Add creation of posts with logging
This commit is contained in:
parent
56544cd0d4
commit
4948195495
1
.gitignore
vendored
1
.gitignore
vendored
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@ -1,3 +1,4 @@
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/rust_web.pdf
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/rust_web.tex
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/simple_text_board/target
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/simple_text_board/simple_text_board.sqlite
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342
rust_web.org
342
rust_web.org
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@ -260,112 +260,280 @@
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*** Steps to reproduce :noexport:
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**** Create new crate
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#+BEGIN_SRC sh
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cargo init simple_text_board
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cd simple_text_board
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rustup override set nightly
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cargo r
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#+END_SRC
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#+BEGIN_SRC sh
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cargo init simple_text_board
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cd simple_text_board
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rustup override set nightly
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cargo r
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#+END_SRC
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**** Setup Rocket
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Add Rocket dependency to ~Cargo.toml~:
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#+BEGIN_SRC toml
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[dependencies]
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rocket = "0.4"
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#+END_SRC
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***** Add Rocket to ~Cargo.toml~
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#+BEGIN_SRC toml
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[dependencies]
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rocket = "0.4"
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#+END_SRC
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**** Modify ~src/main.rs~ for Rockets "~Hello, world!~" program
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#+BEGIN_SRC rust
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#![feature(proc_macro_hygiene, decl_macro)]
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***** Add ~Rocket.toml~
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#+BEGIN_SRC toml
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[development]
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address = "0.0.0.0"
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port = 8000
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workers = 2
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keep_alive = 5
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log = "normal"
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#+END_SRC
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#[macro_use] extern crate rocket;
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***** Modify ~src/main.rs~ for Rockets "~Hello, world!~" program
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#+BEGIN_SRC rust
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#![feature(proc_macro_hygiene, decl_macro)]
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#[get("/")]
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fn index() -> &'static str {
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"Hello, world!"
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}
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#[macro_use] extern crate rocket;
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fn main() {
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rocket::ignite().mount("/", routes![index]).launch();
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}
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#+END_SRC
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#[get("/")]
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fn index() -> &'static str {
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"Hello, world!"
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}
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**** Add ~Rocket.toml~
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#+BEGIN_SRC toml
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[development]
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address = "0.0.0.0"
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port = 8000
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workers = 2
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keep_alive = 5
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log = "normal"
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#+END_SRC
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fn main() {
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rocket::ignite().mount("/", routes![index]).launch();
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}
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#+END_SRC
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**** Create the base template at ~templates/base.html.tera~
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#+BEGIN_SRC html
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8" />
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<meta name="viewport" content="width=device-width" />
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<title>simple text board</title>
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</head>
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<body>
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<ul>
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<li><a href="/">home</a></li>
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<li><a href="/create">create post</a></li>
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</ul>
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{% block content %} {% endblock %}
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</body>
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</html>
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#+END_SRC
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**** Create first templates
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***** Create the base template at ~templates/base.html.tera~
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#+BEGIN_SRC html
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8" />
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<meta name="viewport" content="width=device-width" />
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<title>simple text board</title>
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</head>
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<body>
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<ul>
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<li><a href="/">home</a></li>
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<li><a href="/create">create post</a></li>
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</ul>
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{% block content %} {% endblock %}
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</body>
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</html>
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#+END_SRC
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**** Create the create template at ~templates/create.html.tera~
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#+BEGIN_SRC html
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{% extends "base" %}
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***** Create the create template at ~templates/create.html.tera~
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#+BEGIN_SRC html
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{% extends "base" %}
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{% block content %}
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<h1>simple text board</h1>
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<h2>create a post</h2>
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{% if flash %}
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<p>{{ flash }}</p>
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{% endif %}
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<form action="/create" method="post" accept-charset="utf-8">
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<label for="author">author name</label>
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<input type="text" placeholder="author" name="author" required>
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{% block content %}
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<h1>simple text board</h1>
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<h2>create a post</h2>
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<form action="/create" method="post" accept-charset="utf-8">
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<label for="author">author name</label>
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<input type="text" placeholder="author" name="author" required>
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<label for="email">email</label>
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<input type="text" placeholder="email" name="email">
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<label for="email">email</label>
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<input type="text" placeholder="email" name="email">
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<label for="title">title</label>
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<input type="text" placeholder="title" name="title" required>
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<label for="title">title</label>
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<input type="text" placeholder="title" name="title" required>
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<label for="content">content</label>
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<textarea type="text" placeholder="content" name="content" rows="8" cols="50" required>
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</textarea>
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<label for="content">content</label>
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<textarea type="text" placeholder="content" name="content" rows="8" cols="50" required>
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</textarea>
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<button type="submit">create</button>
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</form>
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{% endblock content %}
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#+END_SRC
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<button type="submit">create</button>
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{% if flash %}<p>{{ flash }}</p>{% endif %}
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</form>
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{% endblock content %}
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#+END_SRC
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**** Create the ~create_form~ function
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#+BEGIN_SRC rust
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use std::collections::HashMap;
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***** Create the ~create_form~ function and add it to routing
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#+BEGIN_SRC rust
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#![feature(proc_macro_hygiene, decl_macro)]
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use rocket::{get, request::FlashMessage, routes};
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use rocket_contrib::templates::Template;
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use std::collections::HashMap;
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#[get("/create")]
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fn create_form(flash: Option<FlashMessage>) -> Template {
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let mut context = HashMap::new();
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use rocket::{get, request::FlashMessage, routes};
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use rocket_contrib::templates::Template;
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if let Some(ref msg) = flash {
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context.insert("flash", msg.msg());
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}
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#[get("/create")]
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fn create_form(flash: Option<FlashMessage>) -> Template {
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let mut context = HashMap::new();
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Template::render("create", &context)
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}
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#+END_SRC
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if let Some(ref msg) = flash {
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context.insert("flash", msg.msg());
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}
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Template::render("create", &context)
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}
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...
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fn main() {
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rocket::ignite()
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.mount("/", routes![index, create_form])
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.attach(Template::fairing())
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.launch();
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}
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#+END_SRC
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**** Setup Database and posts
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***** Create the ~.env~ file
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#+BEGIN_SRC sh
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DATABASE_URL=simple_text_board.sqlite
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#+END_SRC
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***** Add diesel to the dependencies and to ~rocket_contrib~ in ~Cargo.toml~
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#+BEGIN_SRC toml
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...
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chrono = "0.4"
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diesel = { version = "1.4", features = ["sqlite", "chrono"] }
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log = "0.4"
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...
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[dependencies.rocket_contrib]
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...
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features = ["diesel_sqlite_pool", "tera_templates"]
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#+END_SRC
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***** Configure database for Rocket in ~Rocket.toml~
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#+BEGIN_SRC toml
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[global.databases]
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sqlite = { url = "simple_text_board.sqlite" }
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#+END_SRC
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***** Create the first table schema
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#+BEGIN_SRC sh
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diesel setup
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diesel migration generate create_posts
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#+END_SRC
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***** How to create the table
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#+BEGIN_SRC sql
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CREATE TABLE posts (
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id INTEGER NOT NULL PRIMARY KEY,
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parent INTEGER,
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timestamp DATETIME NOT NULL,
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author VARCHAR NOT NULL,
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email VARCHAR NOT NULL,
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title VARCHAR NOT NULL,
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content VARCHAR NOT NULL,
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FOREIGN KEY (parent) REFERENCES posts(id)
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);
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#+END_SRC
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***** How to destroy it
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#+BEGIN_SRC sql
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DROP TABLE posts;
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#+END_SRC
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***** Applay and test rollback
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#+BEGIN_SRC sh
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diesel migration run
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diesel migration redo
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#+END_SRC
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***** Create data model in ~src/models.rs~
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#+BEGIN_SRC rust
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use crate::schema::posts::{self, dsl::posts as table_posts};
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use chrono::NaiveDateTime;
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use diesel::{QueryResult, RunQueryDsl};
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#[derive(Insertable)]
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#[table_name = "posts"]
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pub struct NewPost<'a> {
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pub parent: Option<&'a i32>,
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pub timestamp: NaiveDateTime,
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pub author: &'a str,
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pub email: &'a str,
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pub title: &'a str,
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pub content: &'a str,
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}
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impl NewPost<'_> {
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pub fn insert(&self, conn: &diesel::SqliteConnection) -> QueryResult<usize> {
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diesel::insert_into(table_posts).values(self).execute(conn)
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}
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}
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#+END_SRC
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***** Add create post functionality to ~src/main.rs~
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#+BEGIN_SRC rust
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#![feature(proc_macro_hygiene, decl_macro)]
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#[macro_use]
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extern crate diesel;
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use std::{collections::HashMap, net::SocketAddr};
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use chrono::Local;
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use diesel::SqliteConnection;
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use log::{error, info};
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use rocket::{
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get, post,
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request::{FlashMessage, Form},
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response::{Flash, Redirect},
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routes, uri, FromForm,
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};
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use rocket_contrib::{database, templates::Template};
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mod models;
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mod schema;
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use models::NewPost;
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#[database("sqlite")]
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struct DbCon(SqliteConnection);
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#[derive(FromForm)]
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pub struct PostForm {
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author: String,
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email: String,
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title: String,
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content: String,
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}
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...
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#[post("/create", data = "<post>")]
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fn create_post(
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conn: DbCon,
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remote_address: SocketAddr,
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post: Form<PostForm>,
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) -> Result<Redirect, Flash<Redirect>> {
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let post = NewPost {
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parent: None,
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timestamp: Local::now().naive_local(),
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author: &post.author.trim(),
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email: &post.email.trim(),
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title: &post.title.trim(),
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content: &post.content.trim(),
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};
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match post.insert(&conn) {
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Ok(_) => {
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info!("New post from {}", remote_address);
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Ok(Redirect::to(uri!(index)))
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}
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Err(e) => {
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error!("Could not create post from {}: {:?}", remote_address, e);
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Err(Flash::error(
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Redirect::to(uri!(create_form)),
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"Could not create post.".to_string(),
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))
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}
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}
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}
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...
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fn main() {
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rocket::ignite()
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.mount("/", routes![index, create_form, create_post])
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.attach(DbCon::fairing())
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.attach(Template::fairing())
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.launch();
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}
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#+END_SRC
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* Conclusion
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1
simple_text_board/.env
Normal file
1
simple_text_board/.env
Normal file
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@ -0,0 +1 @@
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DATABASE_URL=simple_text_board.sqlite
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4
simple_text_board/Cargo.lock
generated
4
simple_text_board/Cargo.lock
generated
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@ -270,6 +270,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3e2de9deab977a153492a1468d1b1c0662c1cf39e5ea87d0c060ecd59ef18d8c"
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dependencies = [
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"byteorder",
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"chrono",
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"diesel_derives",
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"libsqlite3-sys",
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"r2d2",
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@ -1163,6 +1164,9 @@ dependencies = [
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name = "simple_text_board"
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version = "0.1.0"
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dependencies = [
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"chrono",
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"diesel",
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"log 0.4.13",
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"rocket",
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"rocket_contrib",
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]
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|
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@ -6,8 +6,11 @@ edition = "2018"
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[dependencies]
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rocket = "0.4"
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chrono = "0.4"
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diesel = { version = "1.4", features = ["sqlite", "chrono"] }
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log = "0.4"
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[dependencies.rocket_contrib]
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version = "0.4"
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default-features = false
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features = ["tera_templates"]
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features = ["diesel_sqlite_pool", "tera_templates"]
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|
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@ -1,3 +1,6 @@
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[global.databases]
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sqlite = { url = "simple_text_board.sqlite" }
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|
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[development]
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address = "0.0.0.0"
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port = 8000
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|
|
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5
simple_text_board/diesel.toml
Normal file
5
simple_text_board/diesel.toml
Normal file
|
|
@ -0,0 +1,5 @@
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# For documentation on how to configure this file,
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# see diesel.rs/guides/configuring-diesel-cli
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[print_schema]
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file = "src/schema.rs"
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@ -0,0 +1 @@
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DROP TABLE posts;
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@ -0,0 +1,10 @@
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CREATE TABLE posts (
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id INTEGER NOT NULL PRIMARY KEY,
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parent INTEGER,
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timestamp DATETIME NOT NULL,
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author VARCHAR NOT NULL,
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email VARCHAR NOT NULL,
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title VARCHAR NOT NULL,
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content VARCHAR NOT NULL,
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FOREIGN KEY (parent) REFERENCES posts(id)
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);
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@ -1,9 +1,36 @@
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#![feature(proc_macro_hygiene, decl_macro)]
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|
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use std::collections::HashMap;
|
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#[macro_use]
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extern crate diesel;
|
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|
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use rocket::{get, request::FlashMessage, routes};
|
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use rocket_contrib::templates::Template;
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use std::{collections::HashMap, net::SocketAddr};
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|
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use chrono::Local;
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use diesel::SqliteConnection;
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use log::{error, info};
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use rocket::{
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get, post,
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request::{FlashMessage, Form},
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response::{Flash, Redirect},
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routes, uri, FromForm,
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};
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use rocket_contrib::{database, templates::Template};
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mod models;
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mod schema;
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use models::NewPost;
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#[database("sqlite")]
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struct DbCon(SqliteConnection);
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#[derive(FromForm)]
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struct PostForm {
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author: String,
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email: String,
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title: String,
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content: String,
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}
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|
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#[get("/create")]
|
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fn create_form(flash: Option<FlashMessage>) -> Template {
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|
|
@ -16,6 +43,36 @@ fn create_form(flash: Option<FlashMessage>) -> Template {
|
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Template::render("create", &context)
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}
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|
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#[post("/create", data = "<post>")]
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fn create_post(
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conn: DbCon,
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remote_address: SocketAddr,
|
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post: Form<PostForm>,
|
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) -> Result<Redirect, Flash<Redirect>> {
|
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let post = NewPost {
|
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parent: None,
|
||||
timestamp: Local::now().naive_local(),
|
||||
author: &post.author.trim(),
|
||||
email: &post.email.trim(),
|
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title: &post.title.trim(),
|
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content: &post.content.trim(),
|
||||
};
|
||||
|
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match post.insert(&conn) {
|
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Ok(_) => {
|
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info!("New post from {}", remote_address);
|
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Ok(Redirect::to(uri!(index)))
|
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}
|
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Err(e) => {
|
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error!("Could not create post from {}: {:?}", remote_address, e);
|
||||
Err(Flash::error(
|
||||
Redirect::to(uri!(create_form)),
|
||||
"Could not create post.".to_string(),
|
||||
))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[get("/")]
|
||||
fn index() -> &'static str {
|
||||
"Hello, world!"
|
||||
|
|
@ -23,7 +80,8 @@ fn index() -> &'static str {
|
|||
|
||||
fn main() {
|
||||
rocket::ignite()
|
||||
.mount("/", routes![index, create_form])
|
||||
.mount("/", routes![index, create_form, create_post])
|
||||
.attach(DbCon::fairing())
|
||||
.attach(Template::fairing())
|
||||
.launch();
|
||||
}
|
||||
|
|
|
|||
20
simple_text_board/src/models.rs
Normal file
20
simple_text_board/src/models.rs
Normal file
|
|
@ -0,0 +1,20 @@
|
|||
use crate::schema::posts::{self, dsl::posts as table_posts};
|
||||
use chrono::NaiveDateTime;
|
||||
use diesel::{QueryResult, RunQueryDsl};
|
||||
|
||||
#[derive(Insertable)]
|
||||
#[table_name = "posts"]
|
||||
pub struct NewPost<'a> {
|
||||
pub parent: Option<&'a i32>,
|
||||
pub timestamp: NaiveDateTime,
|
||||
pub author: &'a str,
|
||||
pub email: &'a str,
|
||||
pub title: &'a str,
|
||||
pub content: &'a str,
|
||||
}
|
||||
|
||||
impl NewPost<'_> {
|
||||
pub fn insert(&self, conn: &diesel::SqliteConnection) -> QueryResult<usize> {
|
||||
diesel::insert_into(table_posts).values(self).execute(conn)
|
||||
}
|
||||
}
|
||||
11
simple_text_board/src/schema.rs
Normal file
11
simple_text_board/src/schema.rs
Normal file
|
|
@ -0,0 +1,11 @@
|
|||
table! {
|
||||
posts (id) {
|
||||
id -> Integer,
|
||||
parent -> Nullable<Integer>,
|
||||
timestamp -> Timestamp,
|
||||
author -> Text,
|
||||
email -> Text,
|
||||
title -> Text,
|
||||
content -> Text,
|
||||
}
|
||||
}
|
||||
|
|
@ -3,9 +3,6 @@
|
|||
{% block content %}
|
||||
<h1>simple text board</h1>
|
||||
<h2>create a post</h2>
|
||||
{% if flash %}
|
||||
<p>{{ flash }}</p>
|
||||
{% endif %}
|
||||
<form action="/create" method="post" accept-charset="utf-8">
|
||||
<label for="author">author name</label>
|
||||
<input type="text" placeholder="author" name="author" required>
|
||||
|
|
@ -17,9 +14,9 @@
|
|||
<input type="text" placeholder="title" name="title" required>
|
||||
|
||||
<label for="content">content</label>
|
||||
<textarea type="text" placeholder="content" name="content" rows="8" cols="50" required>
|
||||
</textarea>
|
||||
<textarea type="text" placeholder="content" name="content" rows="8" cols="50" required></textarea>
|
||||
|
||||
<button type="submit">create</button>
|
||||
{% if flash %}<p>{{ flash }}</p>{% endif %}
|
||||
</form>
|
||||
{% endblock content %}
|
||||
|
|
|
|||
Loading…
Reference in a new issue