我的控制员:
function getFeed()
{
$feed_url = $this->input->get("url");
$content = file_get_contents($feed_url);
$x = new SimpleXmlElement($content);
foreach($x->channel->item as $entry) {
$feeds[] = array(
'title' => (string)$entry->title,
'url'=> (string)$entry->link,
'username' => $this->session->userdata('username')
);
$this->load->model('membership_model');
$this->membership_model->feeds($feeds);
}
型号:
function feeds($feeds_data)
{
$this->db->insert_batch('feeds', $feeds_data);
}
如果表中不存在行,是否有要插入的函数?我有一个包含4列的表:id,title,url,username。当我点击它时我有一个锚,它调用geFeed函数并将信息插入表中。但我想只在不存在的情况下插入。
答案 0 :(得分:2)
我遇到了同样的挑战,所以我最终想出了一个可能对你有帮助的功能。
function safe_update_batch($table_name,$records,$filter_field)
{
$filters=array();
foreach($records as $record)$filters[]=$record[$filter_field];
$this->db->query("SET SESSION group_concat_max_len=10000000");
$query=$this->db->select("GROUP_CONCAT($filter_field) AS existing_keys",FALSE)->where_in($filter_field, $filters)->get($table_name);
$row=$query->row();
$found_fields=explode(',',$row->existing_keys);
$insert_batch=array();
$update_batch=array();
foreach($records as $record)
{
if(in_array($record[$filter_field],$found_fields))$update_batch[]=$record;
else $insert_batch[]=$record;
}
if(!empty($insert_batch))$this->db->insert_batch($table_name,$insert_batch);
if(!empty($update_batch))$this->db->update_batch($table_name,$update_batch,$filter_field);
}
//样本用法
$this->safe_update_batch('feeds', $feeds_data,'title');
答案 1 :(得分:1)
你可以在你的模特中试试!!
function insertClient($array)
{
$this->db->from('MyTable');
$this->db->where('Id', $array['Id']);
$query = $this->db->get();
if($query->num_rows() != 0){
$data = array(
'name'=>$array['name'],
'phone'=>$array['phone'],
'email'=>$array['email']
);
$this->db->where('Id', $array['Id']);
$this->db->update('CLIENTS', $data);
}else{
$data = array(
'name'=>$array['name'],
'phone'=>$array['phone'],
'email'=>$array['email']
);
$this->db->insert('CLIENTS',$data);
}
}
在控制器中:
$this->site_model->insertClient($_POST);
答案 2 :(得分:0)
遗憾的是,如果您使用的是活动记录类,则INSERT IF NOT EXISTS
功能不存在。你可以试试
SELECT
之前做某种INSERT
来确定记录是否已经存在INSERT IF NOT EXISTS
执行$this->db->query('INSERT IF NOT EXISTS...')
答案 3 :(得分:0)
function getFeed()
{
// Load the model up here - otherwise you are loading it multiple times
$this->load->model('membership_model');
$feed_url = $this->input->get("url");
$content = file_get_contents($feed_url);
$x = new SimpleXmlElement($content);
foreach($x->channel->item as $entry) {
// check if the feed is unique, if true then add to array
if( $this->membership_model->singleFeedIsUnique($entry) == TRUE ){
$feeds[] = array(
'title' => (string)$entry->title,
'url'=> (string)$entry->link,
'username' => $this->session->userdata('username')); }
} //foreach
// check to make sure we got any feeds with isset()
// if yes, then add them
if (isset($feeds)){ $this->membership_model->feeds($feeds); }
}
答案 4 :(得分:0)
您可以在模型中尝试此操作并让控制器无需更改
function feeds($feeds_data)
{
$data = array(
title => $feeds_data[0],
url => $feeds_data[1],
username => $feeds_data[2]
);
$this->db->select('*');
$this->db->from('mytable');
$this->db->where('title',$feeds_data[0]);//you can use another field
if ($this->db->count_all_results() == 0) {
$query = $this->db->insert('mytable', $data);//insert data
} else {
$query = $this->db->update('mytable', $data, array('title'=>$feeds_data[0]));//update with the condition where title exist
}
}
你可以检查id,如果有的话,添加数据数组并用它来检查是否存在