This is an idea for a Twitter clone for programmers, similar to how Dribbble is twitter for designers. It'll most likely not feature any images other than people's avatars, and no videos, or audio. Just text. 'Cause we're coders.
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 

141 lines
3.7 KiB

package admin
import (
"reflect"
"fmt"
"zedshaw.games/webapp/data"
_ "github.com/mattn/go-sqlite3"
sq "github.com/Masterminds/squirrel"
)
func SearchTable(search string, table string, the_type reflect.Type, limit uint64, page uint64) ([]any, error) {
var results []any
like := fmt.Sprint("%", search, "%")
builder := sq.Select("*").
Limit(limit).
Offset(limit * page).
From(table)
field_num := the_type.NumField()
var or_clause sq.Or
for i := 0; i < field_num; i++ {
tag := the_type.Field(i).Tag.Get("db")
or_clause = append(or_clause, sq.Like{tag: like})
}
builder = builder.Where(or_clause)
sql_query, args, err := builder.ToSql()
fmt.Println("-------------- SQL QUERY:", sql_query);
if err != nil { return results, err }
// BUG: refactor this to share a common func with SelectTable
rows, err := data.DB.Queryx(sql_query, args...)
if err != nil { return results, err }
defer rows.Close()
for rows.Next() {
the_data := reflect.New(the_type).Interface()
err = rows.StructScan(the_data)
if err != nil { return results, err }
results = append(results, the_data)
}
return results, rows.Err()
}
func SelectTable(table string, the_type reflect.Type, limit uint64, page uint64) ([]any, error) {
var results []any
sql_query, args, err := sq.Select("*").Limit(limit).Offset(limit * page).From(table).ToSql()
if err != nil { return results, err }
rows, err := data.DB.Queryx(sql_query, args...)
if err != nil { return results, err }
defer rows.Close()
for rows.Next() {
the_data := reflect.New(the_type).Interface()
err = rows.StructScan(the_data)
if err != nil { return results, err }
results = append(results, the_data)
}
return results, rows.Err()
}
func Get(table string, the_type reflect.Type, id int64) (reflect.Value, error) {
sql_query, args, err := sq.Select("*").From(table).Where(sq.Eq{"id": id}).ToSql()
if err != nil { return reflect.New(nil), err }
the_data := reflect.New(the_type)
err = data.DB.Get(the_data.Interface(), sql_query, args...)
// BUG: not sure if Elem or returning the reflect.New is better
return the_data.Elem(), err
}
func Delete(table string, id int64) error {
sql_query, args, err := sq.Delete(table).Where(sq.Eq{"id": id}).ToSql()
if err != nil { return err }
_, err = data.DB.Exec(sql_query, args...)
return err
}
func Insert(table string, value reflect.Value) (int64, int64, error) {
type_of := value.Type()
field_num := value.NumField()
var columns []string
var values []any
for i := 0; i < field_num; i++ {
field := value.Field(i)
tag := type_of.Field(i).Tag.Get("db")
if tag == "id" { continue }
columns = append(columns, tag)
values = append(values, field.Interface())
}
builder := sq.Insert(table).Columns(columns...).Values(values...)
sql_query, args, err := builder.ToSql()
result, err := data.DB.Exec(sql_query, args...)
id, err := result.LastInsertId()
if err != nil { return -1, -1, err }
count, err := result.RowsAffected()
if err != nil { return id, -1, err }
return id, count, err
}
func Update(table string, value reflect.Value) error {
builder := sq.Update(table)
type_of := value.Type()
field_num := value.NumField()
for i := 0; i < field_num; i++ {
field := value.Field(i)
tag := type_of.Field(i).Tag.Get("db")
// skip update of id to avoid replacing it
if tag == "id" { continue }
builder = builder.Set(tag, field.Interface())
}
builder = builder.Where(sq.Eq{"id": value.FieldByName("Id").Interface()})
sql_query, args, err := builder.ToSql()
fmt.Println("UPDATE QUERY", sql_query, args)
if err != nil { return err}
_, err = data.DB.Exec(sql_query, args...)
return err
}