6 +96,10 @@ var tests = [
             isAdmin  : false,
             isHuman  : true,
             date     : new Date(),
+            agree    : true,
+            hasHair  : false,
+            age      : 21,
+            yes      : 'yes',
         },
         test : function(t, err, res) {
             t.ok(_.isObject(err), "is an object");