title: Redux form defaultValue
body: <p>How to set <code>defaultValue</code> to input component? </p>
  
  <pre><code>&lt;Field name={`${prize}.rank`} defaultValue={index} component={Input} type='text'/&gt;
  </code></pre>
  
  <p>I tried like above but my fields are empty. I'm trying to create <code>fieldArray</code> (dynamic forms):</p>
  
  <pre><code>{fields.map((prize, index) =&gt;
      &lt;div key={index} className="fieldArray-container relative border-bottom" style={{paddingTop: 35}}&gt;
          &lt;small className="fieldArray-title marginBottom20"&gt;Prize {index + 1}
              &lt;button
                  type="button"
                  title="Remove prize"
                  className="btn btn-link absolute-link right"
                  onClick={() =&gt; fields.remove(index)}&gt;Delete&lt;/button&gt;
          &lt;/small&gt;
          &lt;div className="row"&gt;
              &lt;div className="col-xs-12 col-sm-6"&gt;
                  &lt;Field name={`${prize}.rank`}  defaultValue={index} component={Input} type='text'/&gt;
                  &lt;Field name={`${prize}.prizeId`} defaultValue={index} component={Input} type='text'/&gt;
                  &lt;Field
                      name={`${prize}.name`}
                      type="text"
                      component={Input}
                      label='Prize Name'/&gt;
              &lt;/div&gt;
              &lt;div className="col-xs-12 col-sm-6"&gt;
                  &lt;Field
                      name={`${prize}.url`}
                      type="text"
                      component={Input}
                      label="Prize URL"/&gt;
              &lt;/div&gt;
              &lt;div className="col-xs-12"&gt;
                  &lt;Field
                      name={`${prize}.description`}
                      type="text"
                      component={Input}
                      label="Prize Description" /&gt;
              &lt;/div&gt;
          &lt;/div&gt;
      &lt;/div&gt;
  )}
  </code></pre>