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We want our slash pages path to
show a list of blog pages but

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right now our view template is
just showing a static header.

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So let's set our controller
up to load some page data so

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that we can include it in our template.

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In our pages controller, we will limit the
index method to load a list of all pages

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and store it in an instance variable.

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So assign to an instance variable @pages.

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Notice that I named the instance
variable pages plural and

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not page singular since it's going to
hold a collection of multiple pages

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then we'll call the Page.all

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class method to load all page
records from the database.

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Let's save this and refresh our browser.

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We get an error
uninitialized constant page.

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Our controller is receiving
the user's request and

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attempting to load data from the model.

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But we haven't created
our page model class yet.

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It doesn't exist.

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So we get an error when we
attempt to reference it.

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So let's create a model class
now using Rails generator.

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Just as with scaffolds and controllers
rails has a generator for models.

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The model generator will create a source
file with the model class for us.

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At the same time it will create
a migration file that will set up

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a database table to hold records for
that model.

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Stop the server if it's running and
run the command bin/rails generate model,

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because we're generating a model class and
then the name of the model class page.

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Then just as with scaffolds we can specify
a series of attributes we want page

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objects to have along with the types of
database columns that should be created to

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hold that data we want pages to have title
and body attributes just like with posts.

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And then also a slug attribute that we
can use to make human readable URLs.

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So we'll add a title attribute and give
it a type of string with a title:string.

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Then we'll hit space and
add a body attribute.

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Page bodies are of course
much longer than titles so

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we'll give it a type of
text instead of string.

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Last we'll add a slug attribute
with a type of string again.

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Hit return to run the command and
it will create files with a model and

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a migration for us.

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The model classes in app models page.rb.

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As with the post model, it's not much
to look at because all its methods

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are inherited from ApplicationRecord.

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The migration is in a file
within the db migrate directory.

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It has commands to create a Pages table

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with all of the fields we specified on
the command line by default it also has

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a call to the timestamps method
which will set up created_at and

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updated_at columns that track when
a record was created or modified.

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It's not mentioned here but

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rails will automatically create
the all important ID column.

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That's used for
looking individual page records up later.

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We've created the migration, but
the database isn't updated yet.

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Remember we got a pending migration error
last time we created the migration without

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updating the database to avoid seeing
that next time we launch the server.

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We need to run bin/rails db:migrate,

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which will run the migration and
create the database table.

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Now let's run the server
again with bin/rails s.

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And then reload our browser.

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It will load successfully this time but

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no pages will be displayed.
We'll fix that next.