diff --git a/backend/src/application.rs b/backend/src/application.rs
index feed164dbb..e3d2dd13bb 100644
--- a/backend/src/application.rs
+++ b/backend/src/application.rs
@@ -1,7 +1,6 @@
 use crate::{
     config::{
         env::{domain, secret, use_https},
-        get_configuration,
         DatabaseSettings,
         Settings,
     },
@@ -16,7 +15,7 @@ use actix::Actor;
 use actix_identity::{CookieIdentityPolicy, IdentityService};
 use actix_web::{dev::Server, middleware, web, web::Data, App, HttpServer, Scope};
 use sqlx::{postgres::PgPoolOptions, PgPool};
-use std::{net::TcpListener, sync::Arc};
+use std::net::TcpListener;
 
 pub struct Application {
     port: u16,
diff --git a/backend/src/context.rs b/backend/src/context.rs
index 8015337a77..0b5ebeaf67 100644
--- a/backend/src/context.rs
+++ b/backend/src/context.rs
@@ -2,7 +2,6 @@ use crate::ws_service::WSServer;
 use actix::Addr;
 
 use sqlx::PgPool;
-use std::sync::Arc;
 
 pub struct AppContext {
     pub ws_server: Addr<WSServer>,
diff --git a/backend/src/entities/token.rs b/backend/src/entities/token.rs
index fefa31fdea..4251280020 100644
--- a/backend/src/entities/token.rs
+++ b/backend/src/entities/token.rs
@@ -4,7 +4,7 @@ use crate::{
 };
 use chrono::{Duration, Local};
 use derive_more::{From, Into};
-use flowy_net::errors::{ErrorCode, ServerError};
+use flowy_net::errors::ServerError;
 use jsonwebtoken::{decode, encode, Algorithm, DecodingKey, EncodingKey, Header, Validation};
 use serde::{Deserialize, Serialize};
 
diff --git a/backend/src/entities/workspace.rs b/backend/src/entities/workspace.rs
index d6ed1b332e..193edd40a8 100644
--- a/backend/src/entities/workspace.rs
+++ b/backend/src/entities/workspace.rs
@@ -1,4 +1,8 @@
 use chrono::Utc;
+use flowy_workspace::entities::{
+    app::App,
+    view::{RepeatedView, View, ViewType},
+};
 
 #[derive(Debug, Clone, sqlx::FromRow)]
 pub struct WorkspaceTable {
@@ -24,6 +28,19 @@ pub struct AppTable {
     pub(crate) is_trash: bool,
 }
 
+impl std::convert::Into<App> for AppTable {
+    fn into(self) -> App {
+        App {
+            id: self.id.to_string(),
+            workspace_id: self.workspace_id,
+            name: self.name,
+            desc: self.description,
+            belongings: RepeatedView::default(),
+            version: 0,
+        }
+    }
+}
+
 #[derive(Debug, Clone, sqlx::FromRow)]
 pub struct ViewTable {
     pub(crate) id: uuid::Uuid,
@@ -36,3 +53,17 @@ pub struct ViewTable {
     pub(crate) view_type: i32,
     pub(crate) is_trash: bool,
 }
+
+impl std::convert::Into<View> for ViewTable {
+    fn into(self) -> View {
+        View {
+            id: self.id.to_string(),
+            belong_to_id: self.belong_to_id,
+            name: self.name,
+            desc: self.description,
+            view_type: ViewType::from(self.view_type),
+            version: 0,
+            belongings: RepeatedView::default(),
+        }
+    }
+}
diff --git a/backend/src/main.rs b/backend/src/main.rs
index 68334d63dd..2a2e4e2396 100644
--- a/backend/src/main.rs
+++ b/backend/src/main.rs
@@ -1,5 +1,4 @@
 use backend::{application::Application, config::get_configuration};
-use std::net::TcpListener;
 
 #[actix_web::main]
 async fn main() -> std::io::Result<()> {
diff --git a/backend/src/routers/utils.rs b/backend/src/routers/utils.rs
index 3e6c1efe52..499ffcc169 100644
--- a/backend/src/routers/utils.rs
+++ b/backend/src/routers/utils.rs
@@ -1,9 +1,6 @@
 use crate::config::MAX_PAYLOAD_SIZE;
 use actix_web::web;
-use flowy_net::{
-    errors::{ErrorCode, ServerError},
-    response::*,
-};
+use flowy_net::errors::{ErrorCode, ServerError};
 use futures::StreamExt;
 use protobuf::{Message, ProtobufResult};
 
diff --git a/backend/src/sqlx_ext/query.rs b/backend/src/sqlx_ext/query.rs
index 3f591549d6..c1b2a4a35a 100644
--- a/backend/src/sqlx_ext/query.rs
+++ b/backend/src/sqlx_ext/query.rs
@@ -1,6 +1,6 @@
 use flowy_net::errors::ServerError;
 use sql_builder::SqlBuilder as InnerBuilder;
-use sqlx::{any::AnyArguments, postgres::PgArguments, Arguments, Encode, PgPool, Postgres, Type};
+use sqlx::{postgres::PgArguments, Arguments, Encode, PgPool, Postgres, Type};
 
 enum BuilderType {
     Create,
diff --git a/backend/src/user_service/auth.rs b/backend/src/user_service/auth.rs
index 926248bf92..e9dfd8b15d 100644
--- a/backend/src/user_service/auth.rs
+++ b/backend/src/user_service/auth.rs
@@ -14,8 +14,7 @@ use flowy_user::{
     prelude::parser::{UserEmail, UserPassword},
     protobuf::{SignInParams, SignUpParams},
 };
-use sqlx::{Error, PgPool, Postgres, Transaction};
-use std::sync::Arc;
+use sqlx::{PgPool, Postgres, Transaction};
 
 pub async fn sign_in(
     pool: &PgPool,
diff --git a/backend/src/user_service/router.rs b/backend/src/user_service/router.rs
index 5fe446b5c2..2542a433a1 100644
--- a/backend/src/user_service/router.rs
+++ b/backend/src/user_service/router.rs
@@ -1,18 +1,16 @@
 use crate::routers::utils::parse_from_payload;
 use actix_web::{
     web::{Data, Payload},
-    Error,
     HttpRequest,
     HttpResponse,
 };
-use flowy_net::response::*;
+
 use flowy_user::protobuf::{SignInParams, SignUpParams};
 
 use crate::user_service::{register_user, sign_in};
 use actix_identity::Identity;
 use flowy_net::errors::ServerError;
 use sqlx::PgPool;
-use std::sync::Arc;
 
 pub async fn sign_in_handler(
     payload: Payload,
@@ -30,15 +28,14 @@ pub async fn sign_out_handler(id: Identity) -> Result<HttpResponse, ServerError>
 }
 
 pub async fn user_profile(
-    request: HttpRequest,
-    payload: Payload,
-    pool: Data<PgPool>,
+    _request: HttpRequest,
+    _payload: Payload,
+    _pool: Data<PgPool>,
 ) -> Result<HttpResponse, ServerError> {
     unimplemented!()
 }
 
 pub async fn register_user_handler(
-    _request: HttpRequest,
     payload: Payload,
     pool: Data<PgPool>,
 ) -> Result<HttpResponse, ServerError> {
@@ -49,9 +46,9 @@ pub async fn register_user_handler(
 }
 
 pub async fn change_password(
-    request: HttpRequest,
-    payload: Payload,
-    pool: Data<PgPool>,
+    _request: HttpRequest,
+    _payload: Payload,
+    _pool: Data<PgPool>,
 ) -> Result<HttpResponse, ServerError> {
     unimplemented!()
 }
diff --git a/backend/src/user_service/utils.rs b/backend/src/user_service/utils.rs
index 299e6acb62..f89d9bbb72 100644
--- a/backend/src/user_service/utils.rs
+++ b/backend/src/user_service/utils.rs
@@ -1,6 +1,5 @@
-use bcrypt::{hash, verify, BcryptError, DEFAULT_COST};
+use bcrypt::{hash, verify, DEFAULT_COST};
 use flowy_net::errors::{ErrorCode, ServerError};
-use jsonwebtoken::Algorithm;
 
 pub fn uuid() -> String { uuid::Uuid::new_v4().to_string() }
 
diff --git a/backend/src/workspace_service/app/app.rs b/backend/src/workspace_service/app/app.rs
index 09c10d4a3e..3097471445 100644
--- a/backend/src/workspace_service/app/app.rs
+++ b/backend/src/workspace_service/app/app.rs
@@ -3,6 +3,7 @@ use flowy_net::{errors::ServerError, response::FlowyResponse};
 use crate::{
     entities::workspace::AppTable,
     sqlx_ext::{map_sqlx_error, SqlBuilder},
+    workspace_service::view::read_views_belong_to_id,
 };
 use anyhow::Context;
 use chrono::Utc;
@@ -11,8 +12,9 @@ use flowy_user::entities::parser::UserId;
 use flowy_workspace::{
     entities::{
         app::{
-            parser::{AppColorStyle, AppDesc, AppId, AppName},
+            parser::{AppDesc, AppId, AppName},
             App,
+            RepeatedApp,
         },
         view::RepeatedView,
         workspace::parser::WorkspaceId,
@@ -20,7 +22,7 @@ use flowy_workspace::{
     protobuf::{CreateAppParams, QueryAppParams, UpdateAppParams},
 };
 use protobuf::Message;
-use sqlx::{postgres::PgArguments, PgPool, Postgres};
+use sqlx::{postgres::PgArguments, PgPool, Postgres, Transaction};
 use uuid::Uuid;
 
 pub(crate) async fn create_app(
@@ -95,23 +97,18 @@ pub(crate) async fn read_app(
         .await
         .map_err(map_sqlx_error)?;
 
+    let mut views = RepeatedView::default();
+    if params.read_belongings {
+        views.items = read_views_belong_to_id(&mut transaction, &table.id.to_string()).await?;
+    }
+
     transaction
         .commit()
         .await
         .context("Failed to commit SQL transaction to read app.")?;
 
-    let mut app = App {
-        id: table.id.to_string(),
-        workspace_id: table.workspace_id,
-        name: table.name,
-        desc: table.description,
-        belongings: RepeatedView::default(),
-        version: 0,
-    };
-
-    if params.read_belongings {
-        // TODO: read belongings
-    }
+    let mut app: App = table.into();
+    app.belongings = views;
 
     FlowyResponse::success().data(app)
 }
@@ -208,6 +205,30 @@ pub(crate) async fn delete_app(pool: &PgPool, app_id: &str) -> Result<FlowyRespo
     Ok(FlowyResponse::success())
 }
 
+// transaction must be commit from caller
+pub(crate) async fn read_apps_belong_to_workspace<'c>(
+    transaction: &mut Transaction<'c, Postgres>,
+    workspace_id: &str,
+) -> Result<Vec<App>, ServerError> {
+    let workspace_id = WorkspaceId::parse(workspace_id.to_owned()).map_err(invalid_params)?;
+    let (sql, args) = SqlBuilder::select("app_table")
+        .add_field("*")
+        .and_where_eq("workspace_id", workspace_id.0)
+        .build()?;
+
+    let tables = sqlx::query_as_with::<Postgres, AppTable, PgArguments>(&sql, args)
+        .fetch_all(transaction)
+        .await
+        .map_err(map_sqlx_error)?;
+
+    let apps = tables
+        .into_iter()
+        .map(|table| table.into())
+        .collect::<Vec<App>>();
+
+    Ok(apps)
+}
+
 fn check_app_id(id: String) -> Result<Uuid, ServerError> {
     let app_id = AppId::parse(id).map_err(invalid_params)?;
     let app_id = Uuid::parse_str(app_id.as_ref())?;
diff --git a/backend/src/workspace_service/app/router.rs b/backend/src/workspace_service/app/router.rs
index 62948b66ac..62b48f4418 100644
--- a/backend/src/workspace_service/app/router.rs
+++ b/backend/src/workspace_service/app/router.rs
@@ -2,11 +2,9 @@ use crate::{
     routers::utils::parse_from_payload,
     workspace_service::app::app::{create_app, delete_app, read_app, update_app},
 };
-use actix_identity::Identity;
+
 use actix_web::{
     web::{Data, Payload},
-    Error,
-    HttpRequest,
     HttpResponse,
 };
 use flowy_net::errors::ServerError;
diff --git a/backend/src/workspace_service/view/router.rs b/backend/src/workspace_service/view/router.rs
index 7a976f56fc..e6c99a2960 100644
--- a/backend/src/workspace_service/view/router.rs
+++ b/backend/src/workspace_service/view/router.rs
@@ -2,11 +2,9 @@ use crate::{
     routers::utils::parse_from_payload,
     workspace_service::view::{create_view, delete_view, read_view, update_view},
 };
-use actix_identity::Identity;
+
 use actix_web::{
     web::{Data, Payload},
-    Error,
-    HttpRequest,
     HttpResponse,
 };
 use flowy_net::errors::ServerError;
diff --git a/backend/src/workspace_service/view/view.rs b/backend/src/workspace_service/view/view.rs
index f8ebe510d6..48b338cbef 100644
--- a/backend/src/workspace_service/view/view.rs
+++ b/backend/src/workspace_service/view/view.rs
@@ -15,13 +15,12 @@ use flowy_workspace::{
             parser::{ViewDesc, ViewId, ViewName, ViewThumbnail},
             RepeatedView,
             View,
-            ViewType,
         },
     },
     protobuf::{CreateViewParams, QueryViewParams, UpdateViewParams},
 };
 use protobuf::ProtobufEnum;
-use sqlx::{postgres::PgArguments, PgPool, Postgres};
+use sqlx::{postgres::PgArguments, PgPool, Postgres, Transaction};
 use uuid::Uuid;
 
 pub(crate) async fn create_view(
@@ -62,12 +61,6 @@ pub(crate) async fn create_view(
         .await
         .context("Failed to commit SQL transaction to create view.")?;
 
-    // a little confused here, different type with the same name in different crate
-    // let view_type = match params.view_type {
-    //     flowy_workspace::protobuf::ViewType::Blank => ViewType::Doc,
-    //     flowy_workspace::protobuf::ViewType::Doc => ViewType::Doc,
-    // };
-
     let view = View {
         id: uuid.to_string(),
         belong_to_id: belong_to_id.as_ref().to_owned(),
@@ -101,24 +94,19 @@ pub(crate) async fn read_view(
         .await
         .map_err(map_sqlx_error)?;
 
+    let mut views = RepeatedView::default();
+    if params.read_belongings {
+        views.items = read_views_belong_to_id(&mut transaction, &table.id.to_string()).await?;
+    }
+
     transaction
         .commit()
         .await
         .context("Failed to commit SQL transaction to read view.")?;
 
-    let view = View {
-        id: table.id.to_string(),
-        belong_to_id: table.belong_to_id,
-        name: table.name,
-        desc: table.description,
-        view_type: ViewType::from(table.view_type),
-        version: 0,
-        belongings: RepeatedView::default(),
-    };
+    let mut view: View = table.into();
+    view.belongings = views;
 
-    if params.read_belongings {
-        // TODO: read belongings
-    }
     FlowyResponse::success().data(view)
 }
 
@@ -127,20 +115,6 @@ pub(crate) async fn update_view(
     params: UpdateViewParams,
 ) -> Result<FlowyResponse, ServerError> {
     let view_id = check_view_id(params.view_id.clone())?;
-    // #[pb(index = 1)]
-    // pub view_id: String,
-    //
-    // #[pb(index = 2, one_of)]
-    // pub name: Option<String>,
-    //
-    // #[pb(index = 3, one_of)]
-    // pub desc: Option<String>,
-    //
-    // #[pb(index = 4, one_of)]
-    // pub thumbnail: Option<String>,
-    //
-    // #[pb(index = 5, one_of)]
-    // pub is_trash: Option<bool>,
 
     let name = match params.has_name() {
         false => None,
@@ -223,6 +197,30 @@ pub(crate) async fn delete_view(
     Ok(FlowyResponse::success())
 }
 
+// transaction must be commit from caller
+pub(crate) async fn read_views_belong_to_id<'c>(
+    transaction: &mut Transaction<'c, Postgres>,
+    id: &str,
+) -> Result<Vec<View>, ServerError> {
+    // TODO: add index for app_table
+    let (sql, args) = SqlBuilder::select("view_table")
+        .add_field("*")
+        .and_where_eq("belong_to_id", id)
+        .build()?;
+
+    let tables = sqlx::query_as_with::<Postgres, ViewTable, PgArguments>(&sql, args)
+        .fetch_all(transaction)
+        .await
+        .map_err(map_sqlx_error)?;
+
+    let views = tables
+        .into_iter()
+        .map(|table| table.into())
+        .collect::<Vec<View>>();
+
+    Ok(views)
+}
+
 fn check_view_id(id: String) -> Result<Uuid, ServerError> {
     let view_id = ViewId::parse(id).map_err(invalid_params)?;
     let view_id = Uuid::parse_str(view_id.as_ref())?;
diff --git a/backend/src/workspace_service/workspace/router.rs b/backend/src/workspace_service/workspace/router.rs
index 99f474e9f9..909009dc87 100644
--- a/backend/src/workspace_service/workspace/router.rs
+++ b/backend/src/workspace_service/workspace/router.rs
@@ -10,8 +10,6 @@ use crate::{
 use actix_identity::Identity;
 use actix_web::{
     web::{Data, Payload},
-    Error,
-    HttpRequest,
     HttpResponse,
 };
 use flowy_net::errors::ServerError;
@@ -52,7 +50,7 @@ pub async fn delete_handler(
 
 pub async fn update_handler(
     payload: Payload,
-    id: Identity,
+    _id: Identity,
     pool: Data<PgPool>,
 ) -> Result<HttpResponse, ServerError> {
     let params: UpdateWorkspaceParams = parse_from_payload(payload).await?;
diff --git a/backend/src/workspace_service/workspace/workspace.rs b/backend/src/workspace_service/workspace/workspace.rs
index c788b7f763..1a630222a5 100644
--- a/backend/src/workspace_service/workspace/workspace.rs
+++ b/backend/src/workspace_service/workspace/workspace.rs
@@ -1,4 +1,8 @@
-use crate::{entities::workspace::WorkspaceTable, sqlx_ext::*};
+use crate::{
+    entities::workspace::WorkspaceTable,
+    sqlx_ext::*,
+    workspace_service::app::app::read_apps_belong_to_workspace,
+};
 use anyhow::Context;
 use chrono::Utc;
 use flowy_net::{
@@ -21,7 +25,7 @@ use flowy_workspace::{
         UpdateWorkspaceParams,
     },
 };
-use sqlx::{postgres::PgArguments, Arguments, PgPool, Postgres};
+use sqlx::{postgres::PgArguments, PgPool, Postgres, Transaction};
 use uuid::Uuid;
 
 pub(crate) async fn create_workspace(
@@ -90,15 +94,18 @@ pub(crate) async fn read_workspace(
         .await
         .map_err(map_sqlx_error)?;
 
+    let mut apps = RepeatedApp { items: vec![] };
+    if params.read_apps {
+        apps.items = read_apps_belong_to_workspace(&mut transaction, &table.id.to_string()).await?;
+    }
+
     transaction
         .commit()
         .await
         .context("Failed to commit SQL transaction to read workspace.")?;
 
     let mut workspace = Workspace::new(table.id.to_string(), table.name, table.description);
-    if params.get_read_apps() {
-        workspace.apps = RepeatedApp { items: vec![] }
-    }
+    workspace.apps = apps;
 
     FlowyResponse::success().data(workspace)
 }
diff --git a/backend/src/ws_service/ws_client.rs b/backend/src/ws_service/ws_client.rs
index a5e66f821c..db96564e30 100644
--- a/backend/src/ws_service/ws_client.rs
+++ b/backend/src/ws_service/ws_client.rs
@@ -11,7 +11,6 @@ use actix::{
     fut,
     Actor,
     ActorContext,
-    ActorFuture,
     ActorFutureExt,
     Addr,
     AsyncContext,
diff --git a/backend/src/ws_service/ws_server.rs b/backend/src/ws_service/ws_server.rs
index ac307504ad..b6907f6870 100644
--- a/backend/src/ws_service/ws_server.rs
+++ b/backend/src/ws_service/ws_server.rs
@@ -46,7 +46,7 @@ impl Handler<Disconnect> for WSServer {
 impl Handler<ClientMessage> for WSServer {
     type Result = ();
 
-    fn handle(&mut self, msg: ClientMessage, _ctx: &mut Context<Self>) -> Self::Result {}
+    fn handle(&mut self, _msg: ClientMessage, _ctx: &mut Context<Self>) -> Self::Result {}
 }
 
 impl actix::Supervised for WSServer {
diff --git a/backend/tests/api/auth.rs b/backend/tests/api/auth.rs
index 3ac5604f4c..3ce62a451f 100644
--- a/backend/tests/api/auth.rs
+++ b/backend/tests/api/auth.rs
@@ -1,5 +1,5 @@
 use crate::helper::{spawn_app, TestApp};
-use flowy_user::entities::{SignInParams, SignInResponse, SignUpParams, SignUpResponse};
+use flowy_user::entities::{SignInParams, SignUpParams, SignUpResponse};
 
 #[actix_rt::test]
 async fn user_register() {
diff --git a/backend/tests/api/helper.rs b/backend/tests/api/helper.rs
index 27cd68dba1..33007ee96a 100644
--- a/backend/tests/api/helper.rs
+++ b/backend/tests/api/helper.rs
@@ -2,7 +2,7 @@ use backend::{
     application::{get_connection_pool, Application},
     config::{get_configuration, DatabaseSettings},
 };
-use flowy_net::request::HttpRequestBuilder;
+
 use flowy_user::prelude::*;
 use flowy_workspace::prelude::*;
 use sqlx::{Connection, Executor, PgConnection, PgPool};
diff --git a/backend/tests/api/workspace.rs b/backend/tests/api/workspace.rs
index cc80ebe685..b5ba06766c 100644
--- a/backend/tests/api/workspace.rs
+++ b/backend/tests/api/workspace.rs
@@ -31,6 +31,23 @@ async fn workspace_read() {
     log::info!("{:?}", app.read_workspace(read_params).await.unwrap());
 }
 
+#[actix_rt::test]
+async fn workspace_read_with_belongs() {
+    let application = spawn_app().await;
+    let (workspace, user_id) = create_test_workspace(&application).await;
+    let _ = create_test_app(&application, &workspace.id, &user_id).await;
+    let _ = create_test_app(&application, &workspace.id, &user_id).await;
+    let _ = create_test_app(&application, &workspace.id, &user_id).await;
+
+    let read_params = QueryWorkspaceParams {
+        workspace_id: workspace.id.clone(),
+        read_apps: true,
+    };
+
+    let workspace = application.read_workspace(read_params).await.unwrap();
+    assert_eq!(workspace.apps.len(), 3);
+}
+
 #[actix_rt::test]
 async fn workspace_update() {
     let app = spawn_app().await;
@@ -81,14 +98,16 @@ async fn create_test_workspace(app: &TestApp) -> (Workspace, String) {
 #[actix_rt::test]
 async fn app_create() {
     let application = spawn_app().await;
-    let app = create_test_app(&application).await;
+    let (workspace, user_id) = create_test_workspace(&application).await;
+    let app = create_test_app(&application, &workspace.id, &user_id).await;
     log::info!("{:?}", app);
 }
 
 #[actix_rt::test]
 async fn app_read() {
     let application = spawn_app().await;
-    let app = create_test_app(&application).await;
+    let (workspace, user_id) = create_test_workspace(&application).await;
+    let app = create_test_app(&application, &workspace.id, &user_id).await;
 
     let read_params = QueryAppParams {
         app_id: app.id,
@@ -99,10 +118,30 @@ async fn app_read() {
     log::info!("{:?}", application.read_app(read_params).await.unwrap());
 }
 
+#[actix_rt::test]
+async fn app_read_with_belongs() {
+    let application = spawn_app().await;
+    let (workspace, user_id) = create_test_workspace(&application).await;
+    let app = create_test_app(&application, &workspace.id, &user_id).await;
+
+    let _ = create_test_view(&application, &app.id).await;
+    let _ = create_test_view(&application, &app.id).await;
+
+    let read_params = QueryAppParams {
+        app_id: app.id,
+        read_belongings: true,
+        is_trash: false,
+    };
+
+    let app = application.read_app(read_params).await.unwrap();
+    assert_eq!(app.belongings.len(), 2);
+}
+
 #[actix_rt::test]
 async fn app_update() {
     let application = spawn_app().await;
-    let app = create_test_app(&application).await;
+    let (workspace, user_id) = create_test_workspace(&application).await;
+    let app = create_test_app(&application, &workspace.id, &user_id).await;
 
     let update_params = UpdateAppParams {
         app_id: app.id.clone(),
@@ -127,7 +166,8 @@ async fn app_update() {
 #[actix_rt::test]
 async fn app_delete() {
     let application = spawn_app().await;
-    let app = create_test_app(&application).await;
+    let (workspace, user_id) = create_test_workspace(&application).await;
+    let app = create_test_app(&application, &workspace.id, &user_id).await;
 
     let delete_params = DeleteAppParams {
         app_id: app.id.clone(),
@@ -143,15 +183,13 @@ async fn app_delete() {
     assert_eq!(application.read_app(read_params).await.is_none(), true);
 }
 
-async fn create_test_app(app: &TestApp) -> App {
-    let (workspace, user_id) = create_test_workspace(&app).await;
-
+async fn create_test_app(app: &TestApp, workspace_id: &str, user_id: &str) -> App {
     let params = CreateAppParams {
-        workspace_id: workspace.id,
+        workspace_id: workspace_id.to_owned(),
         name: "My first app".to_string(),
         desc: "This is my first app".to_string(),
         color_style: ColorStyle::default(),
-        user_id,
+        user_id: user_id.to_string(),
     };
 
     let app = app.create_app(params).await;
@@ -161,14 +199,19 @@ async fn create_test_app(app: &TestApp) -> App {
 #[actix_rt::test]
 async fn view_create() {
     let application = spawn_app().await;
-    let view = create_test_view(&application).await;
+    let (workspace, user_id) = create_test_workspace(&application).await;
+    let app = create_test_app(&application, &workspace.id, &user_id).await;
+
+    let view = create_test_view(&application, &app.id).await;
     log::info!("{:?}", view);
 }
 
 #[actix_rt::test]
 async fn view_update() {
     let application = spawn_app().await;
-    let view = create_test_view(&application).await;
+    let (workspace, user_id) = create_test_workspace(&application).await;
+    let app = create_test_app(&application, &workspace.id, &user_id).await;
+    let view = create_test_view(&application, &app.id).await;
 
     // update
     let update_params = UpdateViewParams {
@@ -193,7 +236,9 @@ async fn view_update() {
 #[actix_rt::test]
 async fn view_delete() {
     let application = spawn_app().await;
-    let view = create_test_view(&application).await;
+    let (workspace, user_id) = create_test_workspace(&application).await;
+    let app = create_test_app(&application, &workspace.id, &user_id).await;
+    let view = create_test_view(&application, &app.id).await;
 
     // delete
     let delete_params = DeleteViewParams {
@@ -210,10 +255,9 @@ async fn view_delete() {
     assert_eq!(application.read_view(read_params).await.is_none(), true);
 }
 
-async fn create_test_view(application: &TestApp) -> View {
-    let app = create_test_app(&application).await;
+async fn create_test_view(application: &TestApp, app_id: &str) -> View {
     let params = CreateViewParams {
-        belong_to_id: app.id.clone(),
+        belong_to_id: app_id.to_string(),
         name: "My first view".to_string(),
         desc: "This is my first view".to_string(),
         thumbnail: "http://1.png".to_string(),
diff --git a/rust-lib/flowy-dispatch/tests/api/helper.rs b/rust-lib/flowy-dispatch/tests/api/helper.rs
index 63f5ae2125..15d26cef61 100644
--- a/rust-lib/flowy-dispatch/tests/api/helper.rs
+++ b/rust-lib/flowy-dispatch/tests/api/helper.rs
@@ -2,8 +2,7 @@ use flowy_dispatch::prelude::*;
 use std::sync::Once;
 
 #[allow(dead_code)]
-pub fn setup_env() {
-    static INIT: Once = Once::new();
+= Once::new();
     INIT.call_once(|| {
         std::env::set_var("RUST_LOG", "flowy_dispatch=debug,debug");
         env_logger::init();
diff --git a/rust-lib/flowy-net/src/errors.rs b/rust-lib/flowy-net/src/errors.rs
index 7545d4ff67..9850f44ef4 100644
--- a/rust-lib/flowy-net/src/errors.rs
+++ b/rust-lib/flowy-net/src/errors.rs
@@ -4,7 +4,6 @@ use serde_repr::*;
 use std::{fmt, fmt::Debug};
 
 use crate::response::FlowyResponse;
-use uuid::Error;
 
 #[derive(thiserror::Error, Debug, Serialize, Deserialize, Clone)]
 pub struct ServerError {
diff --git a/rust-lib/flowy-net/src/request/request.rs b/rust-lib/flowy-net/src/request/request.rs
index a57f6b471e..7a6f110f06 100644
--- a/rust-lib/flowy-net/src/request/request.rs
+++ b/rust-lib/flowy-net/src/request/request.rs
@@ -1,7 +1,4 @@
-use crate::{
-    errors::{ErrorCode, ServerError},
-    response::FlowyResponse,
-};
+use crate::{errors::ServerError, response::FlowyResponse};
 use bytes::Bytes;
 use hyper::http;
 use protobuf::ProtobufError;
diff --git a/rust-lib/flowy-user/src/services/user/user_server.rs b/rust-lib/flowy-user/src/services/user/user_server.rs
index 86d4c7eeab..6ddc16f9d0 100644
--- a/rust-lib/flowy-user/src/services/user/user_server.rs
+++ b/rust-lib/flowy-user/src/services/user/user_server.rs
@@ -3,11 +3,7 @@ use crate::{
     errors::{ErrorBuilder, UserErrCode, UserError},
 };
 
-use flowy_net::{
-    config::*,
-    future::ResultFuture,
-    request::{http_post, HttpRequestBuilder},
-};
+use flowy_net::{config::*, future::ResultFuture, request::HttpRequestBuilder};
 use std::sync::Arc;
 
 pub trait UserServer {
diff --git a/rust-lib/flowy-workspace/src/entities/app/app_create.rs b/rust-lib/flowy-workspace/src/entities/app/app_create.rs
index 76ae7828ce..3a95cf14b8 100644
--- a/rust-lib/flowy-workspace/src/entities/app/app_create.rs
+++ b/rust-lib/flowy-workspace/src/entities/app/app_create.rs
@@ -7,7 +7,7 @@ use crate::{
     errors::*,
     impl_def_and_def_mut,
 };
-use bytes::Bytes;
+
 use flowy_derive::ProtoBuf;
 use std::convert::TryInto;
 
diff --git a/rust-lib/flowy-workspace/src/entities/view/view_create.rs b/rust-lib/flowy-workspace/src/entities/view/view_create.rs
index 2c6d637d0e..c39e9486b7 100644
--- a/rust-lib/flowy-workspace/src/entities/view/view_create.rs
+++ b/rust-lib/flowy-workspace/src/entities/view/view_create.rs
@@ -2,7 +2,6 @@ use crate::{
     entities::{app::parser::AppId, view::parser::*},
     errors::{ErrorBuilder, WorkspaceError, WsErrCode},
     impl_def_and_def_mut,
-    sql_tables::view::ViewTableType,
 };
 use flowy_derive::{ProtoBuf, ProtoBuf_Enum};
 use std::convert::TryInto;
diff --git a/scripts/flowy-tool/src/main.rs b/scripts/flowy-tool/src/main.rs
index 63b1311af5..7259651f6e 100644
--- a/scripts/flowy-tool/src/main.rs
+++ b/scripts/flowy-tool/src/main.rs
@@ -1,6 +1,5 @@
 mod config;
-mod dart_event;
-mod proto;
+
 mod util;
 
 use clap::{App, Arg};