FilterFactory

FilterFactory allows you to easily fetch ActiveRecord/Mongoid models that match specified filters.

Installation

Add this line to your application's Gemfile:

gem 'filter_factory'

And then execute:

$ bundle

Or install it yourself as:

$ gem install filter_factory

Usage

Describe your filter:

@filter = FilterFactory.create do
  # filter field definition: field name for ActiveRecord/Mongoid model, filter type
  field :title, :regex
  field :author, :eq
  field :views, :gte

  # add aliases for the same field with different conditions
  field :created_at, :gte, alias: :created_at_gte
  field :created_at, :lte, alias: :created_at_lte

  # ...
end

Alternate way to create your filter:

@filter = FilterFactory.create do
    # type filter type as method and field name as an argument
    eq :author
    gte :views

    # supply options after field name
    gte :created_at, alias: :created_at_gte
    lte :created_at, alias: :created_at_lte
end

Render form as you want in your view (use aliases instead of field names if specified):

<%= form_for @filter, as: :filter do |f| %>
<div>
    <%= f.label :title %>
    <br/>
    <%= f.text_field %>
</div>
<div>
    <%= f.label :author %>
    <br/>
    <%= f.select Author.all.map{|r| [r.name, r.id]} %>
</div>
<div>
    <%= f.label :views %>
    <br/>
    <%= f.number_field :views %>
</div>
<div>
    <%= f.label :created_at_gte %>
    <br/>
    <%= f.date_select :created_at_gte %>
</div>
<div>
    <%= f.label :created_at_lte %>
    <br/>
    <%= f.date_select :created_at_lte %>
</div>
<div class="actions">
    <%= f.submit "Filter" %>
</div>
<% end %>

Filter your models in controller:

@filter.attributes(params[:filter]) # update filter with values supplied from the form

@posts = Post.filter(@filter) # fetch records that match specified filters

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request