微信小程序仿朋友圈发布动态功能

<view class='page'>
 <textarea class='text' bindinput="input" placeholder="分享动态" auto-height/>
 <view class="image_content">
 <view class='image' wx:for="{{img_url}}">
  <image class="moment_img" src="{{item}}"></image>
 </view>
 <view class='image' style='display:{{hideadd?"none":"block"}}'>
  <image bindtap="chooseimage" class="moment_img" src='../../images/add.jpg'></image>
 </view>
 </view>
 <button bindtap="send" style='margin-right:5px;margin-left:5px'>发布</button>
</view>

.page{
 padding: 20px
}
.text{
 width: 100%;
 margin-bottom: 40px;
 font-size: 20px;
 padding: 5px
}
.image{
 width:31%;
 height: 100px;
 padding: 2px
}
.moment_img{
 width: 98px;
 height: 98px;
}
.image_content{
 width: 100%;
 display: flex;
 flex-wrap: wrap;
 margin-bottom: 20px
}

page({
 data: {
 img_url: [],
 content:''
 },
 onload: function (options) {
 },
 input:function(e){
 this.setdata({
  content:e.detail.value
 })
 },
 chooseimage:function(){
 var that = this;
 wx.chooseimage({
  count: 9, // 默认9 
  sizetype: ['original', 'compressed'], // 可以指定是原图还是压缩图，默认二者都有 
  sourcetype: ['album', 'camera'], // 可以指定来源是相册还是相机，默认二者都有 
  success: function (res) {
  if (res.tempfilepaths.length>0){
   //图如果满了9张，不显示加图
   if (res.tempfilepaths.length == 9){
   that.setdata({
    hideadd:1
   })
   }else{
   that.setdata({
    hideadd: 0
   })
   }
   //把每次选择的图push进数组
   let img_url = that.data.img_url;
   for (let i = 0; i < res.tempfilepaths.length; i++) {
   img_url.push(res.tempfilepaths[i])
   }
   that.setdata({
   img_url: img_url
   })
  }
  }
 }) 
 },
 //发布按钮事件
 send:function(){
 var that = this;
 var user_id = wx.getstoragesync('userid')
 wx.showloading({
  title: '上传中',
 })
 that.img_upload()
 },
 //图片上传
 img_upload: function () {
 let that = this;
 let img_url = that.data.img_url;
 let img_url_ok = [];
 //由于图片只能一张一张地上传，所以用循环
 for (let i = 0; i < img_url.length; i++) {
  wx.uploadfile({
  //路径填你上传图片方法的地址
  url: 'http://wechat.homedoctor.com/moments/upload_do',
  filepath: img_url[i],
  name: 'file',
  formdata: {
   'user': 'test'
  },
  success: function (res) {
   console.log('上传成功');
   //把上传成功的图片的地址放入数组中
   img_url_ok.push(res.data)
   //如果全部传完，则可以将图片路径保存到数据库
   if (img_url_ok.length == img_url.length) {
   var userid = wx.getstoragesync('userid');
   var content = that.data.content;
   wx.request({
    url: 'http://wechat.homedoctor.com/moments/adds',
    data: {
    user_id: userid,
    images: img_url_ok,
    content: content,
    },
    success: function (res) {
    if (res.data.status == 1) {
     wx.hideloading()
     wx.showmodal({
     title: '提交成功',
     showcancel: false,
     success: function (res) {
      if (res.confirm) {
      wx.navigateto({
       url: '/pages/my_moments/my_moments',
      })
      }
     }
     })
    }
    }
   })
   }
  },
  fail: function (res) {
   console.log('上传失败')
  }
  })
 }
 } 
})

public function upload_do(){
  extract(generaterequestparamvars());
  /**
   * upload.php
   *
   * copyright 2013, moxiecode systems ab
   * released under gpl license.
   *
   * license: http://www.plupload.com/license
   * contributing: http://www.plupload.com/contributing
   */
  #!! important:
  #!! this file is just an example, it doesn't incorporate any security checks and
  #!! is not recommended to be used in production environment as it is. be sure to
  #!! revise it and customize to your needs.
  // make sure file is not cached (as it happens for example on ios devices)
  header("expires: mon, 26 jul 1997 05:00:00 gmt");
  header("last-modified: " . gmdate("d, d m y h:i:s") . " gmt");
  header("cache-control: no-store, no-cache, must-revalidate");
  header("cache-control: post-check=0, pre-check=0", false);
  header("pragma: no-cache");
  echo $filename;
  // support cors
  // header("access-control-allow-origin: *");
  // other cors headers if any...
  if ($_server['request_method'] == 'options') {
   exit; // finish preflight cors requests here
  }
  if ( !empty($_request[ 'debug' ]) ) {
   $random = rand(0, intval($_request[ 'debug' ]) );
   if ( $random === 0 ) {
    header("http/1.0 500 internal server error");
    exit;
   }
  }
  // header("http/1.0 500 internal server error");
  // exit;
  // 5 minutes execution time
  @set_time_limit(5 * 60);
  // uncomment this one to fake upload time
  usleep(5000);
  // settings
  // $targetdir = ini_get("upload_tmp_dir") . directory_separator . "plupload";
  $targetdir = c('cache_dir').directory_separator.'uploads'.directory_separator.'tmps';
  $uploaddir = c('cache_dir').directory_separator.'uploads'.directory_separator.'tmps'.directory_separator.date('y').directory_separator.date('m').directory_separator.date('d');
  $uploadurl = '/uploads/tmps/'.date('y').'/'.date('m').'/'.date('d');
  //创建文件夹
  if(!is_dir($uploaddir)){
   @mkdir($uploaddir,0777,true);
  }
  $cleanuptargetdir = true; // remove old files
  $maxfileage = 5 * 3600; // temp file age in seconds
  // create target dir
  if (!file_exists($targetdir)) {
   @mkdir($targetdir);
  }
  // create target dir
  if (!file_exists($uploaddir)) {
   @mkdir($uploaddir);
  }
  // get a file name
  if (isset($_request["name"])) {
   $filename = $_request["name"];
  } elseif (!empty($_files)) {
   $filename = $_files["file"]["name"];
  } else {
   $filename = uniqid();
  }
  //$filename = uniqid("file_").'.'.pathinfo($filename, pathinfo_extension);
  $extension=pathinfo($filename, pathinfo_extension);
  if($extension){
   $filename = uniqid().'.'.$extension;
  }else{
   $filename = uniqid();
  }
  $md5file = @file('md5list.txt', file_ignore_new_lines | file_skip_empty_lines);
  $md5file = $md5file ? $md5file : array();
  if (isset($_request["md5"]) && array_search($_request["md5"], $md5file ) !== false ) {
   die('{"jsonrpc" : "2.0", "result" : null, "id" : "id", "exist": 1}');
  }
  $filepath = $targetdir . directory_separator . $filename;
  $uploadpath = $uploaddir . directory_separator . $filename;
  // chunking might be enabled
  $chunk = isset($_request["chunk"]) ? intval($_request["chunk"]) : 0;
  $chunks = isset($_request["chunks"]) ? intval($_request["chunks"]) : 1;
  // echo $_request["chunks"];
  // echo $_request["chunk"];
  // remove old temp files
  if ($cleanuptargetdir) {
   if (!is_dir($targetdir) || !$dir = opendir($targetdir)) {
    die('{"jsonrpc" : "2.0", "error" : {"code": 100, "message": "failed to open temp directory."}, "id" : "id"}');
   }
   while (($file = readdir($dir)) !== false) {
    $tmpfilepath = $targetdir . directory_separator . $file;
    // if temp file is current file proceed to the next
    if ($tmpfilepath == "{$filepath}_{$chunk}.part" || $tmpfilepath == "{$filepath}_{$chunk}.parttmp") {
     continue;
    }
    // remove temp file if it is older than the max age and is not the current file
    if (preg_match('/\.(part|parttmp)$/', $file) && (@filemtime($tmpfilepath) < time() - $maxfileage)) {
     @unlink($tmpfilepath);
    }
   }
   closedir($dir);
  }
  // open temp file
  if (!$out = @fopen("{$filepath}_{$chunk}.parttmp", "wb")) {
   die('{"jsonrpc" : "2.0", "error" : {"code": 102, "message": "failed to open output stream."}, "id" : "id"}');
  }
  if (!empty($_files)) {
   if ($_files["file"]["error"] || !is_uploaded_file($_files["file"]["tmp_name"])) {
    die('{"jsonrpc" : "2.0", "error" : {"code": 103, "message": "failed to move uploaded file."}, "id" : "id"}');
   }
   // read binary input stream and append it to temp file
   if (!$in = @fopen($_files["file"]["tmp_name"], "rb")) {
    die('{"jsonrpc" : "2.0", "error" : {"code": 101, "message": "failed to open input stream."}, "id" : "id"}');
   }
  } else {
   if (!$in = @fopen("php://input", "rb")) {
    die('{"jsonrpc" : "2.0", "error" : {"code": 101, "message": "failed to open input stream."}, "id" : "id"}');
   }
  }
  while ($buff = fread($in, 4096)) {
   fwrite($out, $buff);
  }
  @fclose($out);
  @fclose($in);
  rename("{$filepath}_{$chunk}.parttmp", "{$filepath}_{$chunk}.part");
  $index = 0;
  $done = true;
  for( $index = 0; $index < $chunks; $index++ ) {
   if ( !file_exists("{$filepath}_{$index}.part") ) {
    $done = false;
    break;
   }
  }
  if ( $done ) {
   if (!$out = @fopen($uploadpath, "wb")) {
    die('{"jsonrpc" : "2.0", "error" : {"code": 102, "message": "failed to open output stream."}, "id" : "id"}');
   }
   if ( flock($out, lock_ex) ) {
    for( $index = 0; $index < $chunks; $index++ ) {
     if (!$in = @fopen("{$filepath}_{$index}.part", "rb")) {
      break;
     }
     while ($buff = fread($in, 4096)) {
      fwrite($out, $buff);
     }
     @fclose($in);
     @unlink("{$filepath}_{$index}.part");
    }
    flock($out, lock_un);
   }
   @fclose($out);
  }
  // return success json-rpc response
  //die('{"jsonrpc" : "2.0", "result" : null, "id" : "id"}');
  die($uploadurl .'/'. $filename);
 }

public function adds()
 {
  try{
   d(self::$moments_model)->adds();
   $ajaxreturndata['status'] = 1;
   $ajaxreturndata['message'] = 'success';
  }catch (\exception $e){
   $ajaxreturndata['status'] = 0;
   $ajaxreturndata['message'] = 'fail';
  }
  $this->ajaxreturn($ajaxreturndata);
 }

public function adds()
 {
  extract(generaterequestparamvars());
  $user = d(self::$wechat_user)->find($user_id);
  $data = [];
  $data['user_id'] = $user_id;
  $data['user_name'] = $user['nickname'];
  $data['user_img'] = $user['imageurl'];
  $data['content'] = $content;
  $data['images'] = $images;
  $data['create_time'] = time();
 
  if ($this->add($data) === false) {
   throw new \exception('operation_failed');
  }
 }

public function my_moments()
 {
  try{
   $data = d(self::$moments_model)->my_moments();
   $ajaxreturndata['status'] = 1;
   $ajaxreturndata['message'] = 'success';
   $ajaxreturndata['data'] = $data;
  }catch (\exception $e){
   $ajaxreturndata['status'] = 0;
   $ajaxreturndata['message'] = 'fail';
  }
  $this->ajaxreturn($ajaxreturndata);
 }

public function my_moments()
 {
  extract(generaterequestparamvars());
  $user = d(self::$wechat_user)->find($user_id);
  if($user['is_doctor'] == 1){
   $conditions = [];
   $conditions['user_id'] = $user_id;
   $doctor = d(self::$doctor_model)->where($conditions)->find();
   $identity = $doctor['hospital']. "" . $doctor['grade'];
  }else{
   $identity = '';
  }
  $conditions = [];
  $conditions['user_id'] = $user_id;
  $moments = $this->where($conditions)->order('create_time desc')->select();
  for($i = 0 ; $i < count($moments) ; $i ++){
   $moments[$i]['images'] = json_decode($moments[$i]['images'],true);
  }
  $data = [];
  $data[0] = $user;
  $data[1] = $moments;
  $data[2] = $identity;
  return $data;
 }

<image class="moment_img" src="http://wechat.homedoctor.com{{image}}"></image>