Question

我有这些模特，场地，评论，用户。用户可以在多个场地得分 reviews有很多review venue属于user和public function score() { $reviewCount = $this->reviews()->count(); $qualitySum = $this->reviews()->sum('quality') * 2; $decorSum = $this->reviews()->sum('decor'); $venueAverage = ($qualitySum + $decorSum) / ($reviewCount * 30); $minReview = 5; //based on weighted average and Barnsley average $average = ($reviewCount * Review::R()) / ($reviewCount + $minReview) + ($minReview * $venueAverage) / ($reviewCount + $minReview); $average = round($average, 1); return $average; }

在我的Venue模型上我有一个计算场地得分的方法：

def find_substrings(s, delim_start, delim_end):
    """Find the string that is delimited by two different strings."""
    start = s.find(delim_start)
    # to calculate the length of the start delimiter
    len_delim_start = len(delim_start)
    while start != -1:
        end = s.find(delim_end, start + 1)
        substring = s[(start + len_delim_start):end]
        # print only if substring is not empty
        if substring: print substring
        start = s.find(delim_start, end + 1)

html = """
<td><strong></strong></td><td><strong></strong></td><td><strong></strong></td><td><strong></strong>
</td><td><strong>Mar08</strong></td><td><strong>Mar09</strong></td><td><strong>Mar10</strong></td>
<td><strong>Mar11</strong></td><td><strong>Mar12</strong></td><td><strong>Mar13</strong></td></tr>
"""

html2 = """
<td><strong>0.00</strong></td><td><strong>0.00</strong></td><td><strong>0.00</strong></td><td>
<strong>0.21</strong></td><td><strong>0.23</strong></td><td><strong>1.23</strong></td><td><strong>
1.30</strong></td><td><strong>1.74</strong></td><td><strong>0.87</strong></td><td><strong>
0.98</strong></td></tr>
"""

find_substrings(html2, "<strong>", "</strong>")

# output:
# 0.00
# 0.00
# 0.00
# 0.21
# 0.23
# 1.23
# 1.30
# 1.74
# 0.87
# 0.98

以下是问题：如何检索得分> 3的场地我如何根据分数订购结果

Answer 1

查看http://laravel.com/docs/5.1/eloquent-relationships，他们使用以下示例：

// Retrieve all posts with at least one comment containing words like foo%
$posts = Post::whereHas('comments', function ($query) {
    $query->where('content', 'like', 'foo%');
})->get();

基于以上所述，你应该能够将约束放入你的“评论”中，其中有函数：

$venues = Venue::whereHas('location', function ($query) use ($city) {
        $query->whereCityId($city->id);
    })
        ->whereHas('cuisines', function ($query) use ($cuisine) {
            $query->whereName($cuisine);
        })
        ->whereHas('reviews',function($query) use ($minCount)
        {
            $query->where('score', '>', 3);
        })
        ->take(3)->get();

您还可以通过在＆gt; get（）之前或之后添加 - ＆gt; count（）来获取计数，具体取决于您的使用情况。

过滤结果基于模型方法

1 个答案: