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Introducing the Project
3:34You will use the Sequelize ORM and Express to build a simple CRUD application that's connected to a SQL database. You will use Sequelize methods to perform CRUD operations within Express routes (using HTTP methods like get and post) to manage the data in the database.
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Hi everyone, Gil here,
a JavaScript instructor at Treehouse.
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In previous lessons, you learned
how to use the Sequelize ORM to
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interface with sequel based databases
within a Node JS application.
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You also learned how to work with
the Express Web application framework for
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Node to build dynamic web applications.
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In this workshop,
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you will bring together much of what
you've learned about Sequelize and
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Express to build a simple CRUD application
that is connected to a Sequel database.
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You will use the method Sequalize provides
to perform CRUD operations within Express
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routes using HTTP methods like Get and
Post to manage the data and the database.
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In addition, you'll work with
the sequelize/cli a helpful command line
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interface for sequelize to initialize
all the configuration code,
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folders and helpers needed for
the application.
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The project you will build and this
workshop is a simple blog application,
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it's going to have a page
that lists all the articles,
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a create article page an edit article page
as well as a way to delete an article.
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So we're essentially performing all
the CRUD or create, read, update and
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delete operations using a web interface.
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And you'll be able to apply what you learn
while building this project to just about
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any node or express and sequel
application you create moving forward.
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To get started and code along with me,
download the project files with this video
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and open the starter files in
your favorite text editor.
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I'm using Visual Studio Code.
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Once you open the starter files, run the
command MPM install in your terminal or
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console to install all
the project dependencies.
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After the dependencies
finished downloading and
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installing, run,
MPM start to start the application.
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And you can view the app in
the browser on localhost port 3000.
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So this is the beginning state
of the blog application.
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To get it started,
I used the express application
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generator tool to create the express
app which I then modified.
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The express generator is a command line
tool that makes it easy to start new apps.
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It sets up much of the boolar plain
code needed to build an express
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app like starting a new server instance,
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configuring a view engines,
setting up air handling and more.
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The structure of the generated express
application contains folders such as bin,
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public, routes and views which you will
learn about as you build the application.
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You're can learn more about
the express generator tool and
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its helpful command options in
the teachers notes with this video.
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The focus of this
workshop in on Sequelize,
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so we're going to work on connecting
to a data base from the express app and
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write all the data base calls
within the route handler functions.
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I've already included all the view
templates inside the views folder, and
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starter code to handle the routes
inside the routes folder.
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For example, the app uses the pug
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templating engine to
generate all the views.
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And the articles.js file inside the routes
folder, holds all the routes to create,
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read, update and
delete articles in the app.
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Both the index and
articles routes are imported into app.js,
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then passed to the Express app
via these app.use methods.
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We'll add more inside the route handlers
as we implement the database code.
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Before moving on to the next step,
go ahead and
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familiarize yourself with the routes and
views.
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Once you're ready,
you'll start by setting up and
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connecting to a sequel lite database.
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To be successful in this workshop that
you should be familiar with using
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the Sequelize ORM as well as
the Express framework and
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the async await syntax for
working with promises.
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So be sure to review the teachers notes
with this video if you need a refresher on
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any of these topics.
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