Ruby version conflicts in “rails c / s” commands

Question

I have installed all the gems in my existing ruby on rails project. But when the time I tried to run the application it always complaining the following.

efuturess-mbp:Actionrev-average-costing efutures$ rails c
Your Ruby version is 2.3.7, but your Gemfile specified 2.3.5
efuturess-mbp:Actionrev-average-costing efutures$ rbenv install 2.3.5
rbenv: /Users/efutures/.rbenv/versions/2.3.5 already exists
continue with installation? (y/N) 

This is my GEM file.

source "https://rubygems.org"

ruby "2.3.5"

git_source(:github) do |repo_name|
  repo_name = "#{repo_name}/#{repo_name}" unless repo_name.include?("/")
  "https://github.com/#{repo_name}.git"
end

gem "RedCloth", "~> 4.2.9"
gem "active_shipping", "~> 1.7"
gem "activerecord-import"
gem "apartment"
gem "carrierwave"
gem "email_validator"
gem "flutie"
gem "googlecharts", "~> 1.6.8"
gem "mini_magick", "~> 3.8.1"
gem "mysql2", "~> 0.3.21"
gem "neat", "~> 2.1.0"
gem "net-ssh"
gem "normalize-rails", "~> 3.0.0"
gem "omniauth-stripe-connect", "~> 2.9"
gem "pikaday-gem"
gem "pothoven-attachment_fu"
gem "prawn"
gem "prawn-table"
gem "puma_worker_killer"
gem "rack-cors", require: "rack/cors"
gem "rack-mini-profiler", "~> 0.10.1"
gem "rack-rewrite", "~> 1.5"
gem "rails", "~> 5.1.5"
gem "recipient_interceptor"
gem "rollbar", "~> 2.12"
gem "simple_form", "~> 3.2"
gem "stripe", "~> 1.41"
gem "sucker_punch"
gem "will_paginate", "~> 3.0.7"
gem "xmlrpc"
gem "bootstrap-sass"
gem "coffee-rails", "~> 4.2"
gem "fog", require: "fog/aws/storage"
gem "fog-aws", "<= 0.1.1", require: false
gem "jbuilder", "~> 2.5"
gem "jquery-rails"
gem "jquery-ui-rails"
gem "memory_profiler"
gem "puma", "~> 3.7"
gem "rails-jquery-autocomplete"
gem "record_tag_helper", "~> 1.0"
gem "sass-rails", "~> 5.0"
gem "therubyracer", platforms: :ruby
gem "uglifier", ">= 1.3.0"

gem "bootstrap-datepicker-rails"
gem "american_date"

I cannot figure out why this is happening like this. If someone can help me to sort out this that would be really helpful.

Answer 1

It's very clear in the error message. Your problem is that your current ruby version is 2.3.7 and your project uses version 2.3.5 , that causes the conflict. You can try adding a file named .ruby-version in your project directory so that rbenv know and auto switch between versions, or suggest you to install one if not that version not yet installed.

# In file .ruby-version
2.3.5

Read more about it here .

Answer 2

This should help you:

echo '2.3.5' > .ruby-version
rbenv rehash
rbenv local 2.3.5
rbenv global 2.3.5
bundle exec rails c