ruby-on-rails-4

问题 I've been using the sanitize method in a Rails 4 app to scrub a page which displays html that users generate to prevent unsafe things like script injection. So I have a view that looks like: sanitize @user_input Right now I'm having issues when uses are entering video tags with a source tag under it like so: <video><source src="foo.bar"></video> Unfortunately it looks like sanitize is stripping out the source tag so videos are no longer working. How do I use sanitize so it allows source tags?

问题 Is it possible to use a association in my slug_candidates method? for example, where my model belongs_to :car def slug_candidates [ [car.owner, :horsepower, "horsepower"], [car.owner, car.nickname, :horsepower, "horsepower"] ] end right now it returns NoMethodError: undefined method `owner' for nil:NilClass 回答1: I assume this is a method defined in an ActiveRecord model. It's because one of the records you are using does not have a car (ie. it is nil ). So when you do car.owner on that

问题 For a my application I am trying to upgrade Ruby on Rails from version 3.2.13 to 4.0.0 and I am in trouble when installing / updating some gem (by using the Bundler), specifically the globalize3 gem. I am running Ruby 2.0.0-p247 . Given my Gemfile is: gem 'rails', '4.0.0' gem 'globalize3', github: 'svenfuchs/globalize3', branch: 'rails4' gem 'delayed_job', :git => 'git://github.com/collectiveidea/delayed_job.git', :branch => 'master' gem 'delayed_job_active_record', :git => 'git://github.com

问题 For a my application I am trying to upgrade Ruby on Rails from version 3.2.13 to 4.0.0 and I am in trouble when installing / updating some gem (by using the Bundler), specifically the globalize3 gem. I am running Ruby 2.0.0-p247 . Given my Gemfile is: gem 'rails', '4.0.0' gem 'globalize3', github: 'svenfuchs/globalize3', branch: 'rails4' gem 'delayed_job', :git => 'git://github.com/collectiveidea/delayed_job.git', :branch => 'master' gem 'delayed_job_active_record', :git => 'git://github.com

问题 I'm using jQuery DataTables in a new Rails 4.2 project. I've got a large number of results that need to be filtered on group, project, and status. Choosing the group filters the project selection, via a roundtrip through the application, and the project selection filters the table the same way. I save the group & project in session variables so that, when the user changes pages, then clicks the main link to come back, it will remember their selection, and get them back to where they were.

问题 I'm using jQuery DataTables in a new Rails 4.2 project. I've got a large number of results that need to be filtered on group, project, and status. Choosing the group filters the project selection, via a roundtrip through the application, and the project selection filters the table the same way. I save the group & project in session variables so that, when the user changes pages, then clicks the main link to come back, it will remember their selection, and get them back to where they were.

问题 I have some sporting results that i'd like to loop through and group under dates in a table. For example; |Sat, 20| |Game 1 Results| |Game 2 Results| |Sun, 21| |Game 3 Results| |Sat, 27| |Game 4 Results| My Controller @matches = Match.group([:matchId, 'DATE(matchDate)']).inject([]) do |results, matches| team_names = Match.where(matchId: matches.matchId) results << [matches.id, matches.matchDate, team_names.first.team.name, team_names.last.team.name, team_names.first.points, team_names.last

问题 Using ActiveAdmin with Rails 4, I have two models, Document and Attachment with a one-to-many relationship between them. # models/document.rb class Document < ActiveRecord::Base has_many :attachments accepts_nested_attributes_for :attachments end # models/attachment.rb class Attachment < ActiveRecord::Base belongs_to :document end I registered the models and included permit_params for all the fields in each. Now I used has_many in the form view in the below code. This shows an option to add

问题 Using ActiveAdmin with Rails 4, I have two models, Document and Attachment with a one-to-many relationship between them. # models/document.rb class Document < ActiveRecord::Base has_many :attachments accepts_nested_attributes_for :attachments end # models/attachment.rb class Attachment < ActiveRecord::Base belongs_to :document end I registered the models and included permit_params for all the fields in each. Now I used has_many in the form view in the below code. This shows an option to add

问题 I am new to rails, don't know how to access multiple databases in rails single application. I will try like this config/database.yml default: &default adapter: mysql2 encoding: utf8 pool: 5 username: root password: root socket: /var/run/mysqld/mysqld.sock reconnect: true development: <<: *default database: connection_development <<: *default database: connection_test second database log_database_production: adapter: mysql2 encoding: utf8 pool: 5 host: 192.168.100.97 port: 3306 #ip address of