From: dullbananas Date: Tue, 1 Aug 2023 14:34:10 +0000 (-0700) Subject: Default imprementations for read and delete in Crud trait (#3707) X-Git-Url: http://these/git/%7B%60%24%7BwebArchiveUrl%7D/%22%7B%7D/readmes/%7B%7D/%22%7Burl%7D/%7Biframely.url%7D?a=commitdiff_plain;h=91834d0d2183be2ba0a98385cef80c7be941fde2;p=lemmy.git Default imprementations for read and delete in Crud trait (#3707) * h * Start doing stuff * Default impl for Crud::read * Simplify Crud::read lifetimes * fmt * Stuff * Stuff * Successfully make default read implementation work * Restore Person::read * Clean up default Crud::read and rename 'query2 * Replace filter with find * Attempt default Crud::create * Change Crud to Crud<'a> (won't compile) * Revert "Change Crud to Crud<'a> (won't compile)" This reverts commit 7ed20f5f713600bd48c85aad0848d8dbaae56503. * Default Crud::delete * Remove Crud::delete definitions that match default * Remove commented Site::read * Insert trait * Revert "Insert trait" This reverts commit 9d780c24035d3a9fb12968d3009a28724046dc3a. * Use non-borrowed forms * Revert "Use non-borrowed forms" This reverts commit d2dd4425634b54ef105aab44f1c37cc10a32491e. * Revert "Revert "Change Crud to Crud<'a> (won't compile)"" This reverts commit 25a27165a8ef56495e9f605ac15c9924b101d1bf. * Fix lifetime for everything except Crud::delete * Fix Crud::delete * Add comment about futures * Attempt Crud::create * Attempt separate CrudBounds * Revert "Attempt separate CrudBounds" This reverts commit 1b4ca321c3d2a1d045e2f4c542c593582e9c6d80. * Try to fix Crud::create * Move lifetime parameters to associated types * Revert "Move lifetime parameters to associated types" This reverts commit af1bc858ce5e1dacddc4bbded2da7e4b7237e237. * Revert "Try to fix Crud::create" This reverts commit eec238496c38127cbf3d542b7cfd57ec55622d1f. * Revert "Revert "Attempt separate CrudBounds"" This reverts commit 1ec33ce5022c58a5ad079ed7f5c220fafe5f0a5f. * Revert "Attempt separate CrudBounds" This reverts commit 1b4ca321c3d2a1d045e2f4c542c593582e9c6d80. * Revert "Attempt Crud::create" This reverts commit 47e8071b6826f27e2a562680b4948c37dffa68cb. * Revert "Add comment about futures" This reverts commit b266b1465393995b3be51d5ba207d5249560884f. * Revert "Fix Crud::delete" This reverts commit 3abcce2eec55208993dd9c7c3e51cff83412d15a. * Revert "Fix lifetime for everything except Crud::delete" This reverts commit c1ad7a161bbc8495dbfb8b52073f35ae88519da6. * Revert "Revert "Revert "Change Crud to Crud<'a> (won't compile)""" This reverts commit 3129cd0fc302f34bc0aad59987b9d0eb1139076c. * Clean up * Update site.rs --- diff --git a/crates/db_schema/src/impls/comment.rs b/crates/db_schema/src/impls/comment.rs index 53463432..88757cd0 100644 --- a/crates/db_schema/src/impls/comment.rs +++ b/crates/db_schema/src/impls/comment.rs @@ -156,15 +156,6 @@ impl Crud for Comment { type InsertForm = CommentInsertForm; type UpdateForm = CommentUpdateForm; type IdType = CommentId; - async fn read(pool: &mut DbPool<'_>, comment_id: CommentId) -> Result { - let conn = &mut get_conn(pool).await?; - comment.find(comment_id).first::(conn).await - } - - async fn delete(pool: &mut DbPool<'_>, comment_id: CommentId) -> Result { - let conn = &mut get_conn(pool).await?; - diesel::delete(comment.find(comment_id)).execute(conn).await - } /// This is unimplemented, use [[Comment::create]] async fn create(_pool: &mut DbPool<'_>, _comment_form: &Self::InsertForm) -> Result { diff --git a/crates/db_schema/src/impls/comment_reply.rs b/crates/db_schema/src/impls/comment_reply.rs index eeb171f5..c5b5a3c6 100644 --- a/crates/db_schema/src/impls/comment_reply.rs +++ b/crates/db_schema/src/impls/comment_reply.rs @@ -13,13 +13,6 @@ impl Crud for CommentReply { type InsertForm = CommentReplyInsertForm; type UpdateForm = CommentReplyUpdateForm; type IdType = CommentReplyId; - async fn read(pool: &mut DbPool<'_>, comment_reply_id: CommentReplyId) -> Result { - let conn = &mut get_conn(pool).await?; - comment_reply - .find(comment_reply_id) - .first::(conn) - .await - } async fn create( pool: &mut DbPool<'_>, diff --git a/crates/db_schema/src/impls/community.rs b/crates/db_schema/src/impls/community.rs index 258e4150..2d0fcfe5 100644 --- a/crates/db_schema/src/impls/community.rs +++ b/crates/db_schema/src/impls/community.rs @@ -27,20 +27,6 @@ impl Crud for Community { type InsertForm = CommunityInsertForm; type UpdateForm = CommunityUpdateForm; type IdType = CommunityId; - async fn read(pool: &mut DbPool<'_>, community_id: CommunityId) -> Result { - let conn = &mut get_conn(pool).await?; - community::table - .find(community_id) - .first::(conn) - .await - } - - async fn delete(pool: &mut DbPool<'_>, community_id: CommunityId) -> Result { - let conn = &mut get_conn(pool).await?; - diesel::delete(community::table.find(community_id)) - .execute(conn) - .await - } async fn create(pool: &mut DbPool<'_>, form: &Self::InsertForm) -> Result { let is_new_community = match &form.actor_id { diff --git a/crates/db_schema/src/impls/local_user.rs b/crates/db_schema/src/impls/local_user.rs index 0a72811a..6ef3421d 100644 --- a/crates/db_schema/src/impls/local_user.rs +++ b/crates/db_schema/src/impls/local_user.rs @@ -69,16 +69,7 @@ impl Crud for LocalUser { type InsertForm = LocalUserInsertForm; type UpdateForm = LocalUserUpdateForm; type IdType = LocalUserId; - async fn read(pool: &mut DbPool<'_>, local_user_id: LocalUserId) -> Result { - let conn = &mut get_conn(pool).await?; - local_user.find(local_user_id).first::(conn).await - } - async fn delete(pool: &mut DbPool<'_>, local_user_id: LocalUserId) -> Result { - let conn = &mut get_conn(pool).await?; - diesel::delete(local_user.find(local_user_id)) - .execute(conn) - .await - } + async fn create(pool: &mut DbPool<'_>, form: &Self::InsertForm) -> Result { let conn = &mut get_conn(pool).await?; let mut form_with_encrypted_password = form.clone(); diff --git a/crates/db_schema/src/impls/moderator.rs b/crates/db_schema/src/impls/moderator.rs index 12344f71..a4c300b2 100644 --- a/crates/db_schema/src/impls/moderator.rs +++ b/crates/db_schema/src/impls/moderator.rs @@ -42,11 +42,6 @@ impl Crud for ModRemovePost { type InsertForm = ModRemovePostForm; type UpdateForm = ModRemovePostForm; type IdType = i32; - async fn read(pool: &mut DbPool<'_>, from_id: i32) -> Result { - use crate::schema::mod_remove_post::dsl::mod_remove_post; - let conn = &mut get_conn(pool).await?; - mod_remove_post.find(from_id).first::(conn).await - } async fn create(pool: &mut DbPool<'_>, form: &ModRemovePostForm) -> Result { use crate::schema::mod_remove_post::dsl::mod_remove_post; @@ -76,11 +71,6 @@ impl Crud for ModLockPost { type InsertForm = ModLockPostForm; type UpdateForm = ModLockPostForm; type IdType = i32; - async fn read(pool: &mut DbPool<'_>, from_id: i32) -> Result { - use crate::schema::mod_lock_post::dsl::mod_lock_post; - let conn = &mut get_conn(pool).await?; - mod_lock_post.find(from_id).first::(conn).await - } async fn create(pool: &mut DbPool<'_>, form: &ModLockPostForm) -> Result { use crate::schema::mod_lock_post::dsl::mod_lock_post; @@ -110,11 +100,6 @@ impl Crud for ModFeaturePost { type InsertForm = ModFeaturePostForm; type UpdateForm = ModFeaturePostForm; type IdType = i32; - async fn read(pool: &mut DbPool<'_>, from_id: i32) -> Result { - use crate::schema::mod_feature_post::dsl::mod_feature_post; - let conn = &mut get_conn(pool).await?; - mod_feature_post.find(from_id).first::(conn).await - } async fn create(pool: &mut DbPool<'_>, form: &ModFeaturePostForm) -> Result { use crate::schema::mod_feature_post::dsl::mod_feature_post; @@ -144,11 +129,6 @@ impl Crud for ModRemoveComment { type InsertForm = ModRemoveCommentForm; type UpdateForm = ModRemoveCommentForm; type IdType = i32; - async fn read(pool: &mut DbPool<'_>, from_id: i32) -> Result { - use crate::schema::mod_remove_comment::dsl::mod_remove_comment; - let conn = &mut get_conn(pool).await?; - mod_remove_comment.find(from_id).first::(conn).await - } async fn create(pool: &mut DbPool<'_>, form: &ModRemoveCommentForm) -> Result { use crate::schema::mod_remove_comment::dsl::mod_remove_comment; @@ -178,11 +158,6 @@ impl Crud for ModRemoveCommunity { type InsertForm = ModRemoveCommunityForm; type UpdateForm = ModRemoveCommunityForm; type IdType = i32; - async fn read(pool: &mut DbPool<'_>, from_id: i32) -> Result { - use crate::schema::mod_remove_community::dsl::mod_remove_community; - let conn = &mut get_conn(pool).await?; - mod_remove_community.find(from_id).first::(conn).await - } async fn create(pool: &mut DbPool<'_>, form: &ModRemoveCommunityForm) -> Result { use crate::schema::mod_remove_community::dsl::mod_remove_community; @@ -212,14 +187,6 @@ impl Crud for ModBanFromCommunity { type InsertForm = ModBanFromCommunityForm; type UpdateForm = ModBanFromCommunityForm; type IdType = i32; - async fn read(pool: &mut DbPool<'_>, from_id: i32) -> Result { - use crate::schema::mod_ban_from_community::dsl::mod_ban_from_community; - let conn = &mut get_conn(pool).await?; - mod_ban_from_community - .find(from_id) - .first::(conn) - .await - } async fn create(pool: &mut DbPool<'_>, form: &ModBanFromCommunityForm) -> Result { use crate::schema::mod_ban_from_community::dsl::mod_ban_from_community; @@ -249,11 +216,6 @@ impl Crud for ModBan { type InsertForm = ModBanForm; type UpdateForm = ModBanForm; type IdType = i32; - async fn read(pool: &mut DbPool<'_>, from_id: i32) -> Result { - use crate::schema::mod_ban::dsl::mod_ban; - let conn = &mut get_conn(pool).await?; - mod_ban.find(from_id).first::(conn).await - } async fn create(pool: &mut DbPool<'_>, form: &ModBanForm) -> Result { use crate::schema::mod_ban::dsl::mod_ban; @@ -280,12 +242,6 @@ impl Crud for ModHideCommunity { type UpdateForm = ModHideCommunityForm; type IdType = i32; - async fn read(pool: &mut DbPool<'_>, from_id: i32) -> Result { - use crate::schema::mod_hide_community::dsl::mod_hide_community; - let conn = &mut get_conn(pool).await?; - mod_hide_community.find(from_id).first::(conn).await - } - async fn create(pool: &mut DbPool<'_>, form: &ModHideCommunityForm) -> Result { use crate::schema::mod_hide_community::dsl::mod_hide_community; let conn = &mut get_conn(pool).await?; @@ -314,11 +270,6 @@ impl Crud for ModAddCommunity { type InsertForm = ModAddCommunityForm; type UpdateForm = ModAddCommunityForm; type IdType = i32; - async fn read(pool: &mut DbPool<'_>, from_id: i32) -> Result { - use crate::schema::mod_add_community::dsl::mod_add_community; - let conn = &mut get_conn(pool).await?; - mod_add_community.find(from_id).first::(conn).await - } async fn create(pool: &mut DbPool<'_>, form: &ModAddCommunityForm) -> Result { use crate::schema::mod_add_community::dsl::mod_add_community; @@ -348,14 +299,6 @@ impl Crud for ModTransferCommunity { type InsertForm = ModTransferCommunityForm; type UpdateForm = ModTransferCommunityForm; type IdType = i32; - async fn read(pool: &mut DbPool<'_>, from_id: i32) -> Result { - use crate::schema::mod_transfer_community::dsl::mod_transfer_community; - let conn = &mut get_conn(pool).await?; - mod_transfer_community - .find(from_id) - .first::(conn) - .await - } async fn create(pool: &mut DbPool<'_>, form: &ModTransferCommunityForm) -> Result { use crate::schema::mod_transfer_community::dsl::mod_transfer_community; @@ -385,11 +328,6 @@ impl Crud for ModAdd { type InsertForm = ModAddForm; type UpdateForm = ModAddForm; type IdType = i32; - async fn read(pool: &mut DbPool<'_>, from_id: i32) -> Result { - use crate::schema::mod_add::dsl::mod_add; - let conn = &mut get_conn(pool).await?; - mod_add.find(from_id).first::(conn).await - } async fn create(pool: &mut DbPool<'_>, form: &ModAddForm) -> Result { use crate::schema::mod_add::dsl::mod_add; @@ -415,11 +353,6 @@ impl Crud for AdminPurgePerson { type InsertForm = AdminPurgePersonForm; type UpdateForm = AdminPurgePersonForm; type IdType = i32; - async fn read(pool: &mut DbPool<'_>, from_id: i32) -> Result { - use crate::schema::admin_purge_person::dsl::admin_purge_person; - let conn = &mut get_conn(pool).await?; - admin_purge_person.find(from_id).first::(conn).await - } async fn create(pool: &mut DbPool<'_>, form: &Self::InsertForm) -> Result { use crate::schema::admin_purge_person::dsl::admin_purge_person; @@ -449,14 +382,6 @@ impl Crud for AdminPurgeCommunity { type InsertForm = AdminPurgeCommunityForm; type UpdateForm = AdminPurgeCommunityForm; type IdType = i32; - async fn read(pool: &mut DbPool<'_>, from_id: i32) -> Result { - use crate::schema::admin_purge_community::dsl::admin_purge_community; - let conn = &mut get_conn(pool).await?; - admin_purge_community - .find(from_id) - .first::(conn) - .await - } async fn create(pool: &mut DbPool<'_>, form: &Self::InsertForm) -> Result { use crate::schema::admin_purge_community::dsl::admin_purge_community; @@ -486,11 +411,6 @@ impl Crud for AdminPurgePost { type InsertForm = AdminPurgePostForm; type UpdateForm = AdminPurgePostForm; type IdType = i32; - async fn read(pool: &mut DbPool<'_>, from_id: i32) -> Result { - use crate::schema::admin_purge_post::dsl::admin_purge_post; - let conn = &mut get_conn(pool).await?; - admin_purge_post.find(from_id).first::(conn).await - } async fn create(pool: &mut DbPool<'_>, form: &Self::InsertForm) -> Result { use crate::schema::admin_purge_post::dsl::admin_purge_post; @@ -520,11 +440,6 @@ impl Crud for AdminPurgeComment { type InsertForm = AdminPurgeCommentForm; type UpdateForm = AdminPurgeCommentForm; type IdType = i32; - async fn read(pool: &mut DbPool<'_>, from_id: i32) -> Result { - use crate::schema::admin_purge_comment::dsl::admin_purge_comment; - let conn = &mut get_conn(pool).await?; - admin_purge_comment.find(from_id).first::(conn).await - } async fn create(pool: &mut DbPool<'_>, form: &Self::InsertForm) -> Result { use crate::schema::admin_purge_comment::dsl::admin_purge_comment; diff --git a/crates/db_schema/src/impls/password_reset_request.rs b/crates/db_schema/src/impls/password_reset_request.rs index ae4483d6..9daaa166 100644 --- a/crates/db_schema/src/impls/password_reset_request.rs +++ b/crates/db_schema/src/impls/password_reset_request.rs @@ -24,13 +24,7 @@ impl Crud for PasswordResetRequest { type InsertForm = PasswordResetRequestForm; type UpdateForm = PasswordResetRequestForm; type IdType = i32; - async fn read(pool: &mut DbPool<'_>, password_reset_request_id: i32) -> Result { - let conn = &mut get_conn(pool).await?; - password_reset_request - .find(password_reset_request_id) - .first::(conn) - .await - } + async fn create(pool: &mut DbPool<'_>, form: &PasswordResetRequestForm) -> Result { let conn = &mut get_conn(pool).await?; insert_into(password_reset_request) diff --git a/crates/db_schema/src/impls/person.rs b/crates/db_schema/src/impls/person.rs index 2e086dcb..53f4a4df 100644 --- a/crates/db_schema/src/impls/person.rs +++ b/crates/db_schema/src/impls/person.rs @@ -27,12 +27,7 @@ impl Crud for Person { .first::(conn) .await } - async fn delete(pool: &mut DbPool<'_>, person_id: PersonId) -> Result { - let conn = &mut get_conn(pool).await?; - diesel::delete(person::table.find(person_id)) - .execute(conn) - .await - } + async fn create(pool: &mut DbPool<'_>, form: &PersonInsertForm) -> Result { let conn = &mut get_conn(pool).await?; insert_into(person::table) diff --git a/crates/db_schema/src/impls/person_mention.rs b/crates/db_schema/src/impls/person_mention.rs index 27c04217..f2441f00 100644 --- a/crates/db_schema/src/impls/person_mention.rs +++ b/crates/db_schema/src/impls/person_mention.rs @@ -13,13 +13,6 @@ impl Crud for PersonMention { type InsertForm = PersonMentionInsertForm; type UpdateForm = PersonMentionUpdateForm; type IdType = PersonMentionId; - async fn read(pool: &mut DbPool<'_>, person_mention_id: PersonMentionId) -> Result { - let conn = &mut get_conn(pool).await?; - person_mention - .find(person_mention_id) - .first::(conn) - .await - } async fn create( pool: &mut DbPool<'_>, diff --git a/crates/db_schema/src/impls/post.rs b/crates/db_schema/src/impls/post.rs index f10d0cd2..60b8af2c 100644 --- a/crates/db_schema/src/impls/post.rs +++ b/crates/db_schema/src/impls/post.rs @@ -38,15 +38,6 @@ impl Crud for Post { type InsertForm = PostInsertForm; type UpdateForm = PostUpdateForm; type IdType = PostId; - async fn read(pool: &mut DbPool<'_>, post_id: PostId) -> Result { - let conn = &mut get_conn(pool).await?; - post.find(post_id).first::(conn).await - } - - async fn delete(pool: &mut DbPool<'_>, post_id: PostId) -> Result { - let conn = &mut get_conn(pool).await?; - diesel::delete(post.find(post_id)).execute(conn).await - } async fn create(pool: &mut DbPool<'_>, form: &Self::InsertForm) -> Result { let conn = &mut get_conn(pool).await?; diff --git a/crates/db_schema/src/impls/private_message.rs b/crates/db_schema/src/impls/private_message.rs index fb1d4b90..d422f0d2 100644 --- a/crates/db_schema/src/impls/private_message.rs +++ b/crates/db_schema/src/impls/private_message.rs @@ -15,16 +15,6 @@ impl Crud for PrivateMessage { type InsertForm = PrivateMessageInsertForm; type UpdateForm = PrivateMessageUpdateForm; type IdType = PrivateMessageId; - async fn read( - pool: &mut DbPool<'_>, - private_message_id: PrivateMessageId, - ) -> Result { - let conn = &mut get_conn(pool).await?; - private_message - .find(private_message_id) - .first::(conn) - .await - } async fn create(pool: &mut DbPool<'_>, form: &Self::InsertForm) -> Result { let conn = &mut get_conn(pool).await?; @@ -48,12 +38,6 @@ impl Crud for PrivateMessage { .get_result::(conn) .await } - async fn delete(pool: &mut DbPool<'_>, pm_id: Self::IdType) -> Result { - let conn = &mut get_conn(pool).await?; - diesel::delete(private_message.find(pm_id)) - .execute(conn) - .await - } } impl PrivateMessage { diff --git a/crates/db_schema/src/impls/registration_application.rs b/crates/db_schema/src/impls/registration_application.rs index c8c62288..c4df7ba6 100644 --- a/crates/db_schema/src/impls/registration_application.rs +++ b/crates/db_schema/src/impls/registration_application.rs @@ -26,11 +26,6 @@ impl Crud for RegistrationApplication { .await } - async fn read(pool: &mut DbPool<'_>, id_: Self::IdType) -> Result { - let conn = &mut get_conn(pool).await?; - registration_application.find(id_).first::(conn).await - } - async fn update( pool: &mut DbPool<'_>, id_: Self::IdType, @@ -42,13 +37,6 @@ impl Crud for RegistrationApplication { .get_result::(conn) .await } - - async fn delete(pool: &mut DbPool<'_>, id_: Self::IdType) -> Result { - let conn = &mut get_conn(pool).await?; - diesel::delete(registration_application.find(id_)) - .execute(conn) - .await - } } impl RegistrationApplication { diff --git a/crates/db_schema/src/impls/site.rs b/crates/db_schema/src/impls/site.rs index 2820e9cd..85e2b1f2 100644 --- a/crates/db_schema/src/impls/site.rs +++ b/crates/db_schema/src/impls/site.rs @@ -58,11 +58,6 @@ impl Crud for Site { .get_result::(conn) .await } - - async fn delete(pool: &mut DbPool<'_>, site_id: SiteId) -> Result { - let conn = &mut get_conn(pool).await?; - diesel::delete(site.find(site_id)).execute(conn).await - } } impl Site { diff --git a/crates/db_schema/src/traits.rs b/crates/db_schema/src/traits.rs index 0ba0cbff..07f0b07e 100644 --- a/crates/db_schema/src/traits.rs +++ b/crates/db_schema/src/traits.rs @@ -1,34 +1,64 @@ use crate::{ newtypes::{CommunityId, DbUrl, PersonId}, - utils::DbPool, + utils::{get_conn, DbPool}, }; -use diesel::result::Error; +use diesel::{ + associations::HasTable, + dsl, + query_builder::{DeleteStatement, IntoUpdateTarget}, + query_dsl::methods::{FindDsl, LimitDsl}, + result::Error, + Table, +}; +use diesel_async::{ + methods::{ExecuteDsl, LoadQuery}, + AsyncPgConnection, + RunQueryDsl, +}; + +/// Returned by `diesel::delete` +pub type Delete = DeleteStatement<::Table, ::WhereClause>; + +/// Returned by `Self::table().find(id)` +pub type Find = dsl::Find<::Table, ::IdType>; + +pub type PrimaryKey = <::Table as Table>::PrimaryKey; +// Trying to create default implementations for `create` and `update` results in a lifetime mess and weird compile errors. +// https://github.com/rust-lang/rust/issues/102211 #[async_trait] -pub trait Crud { +pub trait Crud: HasTable + Sized +where + Self::Table: FindDsl, + Find: LimitDsl + IntoUpdateTarget + Send, + Delete>: ExecuteDsl + Send + 'static, + + // Used by `RunQueryDsl::first` + dsl::Limit>: LoadQuery<'static, AsyncPgConnection, Self> + Send + 'static, +{ type InsertForm; type UpdateForm; - type IdType; - async fn create(pool: &mut DbPool<'_>, form: &Self::InsertForm) -> Result - where - Self: Sized; - async fn read(pool: &mut DbPool<'_>, id: Self::IdType) -> Result - where - Self: Sized; + type IdType: Send; + + async fn create(pool: &mut DbPool<'_>, form: &Self::InsertForm) -> Result; + + async fn read(pool: &mut DbPool<'_>, id: Self::IdType) -> Result { + let query: Find = Self::table().find(id); + let conn = &mut *get_conn(pool).await?; + query.first::(conn).await + } + /// when you want to null out a column, you have to send Some(None)), since sending None means you just don't want to update that column. async fn update( pool: &mut DbPool<'_>, id: Self::IdType, form: &Self::UpdateForm, - ) -> Result - where - Self: Sized; - async fn delete(_pool: &mut DbPool<'_>, _id: Self::IdType) -> Result - where - Self: Sized, - Self::IdType: Send, - { - async { Err(Error::NotFound) }.await + ) -> Result; + + async fn delete(pool: &mut DbPool<'_>, id: Self::IdType) -> Result { + let query: Delete> = diesel::delete(Self::table().find(id)); + let conn = &mut *get_conn(pool).await?; + query.execute(conn).await } }