Hi everyone, in todays article I will talk about implementing the Twitter Oauth2 Login flow in Flutter projects using the twitter_login dependency. It took me a while to discover how to implement because they still working in this Oauth v2 version of Twitter Auth…

I am developing an App in Flutter right now and an important subject always comes to our minds: How I can make my app grow in several countries and regions? In this article I will talk a little bit about Localization and Internationalization and how its important to use in…

Hello everyone, this article today is a little out of scope for my posts, usually extremely technical. We are going to talk about the tax that Medium charges from Non-US residents, like me… I live in Portugal and never paid close attention for the tax applied, which is 30% and…

Keeping up with the database theme, we talk about Flyway and now we will talk a little bit about Liquibase. What is Liquibase? Liquibase is a powerfull OpenSource tool that helps you to track, version and deploy database changes very fast and easy. With Liquibase you maintain the track of the changes in…

In this article, I will explain a little how I use Flyway in my SpringBoot projects. If you don’t know what is Flyway, see this introductory text. For the scope of this project, we will create a Rest API to list some Countries and then the States of this Country…

Today I will tell the best useful websites and tools that I use on develop my projects. Recently I start a new huge project (more about that soon :) ) to try to make some extra money and also increase my tech skills. …

What it is? Flyway is an open-source database migration tool. It strongly favors simplicity and convention over configuration. It is based around just 7 basic commands: Migrate, Clean, Info, Validate, Undo, Baseline and Repair. We can use Flyway to maintain and organize our SQL scripts of an Application. Lets see in practice. In…

Really quick post this time… I came across this following error on developing a project with Liferay 7.3.5 when opening the web admin console on Blogs area: And in the logs (the relevant part): Caused by: java.lang.NoClassDefFoundError: com.liferay.expando.kernel.model.ExpandoBridge cannot be found by com.liferay.blogs.api_6.4.5…

So guys, in the part 1 of this article we saw how to digitally sign a pdf document using PKCS7, iText 2.1.7 (2009) and a hash to be signed. As the requirement says, we should call a webservice sending a hash of the document to be signed, and this webservice…