src/QueryBuilder.php
public function where($column, $operator = null, $value = null, $boolean = 'and')
    {
        // If the column is an array, we will assume it is an array of key-value pairs
        // and can add them each as a where clause. We will maintain the boolean we
        // received when the method was called and pass it into the nested where.
        if (is_array($column)) {
            return $this->addArrayOfWheres($column, $boolean);
        }

        // Then we need to check if we are dealing with a translated column and defer
        // to the "whereTranslated" clause in that case. That way the user doesn't
        // need to worry about translated columns and let us handle the details.
        if(in_array($column, $this->model->translatableAttributes())) {
            return $this->whereTranslated($column, $operator, $value, $boolean);
        }

        return parent::where($column, $operator, $value, $boolean);
    }
public function where($column, $operator = null, $value = null, $boolean = 'and')
    {
        // If the column is an array, we will assume it is an array of key-value pairs
        // and can add them each as a where clause. We will maintain the boolean we
        // received when the method was called and pass it into the nested where.
        if (is_array($column)) {
            return $this->addArrayOfWheres($column, $boolean);
        }

        // Then we need to check if we are dealing with a translated column and defer
        // to the "whereTranslated" clause in that case. That way the user doesn't
        // need to worry about translated columns and let us handle the details.
        if(in_array($column, $this->model->translatableAttributes())) {
            return $this->whereTranslated($column, $operator, $value, $boolean);
        }

        return parent::where($column, $operator, $value, $boolean);
    }
Add a where clause to the query.

@param  string|\Closure  $column
@param  string  $operator
@param  mixed   $value
@param  string  $boolean
@return $this

@throws \InvalidArgumentException