我mongo_mapper在Rails中使用MongoDB和gem,项目足够大.有什么办法可以将数据从Mongoid迁移到Postgresql吗?
我试图使用rails 4.0.0与mongo_mapper 0.12.0并获取该消息
Bundler could not find compatible versions for gem "activesupport":
In Gemfile:
mongo_mapper (~> 0.12.0) ruby depends on
activesupport (~> 3.0) ruby
rails (= 4.0.0) ruby depends on
activesupport (4.0.0)
Run Code Online (Sandbox Code Playgroud)
Rails 4和mongo_mapper仍然不兼容?
尝试使用carrierwave删除上传的图像
<%= f.fields_for :images do |ff| %>
<div class="form-group">
<label>
<%= ff.check_box :remove_image %>
<%= image_tag ff.object.image %>
</label>
</div>
<% end %>
Run Code Online (Sandbox Code Playgroud)
在控制器中获取此类参数
"images_attributes"=>{"0"=>{"remove_image"=>"0", "id"=>"13"}, "1"=>{"remove_image"=>"1", "id"=>"14"}, "2"=>{"remove_image"=>"0", "id"=>"15"}, "3"=>{"remove_image"=>"0", "id"=>"16"}, "4"=>{"remove_image"=>"0", "id"=>"17"}, "5"=>{"remove_image"=>"0", "id"=>"18"}}}
Run Code Online (Sandbox Code Playgroud)
但是当用这些参数更新一个对象时什么也没有发生,我错过了什么?
更新
def update
@country = Country.find(params[:id])
if @country.update(country_params)
flash[:notice] = 'Country is successfully updated.'
redirect_to edit_admin_country_path
else
flash[:error] = @country.errors.full_messages[0]
render 'edit'
end
end
def country_params
permitted = [{images_attributes: ["image", "@original_filename", "@content_type", "@headers", "_destroy", "id", "remove_image"]}]
params.require(:country).permit(*permitted)
end
class Country < ActiveRecord::Base
has_many …Run Code Online (Sandbox Code Playgroud) 我正在使用Yard生成文档,但即使在我运行时yardoc --private,它也没有显示源中私有方法的文档.
怎么了?
我需要在C#中实现Single Scale retinex和多尺度retinex算法,
我搜索了一下但是找不到任何有用的练习项目和代码的艺术
我正确理解我应该:
此代码无法正常工作
public static Image<Bgr, byte> SingleScaleRetinex(this Image<Bgr, byte> img, int gaussianKernelSize, double sigma)
{
var radius = gaussianKernelSize / 2;
var kernelSize = 2 * radius + 1;
var ycc = img.Convert<Ycc, byte>();
var sum = 0f;
var gaussKernel = new float[kernelSize * kernelSize];
for (int i = -radius, k = 0; i <= radius; i++, k++)
{
for …Run Code Online (Sandbox Code Playgroud) 我无法2016-10-17T00:00:00.000+00:00使用 format 为 datetimepicker设置初始值MMMM DD, YYYY。
http://jsfiddle.net/0Ltv25o8/3753/
我怎样才能做到这一点?
css twitter-bootstrap-3 bootstrap-datepicker eonasdan-datetimepicker
我正在使用设计进行身份验证,在注册后设计自动登录,我只需要注册但不能登录.有类似的问题链接,但它没有帮助我
我正在使用factory_girl_rails和rspec并遇到麻烦,引发了以下错误
1) WebsiteLink when link is external
Failure/Error: website_link.external should be false
expected #<FalseClass:0> => false
got #<WebsiteLink:100584240> => #<WebsiteLink id: nil, website_id: nil, link: nil, external: nil, checked: nil, click_count: nil, transition_count: nil, created_at: nil, updated_at: nil, link_description: nil>
Compared using equal?, which compares object identity,
but expected and actual are not the same object. Use
`expect(actual).to eq(expected)` if you don't care about
object identity in this example.
Run Code Online (Sandbox Code Playgroud)
这是我在spec.rb文件中的代码
it "when link is external" do
website = FactoryGirl.create(:website,site_address: "www.socpost.ru") …Run Code Online (Sandbox Code Playgroud) 尝试更新 current_user
\n但在递减计数器属性并收到验证错误后无法保存,最小密码长度为 6 个字符 \xe2\x80\x93
current_user.crawl_counter -= 1\ncurrent_user.save!\nRun Code Online (Sandbox Code Playgroud)\n\n更新:
\n\nclass User < ActiveRecord::Base\n devise :database_authenticatable, :registerable,\n :recoverable, :rememberable, :trackable, :validatable\n\n attr_accessible :email, :password, :password_confirmation, :remember_me, :crawl_counter\n PASSWORD_REGEX = /^[a-zA-Z\\d]*$/\n validates :password, format: { with: PASSWORD_REGEX, :message => I18n.t('errors.messages.password_invalid') }\nend\nRun Code Online (Sandbox Code Playgroud)\n devise ×2
mongodb ×2
mongomapper ×2
.net ×1
c# ×1
carrierwave ×1
css ×1
factory-bot ×1
image ×1
postgresql ×1
rspec ×1
yard ×1