Mysql Create Not Working

[aramkumar06]

cargo 1.36.0-nightly
diesel = { version = "1.4.1", features = ["mysql"] }

Compiling mystore v0.1.0 (/home/desktop-64/Documents/Ram/rust/practical)
error[E0425]: cannot find value conn in this scope
--> src/models/product.rs:52:54
|
52 | products::table.order(products::id.desc()).first(conn).unwrap()
| ^^^^ not found in this scope

error[E0599]: no method named order found for type schema::products::table in the current scope
--> src/models/product.rs:52:21
|
52 | products::table.order(products::id.desc()).first(conn).unwrap()
| ^^^^^
|
::: src/schema.rs:1:1
|
1 | / table! {
2 | | products (id) {
3 | | id -> Int4,
4 | | name -> Varchar,
... |
7 | | }
8 | | }
| |_- method order not found for this
|
= help: items from traits can only be used if the trait is in scope
= note: the following traits are implemented but not in scope, perhaps add a use for one of them:
candidate #1: use crate::diesel::query_dsl::methods::OrderDsl;
candidate #2: use crate::diesel::QueryDsl;
= note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0599]: no method named desc found for type schema::products::columns::id in the current scope
--> src/models/product.rs:52:40
|
52 | products::table.order(products::id.desc()).first(conn).unwrap()
| ^^^^
|
::: src/schema.rs:1:1
|
1 | / table! {
2 | | products (id) {
3 | | id -> Int4,
4 | | name -> Varchar,
... |
7 | | }
8 | | }
| |_- method desc not found for this
|
= help: items from traits can only be used if the trait is in scope
= note: the following trait is implemented but not in scope, perhaps add a use for it:
use crate::diesel::ExpressionMethods;
= note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: aborting due to 3 previous errors

[sgrif]

The note sections tell you what's wrong and how to fix it (you're missing use diesel::prelude::*;)