Prestashop theme alysum - add a new menu item

I wanted add an item to the menu in the alysum theme, but I was not able to do it in the FlexMenu module, because I always get an "Not Connect - Verify Network" alert, and clearing the prestashop cache did not help, so I decided to add it in the database. Simply open the db table ps_pk_flexmenu_menus and add a new record and so for ps_pk_flexmenu_menus_lang

Prestashop set Currency depending on the language (Prestashop version 1.6)

UPDATE
Based on the prestashop forum:
https://www.prestashop.com/forums/topic/52019-change-currency-automatically-when-switching-from-one-language-to-another/?p=1834832
Find ChangeCurrencyController.php and change this:

$this->context->cookie->id_currency = (int)$currency->id;

to:

$this->context->cookie->id_currency = (int)$currency->id;
$this->context->cookie->id_currency_changed = 1;

Find Tools.php and in function "switchLanguage" find and change line:

$language = new Language($id_lang);

to:

$language = new Language($id_lang);
            
            // added for hard currency linked switch
            switch($id_lang) {
                case 1: //if lang_id that's changed to currency id = 1 than...
                    Tools::switchCurrencyLinked(1);
                    break;
                case 2:
                    Tools::switchCurrencyLinked(2);
                    break;
                case 3: //and so on ....
                    Tools::switchCurrencyLinked(3);
                    break;
               }

Immediately after end of function public static function switchLanguage insert new function:

/**
     * Change cookie currency with Language when hard currency linked switch - janoo
     *
     */
     public static function switchCurrencyLinked($cookieLanguage)
    {
        global $cookie;

        if (! (int)$cookie->id_currency_changed)
        {
            $cookie->id_currency = $cookieLanguage;
            Tools::setCurrency($cookie);
        }
        else
        {
            $cookie->id_currency_changed = 0;
        }
    }

Credits goes to Devein, Chris2407 and janoo, Thanks!



OLD VERSION: In Prestashop Back Office, find ID for each currency and each language you want to use, (Language ID you can find in Back Office at "Localization -> Languages -> Edit:English" and in url you can see parameter "&id_lang=1&", the same for Currency)
than edit
classes/controller/FrontController.php in your Prestashop folder, find

$currency = Tools::setCurrency($this->context->cookie);

and add the following (so at the end it would be like this):

         if ($this->context->cookie->id_lang == 1){
           $this->context->cookie->id_currency = 2;
         }else{
           $this->context->cookie->id_currency = 1;
         }

        $currency = Tools::setCurrency($this->context->cookie);

Number "1" should be your Prestahop language ID (number "1" here is just an example), also "2" and "1" should be your Prestahop Currency ID.
This works for Prestashop version 1.6.

My personal TO READ list

Recently I have read these books and I would highly recommend them to all, not just IT people or technically skilled :-)

Ashlee Vance - Elon Musk: Tesla, SpaceX, and the Quest for a Fantastic Future

Eric Schmidt - How Google works

And some books, which I have on my TO READ List: 

Bred Stone - The Everything Store: Jeff Bezos and the Age of Amazon

Patrick Zandl - Apple: cesta k mobilům (just in Czech language)

And some non IT  books:

Patrick Zandl - Husákův děda  (just in Czech language)

Patrick Zandl - Koncernová pětiletka (just in Czech language)

Logback and Spring Boot integration

If you want to use Logback as a logging tool for your Spring Boot project, you have to set the path for your logback.xml settings in the application.properties file. Note that it is for Spring Boot in the 1.3.3 version (and later I guess). The important thing is the colon ":"

In "application.properties" file:

#Logback config file

logging.config: ${user.dir}/config/logback.xml

and the logback.xml:

<configuration debug="false">

  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">

        <!-- encoders are assigned the type ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->

    <encoder>

      <pattern>%d{HH:mm:ss.SSS} [%-5level] %logger{40} - %msg%n</pattern>

    </encoder>

  </appender>


  <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">

    <file>log/project.log</file>

    <append>true</append>

    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">

      <!-- rollover daily -->

      <fileNamePattern>log/project-%d{yyyy-MM-dd}.%i.log.gz</fileNamePattern>

      <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">

        <!-- or whenever the file size reaches 10MB -->

        <maxFileSize>40MB</maxFileSize>

      </timeBasedFileNamingAndTriggeringPolicy> 

      <!-- keep 120 days' worth of history -->

      <maxHistory>120</maxHistory>

    </rollingPolicy>

    <encoder>

      <pattern>%d{HH:mm:ss.SSS} [%-5level] %-40logger - %msg%n</pattern>

    </encoder>

  </appender>


  <root level="WARN">

    <appender-ref ref="STDOUT" />

    <appender-ref ref="FILE" />

  </root>

</configuration>

Prestashop Datatrans payment module

For one of my client, I was preparing Prestashop eshop with theme - http://promokit.eu/themes/prestashop-1-6-theme-alysum/ (which is nice, I can recommend it, also documentation and support is on good level),
and I was integrating prestahop payment module by https://www.sellxed.com/, which is connected to the datatrans payment system https://www.datatrans.ch/
It is alo nice, but somehow it stopped working in that way, that payment gateways were hidden on the checkout page (technically they were on the page, but hidden by javascript) and I was not able to make it working.
I have searched all the internet, and was preparing to contact their support, then I suddenly noticed, that on the the module configuration page (for example Datatrans VISA)

there is some switch button (Payment Form Position: Use separate page OR Use payment selection page) with description
"The payment form can be displayed directly on payment method list page or on a separate page. In some cases it does not work, when the payment form is displayed on the payment page. In this cases a separate page must be used."

So I tried to change it from default configuration (Use payment selection page) to the "Use separate page" and voila, the payment gateway appeared on the checkout page! Do it with all gateways you want to enable on the checkout page.

JSON object to PostgreSQL via Hibernate

Nice article about storing JSON object to PostgreSQL database via Hibernate
http://www.vivekpatidar.com/?p=13