Set up Diesel

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Jef Roosens 2021-08-19 22:39:14 +02:00
parent 48fdc460ad
commit c0db4991c3
Signed by untrusted user: Jef Roosens
GPG Key ID: 955C0660072F691F
6 changed files with 68 additions and 0 deletions

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.env 100644
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# This file is used by diesel to find the development database
DATABASE_URL=postgres://rb:rb@localhost/rb

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diesel.toml 100644
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# For documentation on how to configure this file,
# see diesel.rs/guides/configuring-diesel-cli
[print_schema]
file = "src/rb/schema.rs"

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docker-compose.yml 100644
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# I just use this compose file to easily start up test databases
version: '3'
services:
db:
image: 'postgres:13-alpine'
restart: 'always'
environment:
- 'POSTGRES_DB=rb'
- 'POSTGRES_USER=rb'
- 'POSTGRES_PASSWORD=rb'
ports:
- '5432:5432'
volumes:
- 'db-data:/var/lib/postgresql/data'
volumes:
db-data:

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-- This file was automatically created by Diesel to setup helper functions
-- and other internal bookkeeping. This file is safe to edit, any future
-- changes will be added to existing projects as new migrations.
DROP FUNCTION IF EXISTS diesel_manage_updated_at(_tbl regclass);
DROP FUNCTION IF EXISTS diesel_set_updated_at();

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-- This file was automatically created by Diesel to setup helper functions
-- and other internal bookkeeping. This file is safe to edit, any future
-- changes will be added to existing projects as new migrations.
-- Sets up a trigger for the given table to automatically set a column called
-- `updated_at` whenever the row is modified (unless `updated_at` was included
-- in the modified columns)
--
-- # Example
--
-- ```sql
-- CREATE TABLE users (id SERIAL PRIMARY KEY, updated_at TIMESTAMP NOT NULL DEFAULT NOW());
--
-- SELECT diesel_manage_updated_at('users');
-- ```
CREATE OR REPLACE FUNCTION diesel_manage_updated_at(_tbl regclass) RETURNS VOID AS $$
BEGIN
EXECUTE format('CREATE TRIGGER set_updated_at BEFORE UPDATE ON %s
FOR EACH ROW EXECUTE PROCEDURE diesel_set_updated_at()', _tbl);
END;
$$ LANGUAGE plpgsql;
CREATE OR REPLACE FUNCTION diesel_set_updated_at() RETURNS trigger AS $$
BEGIN
IF (
NEW IS DISTINCT FROM OLD AND
NEW.updated_at IS NOT DISTINCT FROM OLD.updated_at
) THEN
NEW.updated_at := current_timestamp;
END IF;
RETURN NEW;
END;
$$ LANGUAGE plpgsql;