# Blocks & Fields

## Database
blocks
```
id = 1	resource_type="Page" resource_id="1" name = 'people', position = 1
```

fields
```
id = 1  block_id="1" name = 'people_title' 			type = 'string'                                 value = 'test'
id = 2  block_id="1" name = 'people_people' 			type = 'list'				
id = 3  block_id="1" name = 'people_people_1_person' 		type = 'group'		parent_id = 2
id = 4  block_id="1" name = 'people_people_1_person_name' 	type = 'string'		parent_id = 3		value = 'Jef'
id = 5  block_id="1" name = 'people_people_2_person' 		type = 'group'		parent_id = 2
id = 6  block_id="1" name = 'people_people_2_person_name' 	type = 'string'		parent_id = 6		value = 'Gert-Jan'
```

## Models


```rb
# models/page.rb

class Page < ActiveRecord::Model
  has_many :blocks, as: :blockable
end
```

```rb
# models/block.rb

class Block < ActiveRecord::Model
  belongs_to :blockable, polymorphic: true
  has_many :fields
    
  # db to hash
  def fields_hash
    {
      title: 'test',
      people: [
        {name: 'Jef'},
        {name: 'Gert-Jan'}
      ]
    }
  end
end
```

```rb
# models/block/fields.rb

class Block::Field < ActiveRecord::Model
  self.table_name = 'block_fields'

  belongs_to :block
end
```

## Controllers
```ruby
# website/pages_controller.rb

class PagesController < ApplicationController
  def show
    @page = Page.friendly.find(params[:slug])
  end
end
```

## Views
```erb
# admin/pages/_form.html.erb

<input type="text" name="title" value="test">

<%= render 'blocks/people', required: true, moveable: false %>
<%= render 'blocks/menu', required: true, moveable: false %>
<%= render 'blocks/contact_form', required: true, moveable: false %>
<%= render 'blocks/map', required: true, moveable: false %>

<%= render 'blocks/heading', required: false, moveable: true %>
<%= render 'blocks/text', required: false, moveable: true %>
<%= render 'blocks/image', required: false, moveable: true %>
<%= render 'blocks/video', required: false, moveable: true %>
```

```erb
# admin/blocks/_people.html.erb

<input type="text" name="people_title" value="title" value="test">
<div class="repeater" data-min="2" data-max="3">
  <div class="group">
    <input type="text" name="people_people_1_person_name" value="name" value="Jef">
    <input type="text" name="people_people_2_person_name" value="name" value="Gert-Jan">
  </div>
</div>
```

```erb
# website/pages/show.html.erb

<% @page.blocks.each do |block| %>
  <%= render "block_#{block.name}", block: block %>
<% end %>
```

```erb
# website/blocks/_people.html.erb

<% fields = block.fields_hash %>
<%= fields[:title] %>
<% fields[:people].each do |person| %>
  <%= person[:name] %>
<% end %>
```