1.First of all I want to realize two-step authentication of login by strengthening security measures by exposing a certain in-house system to the outside. A...
Introduction This time about the difference between render and redirect_to which are often used in Rails.
Introduction A composition about tax is your homework? I’ve done my homework. For the time being, I searched for the composition that won the award in the p...
This is an article to tell you that it was very nice to move from Java to Kotlin. Java drawbacks I was programming in Java a while back. But Java has its dr...
Introduction It is expected that you will continue to encounter implementations that do not display the toolbar only for specific fragments in Android devel...
environment -OS: Ubuntu 20.04 -Ruby version: 2.5.8
Introduction ・I made a flea market app by team development of a certain programming school. ・It was very difficult to implement the product category functio...
How to apply thymeleaf changes to the browser immediately with # Spring Boot + maven
I will post it somehow. I was writing a program in ruby, but I realized that I still have a poor understanding of sequences. For example this
I once published the article, but I reviewed the design and re-posted it.
Check H2 database on Web I often use the H2 database when doing private projects, I will write a method to check the H2 database on the Web.
I learned about the basic language specifications of Ruby such as objects, classes and methods again in the Metapro book, so I wrote it down as a memorandum
When I was reading the code, I hit a class called AtomicReference, so I checked it.
▼This curriculum describes the test code of the application created in the curriculum of the previous chapter.
[Java] [Spring Boot] The story that the bean of the class with the ConfigurationProperties annotation was not found
What is Configuration Properties One of the methods to handle the value of the setting file in Spring Boot by the application.
[Ruby] [Rails] What to do when rails db:migrate cannot be done because there is no table to be referenced by the foreign key
Error location ``` terminal rails aborted! StandardError: An error has occurred, all later migrations canceled:
For efficient programming, I think you will use an IDE that is easy for you to use.
Introduction While studying Ruby on Rails, I lost track of various words and concepts regarding data manipulation, so I will organize it as a memorandum.
There was a requirement to get a thread dump on a Windows server running an app with JRE. There are many things to think about
AtCoder Beginner Contest 175 Thank you for your hard work! Official page
Why did you decide to use overcommit? I want to automatically execute tests and static analysis Using git hooks, you can execute a specific script at t...
[Ruby] RailsTutorial record and memorandum #1 From installation to hello_app deployment + error handling
It is a learning record. If you proceed as it is, there are parts that get stuck, so I will write the correspondence.
This series Rails Tutorial record and memorandum.
App overview It is an application that allows you to search for your ideal gym from the area you live in (currently only the wards in Osaka city) or categor...