lemmy/crates/api_crud/src/post/update.rs

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Rust
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use crate::PerformCrud;
use actix_web::web::Data;
use lemmy_api_common::{
build_response::build_post_response,
context::LemmyContext,
post::{EditPost, PostResponse},
request::fetch_site_data,
utils::{check_community_ban, local_site_to_slur_regex, local_user_view_from_jwt},
};
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use lemmy_db_schema::{
source::{
actor_language::CommunityLanguage,
local_site::LocalSite,
post::{Post, PostUpdateForm},
},
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traits::Crud,
utils::{diesel_option_overwrite, naive_now},
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};
use lemmy_utils::{
error::LemmyError,
utils::{
slurs::check_slurs_opt,
validation::{check_url_scheme, clean_url_params, is_valid_body_field, is_valid_post_title},
},
};
#[async_trait::async_trait(?Send)]
impl PerformCrud for EditPost {
type Response = PostResponse;
#[tracing::instrument(skip(context))]
async fn perform(&self, context: &Data<LemmyContext>) -> Result<PostResponse, LemmyError> {
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let data: &EditPost = self;
let local_user_view = local_user_view_from_jwt(&data.auth, context).await?;
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let local_site = LocalSite::read(context.pool()).await?;
let data_url = data.url.as_ref();
// TODO No good way to handle a clear.
// Issue link: https://github.com/LemmyNet/lemmy/issues/2287
let url = Some(data_url.map(clean_url_params).map(Into::into));
let body = diesel_option_overwrite(&data.body);
let slur_regex = local_site_to_slur_regex(&local_site);
check_slurs_opt(&data.name, &slur_regex)?;
check_slurs_opt(&data.body, &slur_regex)?;
if let Some(name) = &data.name {
is_valid_post_title(name)?;
}
is_valid_body_field(&data.body, true)?;
check_url_scheme(&data.url)?;
let post_id = data.post_id;
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let orig_post = Post::read(context.pool(), post_id).await?;
check_community_ban(
local_user_view.person.id,
orig_post.community_id,
context.pool(),
)
.await?;
// Verify that only the creator can edit
if !Post::is_post_creator(local_user_view.person.id, orig_post.creator_id) {
return Err(LemmyError::from_message("no_post_edit_allowed"));
}
// Fetch post links and Pictrs cached image
let data_url = data.url.as_ref();
let (metadata_res, thumbnail_url) =
fetch_site_data(context.client(), context.settings(), data_url, true).await;
let (embed_title, embed_description, embed_video_url) = metadata_res
.map(|u| (Some(u.title), Some(u.description), Some(u.embed_video_url)))
.unwrap_or_default();
let language_id = self.language_id;
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CommunityLanguage::is_allowed_community_language(
context.pool(),
language_id,
orig_post.community_id,
)
.await?;
let post_form = PostUpdateForm::builder()
.name(data.name.clone())
.url(url)
.body(body)
.nsfw(data.nsfw)
.embed_title(embed_title)
.embed_description(embed_description)
.embed_video_url(embed_video_url)
.language_id(data.language_id)
.thumbnail_url(Some(thumbnail_url))
.updated(Some(Some(naive_now())))
.build();
let post_id = data.post_id;
Post::update(context.pool(), post_id, &post_form)
.await
.map_err(|e| LemmyError::from_error_message(e, "couldnt_create_post"))?;
build_post_response(
context,
orig_post.community_id,
local_user_view.person.id,
post_id,
)
.await
}
}