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预载入查询支持指定字段查询

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thinkphp
2016-06-09 10:30:04 +08:00
parent b50bcd5298
commit 3c57c610dc
1 changed files with 34 additions and 2 deletions
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36
library/think/db/Query.php
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@@ -1377,17 +1377,33 @@ class Query
$name = Loader::parseName(basename(str_replace('\\', '/', $currentModel)));
$table = $this->getTable();
$alias = isset($info['alias'][$name]) ? $info['alias'][$name] : $name;
$this->table($table)->alias($alias)->field(true, false, $table, $alias);
$this->table($table)->alias($alias);
if (isset($this->options['field'])) {
$field = $this->options['field'];
unset($this->options['field']);
} else {
$field = true;
}
$this->field($field, false, $table, $alias);
}
// 预载入封装
$joinTable = $model->getTable();
$joinName = Loader::parseName(basename(str_replace('\\', '/', $info['model'])));
$joinAlias = isset($info['alias'][$joinName]) ? $info['alias'][$joinName] : $joinName;
$this->via($joinAlias);
$this->join($joinTable . ' ' . $joinAlias, $alias . '.' . $info['localKey'] . '=' . $joinAlias . '.' . $info['foreignKey'])->field(true, false, $joinTable, $joinAlias, $joinName . '__');
$this->join($joinTable . ' ' . $joinAlias, $alias . '.' . $info['localKey'] . '=' . $joinAlias . '.' . $info['foreignKey']);
if ($closure) {
// 执行闭包查询
call_user_func_array($closure, [ & $this]);
//指定获取关联的字段
//需要在 回调中 调方法 withField 方法，如
// $query->where(['id'=>1])->withField('id,name');
if (!empty($this->options['with_field'])) {
$field = $this->options['with_field'];
unset($this->options['with_field']);
}
$this->field($field, false, $joinTable, $joinAlias, $joinName . '__');
}
$i++;
} elseif ($closure) {
@@ -1399,6 +1415,22 @@ class Query
return $this;
}
/**
* 关联预加载中 获取关联指定字段值
* example:
* Model::with(['relation' => function($query){
* $query->withField("id,name");
* }])
*
* @param string | array $field 指定获取的字段
* @return $this
*/
public function withField($field)
{
$this->options['with_field'] = $field;
return $this;
}
/**
* 设置当前字段添加的表别名
* @access public