Current File : /var/www/html/news/vendor/laravel/framework/src/Illuminate/Database/Concerns/BuildsQueries.php
<?php
namespace Illuminate\Database\Concerns;
trait BuildsQueries
{
/**
* Chunk the results of the query.
*
* @param int $count
* @param callable $callback
* @return bool
*/
public function chunk($count, callable $callback)
{
$this->enforceOrderBy();
$page = 1;
do {
// We'll execute the query for the given page and get the results. If there are
// no results we can just break and return from here. When there are results
// we will call the callback with the current chunk of these results here.
$results = $this->forPage($page, $count)->get();
$countResults = $results->count();
if ($countResults == 0) {
break;
}
// On each chunk result set, we will pass them to the callback and then let the
// developer take care of everything within the callback, which allows us to
// keep the memory low for spinning through large result sets for working.
if ($callback($results) === false) {
return false;
}
$page++;
} while ($countResults == $count);
return true;
}
/**
* Execute a callback over each item while chunking.
*
* @param callable $callback
* @param int $count
* @return bool
*/
public function each(callable $callback, $count = 1000)
{
return $this->chunk($count, function ($results) use ($callback) {
foreach ($results as $key => $value) {
if ($callback($value, $key) === false) {
return false;
}
}
});
}
/**
* Execute the query and get the first result.
*
* @param array $columns
* @return mixed
*/
public function first($columns = ['*'])
{
return $this->take(1)->get($columns)->first();
}
/**
* Apply the callback's query changes if the given "value" is true.
*
* @param mixed $value
* @param \Closure $callback
* @param \Closure $default
* @return mixed
*/
public function when($value, $callback, $default = null)
{
if ($value) {
return $callback($this, $value) ?: $this;
} elseif ($default) {
return $default($this, $value) ?: $this;
}
return $this;
}
}
Mini Shell