https://github.com/andrewjh271/micro_reddit

https://github.com/andrewjh271/micro_reddit

Last synced: about 1 month ago
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• Host: GitHub
• URL: https://github.com/andrewjh271/micro_reddit
• Owner: andrewjh271
• Created: 2020-10-03T06:06:39.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2020-10-04T06:04:40.000Z (over 4 years ago)
• Last Synced: 2024-12-09T09:54:21.931Z (about 1 month ago)
• Language: Ruby
• Size: 150 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Micro Reddit

A small exercise dealing with model generations and associations. Created as part of the Odin Project curriculum.

### Thoughts

During this project I experimented with adding generator parameters.

`rails g model post title:string:uniq author:belongs_to` created the following: (`belongs_to` is an alias for `references` and `uniq` creates a unique index). 

```ruby

class CreatePosts < ActiveRecord::Migration[6.0]

  def change

    create_table :posts do |t|

      t.string :title

      t.text :body

      t.belongs_to :author, null: false, foreign_key: { to_table: :users }

      t.timestamps

    end

    add_index :posts, :title, unique: true

  end

end

```

Since I decided to name the `belongs_to` association `author` even though the referenced model is `User`, I needed to add the clarifying table name, since Rails is unable to infer it. That is the one change I made before migrating.

For the `Comment` model I entered `rails g model comment body:text author:references post:references`, using `references` instead of `belongs_to`. That created:

```ruby

class CreateComments < ActiveRecord::Migration[6.0]

  def change

    create_table :comments do |t|

      t.text :body

      t.references :author, null: false, foreign_key: { to_table: :users }

      t.references :post, null: false, foreign_key: true

      t.timestamps

    end

  end

end

```

again, the only change was for the author column — `foreign_key: true` to `foreign_key: { to_table: :users }`.