Blog: Seeding

Mix.install([
  {:jason, "~> 1.4"},
  {:kino, "~> 0.8.0", override: true},
  {:youtube, github: "brooklinjazz/youtube"},
  {:hidden_cell, github: "brooklinjazz/hidden_cell"}
])

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Blog: Seeding

You’re going to create a seed file for your existing Blog project. This seed file will make it easier to manually test your blog application.

Blog: Seeding

Use the priv/repo/seeds.exs file to seed your database with:

1. A blog post without any comments.
2. A blog post with an associated comment.

Once complete, use your seed file to seed the database.

$ mix ecto.reset

Then display comments on your Post show page.

Bonus: Faker

Add Faker as a dependency in your project.

Then use Faker to create a post with a large amount of text and a comment with a large amount of text.

Bonus: Create 100 Posts

Create a new seed file that will generate 100 posts.

Bonus: Create A Post With 100 Comments

Create a new seed file that will generate a post with 100 comments.

Mark As Completed

file_name = Path.basename(Regex.replace(~r/#.+/, __ENV__.file, ""), ".livemd")

save_name =
  case Path.basename(__DIR__) do
    "reading" -> "blog_seeding_reading"
    "exercises" -> "blog_seeding_exercise"
  end

progress_path = __DIR__ <> "/../progress.json"
existing_progress = File.read!(progress_path) |> Jason.decode!()

default = Map.get(existing_progress, save_name, false)

form =
  Kino.Control.form(
    [
      completed: input = Kino.Input.checkbox("Mark As Completed", default: default)
    ],
    report_changes: true
  )

Task.async(fn ->
  for %{data: %{completed: completed}} <- Kino.Control.stream(form) do
    File.write!(
      progress_path,
      Jason.encode!(Map.put(existing_progress, save_name, completed), pretty: true)
    )
  end
end)

form

Commit Your Progress

Run the following in your command line from the curriculum folder to track and save your progress in a Git commit. Ensure that you do not already have undesired or unrelated changes by running git status or by checking the source control tab in Visual Studio Code.

$ git checkout -b blog-seeding-exercise
$ git add .
$ git commit -m "finish blog seeding exercise"
$ git push origin blog-seeding-exercise

Create a pull request from your blog-seeding-exercise branch to your solutions branch. Please do not create a pull request to the DockYard Academy repository as this will spam our PR tracker.

DockYard Academy Students Only:

Notify your teacher by including @BrooklinJazz in your PR description to get feedback. You (or your teacher) may merge your PR into your solutions branch after review.

If you are interested in joining the next academy cohort, sign up here to receive more news when it is available.

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