Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Login
Remember
Register
Ask
Q&A
All Activity
Hot!
Unanswered
Tags
Users
Ask a Question
Ask a Question
Categories
All categories
Topic[话题] (13)
Life[生活] (4)
Technique[技术] (2.1m)
Idea[创意] (3)
Jobs[工作] (2)
Others[杂七杂八] (18)
Code Example[编程示例] (0)
Recent questions tagged ruby
0
votes
466
views
1
answer
ruby on rails - What's the difference between belongs_to and has_one?
What is the difference between a belongs_to and a has_one? Reading the Ruby on Rails guide hasn't helped me. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
549
views
1
answer
ruby on rails - Add a default value to a column through a migration
How do I add a default value to a column that already exists through a migration? All the documentation I can find ... but in this case it does. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
734
views
1
answer
ruby on rails f.select options with custom attributes
I have a form select statement, like this: = f.select :country_id, @countries.map{ |c| [c.name, c.id] } ... ="YYY">Argentina</option> ... See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
370
views
1
answer
ruby - Why isn't the eigenclass equivalent to self.class, when it looks so similar?
I've missed the memo somewhere, and I hope you'll explain this to me. Why is the eigenclass of an ... sneaky trick of Ruby meta-programming? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
449
views
1
answer
ruby - When should I use Struct vs. OpenStruct?
In general, what are the advantages and disadvantages of using an OpenStruct as compared to a Struct? What type of ... would fit each of these? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
607
views
1
answer
ruby - How can I install a local gem?
If I download a .gem file to a folder in my computer, can I install it later using gem install? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
582
views
1
answer
ruby on rails - Float vs Decimal in ActiveRecord
Sometimes, Activerecord data types confuse me. Err, often. One of my eternal questions is, for a given case, Should ... know which type to use? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
430
views
1
answer
ruby - What's the best way to model recurring events in a calendar application?
I'm building a group calendar application that needs to support recurring events, but all the solutions I've come up ... that's good to know.) See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
530
views
1
answer
ruby on rails - How to match accented characters with a regex?
I am running Ruby on Rails 3.0.10 and Ruby 1.9.2. I am using the following Regex in order to match names: NAME_REGEX = / ... è, é, ì, ò, ù, ...? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
513
views
1
answer
ruby - Using WWW:Mechanize to download a file to disk without loading it all in memory first
I'm using Mechanize to facilitate the downloading of some files. At the moment my script uses the following ... Mechanize's cookies with it? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
1.0k
views
1
answer
ruby on rails - How can I remove a default gem? ! want to uninstall a gem 1.7.7 version of json
I have the same rails app in OSX and Ubuntu, I want to use Zeus to speed up my rspec. In Ubuntu, Zeus ... a default gem What should I do? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
325
views
1
answer
ruby on rails - Uploading multiple files with paperclip
I am having problems uploading multiple files using paper clip, my models are as such slider has_many ... Cancel', slider_index_path %> See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
406
views
1
answer
ruby - Why use "self" to access ActiveRecord/Rails model properties?
Throughout my application self. is not necessary to refer to a User's name. name works fine. Why does the following ... is given. Rails 3.0.7. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
453
views
1
answer
ruby on rails - How to delete duplicate records in mysql database?
What's the best way to delete duplicate records in a mysql database using rails or mysql queries? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
474
views
1
answer
ruby on rails - Rspec and named routes
I'm quite new to rails, and trying to follow the railstutorial. Everything goes fine, except for my tests which can' ... and didn't find any ^^' See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
348
views
1
answer
ruby - Where is the Rails method that converts data from `datetime_select` into a DateTime object?
When I use <%= f.datetime_select :somedate %> in a form, it generates HTML like: <select id="some_date_1i" ... a solution to that other problem. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
358
views
1
answer
ruby - How can I capture STDOUT to a string?
puts "hi" puts "bye" I want to store the STDOUT of the code so far (in this case hi bye into a variable ... " line should give me hi and bye. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
463
views
1
answer
ruby on rails 3 - Does accepts_nested_attributes_for work with belongs_to?
I have been getting all kinds of conflicting information regarding this basic question, and the answer is pretty ... city f.submit "Submit" See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
598
views
1
answer
ruby on rails - Undefined method raise_in_transactional_callbacks=' for ActiveRecord::Base:Class (NoMethodError)
Before writing this question I looked at these answers, but was unable to find a solution.: Error when execute ... be grateful for any help! See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
399
views
1
answer
ruby on rails - counter_cache with has_many :through
I just created a counter_cache field and the controller looks like this. @users = User.where(:sex => 2) ... , :counter_cache => :received_likes See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
539
views
1
answer
ruby - How to get a Date from date_select or select_date in Rails?
Using select_date gives me back a params[:my_date] with year, month and day attributes. How do get a Date ... use date_select instead as well. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
858
views
1
answer
ruby on rails - Sass::SyntaxError: File to import not found or unreadable: bootstrap-sprockets
I am suddenly getting this error in development and in production on deployment. custom.css.scss ... 20141001060418/vendor/assets/stylesheets See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
1.5k
views
1
answer
ruby - Gem installation error: You have to install development tools first
I tried installing the gem 'sinatra-websocket', but when I ran gem install sinatra-websocket, I got this error... ... .", but is that relevant? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
450
views
1
answer
ruby - Safe ActiveRecord like query
I'm trying to write LIKE query. I read that pure string quires aren't safe, however I couldn't find ... I manually defend against SQL Injection? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
398
views
1
answer
ruby - How to deal with the sum of rounded percentage not being 100?
Suppose we have a list of items with an integer: USA: 3 people Australia: 2 people Germany: 2 people If we ... How would you solve this problem? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
436
views
1
answer
ruby on rails - exif image rotation issue using carrierwave and rmagick to upload to s3
I've got a photo upload feature in my rails app. The app uploads direct to s3 through carrierwave via rmagick ... for setting up my s3 upload. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
446
views
1
answer
ruby on rails - Visit method not found in my rspec
My java web application is running on tomcat at http://localhost:8080/ Writing my first spec, home_spec: ... : require 'capybara/rspec' See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
0
votes
530
views
1
answer
ruby on rails - link_to :confirm displays popup twice
This tag with rails 3 <%= link_to 'Destroy', item, :method => :delete,:confirm=>'Are you sure?' %> ... twice. What could be causing this? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ruby
Page:
« prev
1
...
73
74
75
76
77
78
79
80
81
82
83
...
121
next »
Ask a question:
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question
Just Browsing Browsing
[1] 有没有能够直接上传markdown文件作为博文的开源博客?
[2] springboot 跳转页面问题
[3] java 超长字符串存取
[4] python 3.x - How to manipulate nested GET calls
[5] VueAwesomeSwiper?初始化?swiperOption?后,?如何点击修改?slidesPerView
[6] python - Deleting a figure generated by canvas in tkinter
[7] NGINX Avoid Proxy Pass Duplication for Multiple Locations
[8] android - Inject Interface with Generics in Hilt
[9] 给div设置heigth=72,打开F12查看属性显示height=72,但是鼠标选中显示height=64,如下图
[10] 三维动画师和程序员的职业前景 thingjs 三维可视化
2.1m
questions
2.1m
answers
60
comments
57.0k
users
Most popular tags
javascript
python
c#
java
How
android
c++
php
ios
html
sql
r
c
node.js
.net
iphone
asp.net
css
reactjs
jquery
ruby
What
Android
objective
mysql
linux
Is
git
Python
windows
Why
regex
angular
swift
amazon
excel
algorithm
macos
Java
visual
how
bash
Can
multithreading
PHP
Using
scala
angularjs
typescript
apache
spring
performance
postgresql
database
flutter
json
rust
arrays
C#
dart
vba
django
wpf
xml
vue.js
In
go
Get
google
jQuery
xcode
jsf
http
Google
mongodb
string
shell
oop
powershell
SQL
C++
security
assembly
docker
Javascript
Android:
Does
haskell
Convert
azure
debugging
delphi
vb.net
Spring
datetime
pandas
oracle
math
Django
联盟问答网站-Union QA website
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
广告位招租
...