Disallow naming an article 'new', or any already used slug

Fix #64

Also fixes a lot of potential bug with articles having the same slugs, but not in the same blog

src/models/posts.rs

@@ -52,7 +52,7 @@ pub struct NewPost {
 impl Post {
     insert!(posts, NewPost);
     get!(posts);
-    find_by!(posts, find_by_slug, slug as String);
+    find_by!(posts, find_by_slug, slug as String, blog_id as i32);
     find_by!(posts, find_by_ap_url, ap_url as String);
 
     pub fn count_local(conn: &PgConnection) -> usize {

src/routes/comments.rs

@@ -7,6 +7,7 @@ use rocket_contrib::Template;
 use activity_pub::{broadcast, IntoId, inbox::Notify};
 use db_conn::DbConn;
 use models::{
+    blogs::Blog,
     comments::*,
     posts::Post,
     users::User
@@ -15,14 +16,16 @@ use models::{
 use utils;
 use safe_string::SafeString;
 
-#[get("/~/<_blog>/<slug>/comment")]
-fn new(_blog: String, slug: String, user: User, conn: DbConn) -> Template {
-    may_fail!(Post::find_by_slug(&*conn, slug), "Couldn't find this post", |post| {
+#[get("/~/<blog>/<slug>/comment")]
+fn new(blog: String, slug: String, user: User, conn: DbConn) -> Template {
+    may_fail!(Blog::find_by_fqn(&*conn, blog), "Couldn't find this blog", |blog| {
+        may_fail!(Post::find_by_slug(&*conn, slug, blog.id), "Couldn't find this post", |post| {
             Template::render("comments/new", json!({
                 "post": post,
                 "account": user
             }))
         })
+    })
 }
 
 #[get("/~/<blog>/<slug>/comment", rank=2)]
@@ -40,9 +43,10 @@ struct NewCommentForm {
     pub content: String
 }
 
-#[post("/~/<blog>/<slug>/comment?<query>", data = "<data>")]
-fn create(blog: String, slug: String, query: CommentQuery, data: Form<NewCommentForm>, user: User, conn: DbConn) -> Redirect {
-    let post = Post::find_by_slug(&*conn, slug.clone()).unwrap();
+#[post("/~/<blog_name>/<slug>/comment?<query>", data = "<data>")]
+fn create(blog_name: String, slug: String, query: CommentQuery, data: Form<NewCommentForm>, user: User, conn: DbConn) -> Redirect {
+    let blog = Blog::find_by_fqn(&*conn, blog_name.clone()).unwrap();
+    let post = Post::find_by_slug(&*conn, slug.clone(), blog.id).unwrap();
     let form = data.get();
     let comment = Comment::insert(&*conn, NewComment {
         content: SafeString::new(&form.content.clone()),
@@ -57,5 +61,5 @@ fn create(blog: String, slug: String, query: CommentQuery, data: Form<NewComment
     Comment::notify(&*conn, comment.into_activity(&*conn), user.clone().into_id());
     broadcast(&*conn, &user, comment.create_activity(&*conn), user.get_followers(&*conn));
 
-    Redirect::to(format!("/~/{}/{}/#comment-{}", blog, slug, comment.id))
+    Redirect::to(format!("/~/{}/{}/#comment-{}", blog_name, slug, comment.id))
 }

src/routes/likes.rs

@@ -3,6 +3,7 @@ use rocket::response::{Redirect, Flash};
 use activity_pub::{broadcast, IntoId, inbox::Notify};
 use db_conn::DbConn;
 use models::{
+    blogs::Blog,
     likes,
     posts::Post,
     users::User
@@ -12,7 +13,8 @@ use utils;
 
 #[get("/~/<blog>/<slug>/like")]
 fn create(blog: String, slug: String, user: User, conn: DbConn) -> Redirect {
-    let post = Post::find_by_slug(&*conn, slug.clone()).unwrap();
+    let b = Blog::find_by_fqn(&*conn, blog.clone()).unwrap();
+    let post = Post::find_by_slug(&*conn, slug.clone(), b.id).unwrap();
 
     if !user.has_liked(&*conn, &post) {
         let like = likes::Like::insert(&*conn, likes::NewLike {

src/routes/posts.rs

@@ -20,7 +20,7 @@ use safe_string::SafeString;
 #[get("/~/<blog>/<slug>", rank = 4)]
 fn details(blog: String, slug: String, conn: DbConn, user: Option<User>) -> Template {
     may_fail!(Blog::find_by_fqn(&*conn, blog), "Couldn't find this blog", |blog| {
-        may_fail!(Post::find_by_slug(&*conn, slug), "Couldn't find this post", |post| {
+        may_fail!(Post::find_by_slug(&*conn, slug, blog.id), "Couldn't find this post", |post| {
             let comments = Comment::find_by_post(&*conn, post.id);
 
             Template::render("posts/details", json!({
@@ -39,10 +39,10 @@ fn details(blog: String, slug: String, conn: DbConn, user: Option<User>) -> Temp
     })
 }
 
-#[get("/~/<_blog>/<slug>", rank = 3, format = "application/activity+json")]
-fn activity_details(_blog: String, slug: String, conn: DbConn) -> ActivityPub {
-    // FIXME: posts in different blogs may have the same slug
-    let post = Post::find_by_slug(&*conn, slug).unwrap();
+#[get("/~/<blog>/<slug>", rank = 3, format = "application/activity+json")]
+fn activity_details(blog: String, slug: String, conn: DbConn) -> ActivityPub {
+    let blog = Blog::find_by_fqn(&*conn, blog).unwrap();
+    let post = Post::find_by_slug(&*conn, slug, blog.id).unwrap();
 
     let mut act = post.serialize(&*conn);
     act["@context"] = context();
@@ -54,8 +54,9 @@ fn new_auth(blog: String) -> Flash<Redirect> {
     utils::requires_login("You need to be logged in order to write a new post", &format!("/~/{}/new",blog))
 }
 
-#[get("/~/<_blog>/new", rank = 1)]
-fn new(_blog: String, user: User) -> Template {
+#[get("/~/<blog>/new", rank = 1)]
+#[allow(unused_variables)]
+fn new(blog: String, user: User) -> Template {
     Template::render("posts/new", json!({
         "account": user
     }))
@@ -74,6 +75,9 @@ fn create(blog_name: String, data: Form<NewPostForm>, user: User, conn: DbConn)
     let form = data.get();
     let slug = form.title.to_string().to_kebab_case();
 
+    if slug == "new" || Post::find_by_slug(&*conn, slug.clone(), blog.id).is_some() {
+        Redirect::to(uri!(new: blog = blog_name))
+    } else {
         let content = markdown_to_html(form.content.to_string().as_ref(), &ComrakOptions{
             smart: true,
             safe: true,
@@ -107,4 +111,5 @@ fn create(blog_name: String, data: Form<NewPostForm>, user: User, conn: DbConn)
         broadcast(&*conn, &user, act, user.get_followers(&*conn));
 
         Redirect::to(format!("/~/{}/{}/", blog_name, slug))
+    }
 }

src/routes/reshares.rs

@@ -3,6 +3,7 @@ use rocket::response::{Redirect, Flash};
 use activity_pub::{broadcast, IntoId, inbox::Notify};
 use db_conn::DbConn;
 use models::{
+    blogs::Blog,
     posts::Post,
     reshares::*,
     users::User
@@ -12,7 +13,8 @@ use utils;
 
 #[get("/~/<blog>/<slug>/reshare")]
 fn create(blog: String, slug: String, user: User, conn: DbConn) -> Redirect {
-    let post = Post::find_by_slug(&*conn, slug.clone()).unwrap();
+    let b = Blog::find_by_fqn(&*conn, blog.clone()).unwrap();
+    let post = Post::find_by_slug(&*conn, slug.clone(), b.id).unwrap();
 
     if !user.has_reshared(&*conn, &post) {
         let reshare = Reshare::insert(&*conn, NewReshare {