3ee90b30d8
* SQLite FTS example * refactor: remove via cfg chaining --------- Co-authored-by: Joao Goncalves <joao.goncalves01@gmail.com>
110 lines
2.2 KiB
Go
110 lines
2.2 KiB
Go
package main
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import (
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"database/sql"
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"fmt"
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"log"
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"time"
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"github.com/go-via/via"
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"github.com/go-via/via/h"
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_ "github.com/mattn/go-sqlite3"
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)
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type DataSource interface {
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Open()
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Query(str string) (*sql.Rows, error)
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Close() error
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}
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type ShakeDB struct {
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db *sql.DB
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findByTextStmt *sql.Stmt
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}
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func (shakeDB *ShakeDB) Prepare() {
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db, err := sql.Open("sqlite3", "shake.db")
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if err != nil {
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log.Fatal(err)
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}
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stmt, err := db.Prepare(`select play,player,plays.text
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from playsearch inner join plays on playsearch.playsrowid=plays.rowid where playsearch.text match ?
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order by plays.play, plays.player limit 200;`)
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if err != nil {
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log.Fatal(err)
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}
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shakeDB.db = db
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shakeDB.findByTextStmt = stmt
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}
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func (shakeDB *ShakeDB) Query(str string) (*sql.Rows, error) {
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return shakeDB.findByTextStmt.Query(str)
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}
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func (shakeDB *ShakeDB) Close() {
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if shakeDB.db != nil {
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shakeDB.db.Close()
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shakeDB.db = nil
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}
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}
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func main() {
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v := via.New()
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v.Config(via.Options{
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DevMode: true,
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DocumentTitle: "Search",
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LogLvl: via.LogLevelWarn,
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})
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v.AppendToHead(
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h.Link(h.Rel("stylesheet"), h.Href("https://cdn.jsdelivr.net/npm/@picocss/pico@2/css/pico.min.css")),
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h.StyleEl(h.Raw(".no-wrap { white-space: nowrap; }")),
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)
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shakeDB := &ShakeDB{}
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shakeDB.Prepare()
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defer shakeDB.Close()
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v.Page("/", func(c *via.Context) {
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query := c.Signal("whether tis")
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var rowsTable H
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runQuery := func() {
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qry := query.String()
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start := time.Now()
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rows, error := shakeDB.Query(qry)
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fmt.Println("query ", qry, "took", time.Since(start))
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if error != nil {
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rowsTable = h.Div(h.Text("Error: " + error.Error()))
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} else {
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table, err := RenderTable(rows, []string{"no-wrap", "no-wrap", ""})
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if err != nil {
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rowsTable = h.Div(h.Text("Error: " + err.Error()))
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} else {
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rowsTable = table
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}
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}
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}
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runQueryAction := c.Action(func() {
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runQuery()
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c.Sync()
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})
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runQuery()
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c.View(func() h.H {
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return h.Div(
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h.H2(h.Text("Search")), h.FieldSet(
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h.Attr("role", "group"),
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h.Input(
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h.Type("text"),
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query.Bind(),
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h.Attr("autofocus"),
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runQueryAction.OnKeyDown("Enter"),
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),
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h.Button(h.Text("Search"), runQueryAction.OnClick())),
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rowsTable,
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)
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})
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})
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v.Start()
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}
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