I have the following code:
let query = "INSERT INTO users (uuid, pass) VALUES = $1, $2";
let statement = db_client.prepare(query).await?
let params = [&user.uuid, &user.pass];
let res = db_client.execute(&statement, params).await?;
Although, I am getting the following error: expected reference &[&dyn ToSql + Sync]
.
I've tried setting the params to type "&[&dyn ToSql + Sync]"
let statement: &[&dyn ToSql + Sync] = db_client.prepare(query).await?
but, no avail.
I've also tried using the macro, to_sql_checked.() on the array... but this does not work either.
Regardless, the following code works:
let res = db_client.execute(&statement, &[&user.uuid, &user.pass]).await?;
What is really the difference here? I believe the code would be better if I was able to preassign the query values before sending them. What is the proper way to do this?
This should work:
let query = "INSERT INTO users (uuid, pass) VALUES = $1, $2";
let statement = db_client.prepare(query).await?
let params = &[&user.uuid, &user.pass];
let res = db_client.execute(&statement, params).await?;
Note the extra borrow in front of the array assigned to params
.
If it doesn't then you have to ascribe the type of params
for some reason you did ascribe a type to statement
instead‽
let params: &[&dyn ToSql + Sync] = &[&user.uuid, &user.pass];
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