This little shell function toggles your command line prompt to display full path or only the last 2 folders.

prompt_fullpath_toggle.sh

PROMPT_COMMAND=prompt_fullpath_toggle

export FULL_PATH_PROMPT="0"
function prompt_fullpath_toggle() {
    if [ "$FULL_PATH_PROMPT" = "0" ]; then
        export PS1="%F{blue}ᢹ%f %n [ %F{green}%10d%f ]${vcs_info_msg_1_} "
        export FULL_PATH_PROMPT="1"
        zle reset-prompt

    elif [ "$FULL_PATH_PROMPT" = "1" ]; then
        export PS1="%F{blue}ᢹ%f %n [ %F{green}%2d%f ]${vcs_info_msg_1_} "
        export FULL_PATH_PROMPT="0"
        zle reset-prompt
    fi
};
    zle -N prompt_fullpath_toggle; bindkey  '^[Q' prompt_fullpath_toggle

PROMPT="%F{blue}ᢹ%f %n [%F{green}%2d%f]${vcs_info_msg_1_} "
## for foreign machines(cyan hostname prefixed to user)
#PROMPT='%F{blue}ᢹ%f %F{cyan}%M%f.%B%n%b[ %F{green}%2d%f ] ${vcs_info_msg_1_} '
RPROMPT="${vcs_info_msg_0_} "