cakephp set values to model before saving form data -


i'm learning cakephp. want submit form data database , before saving, wish modify few fields. here tried:

public function addproduct() {      $this->layout = false;     $this->render ( false );      $this->loadmodel ( 'product' );      $this->product->create();      $conditions = array('product.category_id' => $this->request->data["categoryproduct"],                         'product.company_id' => $this->request->data["companyproduct"],                         'product.name' => $this->request->data["name"]                     );      $product = $this->product->find ( 'first', array ('conditions' => $conditions ) );      if ($product)         echo "duplicate";     else{          $discount = $this->request->data["discount"];          if($discount>0){             $cost = $this->request->data["cost"];             $this->product->costforyou = intval($cost - $cost * $discount / 100);         }         else             $this->product->costforyou = 0;          $this->product->category_id = $this->request->data["categoryproduct"];         $this->product->company_id = $this->request->data["companyproduct"];         $this->product->create_date = date('y-m-d h:i:s');         $this->product->status = "active";          if ($this->product->save($this->request->data)) {             echo "product added";         } else {             echo "error in adding product";         }     } }

but fields i'm setting manually not getting data. tried have @ cakephp books couldn't find there.

i worked out. here new code:

public function addproduct() {      $this->layout = false;     $this->render ( false );      $this->loadmodel ( 'product' );      $this->product->create();      $conditions = array('product.category_id' => $this->request->data["categoryproduct"],                         'product.company_id' => $this->request->data["companyproduct"],                         'product.name' => $this->request->data["name"]                     );      $product = $this->product->find ( 'first', array ('conditions' => $conditions ) );      if ($product)         echo "duplicate";     else{          $discount = $this->request->data["discount"];         $costforyou = 0;          if($discount>0){             $cost = $this->request->data["cost"];             $costforyou = intval($cost - $cost * $discount / 100);         }          $this->request->data["category_id"] = $this->request->data["categoryproduct"];         $this->request->data["company_id"] = $this->request->data["companyproduct"];         $this->request->data["costforyou"] = $costforyou;         $this->request->data["createdate"] = date('y-m-d h:i:s');         $this->request->data["status"] = "active";          if ($this->product->save($this->request->data)) {             echo "product added";         } else {             echo "error in adding product";         }     } }

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