Grid does not display in custom magento module - php

Question

I am trying to create a custom module in magento admin. I have reached the point where a new link has been added to the menu and by clicking on it, I can navigate to the index action of the controller of the module. But here I cannot see the grid, only the header text and the button which has been added in the block construct appear.
my namespace is: Mmnamespace
my module is: Mmmodule
i also created a table named mmmodule_event using the following commands
CREATE TABLE mmmodule_event (
`event_id` INTEGER AUTO_INCREMENT PRIMARY KEY,
`name` VARCHAR(255),
`start` DATETIME,
`end` DATETIME,
`created_at` DATETIME,
`modified_at` DATETIME
);
there are currently two items in the table that i populated it with using magento's admin
I can see that since this block extends the Mage_Adminhtml_Block_Widget_Grid_Container class, it will by itself add the grid block inside this module as its child.
my config setup xml files are as follows:
my config.xml
<?xml version="1.0"?>
<!DOCTYPE config>
<!--
/**
* app/code/local/Mmnamespace/Mmmodule/etc/config.xml
*
*
*
*
* #author Omatsola Isaac Sobotie <tsola2002#yahoo.co.uk>
* #category Mmnamspace
* #package Mmmodule
*
*/
-->
<config>
<modules>
<Mmnamespace_Mmmodule>
<version>0.0.0</version>
</Mmnamespace_Mmmodule>
</modules>
<global>
<!-- this code tells magento to use resources -->
<models>
<mmmodule>
<class>Mmnamespace_Mmmodule_Model</class>
<resourceModel>mmmodule_resource</resourceModel>
</mmmodule>
<mmmodule_resource>
<class>Mmnamespace_Mmmodule_Model_Resource</class>
<entities>
<event>
<table>mmmodule_event</table>
</event>
<event_registrant>
<table>mmmodule_event_registrant</table>
</event_registrant>
</entities>
</mmmodule_resource>
</models>
<blocks>
<mmmodule>
<class>Mmnamespace_Mmmodule_Block</class>
</mmmodule>
</blocks>
<helpers>
<mmmodule>
<class>Mmnamespace_Mmmodule_Helper</class>
</mmmodule>
</helpers>
<!-- initializing a predispatch observer gets fired anytime a controller is about to render an action -->
<events>
<controller_action_predispatch>
<observers>
<mmmodule_observer>
<class>mmmodule/observer</class>
<method>controllerActionPredispatch</method>
</mmmodule_observer>
</observers>
</controller_action_predispatch>
</events>
</global>
<!-- routing front page menu to appropriate controller -->
<admin>
<routers>
<adminhtml>
<args>
<modules>
<mmmodule before="Mage_Adminhtml">Mmnamespace_Mmmodule_Adminhtml</mmmodule>
</modules>
</args>
</adminhtml>
</routers>
</admin>
<!--used to route urls with module name to module-->
<frontend>
<routers>
<mmmodule>
<use>standard</use>
<args>
<frontName>mmmodule</frontName>
<module>Mmnamespace_Mmmodule</module>
</args>
</mmmodule>
</routers>
<layout>
<updates>
<mmmodule>
<file>mmmodule.xml</file>
</mmmodule>
</updates>
</layout>
</frontend>
</config>
my adminhtml.xml
<?xml version="1.0"?>
<!DOCTYPE config>
<!--
/**
* app/code/local/Mmnamespace/Mmmodule/etc/adminhtml.xml
*
*
* #category Mmnamespace
* #package Mmmodule
*/
-->
<!-- this code will process urls with that front name -->
<config>
<menu>
<mmmodule translate="title" module="mmmodule">
<title>Events</title>
<sort_order>1000</sort_order>
<action>adminhtml/event</action>
</mmmodule>
</menu>
</config>
my system.xml
<?xml version="1.0"?>
<!DOCTYPE config>
<!--
/**
* app/code/local/Mmnamespace/Mmmodule/etc/system.xml
*
*
* #category Mmnamespace
* #package Mmmodule
*/
-->
<!-- this code adds a fieldset to an existing general section -->
<config>
<sections>
<general translate="label">
<groups>
<mmmodule translate="label">
<label>Mmmodule Options</label>
<sort_order>0</sort_order>
<show_in_default>1</show_in_default>
<show_in_website>1</show_in_website>
<show_in_store>1</show_in_store>
<fields>
<some_field translate="label">
<label>Mmmodule Field</label>
<frontend_type>text</frontend_type> <!-- More frontend types can be found in the lib/Varien/Data/Form/Element folder -->
<show_in_default>1</show_in_default>
<show_in_website>1</show_in_website>
<show_in_store>1</show_in_store>
</some_field>
</fields>
</mmmodule>
</groups>
</general>
</sections>
</config>
my Mmnamespace_Mmmodule.xml
<?xml version="1.0"?>
<!DOCTYPE config>
<!--
/**
* app/etc/modules/Mmnamespace_Mmmodule.xml
*
*
*
*
* #author Omatsola Isaac Sobotie <tsola2002#yahoo.co.uk>
* #category Mmnamespace
* #package Mmodule
*
*/
-->
<config>
<modules>
<Mmnamespace_Mmmodule>
<active>true</active>
<codePool>local</codePool>
<depends />
</Mmnamespace_Mmmodule>>
</modules>
</config>
my EventController.php
<?php
/**
*
* Package: magentocore
* Filename: MmmoduleController.php
* Author: solidstunna101
* Date: 25/02/14
* Time: 18:40
* * app/code/local/Mmnamespace/controllers/Adminhtml/EventController.php
*/
class Mmnamespace_Mmmodule_Adminhtml_EventController extends Mage_Adminhtml_Controller_Action
{
//this function adds block content to main layout
public function indexAction()
{
$this->loadLayout();
$this->_setActiveMenu('mmmodule/events');
/*$this->_addContent(
$this->getLayout()->createBlock('mmmodule/adminhtml_event_edit')
);*/
$this->_addContent(
$this->getLayout()->createBlock('mmmodule/adminhtml_event')
);
return $this->renderLayout();
}
public function saveAction()
{
//gathering form field parameters from the url
$eventId = $this->getRequest()->getParam('event_id');
$eventModel = Mage::getModel('mmmodule/event')->load($eventId);
//save event to database
if ( $data = $this->getRequest()->getPost() ) {
try {
$eventModel->addData($data)->save();
Mage::getSingleton('adminhtml/session')->addSuccess(
$this->__("Your event has been saved!")
);
} catch ( Exception $e ) {
Mage::getSingleton('adminhtml/session')->addError($e->getMessage());
}
}
$this->_redirect('*/*/index');
}
}
my event.php block
<?php
/**
*
* Package: magentocore
* Filename: Event.php
* Author: solidstunna101
* Date: 27/02/14
* Time: 08:14
* Location: app/code/local/Mmnamespace/Mmmodule/Block/Adminhtml/Event.php
*/
class Mmnamespace_Mmmodule_Block_Adminhtml_Event extends Mage_Adminhtml_Block_Widget_Grid_Container {
public function __construct(){
$this->_blockGroup = 'mmmodule';
$this->_controller = 'adminhtml_event';
$this->_headerText = Mage::helper('mmmodule')->__('Events');
$this->_addButtonLabel = Mage::helper('mmmodule')->__('Add New Event');
parent::__construct();
}
}
my Grid.php
<?php
/**
*
* Package: magentocore
* Filename: Grid.php
* Author: solidstunna101
* Date: 27/02/14
* Time: 08:27
* Location: app/code/local/Mmnamespace/Mmmodule/Block/Adminhtml/Event/Grid.php
*/
class Mmnamespace_Mmmodule_Block_Adminhtml_Event_Grid extends Mage_Adminhtml_Block_Widget_Grid {
protected function _prepareColumns()
{
$this->addColumn('name', array(
'type' => 'text',
'index' => 'name',
'header' => $this->__('Name')
));
$this->addColumn('start', array(
'type' => 'date',
'index' => 'start',
'header' => $this->__('Start Date')
));
$this->addColumn('end', array(
'type' => 'date',
'index' => 'end',
'header' => $this->__('End Date')
));
return $this;
}
public function _prepareCollection()
{
$collection = Mage::getModel('mmmodule/event')->getCollection();
$this->setCollection($collection);
return parent::_prepareCollection();
}
}
my resource event.php
<?php
/**
*
* Package: magentocore
* Filename: Event.php
* Author: solidstunna101
* Date: 26/02/14
* Time: 08:30
* Location: app/code/local/Mmnamespace/Mmmodule/Model/Event.php
*/
class Mmnamespace_Mmmodule_Model_Event extends Mage_Core_Model_Abstract
{
//this function initializes resources to be used
public function _construct()
{
$this->_init('mmmodule/event');
}
}
my resource event abstract.php
<?php
/**
*
* Package: magentocore
* Filename: Event.php
* Author: solidstunna101
* Date: 26/02/14
* Time: 08:33
*Location: app/code/local/Mmnamespace/Mmmodule/Model/Resource/Event.php
*/
class Mmnamespace_Mmmodule_Model_Resource_Event extends Mage_Core_Model_Resource_Db_Abstract
{
//initializes primary key in the table
public function _construct()
{
$this->_init('mmmodule/event', 'event_id');
}
}
my block edit.php
<?php
/**
*
* Package: magentocore
* Filename: Edit.php
* Author: solidstunna101
* Date: 26/02/14
* Time: 14:31
* Location: app/code/local/Mmnamespace/Mmmodule/Block/Adminhtml/Event/Edit.php
*/
class Mmnamespace_Mmmodule_Block_Adminhtml_Event_Edit extends Mage_Adminhtml_Block_Widget_Form_Container
{
public function __construct()
{
//creating components required to render the form
$this->_objectId = 'event_id';
$this->_blockGroup = 'mmmodule';
$this->_controller = 'adminhtml_event';
parent::__construct();
}
/**
* Get edit form container header text
*
* #return string
*/
public function getHeaderText()
{
return Mage::helper('mmmodule')->__('New Event');
}
public function getSaveUrl()
{
return $this->getUrl('*/event/save');
}
}
form.php
<?php
/**
*
* Package: magentocore
* Filename: Form.php
* Author: solidstunna101
* Date: 26/02/14
* Time: 14:34
* Location: app/code/local/Mmnamespace/Mmmodule/Block/Adminhtml/Event/Edit/Form.php
*/
class Mmnamespace_Mmmodule_Block_Adminhtml_Event_Edit_Form extends Mage_Adminhtml_Block_Widget_Form
{
//this function will override the prepare form function add data forms/fieldset
public function _prepareForm()
{
$form = new Varien_Data_Form(
array('id' => 'edit_form', 'action' => $this->getData('action'), 'method' => 'post')
);
$fieldset = $form->addFieldset('base_fieldset', array('legend' => Mage::helper('mmmodule')->__('General Information'), 'class' => 'fieldset-wide'));
$fieldset->addField('name', 'text', array(
'name' => 'name',
'label' => Mage::helper('mmmodule')->__('Event Name'),
'title' => Mage::helper('mmmodule')->__('Event Name'),
'required' => true
));
$dateFormatIso = Mage::app()->getLocale()->getDateFormat(Mage_Core_Model_Locale::FORMAT_TYPE_SHORT);
$fieldset->addField('start', 'date', array(
'name' => 'start',
'format' => $dateFormatIso,
'image' => $this->getSkinUrl('images/grid-cal.gif'),
'label' => Mage::helper('mmmodule')->__('Start Date'),
'title' => Mage::helper('mmmodule')->__('Start Date'),
'required' => true
));
$fieldset->addField('end', 'date', array(
'name' => 'end',
'format' => $dateFormatIso,
'image' => $this->getSkinUrl('images/grid-cal.gif'),
'label' => Mage::helper('mmmodule')->__('End Date'),
'title' => Mage::helper('mmmodule')->__('End Date'),
'required' => true
));
$form->setUseContainer(true);
$this->setForm($form);
}
}
P.S my edit form displays but my grid does not display, is there anything i'm missing here

Answer 1

Please follow to create front end and admin modules as per the below link.
It will work clearly without making any issues in the admin grid.
Custom Module Creation Link

Answer 2

try to call parent::_prepareColumns in Grid.php _prepareColumns. Your grid might not be triggered to render without calling the parent.
p.s. in my admin modules I actually return parent::_prepareColumns instead of $this.

Answer 3

In Mmnamespace_Mmmodule_Adminhtml_EventController change return $this->renderLayout(); to $this->renderLayout();
protected function indexAction()
{
$this->loadLayout()
->_setActiveMenu('mmmodule/items')
->_addBreadcrumb(Mage::helper('adminhtml')->__('Items Manager'), Mage::helper('adminhtml')->__('Item Manager'));
$this->_addContent($this->getLayout()->createBlock('mmmodule/adminhtml_event'));
$this->renderLayout(); //<-- not return $this->renderLayout();
}
Take a look # Custom_module_with_custom_database_table because your code seem to have other minor issue