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This commit is contained in:
Atul Bhosale
2019-03-20 22:26:17 +05:30
committed by Baptiste Gelez
parent 732f514da7
commit b945d1f602
58 changed files with 3160 additions and 2195 deletions
Download Patch File Download Diff File Expand all files Collapse all files
plume-models/src/posts.rs
+248 -190
View File
@@ -1,8 +1,8 @@
use activitypub::{
CustomObject,
activity::{Create, Delete, Update},
link,
object::{Article, Image, Tombstone},
CustomObject,
};
use canapi::{Error as ApiError, Provider};
use chrono::{NaiveDateTime, TimeZone, Utc};
@@ -12,25 +12,26 @@ use scheduled_thread_pool::ScheduledThreadPool as Worker;
use serde_json;
use std::collections::HashSet;
use plume_api::posts::PostEndpoint;
use plume_common::{
activity_pub::{
inbox::{Deletable, FromActivity},
broadcast, Hashtag, Id, IntoId, Licensed, Source, PUBLIC_VISIBILTY,
},
utils::md_to_html,
};
use blogs::Blog;
use instance::Instance;
use medias::Media;
use mentions::Mention;
use plume_api::posts::PostEndpoint;
use plume_common::{
activity_pub::{
broadcast,
inbox::{Deletable, FromActivity},
Hashtag, Id, IntoId, Licensed, Source, PUBLIC_VISIBILTY,
},
utils::md_to_html,
};
use post_authors::*;
use safe_string::SafeString;
use search::Searcher;
use schema::posts;
use search::Searcher;
use tags::*;
use users::User;
use {ap_url, Connection, BASE_URL, Error, Result, ApiResult};
use {ap_url, ApiResult, Connection, Error, Result, BASE_URL};
pub type LicensedArticle = CustomObject<Licensed, Article>;
@@ -75,7 +76,11 @@ impl<'a> Provider<(&'a Connection, &'a Worker, &'a Searcher, Option<i32>)> for P
id: i32,
) -> ApiResult<PostEndpoint> {
if let Ok(post) = Post::get(conn, id) {
if !post.published && !user_id.map(|u| post.is_author(conn, u).unwrap_or(false)).unwrap_or(false) {
if !post.published
&& !user_id
.map(|u| post.is_author(conn, u).unwrap_or(false))
.unwrap_or(false)
{
return Err(ApiError::Authorization(
"You are not authorized to access this post yet.".to_string(),
));
@@ -86,12 +91,23 @@ impl<'a> Provider<(&'a Connection, &'a Worker, &'a Searcher, Option<i32>)> for P
subtitle: Some(post.subtitle.clone()),
content: Some(post.content.get().clone()),
source: Some(post.source.clone()),
author: Some(post.get_authors(conn).map_err(|_| ApiError::NotFound("Authors not found".into()))?[0].username.clone()),
author: Some(
post.get_authors(conn)
.map_err(|_| ApiError::NotFound("Authors not found".into()))?[0]
.username
.clone(),
),
blog_id: Some(post.blog_id),
published: Some(post.published),
creation_date: Some(post.creation_date.format("%Y-%m-%d").to_string()),
license: Some(post.license.clone()),
tags: Some(Tag::for_post(conn, post.id).map_err(|_| ApiError::NotFound("Tags not found".into()))?.into_iter().map(|t| t.tag).collect()),
tags: Some(
Tag::for_post(conn, post.id)
.map_err(|_| ApiError::NotFound("Tags not found".into()))?
.into_iter()
.map(|t| t.tag)
.collect(),
),
cover_id: post.cover_id,
})
} else {
@@ -114,24 +130,39 @@ impl<'a> Provider<(&'a Connection, &'a Worker, &'a Searcher, Option<i32>)> for P
query = query.filter(posts::content.eq(content));
}
query.get_results::<Post>(*conn).map(|ps| ps.into_iter()
.filter(|p| p.published || user_id.map(|u| p.is_author(conn, u).unwrap_or(false)).unwrap_or(false))
.map(|p| PostEndpoint {
id: Some(p.id),
title: Some(p.title.clone()),
subtitle: Some(p.subtitle.clone()),
content: Some(p.content.get().clone()),
source: Some(p.source.clone()),
author: Some(p.get_authors(conn).unwrap_or_default()[0].username.clone()),
blog_id: Some(p.blog_id),
published: Some(p.published),
creation_date: Some(p.creation_date.format("%Y-%m-%d").to_string()),
license: Some(p.license.clone()),
tags: Some(Tag::for_post(conn, p.id).unwrap_or_else(|_| vec![]).into_iter().map(|t| t.tag).collect()),
cover_id: p.cover_id,
query
.get_results::<Post>(*conn)
.map(|ps| {
ps.into_iter()
.filter(|p| {
p.published
|| user_id
.map(|u| p.is_author(conn, u).unwrap_or(false))
.unwrap_or(false)
})
.map(|p| PostEndpoint {
id: Some(p.id),
title: Some(p.title.clone()),
subtitle: Some(p.subtitle.clone()),
content: Some(p.content.get().clone()),
source: Some(p.source.clone()),
author: Some(p.get_authors(conn).unwrap_or_default()[0].username.clone()),
blog_id: Some(p.blog_id),
published: Some(p.published),
creation_date: Some(p.creation_date.format("%Y-%m-%d").to_string()),
license: Some(p.license.clone()),
tags: Some(
Tag::for_post(conn, p.id)
.unwrap_or_else(|_| vec![])
.into_iter()
.map(|t| t.tag)
.collect(),
),
cover_id: p.cover_id,
})
.collect()
})
.collect()
).unwrap_or_else(|_| vec![])
.unwrap_or_else(|_| vec![])
}
fn update(
@@ -142,11 +173,15 @@ impl<'a> Provider<(&'a Connection, &'a Worker, &'a Searcher, Option<i32>)> for P
unimplemented!()
}
fn delete((conn, _worker, search, user_id): &(&Connection, &Worker, &Searcher, Option<i32>), id: i32) {
fn delete(
(conn, _worker, search, user_id): &(&Connection, &Worker, &Searcher, Option<i32>),
id: i32,
) {
let user_id = user_id.expect("Post as Provider::delete: not authenticated");
if let Ok(post) = Post::get(conn, id) {
if post.is_author(conn, user_id).unwrap_or(false) {
post.delete(&(conn, search)).expect("Post as Provider::delete: delete error");
post.delete(&(conn, search))
.expect("Post as Provider::delete: delete error");
}
}
}
@@ -156,84 +191,124 @@ impl<'a> Provider<(&'a Connection, &'a Worker, &'a Searcher, Option<i32>)> for P
query: PostEndpoint,
) -> ApiResult<PostEndpoint> {
if user_id.is_none() {
return Err(ApiError::Authorization("You are not authorized to create new articles.".to_string()));
return Err(ApiError::Authorization(
"You are not authorized to create new articles.".to_string(),
));
}
let title = query.title.clone().expect("No title for new post in API");
let slug = query.title.unwrap().to_kebab_case();
let date = query.creation_date.clone()
.and_then(|d| NaiveDateTime::parse_from_str(format!("{} 00:00:00", d).as_ref(), "%Y-%m-%d %H:%M:%S").ok());
let date = query.creation_date.clone().and_then(|d| {
NaiveDateTime::parse_from_str(format!("{} 00:00:00", d).as_ref(), "%Y-%m-%d %H:%M:%S")
.ok()
});
let domain = &Instance::get_local(&conn)
.map_err(|_| ApiError::NotFound("posts::update: Error getting local instance".into()))?
.public_domain;
let (content, mentions, hashtags) = md_to_html(query.source.clone().unwrap_or_default().clone().as_ref(), domain);
let (content, mentions, hashtags) = md_to_html(
query.source.clone().unwrap_or_default().clone().as_ref(),
domain,
);
let author = User::get(conn, user_id.expect("<Post as Provider>::create: no user_id error"))
.map_err(|_| ApiError::NotFound("Author not found".into()))?;
let author = User::get(
conn,
user_id.expect("<Post as Provider>::create: no user_id error"),
)
.map_err(|_| ApiError::NotFound("Author not found".into()))?;
let blog = match query.blog_id {
Some(x) => x,
None => Blog::find_for_author(conn, &author).map_err(|_| ApiError::NotFound("No default blog".into()))?[0].id
None => {
Blog::find_for_author(conn, &author)
.map_err(|_| ApiError::NotFound("No default blog".into()))?[0]
.id
}
};
if Post::find_by_slug(conn, &slug, blog).is_ok() {
// Not an actual authorization problem, but we have nothing better for now…
// TODO: add another error variant to canapi and add it there
return Err(ApiError::Authorization("A post with the same slug already exists".to_string()));
return Err(ApiError::Authorization(
"A post with the same slug already exists".to_string(),
));
}
let post = Post::insert(conn, NewPost {
blog_id: blog,
slug,
title,
content: SafeString::new(content.as_ref()),
published: query.published.unwrap_or(true),
license: query.license.unwrap_or_else(|| Instance::get_local(conn)
.map(|i| i.default_license)
.unwrap_or_else(|_| String::from("CC-BY-SA"))),
creation_date: date,
ap_url: String::new(),
subtitle: query.subtitle.unwrap_or_default(),
source: query.source.expect("Post API::create: no source error"),
cover_id: query.cover_id,
}, search).map_err(|_| ApiError::NotFound("Creation error".into()))?;
let post = Post::insert(
conn,
NewPost {
blog_id: blog,
slug,
title,
content: SafeString::new(content.as_ref()),
published: query.published.unwrap_or(true),
license: query.license.unwrap_or_else(|| {
Instance::get_local(conn)
.map(|i| i.default_license)
.unwrap_or_else(|_| String::from("CC-BY-SA"))
}),
creation_date: date,
ap_url: String::new(),
subtitle: query.subtitle.unwrap_or_default(),
source: query.source.expect("Post API::create: no source error"),
cover_id: query.cover_id,
},
search,
)
.map_err(|_| ApiError::NotFound("Creation error".into()))?;
PostAuthor::insert(conn, NewPostAuthor {
author_id: author.id,
post_id: post.id
}).map_err(|_| ApiError::NotFound("Error saving authors".into()))?;
PostAuthor::insert(
conn,
NewPostAuthor {
author_id: author.id,
post_id: post.id,
},
)
.map_err(|_| ApiError::NotFound("Error saving authors".into()))?;
if let Some(tags) = query.tags {
for tag in tags {
Tag::insert(conn, NewTag {
tag,
is_hashtag: false,
post_id: post.id
}).map_err(|_| ApiError::NotFound("Error saving tags".into()))?;
Tag::insert(
conn,
NewTag {
tag,
is_hashtag: false,
post_id: post.id,
},
)
.map_err(|_| ApiError::NotFound("Error saving tags".into()))?;
}
}
for hashtag in hashtags {
Tag::insert(conn, NewTag {
tag: hashtag.to_camel_case(),
is_hashtag: true,
post_id: post.id
}).map_err(|_| ApiError::NotFound("Error saving hashtags".into()))?;
Tag::insert(
conn,
NewTag {
tag: hashtag.to_camel_case(),
is_hashtag: true,
post_id: post.id,
},
)
.map_err(|_| ApiError::NotFound("Error saving hashtags".into()))?;
}
if post.published {
for m in mentions.into_iter() {
Mention::from_activity(
&*conn,
&Mention::build_activity(&*conn, &m).map_err(|_| ApiError::NotFound("Couldn't build mentions".into()))?,
&Mention::build_activity(&*conn, &m)
.map_err(|_| ApiError::NotFound("Couldn't build mentions".into()))?,
post.id,
true,
true
).map_err(|_| ApiError::NotFound("Error saving mentions".into()))?;
true,
)
.map_err(|_| ApiError::NotFound("Error saving mentions".into()))?;
}
let act = post.create_activity(&*conn).map_err(|_| ApiError::NotFound("Couldn't create activity".into()))?;
let dest = User::one_by_instance(&*conn).map_err(|_| ApiError::NotFound("Couldn't list remote instances".into()))?;
let act = post
.create_activity(&*conn)
.map_err(|_| ApiError::NotFound("Couldn't create activity".into()))?;
let dest = User::one_by_instance(&*conn)
.map_err(|_| ApiError::NotFound("Couldn't list remote instances".into()))?;
worker.execute(move || broadcast(&author, act, dest));
}
@@ -243,12 +318,23 @@ impl<'a> Provider<(&'a Connection, &'a Worker, &'a Searcher, Option<i32>)> for P
subtitle: Some(post.subtitle.clone()),
content: Some(post.content.get().clone()),
source: Some(post.source.clone()),
author: Some(post.get_authors(conn).map_err(|_| ApiError::NotFound("No authors".into()))?[0].username.clone()),
author: Some(
post.get_authors(conn)
.map_err(|_| ApiError::NotFound("No authors".into()))?[0]
.username
.clone(),
),
blog_id: Some(post.blog_id),
published: Some(post.published),
creation_date: Some(post.creation_date.format("%Y-%m-%d").to_string()),
license: Some(post.license.clone()),
tags: Some(Tag::for_post(conn, post.id).map_err(|_| ApiError::NotFound("Tags not found".into()))?.into_iter().map(|t| t.tag).collect()),
tags: Some(
Tag::for_post(conn, post.id)
.map_err(|_| ApiError::NotFound("Tags not found".into()))?
.into_iter()
.map(|t| t.tag)
.collect(),
),
cover_id: post.cover_id,
})
}
@@ -279,15 +365,17 @@ impl Post {
Ok(post)
}
pub fn update(&self, conn: &Connection, searcher: &Searcher) -> Result<Self> {
diesel::update(self)
.set(self)
.execute(conn)?;
diesel::update(self).set(self).execute(conn)?;
let post = Self::get(conn, self.id)?;
searcher.update_document(conn, &post)?;
Ok(post)
}
pub fn list_by_tag(conn: &Connection, tag: String, (min, max): (i32, i32)) -> Result<Vec<Post>> {
pub fn list_by_tag(
conn: &Connection,
tag: String,
(min, max): (i32, i32),
) -> Result<Vec<Post>> {
use schema::tags;
let ids = tags::table.filter(tags::tag.eq(tag)).select(tags::post_id);
@@ -349,7 +437,11 @@ impl Post {
.map_err(Error::from)
}
pub fn get_recents_for_author(conn: &Connection, author: &User, limit: i64) -> Result<Vec<Post>> {
pub fn get_recents_for_author(
conn: &Connection,
author: &User,
limit: i64,
) -> Result<Vec<Post>> {
use schema::post_authors;
let posts = PostAuthor::belonging_to(author).select(post_authors::post_id);
@@ -481,7 +573,8 @@ impl Post {
Ok(PostAuthor::belonging_to(self)
.filter(post_authors::author_id.eq(author_id))
.count()
.get_result::<i64>(conn)? > 0)
.get_result::<i64>(conn)?
> 0)
}
pub fn get_blog(&self, conn: &Connection) -> Result<Blog> {
@@ -529,7 +622,7 @@ impl Post {
pub fn to_activity(&self, conn: &Connection) -> Result<LicensedArticle> {
let cc = self.get_receivers_urls(conn)?;
let to = vec![PUBLIC_VISIBILTY.to_string()];
let to = vec![PUBLIC_VISIBILTY.to_string()];
let mut mentions_json = Mention::list_for_post(conn, self.id)?
.into_iter()
@@ -542,12 +635,8 @@ impl Post {
mentions_json.append(&mut tags_json);
let mut article = Article::default();
article
.object_props
.set_name_string(self.title.clone())?;
article
.object_props
.set_id_string(self.ap_url.clone())?;
article.object_props.set_name_string(self.title.clone())?;
article.object_props.set_id_string(self.ap_url.clone())?;
let mut authors = self
.get_authors(conn)?
@@ -561,12 +650,10 @@ impl Post {
article
.object_props
.set_content_string(self.content.get().clone())?;
article
.ap_object_props
.set_source_object(Source {
content: self.source.clone(),
media_type: String::from("text/markdown"),
})?;
article.ap_object_props.set_source_object(Source {
content: self.source.clone(),
media_type: String::from("text/markdown"),
})?;
article
.object_props
.set_published_utctime(Utc.from_utc_datetime(&self.creation_date))?;
@@ -578,31 +665,20 @@ impl Post {
if let Some(media_id) = self.cover_id {
let media = Media::get(conn, media_id)?;
let mut cover = Image::default();
cover
.object_props
.set_url_string(media.url(conn)?)?;
cover.object_props.set_url_string(media.url(conn)?)?;
if media.sensitive {
cover
.object_props
.set_summary_string(media.content_warning.unwrap_or_default())?;
}
cover.object_props.set_content_string(media.alt_text)?;
cover
.object_props
.set_content_string(media.alt_text)?;
cover
.object_props
.set_attributed_to_link_vec(vec![
User::get(conn, media.owner_id)?
.into_id(),
])?;
article
.object_props
.set_icon_object(cover)?;
.set_attributed_to_link_vec(vec![User::get(conn, media.owner_id)?.into_id()])?;
article.object_props.set_icon_object(cover)?;
}
article
.object_props
.set_url_string(self.ap_url.clone())?;
article.object_props.set_url_string(self.ap_url.clone())?;
article
.object_props
.set_to_link_vec::<Id>(to.into_iter().map(Id::new).collect())?;
@@ -620,52 +696,39 @@ impl Post {
act.object_props
.set_id_string(format!("{}activity", self.ap_url))?;
act.object_props
.set_to_link_vec::<Id>(
article.object
.object_props
.to_link_vec()?,
)?;
.set_to_link_vec::<Id>(article.object.object_props.to_link_vec()?)?;
act.object_props
.set_cc_link_vec::<Id>(
article.object
.object_props
.cc_link_vec()?,
)?;
.set_cc_link_vec::<Id>(article.object.object_props.cc_link_vec()?)?;
act.create_props
.set_actor_link(Id::new(self.get_authors(conn)?[0].clone().ap_url))?;
act.create_props
.set_object_object(article)?;
act.create_props.set_object_object(article)?;
Ok(act)
}
pub fn update_activity(&self, conn: &Connection) -> Result<Update> {
let article = self.to_activity(conn)?;
let mut act = Update::default();
act.object_props.set_id_string(format!(
"{}/update-{}",
self.ap_url,
Utc::now().timestamp()
))?;
act.object_props
.set_id_string(format!("{}/update-{}", self.ap_url, Utc::now().timestamp()))?;
.set_to_link_vec::<Id>(article.object.object_props.to_link_vec()?)?;
act.object_props
.set_to_link_vec::<Id>(
article.object
.object_props
.to_link_vec()?,
)?;
act.object_props
.set_cc_link_vec::<Id>(
article.object
.object_props
.cc_link_vec()?,
)?;
.set_cc_link_vec::<Id>(article.object.object_props.cc_link_vec()?)?;
act.update_props
.set_actor_link(Id::new(self.get_authors(conn)?[0].clone().ap_url))?;
act.update_props
.set_object_object(article)?;
act.update_props.set_object_object(article)?;
Ok(act)
}
pub fn handle_update(conn: &Connection, updated: &LicensedArticle, searcher: &Searcher) -> Result<()> {
let id = updated.object
.object_props
.id_string()?;
pub fn handle_update(
conn: &Connection,
updated: &LicensedArticle,
searcher: &Searcher,
) -> Result<()> {
let id = updated.object.object_props.id_string()?;
let mut post = Post::find_by_ap_url(conn, &id)?;
if let Ok(title) = updated.object.object_props.name_string() {
@@ -698,7 +761,9 @@ impl Post {
.into_iter()
.map(|s| s.to_camel_case())
.collect::<HashSet<_>>();
if let Some(serde_json::Value::Array(mention_tags)) = updated.object.object_props.tag.clone() {
if let Some(serde_json::Value::Array(mention_tags)) =
updated.object.object_props.tag.clone()
{
let mut mentions = vec![];
let mut tags = vec![];
let mut hashtags = vec![];
@@ -710,8 +775,7 @@ impl Post {
serde_json::from_value::<Hashtag>(tag.clone())
.map_err(Error::from)
.and_then(|t| {
let tag_name = t
.name_string()?;
let tag_name = t.name_string()?;
if txt_hashtags.remove(&tag_name) {
hashtags.push(t);
} else {
@@ -854,20 +918,25 @@ impl Post {
}
pub fn cover_url(&self, conn: &Connection) -> Option<String> {
self.cover_id.and_then(|i| Media::get(conn, i).ok()).and_then(|c| c.url(conn).ok())
self.cover_id
.and_then(|i| Media::get(conn, i).ok())
.and_then(|c| c.url(conn).ok())
}
}
impl<'a> FromActivity<LicensedArticle, (&'a Connection, &'a Searcher)> for Post {
type Error = Error;
fn from_activity((conn, searcher): &(&'a Connection, &'a Searcher), article: LicensedArticle, _actor: Id) -> Result<Post> {
fn from_activity(
(conn, searcher): &(&'a Connection, &'a Searcher),
article: LicensedArticle,
_actor: Id,
) -> Result<Post> {
let license = article.custom_props.license_string().unwrap_or_default();
let article = article.object;
if let Ok(post) = Post::find_by_ap_url(
conn,
&article.object_props.id_string().unwrap_or_default(),
) {
if let Ok(post) =
Post::find_by_ap_url(conn, &article.object_props.id_string().unwrap_or_default())
{
Ok(post)
} else {
let (blog, authors) = article
@@ -880,10 +949,8 @@ impl<'a> FromActivity<LicensedArticle, (&'a Connection, &'a Searcher)> for Post
Ok(u) => {
authors.push(u);
(blog, authors)
},
Err(_) => {
(blog.or_else(|| Blog::from_url(conn, &url).ok()), authors)
},
}
Err(_) => (blog.or_else(|| Blog::from_url(conn, &url).ok()), authors),
}
});
@@ -893,41 +960,24 @@ impl<'a> FromActivity<LicensedArticle, (&'a Connection, &'a Searcher)> for Post
.ok()
.and_then(|img| Media::from_activity(conn, &img).ok().map(|m| m.id));
let title = article
.object_props
.name_string()?;
let title = article.object_props.name_string()?;
let post = Post::insert(
conn,
NewPost {
blog_id: blog?.id,
slug: title.to_kebab_case(),
title,
content: SafeString::new(
&article
.object_props
.content_string()?,
),
content: SafeString::new(&article.object_props.content_string()?),
published: true,
license,
// FIXME: This is wrong: with this logic, we may use the display URL as the AP ID. We need two different fields
ap_url: article.object_props.url_string().or_else(|_|
article
.object_props
.id_string()
)?,
creation_date: Some(
article
.object_props
.published_utctime()?
.naive_utc(),
),
subtitle: article
ap_url: article
.object_props
.summary_string()?,
source: article
.ap_object_props
.source_object::<Source>()?
.content,
.url_string()
.or_else(|_| article.object_props.id_string())?,
creation_date: Some(article.object_props.published_utctime()?.naive_utc()),
subtitle: article.object_props.summary_string()?,
source: article.ap_object_props.source_object::<Source>()?.content,
cover_id: cover,
},
searcher,
@@ -959,7 +1009,12 @@ impl<'a> FromActivity<LicensedArticle, (&'a Connection, &'a Searcher)> for Post
.map_err(Error::from)
.and_then(|t| {
let tag_name = t.name_string()?;
Ok(Tag::from_activity(conn, &t, post.id, hashtags.remove(&tag_name)))
Ok(Tag::from_activity(
conn,
&t,
post.id,
hashtags.remove(&tag_name),
))
})
.ok();
}
@@ -978,11 +1033,8 @@ impl<'a> Deletable<(&'a Connection, &'a Searcher), Delete> for Post {
.set_actor_link(self.get_authors(conn)?[0].clone().into_id())?;
let mut tombstone = Tombstone::default();
tombstone
.object_props
.set_id_string(self.ap_url.clone())?;
act.delete_props
.set_object_object(tombstone)?;
tombstone.object_props.set_id_string(self.ap_url.clone())?;
act.delete_props.set_object_object(tombstone)?;
act.object_props
.set_id_string(format!("{}#delete", self.ap_url))?;
@@ -992,16 +1044,22 @@ impl<'a> Deletable<(&'a Connection, &'a Searcher), Delete> for Post {
for m in Mention::list_for_post(&conn, self.id)? {
m.delete(conn)?;
}
diesel::delete(self)
.execute(*conn)?;
diesel::delete(self).execute(*conn)?;
searcher.delete_document(self);
Ok(act)
}
fn delete_id(id: &str, actor_id: &str, (conn, searcher): &(&Connection, &Searcher)) -> Result<Delete> {
fn delete_id(
id: &str,
actor_id: &str,
(conn, searcher): &(&Connection, &Searcher),
) -> Result<Delete> {
let actor = User::find_by_ap_url(conn, actor_id)?;
let post = Post::find_by_ap_url(conn, id)?;
let can_delete = post.get_authors(conn)?.into_iter().any(|a| actor.id == a.id);
let can_delete = post
.get_authors(conn)?
.into_iter()
.any(|a| actor.id == a.id);
if can_delete {
post.delete(&(conn, searcher))
} else {