Gem | Graphics Environment for Multimedia

Hmm; if I try bundle install with your Gemfile I get

You could try:

Looks like you need a custom field since total_salary doesn't map to a column. To do this you need to add a class to calculate it:

Never pass the user id as plaintext through the parameters. Get it from the session instead. Its trivial for any malicous user to use the web inspector and simply fill in the hidden input and then upload a unseemly picture as ANY user.

The session cookie is encrypted and much more difficult to tamper with.

I had that problem before. So just removed using mini_racer, decided to install nodeJs in docker.

Rails, and all other gems, can state a minimum required ruby version. This will be taken into consideration automatically when running bundle update.

However, there are two problems:

1. Library authors don't always do this perfectly -- so it's possible you might run a modern gem with an ancient ruby version, and only discover the incompatibility at runtime.

2. Library authors cannot predict the future; they might correctly specify a minimum required ruby version, but they cannot possibly know a maximum compatible ruby version in advance.

However, there is a silver lining: Ruby is pretty good at backwards compatibility. So unless you try to run a big project with ancient libraries and modern ruby (e.g. a rails 4 project using ruby 2.7), you're unlikely to have much problems here.

And also, as I suggest above, this is only likely to be an issue with large gems, such as the rails framework. It's fairly well documented which minimum version of ruby is supported by each major rails release:

Rails 7 requires Ruby 2.7.0 or newer.

Rails 6 requires Ruby 2.5.0 or newer.

Rails 5 requires Ruby 2.2.2 or newer.

Plugins usually are built to extend core classes. Using the generator and following the linked guide at my_plugin/lib/my_plugin/rails_core_ext.rb you have to use class you want to extend.

Your code become

What you observe is not what Postgres does for this query. It returns all columns of the table companies twice, once for each instance, effectively duplicating column names, which can be a problem for some clients that would expect unique column names.

db<>fiddle here

This Question is pretty general... Are you using an Macbook M1? Or an Intel Macbook?

If you are using an Intel macbook ...

• $sudo gem install cocoapods

• move to your folder run pod init

• open your Podfile and add your targets e.g.