Devise Installation Part 2

Quick reference

• 00:04 Okay, in the last video, we started to install Devise, and
• 00:08 we got all of these directories created for us.
• 00:10 Now, before we dive into them,
• 00:12 we need to do a couple more things to finish installing Devise.
• 00:15 So go back to the Devise documentation, and we got this far in the last video.
• 00:20 Now, we need to come down here, we need to create an actual model for our app.
• 00:24 And a model, as you remember in the MVC diagram earlier, model is database stuff.
• 00:29 So what we need to do here is create a database.
• 00:32 So pretty easy, copy that, come back, paste.
• 00:34 Now, we wanna change this word MODEL, this is just placeholder.
• 00:38 We wanna name this something else.
• 00:39 So what are we doing here in our app?
• 00:41 We're allowing people to become users of our website.
• 00:44 A user logs in, logs out, does stuff like that.
• 00:47 So let's call our model user.
• 00:49 So if we hit Enter, Devise is creating all this stuff for us.
• 00:53 And now check this out.
• 00:54 If we come over to our db directory, that's database, and
• 00:58 we click on this migrate, we now have this migration here.
• 01:01 And Devise just created this for us.
• 01:03 Any time you do database work in Ruby on Rails, it's a two-step process.
• 01:07 You create a migration, then you push the migration to the database.
• 01:10 And that might seem like a little bit complicated now, but
• 01:12 as we do it a couple times, it'll make a lot of sense.
• 01:14 And this makes it very easy.
• 01:16 And if you look through this migration,
• 01:18 you can see some of the stuff that we'll be creating.
• 01:20 Our users will be able to have an email, password to sign in, sign out, and
• 01:24 do all kinds of stuff.
• 01:26 Now, one change we wanna make before we do anything else, we need to add something.
• 01:31 And right here, I'm just gonna make a space and
• 01:34 type in t.string, space, and let's call this name.
• 01:38 And then give this a null: false, default.
• 01:46 And basically I just copied this, line but replaced email with name.
• 01:52 We want our users to be able to list their name, as well as their email address.
• 01:56 So save this, go ahead and close it.
• 01:58 So we've created a migration, now we need to push it into the database.
• 02:03 And we do that with this rake db migrate command.
• 02:07 So copy this, come back here, paste that in and hit Enter.
• 02:13 And it looks like it worked.
• 02:15 Now we can come to this db schema file, and
• 02:19 this shows us at a glace what our database currently has.
• 02:23 It's named users, it has email, name, password and all of this stuff.
• 02:26 So just like that, we now have a fully functioning database.
• 02:30 Actually, there is one more step.
• 02:32 We pushed the migration to our local database,
• 02:34 we also need to push this migration up to Heroku.
• 02:37 Because Heroku, if you remember, it uses the PG database,
• 02:40 not the SQLite3 database that we're using in our development environment.
• 02:45 So it's a similar command to the one we just did,
• 02:49 that rake db migrate, instead it's heroku run rake db:migrate.
• 02:56 So the last command was rake db migrate, now it's heroku run rake db:migrate.
• 03:02 And that's just the convention to use Heroku.
• 03:04 And you can see, now this is pushing our database up to Heroku,
• 03:08 it can take 30 seconds to a minute or so.
• 03:12 So we're pretty much done now, that's all of the installation instructions.
• 03:16 Now we can come back and take a look at all of these directories, and
• 03:20 folders, and files, and things and see what happened here.
• 03:23 So if we come down to our terminal and type rake routes, like we've done earlier.
• 03:28 In the past, we had one or two routes, now, look at all these routes we now have.
• 03:32 And take a look at these, user session, a new password,
• 03:36 user registration, new user registration.
• 03:39 So let's check this out, this is the path, this is the URI pattern.
• 03:44 So users/sign_up, let's copy that and
• 03:49 come to our app and paste it in.
• 03:53 You know what, we need to restart our server.
• 03:56 Whenever you add a new gem, usually you need to restart your server.
• 04:00 Give it a second to do its thing.
• 04:02 Come back here and hit reload, and boom ,now we have this sign up form.
• 04:06 We have, click this link, we have a log in form, if you forgot your password,
• 04:10 you have a forget password form.
• 04:12 So this all works right now, right out of the box.
• 04:15 It's fully functioning, and it connects to our database.
• 04:18 So if a user signs up, their name gets added to our database, and
• 04:21 it's in there forever.
• 04:22 So that's really cool.
• 04:23 In the next video, we'll start to customize these 'cause they look kinda funky
• 04:27 right now, we can make them look a little bit better.
• 04:29 But just like that, we've got Devise up and running,
• 04:31 and we have a fully functioning user authentication system that
• 04:34 would have taken, I kid you not, a team of developers months to create on their own.
• 04:38 Took us less than ten minutes to install, so really awesome, really cool.
• 04:42 And that's all for this video.

Lesson notes are only available for subscribers.