Starting a project : design phase

Before jumping right into the code, first you have to think a bit about what defines your project. It’s the design phase.

User stories
Database schema
Mockups / Design
Routes
Create the project

Creating project

Create

```bash
cd/user/code
rails new \
  -d postgresql \
  -m https://raw.githubusercontent.com/lewagon/rails-templates/master/devise.rb \
  CHANGE_THIS_TO_YOUR_RAILS_APP_NAME
gh repo create
git push origin master
```

retrieve the project

```bash
git clone git@github.com:username/PROJECT-NAME.git
cd PROJECT-NAME
bundle install
yarn install
rails db:create db:migrate
touch .env
echo '.env*' >> .gitignore # if not already in .gitignore
```

Finish bootstraping the app

Add Devise (unless you used the devise template!)

Add models

```bash
rails g model Product name:type available:type user:references
```

Add a field to a model

```bash
rails g migration AddFieldToModel field:type
```

```types
:string, :text, :integer, :float, :decimal, :datetime, :timestamp, :time, :date, :boolean
```

Add controllers

```bash
rails g controller products index show new create edit update destroy
```

Write all the routes Add some seeds + configure image upload (if needed) Configure your domain name Making a feature

Define the route(s) Generate and implement the controller and its action(s) Implement the view ⚠ Only create the controller you need for the specific feature you work on. Do not create all controllers at once! ⚠ And only create the action(s) needed by your feature, not all the actions of the controller!
The steps become:

Find the route(s) via a rails routes Deduce the name of the controller and action(s) Generate the controller and its action(s) with the –skip-routes option We use the –skip-routes option in order to not pollute the config/routes.rb file.

Fetching new changes After finishing a feature, when you go back on master branch, you’ll fetch the latest changes:
git pull origin master Each time you pull changes from master, there are operations that you might have to do. In the listing of the files, if you see:

the Gemfile, then run a bundle install the package.json file, then run yarn install any file in db/migrate/ folder, then run rails db:migrate

Errors at the beginning

If you have an error

check maybe some terminal commands

```bash
gem update
brew upgrade
```

Ror start