Add a follow model
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migrations/2018-05-01-124607_create_follow/down.sql
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migrations/2018-05-01-124607_create_follow/down.sql
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-- This file should undo anything in `up.sql`
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DROP TABLE follows;
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migrations/2018-05-01-124607_create_follow/up.sql
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migrations/2018-05-01-124607_create_follow/up.sql
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-- Your SQL goes here
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CREATE TABLE follows (
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id SERIAL PRIMARY KEY,
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follower_id INTEGER REFERENCES users(id) ON DELETE CASCADE NOT NULL,
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following_id INTEGER REFERENCES users(id) ON DELETE CASCADE NOT NULL
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)
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src/models/follows.rs
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src/models/follows.rs
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use diesel::{self, PgConnection, ExpressionMethods, QueryDsl, RunQueryDsl};
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use schema::follows;
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#[derive(Queryable, Identifiable)]
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pub struct Follow {
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pub id: i32,
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pub follower_id: i32,
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pub following_id: i32
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}
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#[derive(Insertable)]
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#[table_name = "follows"]
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pub struct NewFollow {
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pub follower_id: i32,
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pub following_id: i32
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}
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impl Follow {
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pub fn insert(conn: &PgConnection, new: NewFollow) -> Follow {
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diesel::insert_into(follows::table)
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.values(new)
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.get_result(conn)
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.expect("Unable to insert new follow")
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}
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pub fn get(conn: &PgConnection, id: i32) -> Option<Follow> {
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follows::table.filter(follows::id.eq(id))
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.limit(1)
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.load::<Follow>(conn)
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.expect("Unable to load follow by id")
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.into_iter().nth(0)
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}
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}
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@ -1,5 +1,6 @@
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pub mod blog_authors;
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pub mod blog_authors;
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pub mod blogs;
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pub mod blogs;
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pub mod follows;
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pub mod instance;
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pub mod instance;
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pub mod post_authors;
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pub mod post_authors;
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pub mod posts;
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pub mod posts;
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@ -20,6 +20,14 @@ table! {
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}
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}
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}
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}
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table! {
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follows (id) {
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id -> Int4,
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follower_id -> Int4,
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following_id -> Int4,
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}
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}
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table! {
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table! {
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instances (id) {
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instances (id) {
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id -> Int4,
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id -> Int4,
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@ -80,6 +88,7 @@ joinable!(users -> instances (instance_id));
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allow_tables_to_appear_in_same_query!(
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allow_tables_to_appear_in_same_query!(
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blog_authors,
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blog_authors,
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blogs,
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blogs,
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follows,
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instances,
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instances,
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post_authors,
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post_authors,
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posts,
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posts,
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