Recent questions tagged Ruby

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ruby - How do I return early from a rake task?

I have a rake task where I do some checks at the beginning, if one of the checks fails I would ... get the following error unexpected return See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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452 views

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ruby - What is a flip-flop operator?

I have heard and read about flip-flops with regular expressions in Perl and Ruby recently, but I was unable to ... is a flip-flop operator? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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679 views

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ruby on rails - How to query records that have an ActiveStorage attachment?

Given a model with ActiveStorage class User has_one_attached :avatar end I can check whether a single user has an ... where is this documented? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - PG::InvalidParameterValue: ERROR: invalid value for parameter "client_min_messages": "panic"

rake db:create showing error PG::InvalidParameterValue: ERROR: invalid value for parameter "client_min_messages": " ... in macOS Catalina See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - Rails article helper - "a" or "an"

Does anyone know of a Rails Helper which can automatically prepend the appropriate article to a given string? For ... answer to search for... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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455 views

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ruby on rails - Testing Rack Routing Using rSpec

I have a rule in my routes.rb: constraints AssetRestrictor do match '*seopath' => SeoDispatcher end Then in lib/ ... /foo/bar"}}). Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - Offline gem dependencies

Unfortunately, when I am at work I am developing on a network that can in no way be connected to the ... file behind once it is installed. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - Changing table name at query run time in a Rails application

I have a fat multi-tenant Rails app on Apache + mod_passenger that outputs product prices from a PostgreSQL ... for any feedback/thoughts! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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873 views

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ruby on rails - Spring and middleware conflict?

I'm trying to add oauth2 with Google, following these instructions. I'm receiving the following error message ... "spring already present"). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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512 views

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ruby - Sass/Compass compile into many locations

I'm using Sass 3.1.10 with Compass 0.11.5. I need to compile my compass project into many diffrent ... = :compressed preferred_syntax = :sass See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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819 views

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ruby on rails - How can i include image into CSV

In my Rails application Admin can export the user data into csv format. Every user in my application has ... disposition => 'attachment' end See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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441 views

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ruby - ERROR: While executing gem ... (Zlib::GzipFile::Error) not in gzip format

I am developing a Sencha touch 2 application. I have been following the "Styling the user interface of a Sencha ... that results in an error. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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699 views

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ruby on rails 3 - carrierwave + mini_magick gems = not an image error

I'm using: - carrierwave 0.6.0 - rails 3.2.1 - mini_magick 3.4 - ruby 1.9.2p290 And during image ... required when using mini_magick as a gem?) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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395 views

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ruby - An algorithm for converting a base-10 number to a base-N number

I am looking for a way to convert a base-10 number into a base-N number where N can be large. ... 12] Any ideas are appreciated! Roja See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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682 views

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ruby on rails - How do you reference only the persisted records in an active record association

In the edit method of many controllers you initialize a new object and edit existing objects class MagazinesController < ... way of doing this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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406 views

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ruby on rails - Getting uninitialized constant error when trying to run tests

I just updated all my gems and I'm finding that I'm getting errors when trying to run Test:: ... " "test/functional/users_controller_test.rb" See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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570 views

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ruby - 301 Moved Permanently after S3 uploading

Im trying to upload images to S3 on Ruby on Rails using carrierwave and fog gems, images are uploaded ... 'fog' gem 'carrierwave_direct' See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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802 views

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ruby on rails - On Migration: undefined method `to_sym' for nil:NilClass

I'm running Rails 3.0.3 and I accidentally made a typo in my migration: I created a migration that creates ... into the database by hand)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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444 views

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ruby on rails - pg gem '0.14.0' on Mountain Lion fails

I just upgraded from OS X Lion to OS X Mountain Lion. My rails environment for the most part stayed in tact. The ... /pg-0.14.0 for inspection. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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778 views

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ruby on rails - create with has_many through association gets NoMethodError (undefined method `name' for nil:NilClass)

I'm doing this tutorial and am stuck in the Tagging part. Basically I have articles that can have a list of tags. ... bin/rails:4:in `<main>' See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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574 views

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ruby - Safe navigation operator (&.) for nil

As Ruby 2.3 introduces the Safe navigation operator(&.), a.k.a lonely operator, the behavior on nil object ... when adding the lonely operator? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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426 views

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ruby - Constructor overriding

I have a class: class One def initialize; end end I need to create a new class with my own constructor like ... (1 for 0) (ArgumentError) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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448 views

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ruby - How can I push to Faye Server from Rails Controller?

I have this code: def create message = Message.new(text: params[:message][:text], author: params[: ... EventMachine on a different thread? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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421 views

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ruby on rails - how to customize the table builder plugin for a week calendar?

I'm using a table builder https://github.com/p8/table_builder for a calendar that I found in this Rails cast: ... month]) : Date.today end end See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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540 views

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ruby - jekyll serve dependency error - Could not open 'lib curl'

I am trying to run bundle exec jekyll serve but it comes up with the error: Dependency Error: Yikes! ... Any suggestions would be appreciated! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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508 views

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ruby on rails - Render three different partials depending on button clicked

So I have a layout like this: home/index.html.erb: <div class="optionscontainer btn-group btn-group- ... the stories button nothing renders? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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508 views

1 answer

ruby on rails - Installing MySQL2 Gem on Windows

I was having some issues getting the mysql2 gem to install on my Windows 8.1 machine. I followed the ... do Ruby on Rails development. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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445 views

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ruby on rails - Getting "Must issue a STARTTLS command first" when trying to send email

I'm getting an error while trying to use the action_mailer_tls plugin to communicate with Gmail in my Rails app ... Gmail would be appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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