There are times when you want to rename your Phoenix project. It requires renaming the module as well the OTP app. You can use following sequence of steps:

Steps

1. Check in all your files into a git repo (git init ., git add -A, git commit -m 'initial commit')
2. Create a new file rename_phoenix_project.sh and copy the code.
3. Replace the variables NEW_NAME and NEW_OTP with the appropriate new names.
4. Replace the variables CURRENT_NAME and CURRENT_OTP with the old names.
5. Save the file, and execute the script in the terminal: sh rename_phoenix_project.sh

#!/bin/bash
export LC_CTYPE=C
export LANG=C

NEW_NAME="NewName"
NEW_OTP="new_name"

CURRENT_NAME="OldName"
CURRENT_OTP="old_name"

set -e

if ! command -v ack &> /dev/null
then
    echo "\`ack\` could not be found. Please install it before continuing (Mac: brew install ack)."
    exit 1
fi

ack -l $CURRENT_NAME --ignore-file=is:rename_phoenix_project.sh | xargs sed -i '' -e "s/$CURRENT_NAME/$NEW_NAME/g"
ack -l $CURRENT_OTP --ignore-file=is:rename_phoenix_project.sh | xargs sed -i '' -e "s/$CURRENT_OTP/$NEW_OTP/g"

git mv lib/$CURRENT_OTP lib/$NEW_OTP
git mv lib/$CURRENT_OTP.ex lib/$NEW_OTP.ex
git mv lib/${CURRENT_OTP}_web lib/${NEW_OTP}_web
git mv lib/${CURRENT_OTP}_web.ex lib/${NEW_OTP}_web.ex


git mv test/${CURRENT_OTP}_web test/${NEW_OTP}_web

Reference

Rename Phoenix Project script from Petal Boilerplate