Invite with roles

[rahul2240]

Organizers can invite unregistered people to become organizer, cfp, info desk, volunteer coordinator.

At present, we can only assign roles to registered users

If the user with email is not present then a flash appears with message "Could not find user. Please provide a valid email"

So my changes will be to invite people if email doesn't exist, from the roles controller.

Current code: https://github.com/openSUSE/osem/blob/614068874d67c3846902b0d44621e7865073fff4/app/controllers/admin/roles_controller.rb#L65

Changes: `

  unless user

    User.invite!({ email: user_params[:email] }, current_user) do |user|
      user.invitation_message =  @role.name + ' of ' + @conference.title
    end

    user = User.find_by(email: user_params[:email])

    unless user
      redirect_to url,
                  error: 'Could not find user. Please provide a valid email!'
      return
    end
  end

`

[Ana06]

@rahul2240

So my changes will be to invite people if email doesn't exist, from the roles controller.

as said in your PR, the invite code shouldn't be everywhere duplicated.

In my opinion, you should send the the user an invitation and show the state of the invitation in OSEM.