## Generate migrations
```
be rake generate:migration NAME=create_tasks
```

## Create Table
```
  create_table :tasks do |t|
    t.string  :description
    t.boolean :completed, default: false
    t.integer :list_id

    t.timestamps
```

## Generate models
```
be rake generate:model NAME=Task
```

## List has many
```
has_many :tasks
```

## Task belongs to
```
belongs_to :list
```

## Many to many Task has many tags
```
has_many :task_tags
has_many :tags, through: :task_tags
```

## TaskTag
```
belongs_to :task
belongs_to :tag
```

## Tag
```
has_many :task_tags
has_many :tasks, through: :task_tags
```