小编Con*_*ech的帖子

我想在OSX 10.11上安装宅基地.我想要建立laravel应用程序.我无法从命令行运行homestead.当我尝试全局安装它时,我收到一个错误:

$ composer global require "laravel/homestead=~2.0"
Changed current directory to /Users/connorleech/.composer
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Conclusion: don't install laravel/homestead v2.1.8
    - Conclusion: don't install laravel/homestead v2.1.7
    - Conclusion: don't install laravel/homestead v2.1.6
    - Conclusion: don't install laravel/homestead v2.1.5
    - Conclusion: don't install laravel/homestead v2.1.4
    - Conclusion: don't install laravel/homestead v2.1.3
    - Conclusion: …

嘿,我正在尝试在新的ubuntu机器上安装rails.我安装了ruby和rvm但是我收到了"未能构建gem native扩展"的错误.这是什么意思？

$ sudo gem install rails -v 3.2.9

(没有sudo说我没有权限)

然后它输出了很多'抓取'命令,最终输出了这个错误:

    Building native extensions.  This could take a while...
    ERROR:  Error installing rails:
        ERROR: Failed to build gem native extension.

            /usr/bin/ruby1.9.1 extconf.rb
    /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- mkmf (LoadError)
        from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
        from extconf.rb:1:in `<main>'


    Gem files will remain installed in /var/lib/gems/1.9.1/gems/json-1.8.0 for inspection.
    Results logged to /var/lib/gems/1.9.1/gems/json-1.8.0/ext/json/ext/generator/gem_make.out

当我输入

$rails server

它说当前没有安装rails

我正在尝试启动一个节点应用程序,我认为rabbitmq正在阻碍.

与此主题类似:"名称为"兔子"已经在运行",但"无法连接到节点'兔子'"

$ ps aux | grep erl
rabbitmq  1327  0.0  0.0   2376   300 ?        S    Dec13   0:00 /usr/lib/erlang/erts-5.8.5/bin/epmd -daemon
rabbitmq  1344  0.0  0.3  59560 14888 ?        Sl   Dec13   0:10 /usr/lib/erlang/erts-5.8.5/bin/beam.smp -W w -K true -A30 -P 1048576 -- -root /usr/lib/erlang -progname erl -- -home /var/lib/rabbitmq -- -noshell -noinput -sname rabbit@jasonshark -boot /var/lib/rabbitmq/mnesia/rabbit@jasonshark-plugins-expand/rabbit -kernel inet_default_connect_options [{nodelay,true}] -sasl errlog_type error -sasl sasl_error_logger false -rabbit error_logger {file,"/var/log/rabbitmq/rabbit@jasonshark.log"} -rabbit sasl_error_logger {file,"/var/log/rabbitmq/rabbit@jasonshark-sasl.log"} -os_mon start_cpu_sup true -os_mon start_disksup false -os_mon start_memsup false -mnesia dir …

我试图修改我的gruntfile但是我的缩进有很多错误.空格是否总是对gruntfiles很重要？什么是解决这些错误的最佳方法,计算空格？

$ grunt
Running "newer:jshint" (newer) task

Running "newer:jshint:all" (newer) task

Running "jshint:all" (jshint) task

Gruntfile.js
  line 33  col 11  Expected 'options' to have an indentation at 9 instead at 11.
  line 36  col 7   Expected '}' to have an indentation at 9 instead at 7.
  line 37  col 7   Expected 'js' to have an indentation at 9 instead at 7.
  line 38  col 9   Expected 'files' to have an indentation at 11 instead at 9.
  line 39  col 9 …

我有一个用yeoman的generator-angular生成的网站,我想用github页面发布这个网站.我创建了gh-pages分支但我的repo没有出现在myusername.github.io/myreponame我认为原因是因为index.html在app/目录而不是根目录.

app/ |-- index.html |-- scripts/ dist/ Gruntfile.js etc..

我可以告诉github页面从app文件夹加载index.html吗？如何启动带有角度生成器的网站到gh页面？

当我尝试像这样注入"ngAnimate"时,我无法实例化我的应用程序:

var app = angular.module('musicsa', [
  'ngCookies',
  'ngResource',
  'ngSanitize',
  'ui.router',
  'firebase',
  'ngAnimate'
]) 

我Uncaught object从angular.js第78行得到一个错误

我使用bower安装了ngAnimate.这是我的bower.json:

{
  "name": "ang-changeorg",
  "version": "0.0.0",
  "dependencies": {
    "angular": "1.2.6",
    "json3": "~3.2.6",
    "es5-shim": "~2.1.0",
    "jquery": "~1.10.2",
    "bootstrap": "~3.0.3",
    "angular-resource": "1.2.6",
    "angular-cookies": "1.2.6",
    "angular-sanitize": "1.2.6",
    "firebase": "~1.0.11",
    "angularfire": "~0.7.1",
    "spin.js": "~2.0.0",
    "angular-ui-router": "~0.2.10",
    "angular-animate": "~1.2.16"
  },
  "devDependencies": {
    "angular-mocks": "1.2.6",
    "angular-scenario": "1.2.6"
  },
  "resolutions": {
    "angular": "1.2.6"
  }
}

我在我的所有脚本中包含index.html:

<script src="bower_components/jquery/jquery.js"></script>
<script src="bower_components/angular/angular.js"></script>
<script src="bower_components/bootstrap/dist/js/bootstrap.js"></script>
<script src="bower_components/angular-resource/angular-resource.js"></script>
<script src="bower_components/angular-cookies/angular-cookies.js"></script> …

我有一个带有五个计算属性函数的 Vue 实例，它们对不同的值执行相同的操作。我重复了很多次，并且想知道一种更干净的方法来做到这一点，而不需要重复太多。

在 HTML 模板中，我有 5 个输入字段，每个输入字段限制为 25 个字符，我想显示我显示一个字符计数器：

        <div class='field is-grouped'>
        <p class='control is-expanded'>
            <input 
                class="input" 
                placeholder="Trophy engraving line 1 (25 character limit)" 
                v-model='engraving.line1' 
                v-validate="'required'"
                :class="{'input': true, 'is-danger': errors.has('engraving.line1') }" 
                name='engraving.line1'>
        </p>
        <p class='control'>
            <span>{{ line1count }}</span>
        </p>
    </div>

我有五个看起来完全一样的字段，除了它们说engraving.line2, engraving.line3,engraving.line4和engraving.line5。

然后我的组件 javascript 定义了雕刻对象，并对每个字段具有相同的计算方法。

export default {
    data(){
        return {
            engraving: {
                line1: '',
                line2: '',
                line3: '',
                line4: '',
                line5: '',
            }
        };
    },
    computed: {
        line1count() {
            var chars …

我有一个 Laravel Eloquent 查询，我试图从 MySQL 表中选择多个列。

    $query = DB::connection('global')
        ->select(
            'mytable.id',
            'mytable.column1',
            'mytable.another_column',
            'mytable.created_at',
            'myothertable.id
        )
        ->from('mytable')
        ->get();

看起来 select() 函数需要三个参数：query、bindings 和 useReadPdo。上面的查询给了我一个错误：

{"error":true,"message":"Type error: Argument 1 passed to Illuminate\\Database\\Connection::prepareBindings() must be of the type array, string given" }

如何使用 Laravel 查询生成器为上述列编写选择？

我以这种方式构造查询，因为我希望在另一个表之间进行联接，如下所示：

    $query = DB::connection('global')
        ->select(
            'mytable.id',
            'mytable.column1',
            'mytable.another_column',
            'mytable.created_at',
            'myothertable.id
        )
        ->from('mytable')
        ->leftJoin('myothertable', function($join){
           $join->on('mytable.id', '=', 'myothertable.id');
        })
        ->get();

如何使用 Eloquent 查询生成器使用 select 函数跨表抓取多个列？

我按照这个答案在我的应用程序中发布了默认的电子邮件模板：

php artisan vendor:publish --tag=laravel-notifications
php artisan vendor:publish --tag=laravel-mail

这很好用，但显然有一些配置选项，例如：

{{-- Greeting --}}
@if (! empty($greeting))
# {{ $greeting }}
@else
@if ($level === 'error')
# @lang('Whoops!')
@else
# @lang('Hello!')
@endif
@endif

{{-- Salutation --}}
@if (! empty($salutation))
{{ $salutation }}
@else
@lang('Regards'),<br>{{ config('app.name') }}
@endif

现在我的电子邮件正在发送“你好！” 和来自 else 部分的“问候”，但显然有一种方法可以使用变量为电子邮件模板设置这些默认值。发送电子邮件时如何设置$greeting和$salutation变量？

我有一个Laravel 5.5应用程序,具有管理员权限的用户可以上传文件.他们上传文件后我希望他们能够在管理员仪表板中查看该文件.

我有一个DocumentController.php来处理文件上传到本地磁盘:

public function store(Request $request)
{
    // check to make sure user is an admin
    $request->user()->authorizeRoles('admin');

    // validate that the document is a pdf and 
    // that required fields are filled out
    $this->validate($request, [
        'title' => 'required',
        'description' => 'required',
        'user_id' => 'required|exists:users,id', 
        'document_path' => 'required|mimes:pdf'
    ]);

    $file = $request->file('document_path');

    $path = $file->store('documents/' . $request->user_id);

    $document = Document::create([
        'user_id' => $request->user_id,
        'title' => $request->title,
        'description' => $request->description,
        'file_path' => $path
    ]);

    return redirect($document->path());
} 

此方法从表单中获取文件,确保它是pdf,然后将文件保存到storage/app/documents/{user_id} …