环境

• Debian GNU/Linux 7.8(wheezy) Linux marvin 3.16-0.bpo.2-amd64 #1 SMP Debian 3.16.3-2~bpo70+1 (2014-09-21) x86_64 GNU/Linux
• 树莓派2
• Yocto Poky
• QT5

我的目标是在RPi2上运行Chromium布局Web引擎

我希望能够在我的RPi2上运行它:

import QtQuick 2.1
import QtQuick.Controls 1.1
import QtWebEngine 1.0

ApplicationWindow {
    width: 1280
    height: 720
    visible: true
    WebEngineView {
        id: webview
        url: "http://www.qt-project.org"
        anchors.fill: parent
    }
}

我如何创建我的RPi2图像

我已经使用Yocto成功为我的RPi2创建了一个图像,使用这个独特而神奇的葡萄牙语教程,这个用英语写的

在几行之后,我如何能够为我的RPi2生成图像

mkdir -p ~/yocto/dl
cd ~/yocto
git clone -b dizzy git://git.yoctoproject.org/poky poky-dizzy
cd poky-dizzy
git clone git://git.yoctoproject.org/meta-raspberrypi 
git clone -b dizzy https://github.com/meta-qt5/meta-qt5.git
git clone -b dizzy git://git.openembedded.org/meta-openembedded
git …

我使用paperclip将头像附加到我的用户身上,在我的模型中:

has_attached_file :avatar, 
    :styles => {square_tiny: '50x50#', square_small: '100x100#', square: '200x200#'}

我有一张表格

<%= form_for(@user_profile, 
        :url => { :controller => :user_profiles, :action => :update_general_info, :id => @user_profile.id }, 
            :html => {  :multipart => true, 
                :class=> "form-horizontal" }) do |f| %>

            <div class="control-group">
              <%= f.label :avatar, :class => "control-label" %>
                <div class="controls">
                    <%= f.file_field :avatar  %>
                </div>
            </div>

....

<% end %>

上传工作完美,但我回来编辑我的用户,文件字段显示'没有选择文件'.由于我正在验证该头像的存在,每次用户编辑他的详细信息时,他都必须再次上传他的头像...

我该如何解决这个问题？

我认为这:multipart => true会有所帮助,但事实并非如此.

我想将sails.js(版本0.9.7)应用程序部署到Openshift但是在git push我得到这个日志之后:

debug: Lowering sails...
DEBUG: Starting child process with 'node app.js'
.
.
.
info: Server lifted in `/var/lib/openshift/525ccaba5973caa65100002b/app-root/runtime/repo`
info: To see your app, visit http://127.7.215.1:8080
info: To shut down Sails, press <CTRL> + C at any time.
.
.
debug: --------------------------------------------------------
debug: :: Tue Oct 15 2013 03:03:56 GMT-0400 (EDT)
debug: 
debug: Environment      : development
debug: Host             : 127.7.215.1
debug: Port             : 8080
debug: --------------------------------------------------------
.
.
error: Server doesn't seem to …

我正在尝试使用Xvfb在Docker容器内运行Chrome无头.但是,虽然ps显示Chrome进程存在,但它没有到达我的测试网站.在Docker外部运行相同的命令是成功的.

Xvfb :0 -screen 0 1024x768x24 &
DISPLAY=:0 google-chrome http://mytestpage.com

在Docker中,我收到以下消息/错误:

Xlib:  extension "RANDR" missing on display ":0".
Xlib:  extension "RANDR" missing on display ":0".
[1180:1180:1120/051319:ERROR:desktop_window_tree_host_x11.cc(882)] Not implemented reached in virtual void views::DesktopWindowTreeHostX11::InitModalType(ui::ModalType)
[1223:1223:1120/051319:ERROR:sandbox_linux.cc(338)] InitializeSandbox() called with multiple threads in process gpu-process
[1180:1201:1120/051319:ERROR:browser_gpu_channel_host_factory.cc(144)] Failed to create channel.

而

ps au | grep chrome

* root       128  0.1  0.4 533772 69868 ?        Sl+  06:02   0:00 /opt/google/chrome/chrome http://mytestpage.com
* root       139  0.0  0.2 342648 …

sails.sockets.rooms()和sails.sockets.socketRooms()都已弃用

在文档中:

不推荐使用此方法.请使用应用级代码跟踪您的房间.

我是SailsJS的新手.

问题1:我怎么能开始这个？我应该在哪里声明我的房间数组或哈希？

问题2:如何获取连接的客户端列表？

我正在运行一个SailsJS实例(v0.12.3),我有一个控制器MyModelController处理WebSocket(socket.io)连接,如果用户已经过身份验证,则允许该连接.

MyModelController

module.exports = {
    /**
     * Socket connection
     */
    connect: function(req, res) {
      /* Checks it's a socket connection request */
      if (!req.isSocket) { return res.badRequest();}

      /* Checks it's authenticated */
      if (req.session.me) {
        User.findOne(req.session.me, function (err, me) {
          if (req.param('name')) {

            MyModel.findOne({
              name: req.param('name')
            }).exec(function(err, objectFound) {

              /* e.g. Join a room named after the params passed */
              sails.sockets.join(req, objectFound.name); 

              return res.ok({ message: "All is OK!"}});
            });
          } 
        });
      }
    }
} …

亚马逊 AWS Ubuntu 服务器

~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.5 LTS
Release:    16.04
Codename:   xenial

问题：PM2 已过期

$ pm2 list

>>>> In-memory PM2 is out-of-date, do:
>>>> $ pm2 update
In memory PM2 version: 2.4.6
Local PM2 version: 3.0.3

试过

pm2 update

...工作直到我重新启动

试过

npm remove pm2 -g
which pm2 
npm install pm2@latest -g
which pm2
sudo reboot

任何指针？

这是我的文件。

这里是我认为问题的核心。

Could not resolve dependency:
npm ERR! peer graphql@"^0.12.0 || ^0.13.0 || ^14.0.0" from graphql-middleware@4.0.2

docker-compose.yml

version: '3.7'

services:
  apollo:
    container_name: apollo
    build:
      context: .
      dockerfile: Dockerfile
    environment:
        -  NODE_ENV=development
    volumes:
      - '.:/app'
      - '/app/node_modules'

    ports:
      - 4000:4000

    restart: always

文件

# Use the official image as a parent image.
FROM node:current-slim

# Set the working directory.
WORKDIR /app

# Setting environment path.
ENV PATH=/app/node_modules/.bin:$PATH

# Copy the file from your host to your current location.
COPY package.json . …

在三星Galaxy S2 Android 6.0.1 + Chrome v55上,当我getUserMedia在页面加载时,会出现获取的视频轨道live.

当我从我的相机中选择后置摄像头时,我会触发另一次我gUM的约束使用那个精确的后面cameraId,视频轨道是ended,我有一个黑色矩形而不是一个流.

var constraints = {
    video: {
        deviceId: {
            exact: defaultVideoDeviceId
        }
    },
    audio: true
};

gUM包装

function gUM(constraints, callback) {
    console.debug("WebRTC constraints", constraints);

    // Stopping streaming before starting the new one
    if (window.streams.local) {
        window.streams.local.getTracks().forEach(function(track) {
          track.stop();
        });
    }

    navigator.mediaDevices.getUserMedia(constraints)
        .then(stream => {
            console.debug("New MediaStream > Tracks", stream.getTracks());
            window.streams.local = stream;
            callback && callback(stream);
        })
        .catch(err => {
            console.log("Raised error …

我正在使用旧的NodeJS代码,我想在开始修复其余部分之前清除所有缩进问题.

如何配置ESlint仅显示和修复indent问题？