created the initial migration
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-- This file was automatically created by Diesel to setup helper functions
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-- and other internal bookkeeping. This file is safe to edit, any future
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-- changes will be added to existing projects as new migrations.
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DROP FUNCTION IF EXISTS diesel_manage_updated_at(_tbl regclass);
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DROP FUNCTION IF EXISTS diesel_set_updated_at();
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-- This file was automatically created by Diesel to setup helper functions
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-- and other internal bookkeeping. This file is safe to edit, any future
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-- changes will be added to existing projects as new migrations.
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-- Sets up a trigger for the given table to automatically set a column called
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-- `updated_at` whenever the row is modified (unless `updated_at` was included
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-- in the modified columns)
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--
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-- # Example
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--
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-- ```sql
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-- CREATE TABLE users (id SERIAL PRIMARY KEY, updated_at TIMESTAMP NOT NULL DEFAULT NOW());
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--
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-- SELECT diesel_manage_updated_at('users');
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-- ```
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CREATE OR REPLACE FUNCTION diesel_manage_updated_at(_tbl regclass) RETURNS VOID AS $$
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BEGIN
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EXECUTE format('CREATE TRIGGER set_updated_at BEFORE UPDATE ON %s
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FOR EACH ROW EXECUTE PROCEDURE diesel_set_updated_at()', _tbl);
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END;
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$$ LANGUAGE plpgsql;
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CREATE OR REPLACE FUNCTION diesel_set_updated_at() RETURNS trigger AS $$
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BEGIN
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IF (
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NEW IS DISTINCT FROM OLD AND
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NEW.updated_at IS NOT DISTINCT FROM OLD.updated_at
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) THEN
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NEW.updated_at := current_timestamp;
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END IF;
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RETURN NEW;
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END;
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$$ LANGUAGE plpgsql;
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DROP TABLE posts
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CREATE TABLE posts (
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id SERIAL PRIMARY KEY,
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title VARCHAR NOT NULL,
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content TEXT NOT NULL,
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published BOOLEAN NOT NULL DEFAULT 'f',
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created_at TIMESTAMP NOT NULL DEFAULT NOW(),
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updated_at TIMESTAMP NOT NULL DEFAULT NOW()
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)
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extern crate chrono;
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extern crate serde;
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use chrono::NaiveDateTime;
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use serde::Serialize;
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#[derive(Queryable, Serialize)]
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pub struct Post {
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pub id: i32,
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pub title: String,
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pub content: String,
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pub published: bool,
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pub created_at: NaiveDateTime,
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pub updated_at: NaiveDateTime,
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}
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table! {
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posts (id) {
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id -> Int4,
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title -> Varchar,
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content -> Text,
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published -> Bool,
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created_at -> Timestamp,
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updated_at -> Timestamp,
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}
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}
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Reference in New Issue