view - How can I get the value from method in my model? -


i have trouble displaying result method in model. method:

/**  * @return \yii\db\activequery  */ public function getschoolfee() {     return $this->hasone(sibuschool::classname(), ['school_fee_id' => 'school_fee_id']); }  /**  * @return \yii\db\activequery  */ public function getscholarshipfee() {     return $this->hasone(sibuscholarship::classname(),['scholarship_id'=>'scholarship_id']); }  /**  * @return \yii\db\activequery  */ public function getdiscountfee() {     $scholarship=  $this->getscholarshipfee();     $school=  $this->getschoolfee();     $data=  new sibupayment();     $data->total_payment=$school->amount-($scholarship->school_discount*$school->amount);     return $data; }

i want display result getdiscountfee method. use code on view:

    <?php echo $this->render('_search3', ['model' => $searchmodel]); ?> <?= gridview::widget([     'dataprovider' => $dataprovider,     // 'filtermodel' => $searchmodel,     'columns' => [         [             // 'filtermodel'=>'dataprovidersearch',             'attribute' => 'nama',             'value' => 'virtual.student_name'         ],         [             'attribute' => 'uang sekolah',             'value' => 'discountfee.total_payment'         ],         [             'attribute' => 'uang kantin',             'value' => 'canteenfee.total_amount'         ],         [             'attribute' => 'uang asrama',             'value' => 'dormitoryfee.amount'         ],         [             'attribute' => 'uang perpustakaan',             'value' => 'libraryfee.amount'         ],         [             'attribute' => 'uang les',             'value' => 'coursefee.amount'         ],         [             'attribute' => 'adm. bank',             'value' => 'administration'         ],         [             'attribute' => 'status',             'value' => function ($model) {                 if ($model->scholarship_id == 0) {                     return 'tanpa beasiswa';                 } else if ($model->scholarship_id == 1) {                     return 'beasiswa ekonomi kategori 100%';                 } else if ($model->scholarship_id == 2) {                     return 'beasiswa ekonomi kategori b 50%';                 } else if ($model->scholarship_id == 3) {                     return 'beasiswa prestasi kategori 50%';                 } else if ($model->scholarship_id == 4) {                     return 'beasiswa prestasi kategori 25%';                 } else {                     return 'beasiswa prestasi kategori 10%';                 }             },         ],         //'payment_class',         [             'attribute' => 'payment_class',             'value' => function ($model) {                 if ($model->payment_class == 0) {                     return 'tanpa golongan';                 } else if ($model->payment_class == 1) {                     return 'golongan 1';                 } else if ($model->payment_class == 2) {                     return 'golongan 2';                 } else if ($model->payment_class == 3) {                     return 'golongan 3';                 } else if ($model->payment_class == 4) {                     return 'golongan 4';                 }             },         ],         [             'attribute' => 'total',             'value' => 'total_payment'         ],         ['class' => 'yii\grid\actioncolumn',             'template' => '{update_r}{del}',             'buttons' => [                 'update_r' => function ($url, $model) {                     return html::a('<span class="glyphicon glyphicon-pencil"></span>', $url, [                                 'title' => yii::t('yii', 'view_r'),                     ]);                 },                         'del' => function ($url, $model) {                     return html::a('<span class="glyphicon glyphicon-trash"></span>', $url, [                                 'title' => yii::t('yii', 'del'),                     ]);                 },                     ]                 ],             ],         ]);         ?>

it works fine if display this:

            [             'attribute' => 'uang sekolah',             'value' => 'scholarshipfee.school_discount'         ],

and this:

            [             'attribute' => 'uang sekolah',             'value' => 'schoolfee.amount'         ],

can me? if need feel free ask.

    [         'attribute' => 'uang sekolah',         'value' => 'discountfee.total_payment'     ],

discountfee function of model, never work until put there model too. can 

    [         'attribute' => 'uang sekolah',         'value' => function ($model) {                 return $model->getdiscountfee()->total_payment;             }         },     ],

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