tutorials: more blog fixes (#5657)
parent
0626ac2901
commit
fbfd92a899
|
@ -64,14 +64,13 @@ fn main() {
|
|||
vweb.run<App>(8081)
|
||||
}
|
||||
|
||||
fn (mut app App) index() {
|
||||
fn (mut app App) index() vweb.Result {
|
||||
app.vweb.text('Hello, world from vweb!')
|
||||
return vweb.Result{}
|
||||
}
|
||||
|
||||
pub fn (app &App) init() {}
|
||||
pub fn (app &App) init_once() {}
|
||||
pub fn (app &App) reset() {}
|
||||
|
||||
```
|
||||
|
||||
Run it with
|
||||
|
@ -115,7 +114,6 @@ text, which isn't frequently used in websites.
|
|||
|
||||
### HTML View
|
||||
|
||||
|
||||
Let's return an HTML view instead. Create `index.html` in the same directory:
|
||||
|
||||
```html
|
||||
|
@ -134,9 +132,9 @@ Let's return an HTML view instead. Create `index.html` in the same directory:
|
|||
and update our `index()` action so that it returns the HTML view we just created:
|
||||
|
||||
```v
|
||||
fn (mut app App) index() {
|
||||
fn (mut app App) index() vweb.Result {
|
||||
message := 'Hello, world from Vweb!'
|
||||
$vweb.html()
|
||||
return $vweb.html()
|
||||
}
|
||||
```
|
||||
|
||||
|
@ -170,48 +168,47 @@ into a single binary file together with the web application itself.
|
|||
|
||||
- All errors in the templates are guaranteed to be caught during compilation.
|
||||
|
||||
|
||||
### Fetching data with V ORM
|
||||
|
||||
Now let's display some articles!
|
||||
|
||||
We'll be using V's builtin ORM and a Postgres database. (V ORM will also
|
||||
support MySQL, SQLite, and SQL Server soon.)
|
||||
We'll be using V's builtin ORM and a SQLite database.
|
||||
(V ORM will also support MySQL, Postgre, and SQL Server soon.)
|
||||
|
||||
Create a SQL file with the schema:
|
||||
Create a SQLite file with the schema:
|
||||
```sql
|
||||
create database blog;
|
||||
drop table Article;
|
||||
|
||||
\c blog
|
||||
|
||||
drop table articles;
|
||||
|
||||
create table articles (
|
||||
id serial primary key,
|
||||
title text default '',
|
||||
text text default ''
|
||||
create table Article (
|
||||
id integer primary key,
|
||||
title text default "",
|
||||
text text default ""
|
||||
);
|
||||
|
||||
insert into articles (title, text) values (
|
||||
'Hello, world!',
|
||||
'V is great.'
|
||||
insert into Article (title, text) values (
|
||||
"Hello, world!",
|
||||
"V is great."
|
||||
);
|
||||
|
||||
insert into articles (title, text) values (
|
||||
'Second post.',
|
||||
'Hm... what should I write about?'
|
||||
insert into Article (title, text) values (
|
||||
"Second post.",
|
||||
"Hm... what should I write about?"
|
||||
);
|
||||
```
|
||||
|
||||
Run the file with `psql -f blog.sql`.
|
||||
Run the file with `sqlite3 blog.db < blog.sqlite`.
|
||||
|
||||
|
||||
Add a Postgres DB handle to `App`:
|
||||
Add a SQLite handle to `App`:
|
||||
|
||||
```v
|
||||
import sqlite
|
||||
|
||||
struct App {
|
||||
pub mut:
|
||||
vweb vweb.Context
|
||||
db pg.DB
|
||||
db sqlite.DB
|
||||
}
|
||||
```
|
||||
|
||||
|
@ -221,7 +218,10 @@ Modify the `init_once()` method we created earlier to connect to a database:
|
|||
|
||||
```v
|
||||
pub fn (mut app App) init_once() {
|
||||
db := sqlite.connect(':memory:') or { panic(err) }
|
||||
db := sqlite.connect(':memory:') or { panic(err) }
|
||||
db.exec('create table `Article` (id integer primary key, title text default "", text text default "")')
|
||||
db.exec('insert into Article (title, text) values ("Hello, world!", "V is great.")')
|
||||
db.exec('insert into Article (title, text) values ("Second post.", "Hm... what should I write about?")')
|
||||
app.db = db
|
||||
}
|
||||
```
|
||||
|
@ -233,7 +233,7 @@ Create a new file `article.v`:
|
|||
|
||||
|
||||
```v
|
||||
|
||||
// article.v
|
||||
module main
|
||||
|
||||
struct Article {
|
||||
|
@ -342,6 +342,7 @@ pub fn (mut app App) new_article() vweb.Result {
|
|||
title: title
|
||||
text: text
|
||||
}
|
||||
println(article)
|
||||
sql app.db {
|
||||
insert article into Article
|
||||
}
|
||||
|
|
|
@ -1,22 +0,0 @@
|
|||
create database blog;
|
||||
|
||||
\c blog
|
||||
|
||||
drop table articles;
|
||||
|
||||
create table articles (
|
||||
id serial primary key,
|
||||
title text default '',
|
||||
text text default ''
|
||||
);
|
||||
|
||||
insert into articles (title, text) values (
|
||||
'Hello, world!',
|
||||
'V is great.'
|
||||
);
|
||||
|
||||
insert into articles (title, text) values (
|
||||
'Second post.',
|
||||
'Hm... what should I write about?'
|
||||
);
|
||||
|
|
@ -0,0 +1,17 @@
|
|||
drop table Article;
|
||||
|
||||
create table Article (
|
||||
id integer primary key,
|
||||
title text default "",
|
||||
text text default ""
|
||||
);
|
||||
|
||||
insert into Article (title, text) values (
|
||||
"Hello, world!",
|
||||
"V is great."
|
||||
);
|
||||
|
||||
insert into Article (title, text) values (
|
||||
"Second post.",
|
||||
"Hm... what should I write about?"
|
||||
);
|
|
@ -15,26 +15,27 @@ fn main() {
|
|||
vweb.run<App>(8081)
|
||||
}
|
||||
|
||||
fn (mut app App) index_text() {
|
||||
/*
|
||||
fn (mut app App) index_text() vweb.Result {
|
||||
app.vweb.text('Hello, world from vweb!')
|
||||
return vweb.Result{}
|
||||
}
|
||||
|
||||
/*
|
||||
fn (app &App) index_html() {
|
||||
message := 'Hello, world from vweb!'
|
||||
$vweb.html()
|
||||
fn (app &App) index_html() vweb.Result {
|
||||
message := 'Hello, world from Vweb!'
|
||||
return $vweb.html()
|
||||
}
|
||||
*/
|
||||
|
||||
fn (app &App) index() vweb.Result {
|
||||
articles := app.find_all_articles()
|
||||
return $vweb.html()
|
||||
}
|
||||
|
||||
pub fn (mut app App) init_once() {
|
||||
db := sqlite.connect(':memory:') or {
|
||||
db := sqlite.connect('blog.db') or {
|
||||
panic(err)
|
||||
}
|
||||
db.exec('create table `Article` (id integer primary key, title text default "", text text default "")')
|
||||
app.db = db
|
||||
}
|
||||
|
||||
|
@ -49,10 +50,10 @@ pub fn (mut app App) new_article() vweb.Result {
|
|||
title := app.vweb.form['title']
|
||||
text := app.vweb.form['text']
|
||||
if title == '' || text == '' {
|
||||
app.vweb.text('Empty text/titile')
|
||||
app.vweb.text('Empty text/title')
|
||||
return vweb.Result{}
|
||||
}
|
||||
article := Article{
|
||||
article := Article {
|
||||
title: title
|
||||
text: text
|
||||
}
|
||||
|
@ -60,7 +61,7 @@ pub fn (mut app App) new_article() vweb.Result {
|
|||
sql app.db {
|
||||
insert article into Article
|
||||
}
|
||||
return app.vweb.redirect('/article/')
|
||||
return app.vweb.redirect('/')
|
||||
}
|
||||
|
||||
pub fn (mut app App) articles() {
|
||||
|
|
|
@ -8,9 +8,8 @@
|
|||
<b>@article.title</b> <br>
|
||||
@article.text
|
||||
</div>
|
||||
<br>
|
||||
@end
|
||||
<br>
|
||||
<a href='/new'>New article</a>
|
||||
</body>
|
||||
</html>
|
||||
|
||||
|
|
Loading…
Reference in New Issue