[英]phalcon count by id in volt
I'm facing problem in Phalcon.我在 Phalcon 中遇到了问题。 in my blog i have a category table there have all list of category like "a,b,c,d,e,f,g,h,i" and in my blog table have a column name category.
在我的博客中,我有一个类别表,其中包含所有类别列表,例如“a、b、c、d、e、f、g、h、i”,并且在我的博客表中有一个列名称类别。 in category column i'm inserting the id of category.
在类别列中,我插入类别的 id。 now the problem is i want to count how many post have in each category.
现在的问题是我想计算每个类别中有多少帖子。 i'm unable to get expected result.
我无法得到预期的结果。 count result result shows me result [0].
计数结果结果显示我的结果 [0]。 whats my fault?
我的错是什么?
[Blog Controller] [博客控制器]
$categories = Category::find();
$this->view->setVar('category', $categories);
$ab = Blogs::countBycategory($categories->id);
$this->view->setVar('ccat',$ab);
[Index View] [索引视图]
{% for categories in category %}
<a title="{{categories.cname}}" href="blog/category/{{categories.cname}}" class="tags">
{{ categories.cname }} <span>[ {{ccat}} ]</span></a>
{% endfor %}
You would benefit from using Model Relationships as referenced here: https://docs.phalconphp.com/uk/latest/reference/models.html#relationships-between-models您将受益于使用此处引用的模型关系: https : //docs.phalconphp.com/uk/latest/reference/models.html#relationships-between-models
Essentially your category model could look like this:本质上,您的类别模型可能如下所示:
<?php
class Category extends \Phalcon\Mvc\Model
{
public function initialize()
{
$this->hasMany("id", "Blogs", "category_id", [
"alias" => "articles"
]);
}
}
Then to get a count of articles per category, do something like this:然后要计算每个类别的文章数量,请执行以下操作:
$categories = Category::find();
foreach($categories as $category) {
echo $category->cname . " " . count($category->articles) . "\n";
}
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