Add DF_PYTHON3_PATH env variable

Add DF_PYTHON3_PATH env variable

Author: yaroslavmo

.env-dist

@@ -216,6 +216,8 @@ APP_KEY=
 #DF_NODEJS_PATH=/usr/local/bin/node
 ## path to the installed python executable
 #DF_PYTHON_PATH=/usr/local/bin/python
+## path to the installed python3 executable
+#DF_PYTHON3_PATH=/usr/local/bin/python3
 ## protocol to use for Node.js and Python when making internal calls back to DreamFactory, http or https
 #DF_SCRIPTING_DEFAULT_PROTOCOL=http
 ## Characters limit for script to run inline. When this limit exceeds script will be written in file and executed.

installer.sh

@@ -119,6 +119,7 @@ declare -A settings=(
 ["DF_SCRIPTING_DISABLE"]=""
 ["DF_NODEJS_PATH"]="/usr/local/bin/node"
 ["DF_PYTHON_PATH"]="/usr/local/bin/python"
+["DF_PYTHON3_PATH"]="/usr/local/bin/python3"
 # API
 ["DF_API_ROUTE_PREFIX"]="api"
 ["DF_STATUS_ROUTE_PREFIX"]=""
@@ -234,6 +235,7 @@ declare -A settings_msg=(
 ["DF_SCRIPTING_DISABLE"]="To disable all server-side scripting set this to 'all', or comma-delimited list of v8js, nodejs, python, and/or php to disable individually."
 ["DF_NODEJS_PATH"]="The system will try to detect the executable path, but in some environments it is best to set the path to the installed Node.js executable."
 ["DF_PYTHON_PATH"]="The system will try to detect the executable path, but in some environments it is best to set the path to the installed Python executable"
+["DF_PYTHON3_PATH"]="The system will try to detect the executable path, but in some environments it is best to set the path to the installed Python3 executable"
 # API
 ["DF_API_ROUTE_PREFIX"]="By default, API calls take the form of http://<server_name>/<api_route_prefix>/v<version_number>"
 ["DF_STATUS_ROUTE_PREFIX"]="By default, API calls take the form of http://<server_name>/[<status_route_prefix>/]status"
@@ -1082,6 +1084,7 @@ case $action in
                     menu_items=("DF_SCRIPTING_DISABLE")
                     [[ "${chosen_features[nodejs]}" ]] && menu_items=("${menu_items[@]}" "DF_NODEJS_PATH")
                     [[ "${chosen_features[python]}" ]] && menu_items=("${menu_items[@]}" "DF_PYTHON_PATH")
+                    [[ "${chosen_features[python3]}" ]] && menu_items=("${menu_items[@]}" "DF_PYTHON_PATH3")
                     settings_menu_handle "Server-side Scripting Settings"
                     ;;