errors

  • function
can.Map.validations.prototype.errors  

observe.errors(attrs, newVal)

Parameters

  1. attrs {Array<String>}Optional

    An optional list of attributes to get errors for:

    task.errors(['dueDate','name']);

    Or it can take a single attr name like:

    task.errors('dueDate')

  2. newVal {Object}Optional

    An optional new value to test setting on the observe. If newVal is provided, it returns the errors on the observe if newVal was set.

Returns

{Object<String,Array<String>>}

an object of attributeName : [errors] like:

task.errors() // -> {dueDate: ["can't be empty"]}

or null if there are no errors.

Runs the validations on this observe. You can also pass it an array of attributes to run only those attributes. It returns nothing if there are no errors, or an object of errors by attribute.

To use validations, it's suggested you use the observe/validations plugin.

Task = can.Map.extend({
    init : function(){
        this.validatePresenceOf("dueDate")
    }
},{});

var task = new Task(),
     errors = task.errors()

errors.dueDate[0] //-> "can't be empty"