Phalcon 计数（伏特）

Question

我在 phalcon 伏特中遇到了计数问题。我有一个名为 category 的 table 并且有两列 id 和 cname，还有一个 table 博客和一列 [=12] =].我想显示每个类别中有多少 post。
当我将 post 插入博客 table 时，我在类别列中插入了它的类别 id。首先，我只是像这样检索所有类别的列表：

[controller]
$categories = Category::find();
$this->view->setVar('category', $categories);
$cx = Blogs::find();
$this->view->setVar('cates',$cx);

[Volt]
{% for categories in category %}
<a href="blog/category/{{categories.cname}}" class="tags">{{ categories.cname }} 
<span>[ 
{% for cx in cates %}
    {%if cx.category === categories.id %}
        <?php echo(count($cx->category)); ?>
    {% endif %}
{% endfor %}
]</span></a>
{% endfor %}

它呈现为“1 1 1”或“1 1”或“1”，但它应该呈现为“3”或“2”或“1”，我怎么了？

我也这样试过，但没有得到预期的输出：

{% for categories in category %}
<a href="blog/category/{{categories.cname}}" class="tags">{{ categories.cname }} 
<span>[ 
{% for cx in cates %}

{%if cx.category === categories.id %}
{% if loop.first %} {{ loop.length }} {% endif %}

{% endif %}

{% endfor %}
]</span></a>
{% endfor %}

Answer 1

您是否在 Phalcon 中定义了模型之间的关系？如果是这样，您可以使用内置命令查询每个类别的帖子总数

文档中的示例：

You can also use “count” prefix to return an integer denoting the count of the related records:

$robot = Robots::findFirst(2);
echo "The robot has ", $robot->countRobotsParts(), " parts\n";

我对 Volt 模板没有太多经验，但我想它会是这样的：

{% for categories in category %}
<a href="blog/category/{{categories.cname}}" class="tags">{{ categories.cname }} 
<span>[ 
  {{ categories.countBlogs }}
]</span></a>
{% endfor %}

参考：https://docs.phalconphp.com/en/latest/reference/models.html#taking-advantage-of-relationships

更新 - 模型关系

[型号：类别]

public function initialize()
{
    // id => primary key name of the Category table
    // Blogs => name of the table you want to create a relationship with
    // category => name of the foreign key column in your relationship table
    $this->hasMany('id', 'Blogs', 'category');
}

[型号：博客]

public function initialize()
{
    // category => blog column name which refers to the ID in the Category table
    // Category => name of the Category table
    // id => name of the primary key column in the Category table
    $this->belongsTo('category', 'Category', 'id');
}

Answer 2

不，先生，它不起作用。但我只是这样解决了我的问题：

[controller]
$categories = Category::find();
$this->view->setVar('category', $categories);

[volt]

{% for categories in category %}
<a href="blog/category/{{categories.cname}}" class="tags">{{ categories.cname }} 
<span>[ 
<?php 
$catcount = $this->modelsManager->executeQuery("SELECT Blogs.category FROM Blogs WHERE Blogs.category = $categories->id");echo(count($catcount));
?>
]</span></a>
{% endfor %}

现在它按预期工作了。在这里，我不与 model.Is 建立任何关系，好的，先生。请！谢谢

Phalcon 计数（伏特）

Phalcon count in volt

count

categories

phalcon

volt