Rust/Diesel: How to query and insert into postgres tables which have uuid
I have the following schema generated by Diesel:
table! {
user (id) {
id -> Uuid,
name -> Text
}
and the associated model
use diesel::{
self,
Queryable,
Insertable,
};
use diesel::prelude::*;
use diesel::sql_types::Uuid;
use super::schema::user;
#[derive(Queryable)]
pub struct User {
pub id: Uuid,
pub name: String,
}
impl User {
pub fn get(id: i32, connection: &PgConnection) -> Vec<User> {
user::table.load::<User>(connection).unwrap()
}
}
I get an error when I try to compile this which says:
21 | user::table.load::<User>(connection).unwrap()
| ^^^^ the trait `diesel::Queryable<diesel::sql_types::Uuid, diesel::pg::Pg>` is not implemented for `diesel::sql_types::Uuid`
If I try to insert I get a similar error saying that Expression is not implemented.
Could this be a problem with my dependencies or something I may have forgotten to add to the model?
[dependencies]
rocket = "0.4.0-rc.1"
serde = "1.0"
serde_derive = "1.0"
serde_json = "1.0"
diesel = { version = "1.0.0", features = ["postgres", "uuid"] }
r2d2 = "*"
r2d2-diesel = "*"
[dependencies.rocket_contrib]
version = "0.4.0-rc.1"
default-features = false
features = ["json", "diesel_postgres_pool", "uuid"]
rust rust-diesel
edited Jan 20 at 3:43
Shepmaster
158k15322463
asked Nov 15 '18 at 19:46
user3912090user3912090
616
add a comment |
I have the following schema generated by Diesel:
table! {
user (id) {
id -> Uuid,
name -> Text
}
and the associated model
use diesel::{
self,
Queryable,
Insertable,
};
use diesel::prelude::*;
use diesel::sql_types::Uuid;
use super::schema::user;
#[derive(Queryable)]
pub struct User {
pub id: Uuid,
pub name: String,
}
impl User {
pub fn get(id: i32, connection: &PgConnection) -> Vec<User> {
user::table.load::<User>(connection).unwrap()
}
}
I get an error when I try to compile this which says:
21 | user::table.load::<User>(connection).unwrap()
| ^^^^ the trait `diesel::Queryable<diesel::sql_types::Uuid, diesel::pg::Pg>` is not implemented for `diesel::sql_types::Uuid`
If I try to insert I get a similar error saying that Expression is not implemented.
Could this be a problem with my dependencies or something I may have forgotten to add to the model?
[dependencies]
rocket = "0.4.0-rc.1"
serde = "1.0"
serde_derive = "1.0"
serde_json = "1.0"
diesel = { version = "1.0.0", features = ["postgres", "uuid"] }
r2d2 = "*"
r2d2-diesel = "*"
[dependencies.rocket_contrib]
version = "0.4.0-rc.1"
default-features = false
features = ["json", "diesel_postgres_pool", "uuid"]
rust rust-diesel
edited Jan 20 at 3:43
Shepmaster
158k15322463
asked Nov 15 '18 at 19:46
user3912090user3912090
616
add a comment |
I have the following schema generated by Diesel:
table! {
user (id) {
id -> Uuid,
name -> Text
}
and the associated model
use diesel::{
self,
Queryable,
Insertable,
};
use diesel::prelude::*;
use diesel::sql_types::Uuid;
use super::schema::user;
#[derive(Queryable)]
pub struct User {
pub id: Uuid,
pub name: String,
}
impl User {
pub fn get(id: i32, connection: &PgConnection) -> Vec<User> {
user::table.load::<User>(connection).unwrap()
}
}
I get an error when I try to compile this which says:
21 | user::table.load::<User>(connection).unwrap()
| ^^^^ the trait `diesel::Queryable<diesel::sql_types::Uuid, diesel::pg::Pg>` is not implemented for `diesel::sql_types::Uuid`
If I try to insert I get a similar error saying that Expression is not implemented.
Could this be a problem with my dependencies or something I may have forgotten to add to the model?
[dependencies]
rocket = "0.4.0-rc.1"
serde = "1.0"
serde_derive = "1.0"
serde_json = "1.0"
diesel = { version = "1.0.0", features = ["postgres", "uuid"] }
r2d2 = "*"
r2d2-diesel = "*"
[dependencies.rocket_contrib]
version = "0.4.0-rc.1"
default-features = false
features = ["json", "diesel_postgres_pool", "uuid"]
rust rust-diesel
edited Jan 20 at 3:43
Shepmaster
158k15322463
asked Nov 15 '18 at 19:46
user3912090user3912090
616
I have the following schema generated by Diesel:
table! {
user (id) {
id -> Uuid,
name -> Text
}
and the associated model
use diesel::{
self,
Queryable,
Insertable,
};
use diesel::prelude::*;
use diesel::sql_types::Uuid;
use super::schema::user;
#[derive(Queryable)]
pub struct User {
pub id: Uuid,
pub name: String,
}
impl User {
pub fn get(id: i32, connection: &PgConnection) -> Vec<User> {
user::table.load::<User>(connection).unwrap()
}
}
I get an error when I try to compile this which says:
21 | user::table.load::<User>(connection).unwrap()
| ^^^^ the trait `diesel::Queryable<diesel::sql_types::Uuid, diesel::pg::Pg>` is not implemented for `diesel::sql_types::Uuid`
If I try to insert I get a similar error saying that Expression is not implemented.
Could this be a problem with my dependencies or something I may have forgotten to add to the model?
[dependencies]
rocket = "0.4.0-rc.1"
serde = "1.0"
serde_derive = "1.0"
serde_json = "1.0"
diesel = { version = "1.0.0", features = ["postgres", "uuid"] }
r2d2 = "*"
r2d2-diesel = "*"
[dependencies.rocket_contrib]
version = "0.4.0-rc.1"
default-features = false
features = ["json", "diesel_postgres_pool", "uuid"]
rust rust-diesel
rust rust-diesel
edited Jan 20 at 3:43
Shepmaster
158k15322463
asked Nov 15 '18 at 19:46
user3912090user3912090
616
edited Jan 20 at 3:43
Shepmaster
158k15322463
asked Nov 15 '18 at 19:46
user3912090user3912090
616
edited Jan 20 at 3:43
Shepmaster
158k15322463
edited Jan 20 at 3:43
Shepmaster
158k15322463
edited Jan 20 at 3:43
Shepmaster
158k15322463
158k15322463
asked Nov 15 '18 at 19:46
user3912090user3912090
616
asked Nov 15 '18 at 19:46
user3912090user3912090
616
asked Nov 15 '18 at 19:46
user3912090user3912090
616
616
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
The type in the struct needs to be a Rust type rather than a SQL type, specifically Uuid from the uuid crate (in Diesel 1.3, only version 0.6 is supported by Diesel). In the code from the question, the Uuid is expanded to a diesel::sql_types::Uuid
#[derive(Queryable)]
pub struct User {
pub id: uuid::Uuid,
pub name: String,
}
edited Jan 20 at 3:43
Shepmaster
158k15322463
answered Jan 18 at 9:20
canscabcanscab
1
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The type in the struct needs to be a Rust type rather than a SQL type, specifically Uuid from the uuid crate (in Diesel 1.3, only version 0.6 is supported by Diesel). In the code from the question, the Uuid is expanded to a diesel::sql_types::Uuid
#[derive(Queryable)]
pub struct User {
pub id: uuid::Uuid,
pub name: String,
}
edited Jan 20 at 3:43
Shepmaster
158k15322463
answered Jan 18 at 9:20
canscabcanscab
1
add a comment |
The type in the struct needs to be a Rust type rather than a SQL type, specifically Uuid from the uuid crate (in Diesel 1.3, only version 0.6 is supported by Diesel). In the code from the question, the Uuid is expanded to a diesel::sql_types::Uuid
#[derive(Queryable)]
pub struct User {
pub id: uuid::Uuid,
pub name: String,
}
edited Jan 20 at 3:43
Shepmaster
158k15322463
answered Jan 18 at 9:20
canscabcanscab
1
add a comment |
The type in the struct needs to be a Rust type rather than a SQL type, specifically Uuid from the uuid crate (in Diesel 1.3, only version 0.6 is supported by Diesel). In the code from the question, the Uuid is expanded to a diesel::sql_types::Uuid
#[derive(Queryable)]
pub struct User {
pub id: uuid::Uuid,
pub name: String,
}
edited Jan 20 at 3:43
Shepmaster
158k15322463
answered Jan 18 at 9:20
canscabcanscab
1
The type in the struct needs to be a Rust type rather than a SQL type, specifically Uuid from the uuid crate (in Diesel 1.3, only version 0.6 is supported by Diesel). In the code from the question, the Uuid is expanded to a diesel::sql_types::Uuid
#[derive(Queryable)]
pub struct User {
pub id: uuid::Uuid,
pub name: String,
}
edited Jan 20 at 3:43
Shepmaster
158k15322463
answered Jan 18 at 9:20
canscabcanscab
1
edited Jan 20 at 3:43
Shepmaster
158k15322463
edited Jan 20 at 3:43
Shepmaster
158k15322463
edited Jan 20 at 3:43
Shepmaster
158k15322463
158k15322463
answered Jan 18 at 9:20
canscabcanscab
1
answered Jan 18 at 9:20
canscabcanscab
1
answered Jan 18 at 9:20
canscabcanscab
1
1
add a comment |
add a comment |
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