getCollection() return false in magento

Question

class Mage_Customer_Model_Designs file

function _construct()
{
  $this->_init('customer_designs/customer');
}

class Mage_Customer_Model_Resource_Designs file

protected function _construct()
{
  $this->_init('customer_designs/customer','d_id');
}

class Mage_Customer_Model_Resource_Designs_Collection file

protected function _construct()
{
  $this->_init('customer_designs/customer');
}

class Mage_Customer_Block_Account_Dashboard_Designs file

function get_my_designs()
{
 return $collection = Mage::getModel('customer/designs')->getCollection();
}

Table Name: customer_designs, Table Prefix: djc

These are all my codes. My Blog file returns bool(false). I just replaced existing code. I don't know how these codes are all codes working. Kindly help me to get out of this issue.

Answer 1

Vivek Aasaithambi,I did not understand why you have doing this type of code.

Issue 1: Why you have write your class at Core class it too wrong process.If you have create a new module then you should create custom module with database. see at http://www.amitbera.com/create-an-magento-extension-with-custom-database-table/

Issue 2:

If you have write this type code.then there are lot of issues.

model construct is to wrong

class Mage_Customer_Model_Designs file

function _construct()
{
  $this->_init('customer/designs');
}

class Mage_Customer_Model_Resource_Designs file

protected function _construct()
{
  $this->_init('customer/designs','d_id');
}

class Mage_Customer_Model_Resource_Designs_Collection file

protected function _construct()
{
  $this->_init('customer/designs');
}

I Guess that there must be lot of issue in your code

I suggest you please use issue 1 as good solution.