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  <pre class="prettyprint lang-js"><span id='Ext-data-Errors'>/**
</span> * @author Ed Spencer
 * @class Ext.data.Errors
 *
 * &lt;p&gt;Wraps a collection of validation error responses and provides convenient functions for
 * accessing and errors for specific fields.&lt;/p&gt;
 *
 * &lt;p&gt;Usually this class does not need to be instantiated directly - instances are instead created
 * automatically when {@link Ext.data.Model#validate validate} on a model instance:&lt;/p&gt;
 *
&lt;pre&gt;&lt;code&gt;
//validate some existing model instance - in this case it returned 2 failures messages
var errors = myModel.validate();

errors.isValid(); //false

errors.length; //2
errors.getByField('name');  // [{field: 'name',  message: 'must be present'}]
errors.getByField('title'); // [{field: 'title', message: 'is too short'}]
&lt;/code&gt;&lt;/pre&gt;
 */
Ext.define('Ext.data.Errors', {
    extend: 'Ext.util.MixedCollection',

<span id='Ext-data-Errors-method-isValid'>    /**
</span>     * Returns true if there are no errors in the collection
     * @return {Boolean}
     */
    isValid: function() {
        return this.length === 0;
    },

<span id='Ext-data-Errors-method-getByField'>    /**
</span>     * Returns all of the errors for the given field
     * @param {String} fieldName The field to get errors for
     * @return {Object[]} All errors for the given field
     */
    getByField: function(fieldName) {
        var errors = [],
            error, field, i;

        for (i = 0; i &lt; this.length; i++) {
            error = this.items[i];

            if (error.field == fieldName) {
                errors.push(error);
            }
        }

        return errors;
    }
});
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