WordPress Radio Boxes - selects only the last one - wordpress

Question

So I have a form as shown bellow. its a bit long. It contains three radio boxes. Every time I select one, doesn't matter which, and then hit submit, the last radio element shows up as selected instead of the one I clicked. I var dump the option (in this case aisis_core['display_rows']) and it will say the value of the radio element i selected instead of the current on selected.
So I select lists, it will show lists but the radio box selected is no_posts. Can some one tell me what I am doing wrong?
<form action="options.php" method="post">
<input type='hidden' name='option_page' value='aisis_options' /><input type="hidden"
name="action" value="update" /><input type="hidden" id="_wpnonce" name="_wpnonce"
value="f0385965c6" /><input type="hidden" name="_wp_http_referer" value=
"/WordPressDev/wp-admin/admin.php?page=aisis-core-options&settings-updated=true" />
<fieldset>
<div class="control-group">
<label class="radio"><input type="radio" id="rows" class="display" name=
"aisis_core[display_rows]" value="display_rows" checked="checked" /> Display
posts as rows. </label>
<div class="control-group">
<label class="radio"><input type="radio" class="display" name=
"aisis_core[display_rows]" value="list" checked="checked" /> Display posts a
list. </label>
</div>
<div class="control-group">
<label class="radio"><input type="radio" id="noDisplay" class="display" name=
"aisis_core[display_rows]" value="no_posts" checked="checked" /> Display no
posts.</label>
<div class="no_posts_section borderBottom">
<div class="well headLine">
<h1>Display No Rows</h1>
<p>If you choose to display no rows please give me a url of the page or
content you would like to display instead.</p>
<p class="text-info"><strong>Note:</strong> Formatting of said content is
up you. All we do is display it.</p>
</div>
<div class="control-group">
<div class="controls">
<input type="url" name="aisis_core[index_page_no_posts]" value=
"http://google.ca" placeholder="Url" />
</div>
</div>
</div>
<div class="control-group">
<div class="form-actions">
<input type="submit" class="btn btn-primary btn-large" />
</div>
</div>
</div>
</div>
</fieldset>
</form>
The function I am using from wordpress is:
checked('radio_box_value', isset($options['display_rows']), false)
Note: radio_box_value is replaced with what ever the value of the radio box is.
In this case only the last radio box has the "checked" in it's tag, when it should be which ever one I chose.
How are the elements being created?
The following is how I create the elements, they print out what you see above in the html for the radio buttons. These are done similar to, but not exactly, zend framework.
Its pretty straight forward what were doing, create the element, add the options to the element and then return it.
I hope this gives a better picture as to how these are being created.
protected function _radio_rows_element(){
$options = get_option('aisis_core');
echo $options['display_rows'];
$radio_element = array(
'name' => 'aisis_core[display_rows]',
'value' => 'display_rows',
'class' => 'display',
'id' => 'rows',
'checked' => checked('display_rows', isset($options['display_rows']) && $options['display_rows'] == 'display_rows', false),
'label' => ' Display posts as rows. <a href="#radioRows" data-toggle="modal">
<i class="icon-info-sign"> </i></a>'
);
$radio = new CoreTheme_Form_Elements_Radio($radio_element, $this->sub_section_rows_array());
return $radio;
}
protected function _radio_list_element(){
$options = get_option('aisis_core');
echo $options['display_rows'];
$radio_element = array(
'name' => 'aisis_core[display_rows]',
'value' => 'list',
'class' => 'display',
'checked' => checked('list', isset($options['display_rows']) && $options['display_rows'] == 'list', false),
'label' => ' Display posts a list. <a href="#radioLists" data-toggle="modal">
<i class="icon-info-sign"> </i></a>'
);
$radio = new CoreTheme_Form_Elements_Radio($radio_element);
return $radio;
}
protected function _radio_no_posts_element(){
$options = get_option('aisis_core');
echo $options['display_rows'];
$radio_element = array(
'name' => 'aisis_core[display_rows]',
'value' => 'no_posts',
'class' => 'display',
'id' => 'noDisplay',
'checked' => checked('no_posts', isset($options['display_rows']) && $options['display_rows'] == 'no_posts', false),
'label' => ' Display no posts.</a>'
);
$radio = new CoreTheme_Form_Elements_Radio($radio_element, $this->_sub_section_now_posts_array());
return $radio;
}

Answer 1

"checked" function seems to need the value as second parameter as is explained here http://codex.wordpress.org/Function_Reference/checked
Try like this:
protected function _radio_rows_element(){
$options = get_option('aisis_core');
echo $options['display_rows'];
$radio_element = array(
'name' => 'aisis_core[display_rows]',
'value' => 'display_rows',
'class' => 'display',
'id' => 'rows',
'checked' => checked('display_rows', (isset($options['display_rows']))?$options['display_rows']:'', false),
'label' => ' Display posts as rows. <a href="#radioRows" data-toggle="modal">
<i class="icon-info-sign"> </i></a>'
);
$radio = new CoreTheme_Form_Elements_Radio($radio_element, $this->sub_section_rows_array());
return $radio;
}
protected function _radio_list_element(){
$options = get_option('aisis_core');
echo $options['display_rows'];
$radio_element = array(
'name' => 'aisis_core[display_rows]',
'value' => 'list',
'class' => 'display',
'checked' => checked('list',(isset($options['display_rows']))?$options['display_rows']:'', false),
'label' => ' Display posts a list. <a href="#radioLists" data-toggle="modal">
<i class="icon-info-sign"> </i></a>'
);
$radio = new CoreTheme_Form_Elements_Radio($radio_element);
return $radio;
}
protected function _radio_no_posts_element(){
$options = get_option('aisis_core');
echo $options['display_rows'];
$radio_element = array(
'name' => 'aisis_core[display_rows]',
'value' => 'no_posts',
'class' => 'display',
'id' => 'noDisplay',
'checked' => checked('no_posts', (isset($options['display_rows']))?$options['display_rows']:'', false),
'label' => ' Display no posts.</a>'
);
$radio = new CoreTheme_Form_Elements_Radio($radio_element, $this->_sub_section_now_posts_array());
return $radio;
}
This will not give warning when isn't declared the variable $options['display_rows'] (that as you said is a possibility in your case) and will pass the value to the WordPress function to compare with.

Answer 2

You'll want to check the value in the checked condition, not you're just checking if any value is being selected, which is always true after a submit
change
checked('display_rows', isset($options['display_rows']), false)
to:
checked('display_rows', isset($options['display_rows']) && $options['display_rows'] == 'display_rows', false),
and for the list to:
checked('display_rows', isset($options['display_rows']) && $options['display_rows'] == 'list', false),

Answer 3

I did manage to write this:
public function set_element_checked($value, $option, $key){
$options = get_option($option);
if(isset($options[$key]) && $options[$key] == $value){
return 'checked';
}
}
which does exactly what I want. compare the element value to that of the $option[$key] and if they match return checked. can be called via:
'checked' => set_element_checked('display_rows', 'aisis_core', 'display_rows');