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add floats to postgres example #45

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Nov 19, 2024
Merged

add floats to postgres example #45

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14 changes: 10 additions & 4 deletions examples/postgres/db/testdata.sql
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Original file line number Diff line number Diff line change
Expand Up @@ -3,17 +3,23 @@ CREATE TABLE articletest (
title varchar(40) NOT NULL,
content text NOT NULL,
authorname varchar(40) NOT NULL,
coauthor text
coauthor text,
authorage real,
authorheight double precision
);

INSERT INTO articletest (title, content, authorname) VALUES
INSERT INTO articletest (title, content, authorname, authorage, authorheight) VALUES
(
'My Life as a Goat',
'I went to Nepal to live as a goat, and it was much better than being a butler.',
'E. Blackadder'
'E. Blackadder',
'22.1',
'72.23'
),
(
'Magnificent Octopus',
'Once upon a time there was a lovely little sausage.',
'S. Baldrick'
'S. Baldrick',
'11.2',
'50.48'
);
11 changes: 9 additions & 2 deletions examples/postgres/src/lib.rs
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Expand Up @@ -17,6 +17,8 @@ struct Article {
content: String,
authorname: String,
coauthor: Option<String>,
authorage: Option<f32>,
authorheight: Option<f64>,
}

impl TryFrom<&pg::Row> for Article {
Expand All @@ -28,13 +30,17 @@ impl TryFrom<&pg::Row> for Article {
let content = String::decode(&row[2])?;
let authorname = String::decode(&row[3])?;
let coauthor = Option::<String>::decode(&row[4])?;
let authorage = Option::<f32>::decode(&row[5])?;
let authorheight = Option::<f64>::decode(&row[6])?;

Ok(Self {
id,
title,
content,
authorname,
coauthor,
authorage,
authorheight,
})
}
}
Expand All @@ -55,7 +61,8 @@ fn read(_req: Request<()>) -> Result<Response<String>> {
let address = std::env::var(DB_URL_ENV)?;
let conn = pg::Connection::open(&address)?;

let sql = "SELECT id, title, content, authorname, coauthor FROM articletest";
let sql =
"SELECT id, title, content, authorname, coauthor, authorage, authorheight FROM articletest";
let rowset = conn.query(sql, &[])?;

let column_summary = rowset
Expand Down Expand Up @@ -90,7 +97,7 @@ fn write(_req: Request<()>) -> Result<Response<String>> {
let address = std::env::var(DB_URL_ENV)?;
let conn = pg::Connection::open(&address)?;

let sql = "INSERT INTO articletest (title, content, authorname) VALUES ('aaa', 'bbb', 'ccc')";
let sql = "INSERT INTO articletest (title, content, authorname, authorage, authorheight) VALUES ('aaa', 'bbb', 'ccc', 1.1, 2.22)";
let nrow_executed = conn.execute(sql, &[])?;

println!("nrow_executed: {}", nrow_executed);
Expand Down
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