How can I set default value in text box in magento admin custom form

Question

I have create a field English video and save to data in database but I can't set value in edit time

I have used this code for set value.

$fieldset->addField('title', 'text', array(
            'label'     => Mage::helper('ultimate_option')->__('English Video'),
            'id'  => 'option_english',
            'name'      => 'option_english',
            'after_element_html' => '<table id="modulename_tbl_data_English" cellspacing="0">
                                <button id="English" class="add" type="button" title="Add"><span><span><span>Add</span></span></span></button>
                                </table>',
            'value'  => 'hello !!'         
        ));     

but getting this blank result

How can I set value for English text box at edit time.

Answer 1

I assume you have after the form definitions something like this:

$form->setData($data);

or

$form->addData($data);

If you do, add this line above it:

if (!isset($data['option_english'])) {
    $data['option_english'] = 'Your default value here';
}

Answer 2

somewhere in the code you might have called

$form->setValues($somethingHere);

Replace that line with:

$form->addValues(array('option_english'=> 'default_Value'));

Answer 3

For anyone looking and are working on 1.9 and have the below

if($model){
    $form->setValues($model->getData());
}

You can do the following without having to edit your existing data, just above that code place:

if($model->getData('fieldName') == ""){
    $model->setData('fieldName', "yourValue");
}

Of course you can check isset and such but here is the basic version of setting defaults.