Recent questions tagged Ruby

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ruby - ActiveRecord::AdapterNotSpecified database configuration does not specify adapter

When I use heroku open my web app works fine but when I'm using rails s (localhost) I am running into this ... ', group: [:development, :test] See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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490 views

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ruby 1.9 + sinatra incompatible character encodings: ASCII-8BIT and UTF-8

I'm trying to migrate a sinatra application to ruby 1.9 I'm using sinatra 1.0, rack 1.2.0 and erb ... not fully compatible with ruby 1.9? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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379 views

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ruby on rails - Why Doesn't My Cron Job Work Properly?

I have a cron job on an Ubuntu Hardy VPS that only half works and I can't work out why. The job is a ... could be causing the cron job to fail? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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580 views

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ruby on rails - Errno::ENOENT: No such file or directory @ rb_file_s_mtime after feature tests

When running feature Rspecs, I receive the following error (full trace at the bottom of this message) Puma output Rack app error ... in `call' # /opt/rbenv/versions/2.5.3/lib/ruby...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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439 views

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ruby on rails - data-remote true defining a callback

I have a form that I would like to submit with the data-remote=true option. But I want to have my create ... success => "my_js_stuff" do |f| See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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514 views

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ruby on rails - HABTM and accepts_nested_attributes_for

Say I have two models, Book and Author with a has_and_belongs_to_many relationship between them. What I want to do ... solution for Rails 3. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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662 views

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ruby on rails - Mysql::Error: Specified key was too long; max key length is 767 bytes: CREATE INDEX

I'm working with rails 2.3.5 application, in witch I have this field t.string "trip_cities", :limit => 256 ... t quite know how to resolve this. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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545 views

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ruby on rails - AWS S3, Paperclip missing required :bucket option

I'm trying to use Paperclip and SWS S3 on Heroku to let users upload images. I do not have my credentials ... pretty easy. Thanks in advance. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - ERROR: Error installing ffi: ERROR: Failed to build gem native extension

Got the DevKit installed and re-ran the ffi install .got this as an output: C:Documents and Settings****** ... with this issue. Kindly help. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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434 views

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ruby on rails - default_scope and associations

Suppose I have a Post model, and a Comment model. Using a common pattern, Post has_many Comments. If Comment has ... way to pull ALL comments? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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361 views

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ruby - Why doesn't MiniTest::Spec have a wont_raise assertion?

Ruby's Test::Unit has assert_nothing_raised. Test::Unit has been replaced by MiniTest. Why don't MiniTest's ... must_raise but not wont_raise. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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504 views

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ruby on rails - Cucumber / Capybara -- how to get the host and port of the current execution

I need to download a csv file from my app using Open::URI and to do that I need to give it a fully ... ? Note I am using Capybara and Selenium See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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315 views

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ruby - Why does code need to be reloaded in Rails 3?

I am a former PHP developer learning Rails and Sinatra. In PHP, every page request loaded all of ... book.gittr.com/#automatic_code_reloading)? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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293 views

1 answer

ruby - Change indentation in Sass

How can I change indentation from 2 spaces to 4 spaces in output CSS files when using Sass? I'm using expanded style. ... 3.2.1/ on my computer. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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657 views

1 answer

ruby on rails - How to iterate ActiveRecord Attributes, including attr_accessor methods

I've looked everywhere for an elegant solution. The essential problem seems to be that ActiveRecord attributes that map ... way to do it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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601 views

1 answer

ruby - Regex match unescaped quotes

I'm looking for a regex that matches unescaped quotes in an arbitrary string, but not quotes that are already ... want to do this in ruby See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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431 views

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ruby on rails - Store the day of the week and time?

I have a two-part question about storing days of the week and time in a database. I'm using Rails 4. ... Any suggestions would be super helpful. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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539 views

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ruby on rails - Rspec Controllers in and out of namespace with same name

I have the following setup: class UsersController < ApplicationController ... end class Admin::BaseController < ... in different namespaces? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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630 views

1 answer

ruby on rails - Carrierwave upload with nested forms?

Not sure what's going on here, but I think my nested form partials are causing a problem for CarrierWave. When ... in the filesystem. Any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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755 views

1 answer

ruby on rails - Removing accents/diacritics from string while preserving other special chars (tried mb_chars.normalize and iconv)

There is a very similar question already. One of the solutions uses code like this one: string.mb_chars.normalize(: ... : "é" Help please? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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352 views

1 answer

ruby on rails - Running into SMTP error when trying to send email in RoR app

I've been desperately trying to send an email using the Action Mailer class in RoR, and even though the terminal ... can solve this issue!!! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

417 views

1 answer

ruby on rails - Add "# coding: utf-8" to all files

Can I somehow configure Rails to avoid the need to add # coding: utf-8 to all files? Or must I add it to ... -8BIT after I upgraded to Rails 3? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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423 views

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ruby triple equal

Let's say that I have following code. result = if a.is_a?(Class) && a <= Exception a.name elsif . ... Do I understand triple equal correctly? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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614 views

1 answer

ruby on rails - Pass Parameters in Link_to

I would like to pass a parameter through a link_to method in Rails. I know there is a way to do it via ... Is there something similar in Rails? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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316 views

1 answer

ruby - Split string into a list, but keeping the split pattern

Currently i am splitting a string by pattern, like this: outcome_array=the_text.split(pattern_to_split_by) The ... split pattern itself? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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339 views

1 answer

ruby on rails - why do I get uninitialized constant Devise name Error when running webrick server?

In my application I have used ruby 1.9.2 and rails 3.0.3 and have also installed Devise gem.The problem ... .rb:35:in `require' Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

413 views

1 answer

ruby - Looping through an array with step

I want to look at every n-th elements in an array. In C++, I'd do this: for(int x = 0; x<cx; x+=n ... be a better (more Ruby) way of doing this. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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597 views

1 answer

ruby - Why can't singleton methods be defined on Symbols or Fixnums?

There are a some Ruby classes that don't allow singleton methods to be defined on their instances. For example, ... of objects but not others. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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