Ability to add context values

[nejtr0n]

Checklist

• [x] Are you running the latest v3 release? The list of releases is here.
• [x] Did you check the manual for your release? The v3 manual is here.
• [x] Did you perform a search about this feature? Here's the GitHub guide about searching.

What problem does this solve?

In old versions we could add context fields in Before function like this

  Before: func(c *cli.Context) error {
      db := "example"
      c.Context = context.WithValue(c.Context, "db", db)
      return nil
  },

It's useful for example for passing logger through all commands.

Solution description

Add some middleware layer to command with signature

func(ctx context.Context, command *cli.Command) func(ctx context.Context, command *cli.Command)

where we could modify passing ctx

Describe alternatives you've considered

Return back Context field to command

[ccoVeille]

I agree context should be available everywhere 🥳

[dearchap]

@nejtr0n What exactly are you trying to achieve ? when calling rootCmd.Run(ctx, args) you can pass in a ctx of your choice with whatever values you define. All subcmds will have a context with parent context set to that so you should have able to retrieve said values. Do you mean you want to pass in a new context to the Action function for the command based on what you set in Before ? I hadnt really thought about that use case. If you can give me a sample of Before/Action functions of your older code I can see what can be done.