ruby-on-rails-4

问题 Is there a trick required to make Rails recognize constants in a SQL select statement? For example, the following SQL statement is valid: SELECT id, name, 1 AS constant FROM table_name And I would expect the results to have three columns returned: id , name and constant . The value in the constant column would always be 1. However, in Rails if I try to do the same thing the constant column gets dropped using Model.find_by_sql : TableName.find_by_sql("SELECT id, name, 1 AS constant FROM table

问题 Is there a trick required to make Rails recognize constants in a SQL select statement? For example, the following SQL statement is valid: SELECT id, name, 1 AS constant FROM table_name And I would expect the results to have three columns returned: id , name and constant . The value in the constant column would always be 1. However, in Rails if I try to do the same thing the constant column gets dropped using Model.find_by_sql : TableName.find_by_sql("SELECT id, name, 1 AS constant FROM table

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago . i want create reviews for users from users, how better create db and Active Record Associations, i am thinking of create model reviews, reviews table with content string and table users_users with 2 strings user_id, user_id, first string who create review and second for whom

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago . i want create reviews for users from users, how better create db and Active Record Associations, i am thinking of create model reviews, reviews table with content string and table users_users with 2 strings user_id, user_id, first string who create review and second for whom

问题 Why am i getting this error? shibly@mybox:~/blog$ rails server /home/shibly/.gem/ruby/2.2.4/gems/bundler-1.11.2/lib/bundler/runtime.rb:80:in `rescue in block (2 levels) in require': There was an error while trying to load the gem 'uglifier'. (Bundler::GemRequireError) from /home/shibly/.gem/ruby/2.2.4/gems/bundler-1.11.2/lib/bundler/runtime.rb:76:in `block (2 levels) in require' from /home/shibly/.gem/ruby/2.2.4/gems/bundler-1.11.2/lib/bundler/runtime.rb:72:in `each' from /home/shibly/.gem

问题 Why am i getting this error? shibly@mybox:~/blog$ rails server /home/shibly/.gem/ruby/2.2.4/gems/bundler-1.11.2/lib/bundler/runtime.rb:80:in `rescue in block (2 levels) in require': There was an error while trying to load the gem 'uglifier'. (Bundler::GemRequireError) from /home/shibly/.gem/ruby/2.2.4/gems/bundler-1.11.2/lib/bundler/runtime.rb:76:in `block (2 levels) in require' from /home/shibly/.gem/ruby/2.2.4/gems/bundler-1.11.2/lib/bundler/runtime.rb:72:in `each' from /home/shibly/.gem

问题 I'm setting up this app that contains a chat module and everything is working fine on localhost. Now I am trying to connect to the server as a standalone service, but the connection state in the dispatcher is always 'connecting' until it finally times out with the following message: WebSocket connection to 'ws://myserver:3001/websocket' failed: Error in connection establishment: net::ERR_CONNECTION_TIMED_OUT Gemfile gem 'faye-websocket', '0.10.0' gem 'websocket-rails', github: 'moaa/websocket

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I am trying to make a note application in rails 4 and I really do not want to use devise or any any other user authentication system because I would really just like to code it my self. The only problem I have found is that there aren't any good tutorials out there. The tutorials that I have found do not teach

问题 I am using simple_form in rails, and I have this as checkbox: <%= f.input :delivery_days, as: :check_boxes, collection: [ 'Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Satusday', 'All'], wrapper: :vertical_radio_and_checkboxes %> I am not able to get the values of selected checkboxes in my controller. I am using the following code to get it: def user_basic_params logger.info "from user_basic_params" params.require(:profile).permit(:delivery_days[]) end I have other form

问题 I am using simple_form in rails, and I have this as checkbox: <%= f.input :delivery_days, as: :check_boxes, collection: [ 'Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Satusday', 'All'], wrapper: :vertical_radio_and_checkboxes %> I am not able to get the values of selected checkboxes in my controller. I am using the following code to get it: def user_basic_params logger.info "from user_basic_params" params.require(:profile).permit(:delivery_days[]) end I have other form