我正在使用Rails 4.1.1
当我执行命令时 rails g generator my_generator
生成器运行但始终以 error rspec [not found]
我已将rspec和rspec-rails宝石添加到我的Gemfile中。
我想走哪一步呢?
我是 NodeJS 和异步编程的新手。我使用express作为我的应用程序的基础,实际上只有一个路由服务页面并接受从表单上传的内容。我想在文件上传后向外部服务发出 POST 请求。然而,尝试在 res.send(200) 之后执行任何代码会导致以下错误消息Error: Can't set headers after they are sent.
我正在使用请求包将帖子发送到外部服务。
var express = require('express');
var router = express.Router();
var util = require("util");
var request = require("request");
/* POST uploads. */
router.post('/', function(req, res, next) {
console.log("LOG:" + util.inspect(req.files));
res.send('respond with a resource');
postFile(req.files.file.path);
});
var postFile = function(path) {
var opts = {
method: 'POST',
uri: 'https://example.com/api/files.upload',
formData: {
token: "xxx",
file: fs.createReadStream(req.files.file.path)
}
}
// console.log("LOG:\n" + util.inspect(opts));
request.post(opts, function(error, response, …Run Code Online (Sandbox Code Playgroud) 我需要为我的应用程序创建一个具有一些属性和方法的类,我应该在哪里将类文件存储在 ruby on rails 应用程序中?
我的控制器类声明后,我有以下代码
before_filter :load_form, :except => [:create, :update, :delete]
after_filter :load_form, :only => [:create, :update, :delete]
def load_form
@severities = Severity.all
@severity = Severity.new
end
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当页面加载得很好时,我得到严重性列表,这意味着before_filter正在工作.但是在调用诸如创建严重性列表之类的方法后,总是会返回为零.我想我可能只是遗漏了一些关于过滤器的基本信息.任何人都可以帮助我理解为什么after_filter不起作用?
我有一个像http://example.com/?sort=pop这样的网址
在我看来,我正在使用 link_to category.name, categories_path(category)
如何保留请求URL上可能已存在的任何查询字符串参数?
因此,最终的链接网址为http://example.com/categories/1?sort=pop
我安装了RVM,然后安装了最新版本的Ruby.现在当我尝试生成一个新的rails应用程序时,我收到以下错误消息.
NOTE: Gem::Specification#default_executable= is deprecated with no replacement. It will be removed on or after 2011-10-01.
Gem::Specification#default_executable= called from /Users/local/.rvm/gems/ruby-1.9.2-p180@global/specifications/rake-0.8.7.gemspec:10.
NOTE: Gem::Specification#default_executable= is deprecated with no replacement. It will be removed on or after 2011-10-01.
Gem::Specification#default_executable= called from /Users/local/.rvm/gems/ruby-1.9.2-p180/specifications/rake-0.8.7.gemspec:10.
NOTE: Gem::Specification#default_executable= is deprecated with no replacement. It will be removed on or after 2011-10-01.
Gem::Specification#default_executable= called from /Users/local/.rvm/gems/ruby-1.9.2-p180/specifications/rubygems-update-1.8.1.gemspec:11.
/Library/Ruby/Site/1.8/rubygems/dependency.rb:247:in `to_specs': Could not find rails (>= 0) amongst [rake-0.8.7, rake-0.8.7, rubygems-update-1.8.1] (Gem::LoadError)
from /Library/Ruby/Site/1.8/rubygems/dependency.rb:256:in `to_spec'
from /Library/Ruby/Site
/1.8/rubygems.rb:1182:in `gem'
from /usr/bin/rails:18 …Run Code Online (Sandbox Code Playgroud) 我有一个小的测试应用程序使用NightmareJS作为PhantomJS的包装我想测试元素是否存在类.我有这个代码:
new Nightmare()
.goto(baseURL)
.evaluate(function() {
return document.querySelector('body');
}, function(element) {
element.className.should.equal(expected)
callback();
})
.run();
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如何将参数传递给querySelector方法而不是对代码进行硬编码?
我试过了
var tag = body;
new Nightmare()
.goto(baseURL)
.evaluate(function() {
return document.querySelector(tag);
}, function(element) {
element.className.should.equal(expected)
callback();
})
.run();
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但是,PhantomJS始终返回一个无法找到变量的错误.
如何将变量参数传递给querySelector方法?
我想知道Ruby on Rails是否有一种优雅的方式来显示条件样式表,还是我需要使用默认值
<!--[if IE 7]>
<link rel="stylesheet" href="css/ie7.css" type="text/css" media="screen" />
<![endif]-->
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