Refactored all the input helers to use the new Formtastic 2.0 custom inputs.

Author: ebeigarts

activeadmin.gemspec

@@ -20,7 +20,7 @@ Gem::Specification.new do |s|
   s.add_dependency("rails", ">= 3.0.0")
   s.add_dependency("meta_search", ">= 0.9.2")
   s.add_dependency("devise", ">= 1.1.2")
-  s.add_dependency("formtastic", "< 2.0.0")
+  s.add_dependency("formtastic", ">= 2.0.0")
   s.add_dependency("inherited_resources", "< 1.3.0")
   s.add_dependency("kaminari", ">= 0.12.4")
   s.add_dependency("sass", ">= 3.1.0")

lib/active_admin.rb

@@ -1,6 +1,7 @@
 require 'meta_search'
 require 'devise'
 require 'kaminari'
+require 'formtastic'
 require 'sass'
 require 'active_admin/arbre'
 require 'active_admin/engine'
@@ -22,6 +23,8 @@ module ActiveAdmin
   autoload :DSL,                      'active_admin/dsl'
   autoload :Event,                    'active_admin/event'
   autoload :FormBuilder,              'active_admin/form_builder'
+  autoload :FilterFormBuilder,        'active_admin/filter_form_builder'
+  autoload :Inputs,                   'active_admin/inputs'
   autoload :Iconic,                   'active_admin/iconic'
   autoload :Menu,                     'active_admin/menu'
   autoload :MenuItem,                 'active_admin/menu_item'

lib/active_admin/filter_form_builder.rb

@@ -0,0 +1,53 @@
+module ActiveAdmin
+  # This form builder defines methods to build filter forms such
+  # as the one found in the sidebar of the index page of a standard resource.
+  class FilterFormBuilder < FormBuilder
+
+    def filter(method, options = {})
+      return "" if method.nil? || method == ""
+      options[:as] ||= default_input_type(method)
+      return "" unless options[:as]
+      content = input(method, options)
+      form_buffers.last << content.html_safe if content
+    end
+
+    protected
+
+    # Returns the default filter type for a given attribute
+    def default_input_type(method, options = {})
+      if column = column_for(method)
+        case column.type
+        when :date, :datetime
+          return :date_range
+        when :string, :text
+          return :string
+        when :integer
+          return :select if reflection_for(method.to_s.gsub('_id','').to_sym)
+          return :numeric
+        when :float, :decimal
+          return :numeric
+        end
+      end
+
+      if reflection = reflection_for(method)
+        return :select if reflection.macro == :belongs_to && !reflection.options[:polymorphic]
+      end
+    end
+
+    def custom_input_class_name(as)
+      "ActiveAdmin::Inputs::Filter#{as.to_s.camelize}Input"
+    end
+
+    # Returns the column for an attribute on the object being searched
+    # if it exists. Otherwise returns nil
+    def column_for(method)
+      @object.base.columns_hash[method.to_s] if @object.base.respond_to?(:columns_hash)
+    end
+
+    # Returns the association reflection for the method if it exists
+    def reflection_for(method)
+      @object.base.reflect_on_association(method) if @object.base.respond_to?(:reflect_on_association)
+    end
+
+  end
+end

lib/active_admin/form_builder.rb

@@ -1,7 +1,5 @@
-require 'formtastic'
-
 module ActiveAdmin
-  class FormBuilder < ::Formtastic::SemanticFormBuilder
+  class FormBuilder < ::Formtastic::FormBuilder
 
     attr_reader :form_buffers
 
@@ -21,8 +19,6 @@ def inputs(*args, &block)
     # its contents, so we want to skip the internal buffering
     # while building up its contents
     def input(method, *args)
-      return if polymorphic_belongs_to_association?(method)
-      
       content = with_new_form_buffer { super }
       return content.html_safe unless @inputs_with_block
       form_buffers.last << content.html_safe
@@ -52,14 +48,6 @@ def commit_button_with_cancel_link
       content << cancel_link
     end
 
-    def datepicker_input(method, options)
-      options = options.dup
-      options[:input_html] ||= {}
-      options[:input_html][:class] = [options[:input_html][:class], "datepicker"].compact.join(' ')
-      options[:input_html][:size] ||= "10"
-      string_input(method, options)
-    end
-
     def has_many(association, options = {}, &block)
       options = { :for => association }.merge(options)
       options[:class] ||= ""
@@ -98,15 +86,14 @@ def has_many(association, options = {}, &block)
       form_buffers.last << content.html_safe
     end
 
-    private
+    protected
 
-    # Pass in a method to check if it's a polymorphic association
-    def polymorphic_belongs_to_association?(method)
-      reflection = reflection_for(method)
-      
-      reflection && reflection.macro == :belongs_to && reflection.options[:polymorphic]
+    def custom_input_class_name(as)
+      "ActiveAdmin::Inputs::#{as.to_s.camelize}Input"
     end
 
+    private
+
     def with_new_form_buffer
       form_buffers << "".html_safe
       return_value = yield

lib/active_admin/inputs.rb

@@ -0,0 +1,14 @@
+module ActiveAdmin
+  module Inputs
+    extend ActiveSupport::Autoload
+
+    autoload :DatepickerInput
+
+    autoload :FilterBase
+    autoload :FilterStringInput
+    autoload :FilterDateRangeInput
+    autoload :FilterNumericInput
+    autoload :FilterSelectInput
+    autoload :FilterCheckBoxesInput
+  end
+end

lib/active_admin/inputs/datepicker_input.rb

@@ -0,0 +1,11 @@
+module ActiveAdmin
+  module Inputs
+    class DatepickerInput < ::Formtastic::Inputs::StringInput
+      def input_html_options
+        options = super
+        options[:class] = [options[:class], "datepicker"].compact.join(' ')
+        options
+      end
+    end
+  end
+end

lib/active_admin/inputs/filter_base.rb

@@ -0,0 +1,46 @@
+module ActiveAdmin
+  module Inputs
+    module FilterBase
+      include ::Formtastic::Inputs::Base
+
+      def input_wrapping(&block)
+        template.content_tag(:div,
+          template.capture(&block),
+          wrapper_html_options
+        )
+      end
+
+      def required?
+        false
+      end
+
+      def wrapper_html_options
+        { :class => "filter_form_field #{as}" }
+      end
+
+      # Override the standard finder to accept a proc
+      def collection_from_options
+        if options[:collection].is_a?(Proc)
+          options[:collection].call
+        else
+          super
+        end
+      end
+
+      # Returns the default label for a given attribute
+      # Will use ActiveModel I18n if possible
+      def default_filter_label(method)
+        if @object.base.respond_to?(:human_attribute_name)
+          @object.base.human_attribute_name(method)
+        else
+          method.to_s.titlecase
+        end
+      end
+
+      # Returns the association reflection for the method if it exists
+      def reflection_for(method)
+        @object.base.reflect_on_association(method) if @object.base.respond_to?(:reflect_on_association)
+      end
+    end
+  end
+end

lib/active_admin/inputs/filter_check_boxes_input.rb

@@ -0,0 +1,11 @@
+module ActiveAdmin
+  module Inputs
+    class FilterCheckBoxesInput < ::Formtastic::Inputs::CheckBoxesInput
+      include FilterBase
+
+      def input_name
+        "#{object_name}[#{association_primary_key || method}_in][]"
+      end
+    end
+  end
+end

lib/active_admin/inputs/filter_date_range_input.rb

@@ -0,0 +1,34 @@
+module ActiveAdmin
+  module Inputs
+    class FilterDateRangeInput < ::Formtastic::Inputs::StringInput
+      include FilterBase
+
+      def to_html
+        input_wrapping do
+          [ label_html,
+            builder.text_field(gt_input_name, input_html_options(gt_input_name)),
+            template.content_tag(:span, "-", :class => "seperator"),
+            builder.text_field(lt_input_name, input_html_options(lt_input_name)),
+          ].join("\n").html_safe
+        end
+      end
+
+      def gt_input_name
+        "#{method}_gte"
+      end
+      alias :input_name :gt_input_name
+
+      def lt_input_name
+        "#{method}_lte"
+      end
+
+      def input_html_options(input_name = gt_input_name)
+        current_value = @object.send(input_name)
+        { :size => 12,
+          :class => "datepicker",
+          :max => 10,
+          :value => current_value.respond_to?(:strftime) ? current_value.strftime("%Y-%m-%d") : "" }
+      end
+    end
+  end
+end

lib/active_admin/inputs/filter_numeric_input.rb

@@ -0,0 +1,55 @@
+module ActiveAdmin
+  module Inputs
+    class FilterNumericInput < ::Formtastic::Inputs::NumberInput
+      include FilterBase
+
+      def to_html
+        input_wrapping do
+          [ label_html,
+            select_html,
+            " ",
+            input_html
+          ].join("\n").html_safe
+        end
+      end
+
+      def input_html
+        builder.text_field current_filter, input_html_options
+      end
+
+      def input_html_options
+        { :size => 10, :id => "#{method}_numeric" }
+      end
+
+      def select_html
+        template.select_tag '', select_options, select_html_options
+      end
+
+      def select_options
+        template.options_for_select(filters, current_filter)
+      end
+
+      def select_html_options
+        { :onchange => "document.getElementById('#{method}_numeric').name = 'q[' + this.value + ']';" }
+      end
+
+      # Returns the scope for which we are currently searching. If no search is available
+      # it returns the first scope
+      def current_filter
+        filters[1..-1].inject(filters.first){|a,b| @object.send(b[1].to_sym) ? b : a }[1]
+      end
+
+      def filters
+        (options[:filters] || default_filters).collect do |scope|
+          [scope[0], [method, scope[1]].join("_")]
+        end
+      end
+
+      def default_filters
+        [ [I18n.t('active_admin.equal_to'), 'eq'],
+          [I18n.t('active_admin.greater_than'), 'gt'],
+          [I18n.t('active_admin.less_than'), 'lt'] ]
+      end
+    end
+  end
+end