Recent questions tagged Ruby

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ruby on rails - Installing pg gem; ERROR: Failed to build gem native extension

After updating to OS X 10.9 Mavericks I tried to start a Rails 3 app, but the connection to the PG database was ... Do you know how to fix it? See Question&Answers more detail:os...

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

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1.5k views

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ruby - Undefined instance method "respond_to" in Rails 5 API Controller

In rails 5 created with --api I have an error NoMethodError (undefined method `respond_to' for #<Api::MyController: ... : "fdsfdsfd" ) } 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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562 views

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ruby - Parse CSV file with header fields as attributes for each row

I would like to parse a CSV file so that each row is treated like an object with the header-row being the ... a bit more readable. Any ideas? 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 - header and footer in Prawn PDF

I have read through all relevant posts on Prawn but found no mentioning (even in Prawn's own documentation) of ... in your bills pages. 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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709 views

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ruby - How to remove installed ri and rdoc?

How can I remove the ri and rdoc of installed gems? 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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605 views

1 answer

ruby - How to pass parameter on 'vagrant up' and have it in the scope of Vagrantfile?

I'm looking for a way to pass parameter to Chef cookbook like: $ vagrant up some_parameter And then use ... one of the Chef cookbooks. See Question&Answers more detail:os...

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

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704 views

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ruby on rails - How to detect attribute changes from model?

I'd like to create a callback function in rails that executes after a model is saved. I have this model, ... before the change within the model? See Question&Answers more detail:os...

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

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546 views

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ruby - Undo scaffolding in Rails

Is there any way to 'undo' the effects of a scaffold command in Rails? See Question&Answers more detail:os...

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

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970 views

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ruby on rails - get driving distance between two longitude latitude points

I am trying to get driving distance between two longitude latitude points on rails, geocoder or any other efficient way.. Is there? See Question&Answers more detail:os...

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

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615 views

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ruby on rails - Slow Page load on heroku

I have a rails 4 app on heroku. I'm relatively new to both. Every page I load or ajax I execute takes 1 minute ... and how do I stop it? 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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457 views

1 answer

ruby on rails - Using API calling account as receiver account

I'm trying to integrate Paypal Adaptive checkout using Active Merchant and active_paypal_adaptive_payment gem. During ... will 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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576 views

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ruby on rails - Using OR with queries in a scope

In Rails3 I have: Class Teacher # active :boolean has_and_belongs_to_many :subjects Class Subject # active :boolean ... {active: true}) See Question&Answers more detail:os...

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

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874 views

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ruby - PostgreSQL Permission denied Error on Unix domain socket "/var/pgsql_socket/.s.PGSQL.5432" - Lion Server 10.7.3 or Lion Server 10.7.4

I recently had major permission problems using Lion Server where permissions would change on folders at will. During ... to look for solutions. See Question&Answers more detail:os...

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

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520 views

1 answer

ruby - How to make 'whenever' gem work on Windows?

I wan to run "simple" cron using whenever on Windows XP. So I installed whenever gem install whenever and then ran my ... 1.3) whenever (0.6.8) See Question&Answers more detail:os...

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

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945 views

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ruby on rails - undefined method `fetch_value' for nil:NilClass when using Roo

I am trying to use Roo to import data from an Excel spreadsheet into a table (data_points) in a Rails app. ... Thanks in advance for any help! See Question&Answers more detail:os...

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

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712 views

1 answer

ruby on rails - ActiveRecord :inverse_of does not work on has_many :through on the join model on create

I can't get inverse_of to work on join models on creation. I'm not sure if this is a bug or just not ... or rather a bug in the implementation? See Question&Answers more detail:os...

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

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604 views

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ruby on rails - Why can't I use a param called "action"?

Is "action" as a input field name forbidden? Because everything works except the assignment of the "action" param. See Question&Answers more detail:os...

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

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1.7k views

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ruby on rails - Uninitialized constant "Controller Name"

I'm having an error with my routes/resources and controllers. I have the following in the routes.rb: # routes.rb ... linking to my 'new' view. See Question&Answers more detail:os...

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

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709 views

1 answer

ruby on rails - Using $ sudo bundle exec ... raises 'bundle: command not found' error

I have installed rbenv on an Ubuntu sever. I can cd into my application directory and run $ bundle without issue, ... and how can I fix it? See Question&Answers more detail:os...

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

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799 views

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ruby on rails - How add style="background-image in element div using asset pipeline?

In the folder assets/images/default/user I stored an image banner.png. How can I add this image direct in the ... /banner.png');"></div> See Question&Answers more detail:os...

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

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653 views

1 answer

ruby on rails - Timezone from geolocation

I have a geolocation pair latitude/longitude, is there any way/tool to get the corresponding time zone? See Question&Answers more detail:os...

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

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801 views

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ruby on rails - solr sunspot - searching belongs_to association

I have a fabrics model that belongs to multiple other tables. class Fabric < ActiveRecord::Base validates : ... @fabrics = @search.results Ross See Question&Answers more detail:os...

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

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673 views

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ruby on rails - Nested paperclip form with multiple images

I have a one-to-many association between a Banana model and an Image model. In addition, each Banana and Image ... : [:img]) 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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576 views

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ruby - New Rails Project: 'bundle install' can't install rails in gemfile

I have installed a new rails project like so: $ rails new site and it executes and reaches: bundle install ... help would be much 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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963 views

1 answer

ruby - How to dump strings in YAML using literal scalar style?

I have a big string of formatted data (e.g. JSON) that I want to dump to YAML using Psych in ruby ... be output using literal style in YAML. See Question&Answers more detail:os...

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

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1.2k views

1 answer

ruby - How do I use savon nested attributes! hash?

I'm looking at using Ruby savon for SOAP. For purely masochistic reasons I have to deal with SOAP elements having ... id=44></address></person> See Question&Answers more detail:os...

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

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667 views

1 answer

ruby on rails - rails3 bigint primary key

I would like to create a bigint (or string or whatever that is not int) typed primary key field under Rails 3. ... is the case for MySQL too. See Question&Answers more detail:os...

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

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602 views

1 answer

ruby on rails - How do I escape #{ from string interpolation

I have a heredoc where I am using #{} to interpolate some other strings, but there is an instance where I ... => " development #{RAILS_ENV} " See Question&Answers more detail:os...

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

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