form-select

FormSelect

中文介绍与说明

A simple improve for Rails form select helper.

We need use form.select ::category_id, Category.collect { |record| [record.name, record.id] } in so many case.

This gem give use a simple way.

Usage

gem "form-select"

app/model/category.rb

class Category
  form_select :name, scope: -> { order("name asc") }
  form_select :reverse_name, field: [:name, :id], scope: -> { order("name desc") }
end

class User
  form_select :login, field: [:login, :to_param], scope: -> { order("id desc") }
  form_select :email
  form_select :email_value, field: :email
  form_select :city, field: :city, scope: -> { where("city is not null").select(:city).distinct }

  def to_param
    login.downcase
  end
end

class Post
  form_select :author, field: [:author], scope: -> { where("author is not null").select(:author).distinct }
end

Now you got the helper methods:

irb> Category.name_options
 => [["Android", 3], ["iOS", 2], ["News", 1]]
irb> Category.reverse_name_options
 => [["News", 1], ["iOS", 2], ["Android", 3]]
irb> User.login_options
 => [["Foo", "foo"], ["Mike", "mike"], ["Jason", "jason"]]
irb> User.email_options
 => [["[e-mail]", 10], ["[e-mail]", 11], ["[e-mail]", 12]]
irb> User.email_value_options
 => [["[e-mail]", "[e-mail]"], ["[e-mail]", "[e-mail]"], ["[e-mail]", "[e-mail]"]]
irb> User.city_options
 => [["NewYork", "NewYork"], ["San Francisco", "San Francisco"], ["Chicago", "Chicago"]]
irb> Post.author_options
 => [["Jason", "Jason"], ["Mike", "Mike"], ["Foor", "Foo"]]

So you can easy use it in Rails form:

<%= form_with(model: post, local: true) do |form| %>
  <div class="field">
    <%= form.label :title %>
    <%= form.text_field :title %>
  </div>

  <div class="field">
    <%= form.label :user_id %>
    <%= form.select :user_id, User.email_options %>
  </div>

  <div class="field">
    <%= form.label :city %>
    <%= form.select :city, User.city_options %>
  </div>

  <div class="field">
    <%= form.label :category_id %>
    <%= form.select :category_id, Category.name_options %>
  </div>

  <div class="actions">
    <%= form.submit %>
  </div>
<% end %>

License

The gem is available as open source under the terms of the MIT License.