Khmer Web: Rental Bicycle App: Sort Data Functionality

តាមធម្មតា បណ្តាទិន្នន័យទាំងឡាយ ដែលយើងបញ្ចូលទៅក្នុងមូលដ្ឋានទិន្នន័យ គ្មានលំដាប់លំដោយច្បាស់លាស់នោះទេ គឺទីតាំងរបស់វា អាស្រ័យទៅតាមកាលបរិច្ឆេទនៃការបញ្ចូលទិន្នន័យ។ ក៏ប៉ុន្តែ មូលដ្ឋានទិន្នន័យ SQL ផ្តល់លទ្ធភាពអោយយើងអាចតំរៀបទិន្នន័យទាំងនោះទៅតាមលំដាប់ដំដោយពីតូចទៅធំ ឬពីធំទៅតូច ទៅតាមបំណងប្រាថ្នារបស់យើងបានគ្រប់ពេលវេលា។ ពិនិត្យកម្មវិធីខាងក្រោមនេះ៖

<!--\views\index.tpl-->
 
%include("./partials/header.tpl")
 
<style>
 
</style>
 
<div class="main" id="main">
  <div class="content" id="content">
    <div class="top-widget">
    <span>BICYCLES</span><input onclick="location.href='/bikeform'" type="button" value="Add Bicycle">
    </div>
    <div class="bottom-widget">
      <span>
        <select id="bikekey">
          <option value="Brand">Brand</option>
          <option value="Country">Country</option>
          <option value="Year">Year</option>
          <option value="Amount">Amount</option>
          <option value="Price">Price</option>
        </select>
        <input onclick="bicycle.sortBicycle()" type="button" value="Sort">
      </span>
      <span class="search">
        <input type="text"><input type="button" value="Search">
      </span>
    </div><!--bottom-widget-->
    <div id="table"></div>
    <script>bicycle.showBicycle({{!data['bicycles']}}, {{!data['sortIndex']}})</script>
  </div><!--content-->
 
  %include("./partials/sidebar.tpl")
 
</div><!--main-->
 
%include("./partials/footer")

#\models\bicycledb.py
import sqlite3
 
def insert(*bicycle):
  conn = sqlite3.connect('sqlite.db')
  cursor = conn.cursor()
 
  sql ='''CREATE TABLE IF NOT EXISTS BICYCLE(
    BRAND TEXT,
    COUNTRY TEXT,
    YEAR INT,
    AMOUNT INT,
    PRICE FLOAT
  )
  '''
 
  cursor.execute(sql)
 
  cursor.execute("INSERT INTO BICYCLE VALUES (?, ?, ?, ?, ?)", bicycle)
   
  conn.commit()
  conn.close()
 
 
def select():
  conn = sqlite3.connect('sqlite.db')
  conn.execute("VACUUM")
  cursor = conn.cursor()
 
  sql ='''CREATE TABLE IF NOT EXISTS BICYCLE(
    BRAND TEXT,
    COUNTRY TEXT,
    YEAR INT,
    AMOUNT INT,
    PRICE FLOAT
  )
  '''
 
  cursor.execute(sql)
 
  cursor.execute("SELECT * from BICYCLE")
 
  bicycles = cursor.fetchall()
   
  conn.commit()
  conn.close()
 
  return bicycles
 
def edit(id):
  conn = sqlite3.connect('sqlite.db')
  cursor = conn.cursor()
 
  cursor.execute("SELECT * from BICYCLE WHERE ROWID = " + str(id))
 
  bicycle = cursor.fetchone()
   
  conn.commit()
  conn.close()
 
  return bicycle
 
 
def update(*args):
  conn = sqlite3.connect('sqlite.db')
  cursor = conn.cursor()
 
  sql = "UPDATE BICYCLE SET BRAND=?, COUNTRY=?, YEAR=?, AMOUNT=?, PRICE=? WHERE ROWID=?"
   
  cursor.execute(sql, args)
   
  conn.commit()
  conn.close()
 
def delete(id):
  conn = sqlite3.connect('sqlite.db')
  cursor = conn.cursor()
 
  cursor.execute("DELETE FROM BICYCLE WHERE ROWID=?", (id,))
 
  conn.commit()
  conn.close()
 
def sort(brand):
  conn = sqlite3.connect('sqlite.db')
  cursor = conn.cursor()
   
  cursor.execute("SELECT * from BICYCLE ORDER BY " + brand)
  bicycles = cursor.fetchall()
 
  conn.commit()
  conn.close()
 
  return bicycles

#\controllers\bikeform.py
import config, re, json
from bottle import template, route, request, redirect
from models import bicycledb
 
@route("/bikeform")
def renderForm():
  if 'rowedit' in config.kargs:
    del config.kargs['rowedit']
 
  return template('bikeform', data=config.kargs)
 
@route("/bikeform/edit/<id>")
def editForm(id):
  config.kargs['rowedit'] = bicycledb.edit(id)
  config.kargs['id'] = id
  return template('bikeform', data=config.kargs)
 
@route("/bikeform/delete/<id>")
def deleteForm(id):
  config.kargs['id'] = id
  bicycledb.delete(id)
  redirect('/')
 
@route("/bicycle/<brand>/<sortIndex>")
def sortBicycle(brand,sortIndex):
  config.kargs['bicycles'] = json.dumps(bicycledb.sort(brand))
  config.kargs['sortIndex'] = sortIndex
  return template('index', data=config.kargs)
 
@route("/bikeform", method="POST")
def getFormData():
  brand = request.forms.get("fbrand")
  country = request.forms.get("fcountry")
  year = request.forms.get("fyear")
  amount = request.forms.get("famount")
  price = request.forms.get("fprice")
 
  if not re.findall("[a-zA-Z]", country):
    config.kargs['message'] = "Country name could contain only letter."
    return template('bikeform', data=config.kargs)
 
  elif not (re.findall("[0-9]", year) and re.findall("[0-9]", amount)):
    config.kargs['message'] = "Year and amount must be whole number."
    return template('bikeform', data=config.kargs)
 
  elif not (re.findall(r"[-+]?\d*\.\d+|\d+", price)):
    config.kargs['message'] = "Price must be a number."
    return template('bikeform', data=config.kargs)
 
  else:
    if 'rowedit' in config.kargs:
      bicycledb.update(brand, country, int(year), int(amount), float(price), config.kargs['id'])
      del config.kargs['rowedit']
      redirect('/')
 
    else:
      bicycledb.insert(brand, country, int(year), int(amount), float(price))
      return template('bikeform', data=config.kargs)

GitHub: https://github.com/Sokhavuth/Rental-Bicycle-App
Heroku: https://khmerweb-rba.herokuapp.com/