[added] refs!

README.md

@@ -185,6 +185,25 @@ Thrown on failed validations, with the following properties
  validation chain. When the `abortEarly` option is `false` this is where you can inspect each error thrown,
  alternatively `errors` will have all the of the messages from each inner error.
 
+#### `ref(String path, Object options)`
+
+Creates a reference to another sibling or sibling descendant field. Ref's are resolved
+at _run time_ and supported where specified. Ref's are evaluated in in the proper order so that
+the ref value is resolved before the field using the ref (be careful of circular dependencies!).
+
+```js
+var schema = object({
+  baz: ref('foo.bar'),
+  foo: object({
+    bar: string()
+  })
+  x: ref('$x')
+})
+
+inst.cast({ foo: { bar: 'boom' } }, { context: { x: 5 } })
+// { baz: 'boom',  x: 5, { foo: { bar: 'boom' } }, }
+```
+
 
 ### mixed
 
@@ -365,7 +384,7 @@ schema.isValid(42)       //=> false
 schema.isValid(new Date) //=> true
 ```
 
-#### `mixed.when(String key, Object options | Function func)`
+#### `mixed.when(String|Array<String> keys, Object options | Function func)`
 
 Adjust the schema based on a sibling or sibling children fields. You can provide an object
 literal where the key `is` is value or a matcher function, `then` provides the true schema and/or
@@ -374,11 +393,8 @@ literal where the key `is` is value or a matcher function, `then` provides the t
 `is` conditions are strictly compared (`===`) if you want to use a different form of equality you
 can provide a function like: `is: (value) => value == true`.
 
-Alternatively you can provide a function the returns a schema (called with the value of the key
-  and the current schema). `when` conditions are additive.
-
 Like joi you can also prefix properties with `$` to specify a property that is dependent
-on `context` passed in by `validate()` or `isValid`.
+on `context` passed in by `validate()` or `isValid`. `when` conditions are additive.
 
 ```javascript
 var inst = yup.object({
@@ -397,6 +413,42 @@ var inst = yup.object({
 inst.validate(value, { context: { other: 4 }})
 ```
 
+You can also specify more than one dependent key, in which case each value will be spread as an argument.
+
+```javascript
+var inst = yup.object({
+      isSpecial: yup.bool()
+      isBig: yup.bool(),
+      count: yup.number()
+        .when(['isBig', 'isSpecial'], {
+          is: true,  // alternatively: (isBig, isSpecial) => isBig && isSpecial
+          then:      yup.number().min(5),
+          otherwise: yup.number().min(0)
+        })
+    })
+
+inst.validate({
+  isBig: true,
+  isSpecial: true,
+  count: 10
+})
+```
+
+Alternatively you can provide a function the returns a schema
+(called with the value of the key and the current schema).
+
+```js
+var inst = yup.object({
+      isBig: yup.boolean(),
+      count: yup.number()
+        .when('isBig', (isBig, schema) => {
+          return isBig ? schema.min(5) : schema.min(0)
+        })
+    })
+
+inst.validate({ isBig: false, count: 4 })
+```
+
 
 #### `mixed.test(String name, String message, Function fn, [Bool callbackStyleAsync])`
 
@@ -539,11 +591,11 @@ schema.isValid('hello') //=> true
 The same as the `mixed()` schema required, except that empty strings are also considered 'missing' values.
 To allow empty strings but fail on `undefined` values use: `string().required().min(0)`
 
-#### `string.min(Number limit, [String message])`
+#### `string.min(Number|Ref limit, [String message])`
 
 Set an minimum length limit for the string value. The `${min}` interpolation can be used in the `message` argument
 
-#### `string.max(Number limit, [String message])`
+#### `string.max(Number|Ref limit, [String message])`
 
 Set an maximum length limit for the string value. The `${max}` interpolation can be used in the `message` argument
 
@@ -588,12 +640,12 @@ var schema = yup.number();
 schema.isValid(10) //=> true
 ```
 
-#### `number.min(Number limit, [String message])`
+#### `number.min(Number|Ref limit, [String message])`
 
 Set the minimum value allowed. The `${min}` interpolation can be used in the
 `message` argument.
 
-#### `number.max(Number limit, [String message])`
+#### `number.max(Number|Ref limit, [String message])`
 
 Set the maximum value allowed. The `${max}` interpolation can be used in the
 `message` argument.
@@ -636,11 +688,11 @@ var schema = yup.date();
 schema.isValid(new Date) //=> true
 ```
 
-#### `date.min(Date|String limit, [String message])`
+#### `date.min(Date|String|Ref limit, [String message])`
 
 Set the minimum date allowed.
 
-#### `date.max(Date|String limit, [String message])`
+#### `date.max(Date|String|Ref limit, [String message])`
 
 Set the maximum date allowed.
 
@@ -668,11 +720,11 @@ not validate its contents.
 The same as the `mixed()` schema required, except that empty arrays are also considered 'missing' values.
 To allow empty arrays but fail on `undefined` values use: `array().required().min(0)`
 
-#### `array.min(Number limit, [String message])`
+#### `array.min(Number|Ref limit, [String message])`
 
 Set an minimum length limit for the array. The `${min}` interpolation can be used in the `message` argument.
 
-#### `array.max(Number limit, [String message])`
+#### `array.max(Number|Ref limit, [String message])`
 
 Set an maximum length limit for the array. The `${max}` interpolation can be used in the `message` argument.
 

package.json

@@ -36,7 +36,6 @@
     "karma-jsdom-launcher": "^1.0.0",
     "karma-mocha": "^0.2.0",
     "karma-mocha-reporter": "^1.0.2",
-    "karma-phantomjs-launcher": "^0.2.0",
     "karma-sourcemap-loader": "^0.3.5",
     "karma-webpack": "^1.7.0",
     "mocha": "^1.21.4",

src/array.js

@@ -109,7 +109,9 @@ inherits(ArraySchema, MixedSchema, {
       name: 'min',
       exclusive: true,
       params: { min },
-      test: value => isAbsent(value) || value.length >= min
+      test(value) {
+        return isAbsent(value) || value.length >= this.resolve(min)
+      }
     })
   },
 
@@ -120,7 +122,9 @@ inherits(ArraySchema, MixedSchema, {
       name: 'max',
       exclusive: true,
       params: { max },
-      test: value => isAbsent(value) || value.length <= max
+      test(value) {
+        return isAbsent(value) || value.length <= this.resolve(max)
+      }
     })
   },
 

src/date.js

@@ -42,7 +42,9 @@ inherits(DateSchema, MixedSchema, {
       exclusive: true,
       message: msg || locale.min,
       params: { min: min },
-      test: value => isAbsent(value) || (value >= limit)
+      test(value) {
+        return isAbsent(value) || value >= this.resolve(limit)
+      }
     })
   },
 
@@ -57,7 +59,9 @@ inherits(DateSchema, MixedSchema, {
       exclusive: true,
       message: msg || locale.max,
       params: { max: max },
-      test: value => isAbsent(value) || (value <= limit)
+      test(value) {
+        return isAbsent(value) || value <= this.resolve(limit)
+      }
     })
   }
 

src/index.js

@@ -1,6 +1,7 @@
 'use strict';
 var mixed = require('./mixed')
-  , bool = require('./boolean');
+  , bool = require('./boolean')
+  , Ref = require('./util/reference');
 
 var isSchema = schema => schema && !!schema.__isYupSchema__;
 
@@ -17,6 +18,7 @@ module.exports = {
   reach: require('./util/reach'),
 
   ValidationError: require('./util/validation-error'),
+  ref: (key, options) => new Ref(key, options),
 
   isSchema,
 

src/mixed.js

@@ -2,13 +2,13 @@
 
 var Promise = require('promise/lib/es6-extensions')
   , Condition   = require('./util/condition')
-  , ValidationError = require('./util/validation-error')
   , locale = require('./locale.js').mixed
   , _ = require('./util/_')
   , isAbsent = require('./util/isAbsent')
   , cloneDeep = require('./util/clone')
   , createValidation = require('./util/createValidation')
-  , BadSet = require('./util/set');
+  , BadSet = require('./util/set')
+  , Ref = require('./util/reference');
 
 let notEmpty = value => !isAbsent(value);
 
@@ -25,6 +25,7 @@ function SchemaType(options = {}){
     return new SchemaType()
 
   this._deps        = []
+  this._conditions  = []
   this._options     = { abortEarly: true, recursive: true }
   this._exclusive   = Object.create(null)
   this._whitelist   = new BadSet()
@@ -100,9 +101,9 @@ SchemaType.prototype = {
     return !this._typeCheck || this._typeCheck(v)
   },
 
-  cast(_value, _opts) {
-    var schema = this._resolve((_opts || {}).context)
-    return schema._cast(_value, _opts)
+  cast(value, opts = {}) {
+    var schema = this._resolve(opts.context, opts.parent)
+    return schema._cast(value, opts)
   },
 
   _cast(_value) {
@@ -116,9 +117,9 @@ SchemaType.prototype = {
     return value
   },
 
-  _resolve(context, parent){
-    if (this._deps.length) {
-      return this._deps.reduce((schema, match) =>
+  _resolve(context, parent) {
+    if (this._conditions.length) {
+      return this._conditions.reduce((schema, match) =>
         match.resolve(schema, match.getValue(parent, context)), this)
     }
 
@@ -186,7 +187,7 @@ SchemaType.prototype = {
     },
 
   default(def) {
-    if( arguments.length === 0){
+    if (arguments.length === 0) {
       var dflt = _.has(this, '_default') ? this._default : this._defaultDefault
       return typeof dflt === 'function'
         ? dflt.call(this) : cloneDeep(dflt)
@@ -277,11 +278,16 @@ SchemaType.prototype = {
     return next
   },
 
-  when(key, options){
+  when(keys, options) {
     var next = this.clone()
-      , dep = new Condition(key, next._type, options);
+      , deps = [].concat(keys).map(key => new Ref(key));
 
-    next._deps.push(dep)
+    deps.forEach(dep => {
+      if (!dep.isContext)
+        next._deps.push(dep.key)
+    })
+
+    next._conditions.push(new Condition(deps, options))
 
     return next
   },
@@ -295,7 +301,9 @@ SchemaType.prototype = {
       test(value) {
         if (value !== undefined && !this.schema.isType(value))
           return this.createError({
-            params: { type: this.schema._type }
+            params: {
+              type: this.schema._type
+            }
           })
         return true
       }
@@ -320,7 +328,11 @@ SchemaType.prototype = {
       test(value) {
         let valids = this.schema._whitelist
         if (valids.length && !(valids.has(value) || isAbsent(value)))
-          return this.createError({ params: { values: valids.values().join(', ') }})
+          return this.createError({
+            params: {
+              values: valids.values().join(', ')
+            }
+          })
         return true
       }
     })
@@ -342,7 +354,11 @@ SchemaType.prototype = {
       test(value) {
         let invalids = this.schema._blacklist
         if (invalids.length && invalids.has(value))
-          return this.createError({ params: { values: invalids.values().join(', ') }})
+          return this.createError({
+            params: {
+              values: invalids.values().join(', ')
+            }
+          })
         return true
       }
     })

src/number.js

@@ -39,7 +39,9 @@ inherits(NumberSchema, SchemaObject, {
       exclusive: true,
       params: { min },
       message: msg || locale.min,
-      test: value => isAbsent(value) || value >= min
+      test(value) {
+        return isAbsent(value) || value >= this.resolve(min)
+      }
     })
   },
 
@@ -49,7 +51,9 @@ inherits(NumberSchema, SchemaObject, {
       exclusive: true,
       params: { max },
       message: msg || locale.max,
-      test: value => isAbsent(value) || value <= max
+      test(value) {
+        return isAbsent(value) || value <= this.resolve(max)
+      }
     })
   },