def get_server_roles(ctx):
    """
    Convert the Guild.roles list containing Role objects to a list containing strings which represent the role name.

    :param ctx: a discord.ext.commands.context.Context object containing the bot's context
    :return: a list containing strings ([Role.name])
    """
    roles = ctx.guild.roles
    role_list = [i.name for i in roles]
    return role_list