Question

我尝试按名称和/或类别和/或位置和/或月份建立高级搜索，但是我有一个无法解决的问题，这是控制器；

$searchName = $advancedSearchData['search_name'];
$searchCategory = $advancedSearchData['search_category'];
$searchLocation = $advancedSearchData['search_location'];

        if(!empty($searchName)) {
            $allCourses = Courses::where('course_name', 'like', '%'.$searchName.'%') -> get();
        }

        if($searchCategory !== 0) {
            $allCourses = Courses::where('course_name', 'like', '%'.$searchName.'%') -> where(['category_id' => $searchLocation]) -> get();
        }

        if($coursesLocation !== 0) {
            $allCourses = Courses::where('course_name', 'like', '%'.$searchName.'%') -> where(['location' => $searchLocation]) -> get();
        }

return view('layouts.public_layouts.courses.courses_search') -> with(compact('allCourses'));

Answer 1

您可以尝试

$allCourses = Courses::where(function($query) use ($advancedSearchData) {
                    if(isset($advancedSearchData['search_name'])){
                        $query->where('course_name', 'like', '%'.$advancedSearchData['search_name'].'%');
                    }
                    if(isset($advancedSearchData['search_category']))){
                        $query->where(['category_id' => $advancedSearchData['search_category']);
                    }
                    if(isset($advancedSearchData['search_location']))){
                        $query->where(['location' => $advancedSearchData['search_location']);
                    }
                })
                ->get();

Answer 2

您可以尝试一下。我不知道问题到底是什么，但是我可以看到问题。在高级搜索中，您必须在代码末尾使用->get()。这样，您可以在执行之前将任何条件添加到查询中。

$allCourses = new Course();
$allCourses = $allCourses->newQuery();

$searchName = $advancedSearchData['search_name'];
$searchCategory = $advancedSearchData['search_category'];
$searchLocation = $advancedSearchData['search_location'];

if(!empty($searchName)) {
$allCourses = $allCourses->where('course_name', 'like', '%'.$searchName.'%');
}

if($searchCategory !== 0) {
$allCourses = $allCourses->where('course_name', 'like', '%'.$searchName.'%') -> where(['category_id' => $searchLocation]);
}

if($coursesLocation !== 0) {
$allCourses = $allCourses->where('course_name', 'like', '%'.$searchName.'%') -> where(['location' => $searchLocation]);
}

$allCourses = $allCourses->get();

return view('layouts.public_layouts.courses.courses_search') -> with(compact('allCourses'));

Answer 3

我认为您将面临的问题是未定义的索引，因此您必须首先检查数组索引，例如：

 $searchName     = $advancedSearchData['search_name'] ?? null;
 $searchCategory = $advancedSearchData['search_category'] ?? null;
 $searchLocation = $advancedSearchData['search_location'] ?? null;

 $query = (new Course())->newQuery();

 if($searchName) {
        $query->where('course_name', 'like', '%'.$searchName.'%');
    }

 if($searchCategory) {
        $query->where('course_name', 'like', '%'.$searchName.'%') -> where(['category_id' => $searchLocation]);
    }

 if($coursesLocation) {
        $query->where('course_name', 'like', '%'.$searchName.'%') -> where(['location' => $searchLocation]);
    }

$allCourses = $query->get();

return view('layouts.public_layouts.courses.courses_search')->with(compact('allCourses'));

高级搜索Laravel 5.8

3 个答案: