542 questions
When creating a table in rails such as the following, I always implement it using if statements.*It is written in slimcategories/index.html.slim- if store.categories.present? - store.categories.each d...
Perform the following actions with the following model structure: tweet=Tweet.createuser=User.newuser.likes.build(tweet_id:tweet.id)user.saveThen it becomes Like is invalid and rolls back.When buildin...
I would like to use ruby to process the file with the following coordinates, but I can't think about what to do, so I'm at a standstill.Could you give me an idea?Before Processing group start end id d...
There was a similar question, but there was no answer, so I would like to ask you a question.As the title suggests, we are trying to deploy the Sinatra app using MeCab to Heroku.local PC:Mac OSX $hero...
I am developing it at Ruby on Rails. button_to 'delete', xxxx_path(xxx.id), method: :delete,confirm: 'Do you really want to delete it?'#=><input class=Button data-confirm=Are you sure you want t...
If I'm developing two projects on my PC and I use the same version of rails, installing the same version of rails in the directory of each project is a waste of capacity, but what do you think?
We analyze the parent-child relationship (dependent relationship) on the ER diagram to see if it really is on Ruby's source.However, I don't know how to determine which model is associated with a pare...
capistrano-rbenv was looking at the repository.Therefore, I think this gem is expecting rbenv exec to execute the rails command.On the other hand, I believe that this rbenv exec command does not descr...
I'm creating a website with rails.Among them is the process of parsing JSON.I'm saying this very well, but if you intentionally give me a strange character, I get JSON::ParserError and I get an error ...
bundle exec rubocop seems to be using an older version of rubocop, but how can I use the rubocop managed by the bundleer?$bundle exec rubocop-vwarning: parser/current is loading parser/ruby22, which r...
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