How to downgrade bundler or upgrade rails?

℡╲_俬逩灬. 提交于 2019-12-02 18:40:56
bruno077

Try the following commands:

gem uninstall bundler
gem install bundler --version '1.0.0'

To install downgraded version of bundler, try:

gem install bundler --version '<= 0.10.6'

so you could have both version installed (check: gem list bundler/bundler _0.9.26_ -v), then run using that specific version, e.g.:

bundle _0.9.26_ install

Learn more: How to upgrade/downgrade Rubygems at rubyforge

To downgrade just type gem uninstall bundler it will display:

Select gem to uninstall:
 1. bundler-1.13.7
 2. bundler-1.14.4
 3. bundler-1.16.4
 4. bundler-2.0.2
 5. All versions

Just select the version you want to uninstall.

If you want downgrade or upgrade your bundler There are some problem when we are trying to uninstall global bundler version. I solve this problem of my own technique. Follow the steps:

Step-1: run: gem list bundler

*** LOCAL GEMS ***
bundler (2.0.2, 1.17.3)
bundler-unload (1.0.2)
rubygems-bundler (1.4.4)

I have 2 bundler version here 2.0.2 and 1.17.3. Now I uninstall 2.0.2 because I will use 1.17.3. But when I am trying to uninstall 2.0.2 using this command gem uninstall bundler --version '2.0.2' I find an error:

ERROR:  While executing gem ... (Gem::InstallError)
bundler is not installed in GEM_HOME, try:
    gem uninstall -i /home/habib/.rvm/gems/ruby-2.3.1@global bundler

because It is my global bundler. But Error message have the solution. then I try step 2.

Step-2: run gem uninstall -i /home/habib/.rvm/gems/ruby-2.3.1@global bundler

output: Successfully uninstalled bundler-2.0.2

step-3: I check my bundler list again run gem list bundler

*** LOCAL GEMS ***

bundler (1.17.3)
bundler-unload (1.0.2)
capistrano-bundler (1.2.0)
rubygems-bundler (1.4.4)

Here I have only one bundler 1.17.3 and I can use it my any project

check your bundler version: run bundler -v

output: Bundler version 1.17.3

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