Question

我有很多条件组合可能会进入数据库调用，我无法为每个调用单独调用。我的if / else语句太多了。

所以我想把条件推入一个数组来动态构建条件语句和传入的值。所以：

    $cond_values = array();
    $cond_values[] = $lender->id;
    $cond_string = "lender_id = ?";

    if (something) {
      $cond_string .= " AND search_id =?";
      $cond_values[] = $search_id; 
    }
    if (something_else) {
      $cond_string .= " AND cust_id =?";
      $cond_values[] = $cust_id; 
    }

    $matches = Match::all(array(
      "select" => $select,
      "conditions" => array($cond_string, $cond_values),
      "order" => $order,
      "joins" => $joins
    ));

但这仅在$ cond_values中包含0或1个元素时才有效。不止一个值，我得到索引1＆＃34;＆＃34;无约束参数;错误。它似乎只有在我这样做时才会起作用：

    $matches = Match::all(array(
      "select" => $select,
      "conditions" => array($cond_string, $cond_values[0],$cond_values[1] ),
      "order" => $order,
      "joins" => $joins
    ));

但价值量会有所不同，所以我无法做到这一点。我很欣赏任何见解。

Answer 1

试试这个：使用array_unshift()将$cond_string推到$cond_values数组的开头，然后将该数组传递给Match::all()：

$cond_values = array();
$cond_values[] = $lender->id;
$cond_string = "lender_id = ?";

if (something) {
  $cond_string .= " AND search_id =?";
  $cond_values[] = $search_id; 
}
if (something_else) {
  $cond_string .= " AND cust_id =?";
  $cond_values[] = $cust_id; 
}

array_unshift($cond_values, $cond_string);

$matches = Match::all(array(
  "select" => $select,
  "conditions" => $cond_values,
  "order" => $order,
  "joins" => $joins
));

phpactiverecord的一系列条件

1 个答案: