Magento - Module INSERT,UPDATE, DELETE, SELECT code - sql

Question

I created a module and want to used core write and read function to insert,update,delete or select database value with condition, how can I do it without using SQL?
Example:
$customer_id=123
Model=(referral/referral)
SELECT
$collection3 = Mage::getModel('referral/referral')->getCollection();
$collection3->addFieldToFilter('customer_id', array('eq' => $customer_id));
foreach($collection3 as $data1)
{
$ref_cust_id.= $data1->getData('referral_customer_id');
}
INSERT
$collection1= Mage::getModel('referral/referral');
$collection1->setData('customer_id',$customer_id)->save();
DELETE,UPDATE(with condition)=???

Answer 1

Suppose, I have a module named mynews.
Here follows the code to select, insert, update, and delete data from the news table.
INSERT DATA
$data contains array of data to be inserted. The key of the array should be the database table’s field name and the value should be the value to be inserted.
$data = array('title'=>'hello there','content'=>'how are you? i am fine over here.','status'=>1);
$model = Mage::getModel('mynews/mynews')->setData($data);
try {
$insertId = $model->save()->getId();
echo "Data successfully inserted. Insert ID: ".$insertId;
} catch (Exception $e){
echo $e->getMessage();
}
SELECT DATA
$item->getData() prints array of data from ‘news’ table.
$item->getTitle() prints the only the title field.
Similarly, to print content, we need to write $item->getContent().
$model = Mage::getModel('mynews/mynews');
$collection = $model->getCollection();
foreach($collection as $item){
print_r($item->getData());
print_r($item->getTitle());
}
UPDATE DATA
$id is the database table row id to be updated.
$data contains array of data to be updated. The key of the array should be the database table’s field name and the value should be the value to be updated.
// $id = $this->getRequest()->getParam('id');
$id = 2;
$data = array('title'=>'hello test','content'=>'test how are you?','status'=>0);
$model = Mage::getModel('mynews/mynews')->load($id)->addData($data);
try {
$model->setId($id)->save();
echo "Data updated successfully.";
} catch (Exception $e){
echo $e->getMessage();
}
DELETE DATA
$id is the database table row id to be deleted.
// $id = $this->getRequest()->getParam('id');
$id = 3;
$model = Mage::getModel('mynews/mynews');
try {
$model->setId($id)->delete();
echo "Data deleted successfully.";
} catch (Exception $e){
echo $e->getMessage();
}
In this way you can perform select, insert, update and delete in your custom module and in any magento code.
Source: http://blog.chapagain.com.np/magento-how-to-select-insert-update-and-delete-data/

Answer 2

UPDATE is basically the combination of SELECT and INSERT. You load a collection, iterate over them setting the values as needed, then call ->save() on each model.
DELETE is handled directly via the ->delete() functon of models. So either load a single model or iterate over a SELECTed collection of them and call ->delete()
(Not that due to the iteration, this is not the 'fastest' way of doing these operations on collections (because each one is going to generate a new query, instead of a single query that handles multiple deletes at once), but the performance is fine for either small data sets/SELECTs (less than 1k?) or for things that you don't do very often (like importing or updating prices ok 10k products once per day).

Answer 3

FOR UPDATE
$new=$this->getRequest()->getParams();
$id=$new['id'];
$name=$new['name'];
$con=Mage::getModel('plugin/plugin')->load($id);
$con->setData('name',$name)->save();
echo "Update Success";
FOR DELETE
$id = $this->getRequest()->getParam('id');
$model = Mage::getModel('plugin/plugin');
$model->setId($id)->delete();
echo "Data deleted successfully.";

Answer 4

You can use select query like this also. its very easy.
$salesInvoiceCollection_sql = "SELECT `entity_id` , `increment_id`,`order_id`
FROM `sales_flat_invoice`
WHERE `erp_invoice_id` = 0
ORDER BY `entity_id`
DESC limit 1000";
$salesInvoiceCollection = Mage::getSingleton('core/resource')->getConnection('core_read')->fetchAll($salesInvoiceCollection_sql);

Answer 5

If you want to delete with condition based on collection you can use addFieldToFilter, addAttributeToFilter
$model = Mage::getModel('mynews/mynews')->getCollection();
try {
$model->addAttributeToFilter('status', array('eq' => 1));
$model->walk('delete');
echo "Data deleted successfully.";
} catch (Exception $e){
echo $e->getMessage();
}