Laravel 的 PDO 错误绑定

Question

我有一个完美的搜索查询（我删除了一些不重要的代码）：

$posts = new Post;

if(Input::has('query')) {
    // Search for posts with title or tags matching the given criteria
    $posts = $posts
        ->addSelect(DB::raw("MATCH(posts.title) AGAINST (?) as post_score"))
        ->addSelect(DB::raw("MATCH(tags.title) AGAINST (?) as tag_score"))
        ->where(function($query) {
            return $query
                ->whereRaw('MATCH(posts.title) AGAINST (?)')
                ->orWhereRaw('MATCH(tags.title) AGAINST (?)');
        })
        ->orderBy(DB::raw('post_score+tag_score'), 'desc')
        ->setBindings([ $input['query'], $input['query'], $input['query'], $input['query'] ]);
}

但只要我在上述if() 语句之前添加这段代码：

if(Input::has('filter')) {
    $posts = $posts->whereType($input['filter']); //Filter type by either 'article' or 'question'
}

...我收到此错误：

[2014-11-04 19:28:18] production.ERROR: PDO error: SQLSTATE[HY093]: Invalid parameter number (SQL: select `posts`.*, COALESCE(SUM(post_votes.rating), 0) as rating, MATCH(posts.title) AGAINST (css) as post_score, MATCH(tags.title) AGAINST (css) as tag_score from `posts` left join `post_tags` on `post_tags`.`post_id` = `posts`.`id` left join `tags` on `tags`.`id` = `post_tags`.`tag_id` left join `post_votes` on `post_votes`.`post_id` = `posts`.`id` where `type` = css and (MATCH(posts.title) AGAINST (css) or MATCH(tags.title) AGAINST (?)) group by `posts`.`id` order by post_score+tag_score desc, `views` desc) [] []

我输入了css 作为搜索查询，该类型应在question 上进行过滤。如您所见，变量未正确绑定（不知道正确的词）。这怎么可能？我也试过这个不起作用：

->where(function($query) use ($input) {
    return $query
        ->whereRaw('MATCH(posts.title) AGAINST (?)', [$input['query']])
        ->orWhereRaw('MATCH(tags.title) AGAINST (?)', [$input['query']]);
})

提前致谢。

Answer 1

这是你需要的：

if(Input::has('filter')) {
  $posts->whereType($input['filter']); //Filter type by either 'article' or 'question'
}

if(Input::has('query')) {
  // no need for this:
  // $posts = $posts
  // just:
  $posts
    ->addSelect(DB::raw("MATCH(posts.title) AGAINST (?) as post_score"))
    ->addBinding($input['query'], 'select')
    ->addSelect(DB::raw("MATCH(tags.title) AGAINST (?) as tag_score"))
    ->addBinding($input['query'], 'select')
    ->where(function($query) use ($input) {
       $query
         ->whereRaw('MATCH(posts.title) AGAINST (?)', [$input['query']])
         ->orWhereRaw('MATCH(tags.title) AGAINST (?)', [$input['query']]);
    })
    ->orderBy(DB::raw('post_score+tag_score'), 'desc')
}