In the previous part of React JSX series, we took a look at how to correctly loop through arrays and objects in React. In this article, we'll help you learn how to write conditional statements when rendering components.
Everything below applies to React Native as well!
While learning to code in React, most of us have probably tried this and realized it won't work:
render() {
In the previous part of React JSX series, we took a look at how to correctly loop through arrays and objects in React. In this article, we'll help you learn how to write conditional statements when rendering components.
Everything below applies to React Native as well!
While learning to code in React, most of us have probably tried this and realized it won't work:
render() {
Bundler makes sure that Ruby applications always use the exact gems and versions that you need while keeping a consistent environment and gem dependencies satisfied. This is done by ensuring that the gems you need are present in the development, staging and the production.
With this three simple steps you will get your application up and running with bundler:
$gem install bundlerBundler makes sure that Ruby applications always use the exact gems and versions that you need while keeping a consistent environment and gem dependencies satisfied. This is done by ensuring that the gems you need are present in the development, staging and the production.
With this three simple steps you will get your application up and running with bundler:
$gem install bundler
If you are new to writing RSpec tests in Rails using FactoryGirl (bot), you can ask yourself what is the difference between create , build and build_stubbed. In this article, we will do our best to help you understand them better.
Let's say we are testing a valid profile creation:
FactoryBot.define do
factory :profile do
user
If you are new to writing RSpec tests in Rails using FactoryGirl (bot), you can ask yourself what is the difference between create , build and build_stubbed. In this article, we will do our best to help you understand them better.
Let's say we are testing a valid profile creation:
FactoryBot.define do
factory :profile do
user
Usually, when developing a website, you'll need some dynamical rendering, like a listing of items, showing some element under a certain condition and so on.
You're all aware of the standard JS syntax - a for loop, or an if / else - but when you try to write those under a render method in React, you'll most likely get some weird looking errors.
In this, the first part of React JSX series, we will take a look at how to correctly loop through arrays the reactive way.
Please note that all of the examples below apply as well to React Native!
Usually, when developing a website, you'll need some dynamical rendering, like a listing of items, showing some element under a certain condition and so on.
You're all aware of the standard JS syntax - a for loop, or an if / else - but when you try to write those under a render method in React, you'll most likely get some weird looking errors.
In this, the first part of React JSX series, we will take a look at how to correctly loop through arrays the reactive way.
Please note that all of the examples below apply as well to React Native!
RSpec is an awesome tool for testing Rails apps. It is a hugely popular BDD-oriented (Behavior Driven Development) testing framework in the Ruby community.
It makes writing tests simpler, more expressive and easier to maintain!
First, you'll need to install RSpec but you'll also need Database Cleaner to help hold things together and ensure a clean state during tests. Add the following gems to the: test and: development groups in your Gemfile and then run bundle install:
group :development, :test do
RSpec is an awesome tool for testing Rails apps. It is a hugely popular BDD-oriented (Behavior Driven Development) testing framework in the Ruby community.
It makes writing tests simpler, more expressive and easier to maintain!
First, you'll need to install RSpec but you'll also need Database Cleaner to help hold things together and ensure a clean state during tests. Add the following gems to the: test and: development groups in your Gemfile and then run bundle install:
group :development, :test do
Scaffolding in Ruby on Rails refers to the auto-generation of a set of a model, views and a controller usually used for a single database table.
For example, you can auto-generate a ready to use controller, model, and views with a full CRUD (Create, Read, Update, Delete) web interface for the Story table using the following command:
$rails generate scaffold Story title:string content:text
It's way easier to do this, instead of coding everything yourself, it saves you a lot of time!
Scaffolding in Ruby on Rails refers to the auto-generation of a set of a model, views and a controller usually used for a single database table.
For example, you can auto-generate a ready to use controller, model, and views with a full CRUD (Create, Read, Update, Delete) web interface for the Story table using the following command:
$rails generate scaffold Story title:string content:text
It's way easier to do this, instead of coding everything yourself, it saves you a lot of time!
