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<?php |
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// +---------------------------------------------------------------------- |
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// | ThinkPHP [ WE CAN DO IT JUST THINK ] |
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// +---------------------------------------------------------------------- |
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// | Copyright (c) 2006~2019 http://thinkphp.cn All rights reserved. |
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// +---------------------------------------------------------------------- |
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 ) |
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// +---------------------------------------------------------------------- |
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// | Author: liu21st <[email protected]> |
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// +---------------------------------------------------------------------- |
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declare (strict_types = 1); |
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namespace think\db\concern; |
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use Closure; |
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use think\App; |
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use think\db\Raw; |
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use think\model\relation\OneToOne; |
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/** |
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* JOIN和VIEW查询 |
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*/ |
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trait JoinAndViewQuery |
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{ |
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/** |
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* 查询SQL组装 join |
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* @access public |
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* @param mixed $join 关联的表名 |
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* @param mixed $condition 条件 |
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* @param string $type JOIN类型 |
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* @param array $bind 参数绑定 |
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* @return $this |
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*/ |
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public function join($join, string $condition = null, string $type = 'INNER', array $bind = []) |
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{ |
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$table = $this->getJoinTable($join); |
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if (!empty($bind) && $condition) { |
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$this->bindParams($condition, $bind); |
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} |
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$this->options['join'][] = [$table, strtoupper($type), $condition]; |
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return $this; |
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} |
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/** |
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* LEFT JOIN |
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* @access public |
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* @param mixed $join 关联的表名 |
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* @param mixed $condition 条件 |
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* @param array $bind 参数绑定 |
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* @return $this |
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*/ |
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public function leftJoin($join, string $condition = null, array $bind = []) |
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{ |
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return $this->join($join, $condition, 'LEFT', $bind); |
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} |
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/** |
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* RIGHT JOIN |
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* @access public |
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* @param mixed $join 关联的表名 |
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* @param mixed $condition 条件 |
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* @param array $bind 参数绑定 |
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* @return $this |
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*/ |
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public function rightJoin($join, string $condition = null, array $bind = []) |
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{ |
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return $this->join($join, $condition, 'RIGHT', $bind); |
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} |
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/** |
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* FULL JOIN |
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* @access public |
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* @param mixed $join 关联的表名 |
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* @param mixed $condition 条件 |
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* @param array $bind 参数绑定 |
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* @return $this |
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*/ |
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public function fullJoin($join, string $condition = null, array $bind = []) |
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{ |
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return $this->join($join, $condition, 'FULL'); |
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} |
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/** |
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* 获取Join表名及别名 支持 |
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* ['prefix_table或者子查询'=>'alias'] 'table alias' |
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* @access protected |
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* @param array|string|Raw $join JION表名 |
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* @param string $alias 别名 |
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* @return string|array |
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*/ |
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protected function getJoinTable($join, &$alias = null) |
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{ |
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if (is_array($join)) { |
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$table = $join; |
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$alias = array_shift($join); |
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return $table; |
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} elseif ($join instanceof Raw) { |
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return $join; |
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} |
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$join = trim($join); |
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if (false !== strpos($join, '(')) { |
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// 使用子查询 |
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$table = $join; |
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} else { |
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// 使用别名 |
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if (strpos($join, ' ')) { |
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// 使用别名 |
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list($table, $alias) = explode(' ', $join); |
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} else { |
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$table = $join; |
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if (false === strpos($join, '.')) { |
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$alias = $join; |
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} |
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} |
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if ($this->prefix && false === strpos($table, '.') && 0 !== strpos($table, $this->prefix)) { |
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$table = $this->getTable($table); |
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} |
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} |
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if (!empty($alias) && $table != $alias) { |
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$table = [$table => $alias]; |
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} |
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return $table; |
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} |
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/** |
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* 关联预载入 JOIN方式 |
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* @access protected |
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* @param array|string $with 关联方法名 |
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* @param string $joinType JOIN方式 |
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* @return $this |
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*/ |
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public function withJoin($with, string $joinType = '') |
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{ |
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if (empty($with)) { |
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return $this; |
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} |
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$first = true; |
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/** @var Model $class */ |
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$class = $this->model; |
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foreach ((array) $with as $key => $relation) { |
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$closure = null; |
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$field = true; |
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if ($relation instanceof Closure) { |
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// 支持闭包查询过滤关联条件 |
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$closure = $relation; |
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$relation = $key; |
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} elseif (is_array($relation)) { |
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$field = $relation; |
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$relation = $key; |
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} elseif (is_string($relation) && strpos($relation, '.')) { |
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$relation = strstr($relation, '.', true); |
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} |
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/** @var Relation $model */ |
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$relation = App::parseName($relation, 1, false); |
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$model = $class->$relation(); |
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if ($model instanceof OneToOne) { |
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$model->eagerly($this, $relation, $field, $joinType, $closure, $first); |
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$first = false; |
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} else { |
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// 不支持其它关联 |
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unset($with[$key]); |
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} |
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} |
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$this->via(); |
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$this->options['with_join'] = $with; |
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return $this; |
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} |
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/** |
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* 指定JOIN查询字段 |
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* @access public |
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* @param string|array $join 数据表 |
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* @param string|array $field 查询字段 |
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* @param string $on JOIN条件 |
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* @param string $type JOIN类型 |
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* @param array $bind 参数绑定 |
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* @return $this |
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*/ |
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public function view($join, $field = true, $on = null, string $type = 'INNER', array $bind = []) |
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{ |
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$this->options['view'] = true; |
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$fields = []; |
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$table = $this->getJoinTable($join, $alias); |
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if (true === $field) { |
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$fields = $alias . '.*'; |
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} else { |
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if (is_string($field)) { |
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$field = explode(',', $field); |
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} |
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foreach ($field as $key => $val) { |
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if (is_numeric($key)) { |
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$fields[] = $alias . '.' . $val; |
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$this->options['map'][$val] = $alias . '.' . $val; |
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} else { |
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if (preg_match('/[,=\.\'\"\(\s]/', $key)) { |
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$name = $key; |
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} else { |
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$name = $alias . '.' . $key; |
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} |
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$fields[] = $name . ' AS ' . $val; |
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$this->options['map'][$val] = $name; |
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} |
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} |
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} |
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$this->field($fields); |
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if ($on) { |
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$this->join($table, $on, $type, $bind); |
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} else { |
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$this->table($table); |
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} |
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return $this; |
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} |
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/** |
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* 视图查询处理 |
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* @access protected |
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* @param array $options 查询参数 |
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* @return void |
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*/ |
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protected function parseView(array &$options): void |
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{ |
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foreach (['AND', 'OR'] as $logic) { |
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if (isset($options['where'][$logic])) { |
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foreach ($options['where'][$logic] as $key => $val) { |
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if (array_key_exists($key, $options['map'])) { |
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array_shift($val); |
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array_unshift($val, $options['map'][$key]); |
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$options['where'][$logic][$options['map'][$key]] = $val; |
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unset($options['where'][$logic][$key]); |
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} |
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} |
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} |
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} |
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if (isset($options['order'])) { |
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// 视图查询排序处理 |
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foreach ($options['order'] as $key => $val) { |
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if (is_numeric($key) && is_string($val)) { |
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if (strpos($val, ' ')) { |
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list($field, $sort) = explode(' ', $val); |
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if (array_key_exists($field, $options['map'])) { |
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$options['order'][$options['map'][$field]] = $sort; |
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unset($options['order'][$key]); |
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} |
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} elseif (array_key_exists($val, $options['map'])) { |
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$options['order'][$options['map'][$val]] = 'asc'; |
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unset($options['order'][$key]); |
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} |
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} elseif (array_key_exists($key, $options['map'])) { |
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$options['order'][$options['map'][$key]] = $val; |
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unset($options['order'][$key]); |
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} |
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} |
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} |
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} |
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} |
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framework
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