How to generate a new rails app with a specific Rails version

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Introduction

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Goal

My goal is to create a new app with the 5.2 Rails version.

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Make sure you have Ruby installed

rbenv versions
ruby -v

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Check the current installed Rails versions

gem list rails --local

Output

If you get nothing, it's because there's no Rails version associated with your current Ruby version.

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List valid Rails versions

gem search '^rails$' --all

Output

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Install the desired Rails version

gem install rails -v '5.2' -V --no-document

Output

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Check the current installed Rails versions

gem list rails --local

Output

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Double check the version

rails -v

Output

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Rehash the directory

rbenv rehash

Output

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Create the app

rails _5.2.0_ new myapp-backend --api

Output

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Check the new app

cd app_name

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Done

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Celebrate

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Reach me out

• Github

• LinkedIn

• Hashnode

• Youtube

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Final thoughts

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