在模型中使用列名称的访问器会出现“Undefined App \ ModelName :: $ column_name”错误

Question

I have used an accessor to get the modified value for a column, and I haven't used $appends for that because the accesor name is according to column name. It gives me error of undefined property App\ModelName::$colimn_name

// In controller
ModelOther::select('column_name')where(condition)->get();

//In ModelName model
public function getColumnNameAttribute()
{
    return "Hello ".$this->column_name;
}

Answer 1

Using an accessor for the column using column_name itself doesn't require $appends, that is correct, but only mistake is you missed out a parameter in accessor function which contains the value for column_name which is passed by laravel. You need not to use $this.

//In ModelName model
public function getColumnNameAttribute($column_value)
{
    return "Hello ".$column_value;
}