Add context to Page

app/controllers/administrate/application_controller.rb

@@ -11,6 +11,7 @@ def index
       resources = paginate_resources(resources)
       @resources = resources
       page = Administrate::Page::Collection.new(dashboard, order: order)
+      page.context = self
       filters = Administrate::Search.new(scoped_resource, dashboard, search_term).valid_filters
 
       render locals: {
@@ -24,29 +25,40 @@ def index
 
     def show
       @resource = resource = requested_resource
+      page = Administrate::Page::Show.new(dashboard, resource)
+      page.context = self
       render locals: {
-        page: Administrate::Page::Show.new(dashboard, resource)
+        page: page
       }
     end
 
     def new
-      @resource = resource = new_resource
-      authorize_resource(resource)
+      @resource = resource = new_resource.tap do |resource|
+        authorize_resource(resource)
+        contextualize_resource(resource)
+      end
+
+      page = Administrate::Page::Form.new(dashboard, resource)
+      page.context = self
       render locals: {
-        page: Administrate::Page::Form.new(dashboard, resource)
+        page: page
       }
     end
 
     def edit
       @resource = resource = requested_resource
+      page = Administrate::Page::Form.new(dashboard, resource)
+      page.context = self
       render locals: {
-        page: Administrate::Page::Form.new(dashboard, resource)
+        page: page
       }
     end
 
     def create
-      @resource = resource = new_resource(resource_params)
-      authorize_resource(resource)
+      @resource = resource = new_resource(resource_params).tap do |resource|
+        authorize_resource(resource)
+        contextualize_resource(resource)
+      end
 
       if resource.save
         yield(resource) if block_given?
@@ -55,8 +67,10 @@ def create
           notice: translate_with_resource("create.success")
         )
       else
+        page = Administrate::Page::Form.new(dashboard, resource)
+        page.context = self
         render :new, locals: {
-          page: Administrate::Page::Form.new(dashboard, resource)
+          page: page
         }, status: :unprocessable_entity
       end
     end
@@ -70,8 +84,10 @@ def update
           status: :see_other
         )
       else
+        page = Administrate::Page::Form.new(dashboard, resource)
+        page.context = self
         render :edit, locals: {
-          page: Administrate::Page::Form.new(dashboard, resource)
+          page: page
         }, status: :unprocessable_entity
       end
     end
@@ -178,12 +194,15 @@ def sorting_params
     end
 
     def dashboard
-      @dashboard ||= dashboard_class.new
+      @dashboard ||= dashboard_class.new.tap do |d|
+        d.context = self
+      end
     end
 
     def requested_resource
       @requested_resource ||= find_resource(params[:id]).tap do |resource|
         authorize_resource(resource)
+        contextualize_resource(resource)
       end
     end
 
@@ -277,6 +296,13 @@ def authorize_resource(resource)
       end
     end
 
+    # Override this if you want to contextualize the resource differently.
+    #
+    # @param resource A resource to be contextualized.
+    # @return nothing
+    def contextualize_resource(resource)
+    end
+
     def paginate_resources(resources)
       resources.page(params[:_page]).per(records_per_page)
     end

docs/customizing_controller_actions.md

@@ -23,16 +23,15 @@ class Admin::FoosController < Admin::ApplicationController
   #   send_foo_updated_email
   # end
 
-  # Override this method to specify custom lookup behavior.
   # This will be used to set the resource for the `show`, `edit`, and `update`
   # actions.
   #
   # def find_resource(param)
   #   Foo.find_by!(slug: param)
   # end
 
-  # Override this if you have certain roles that require a subset
-  # this will be used to set the records shown on the `index` action.
+  # Override this if you have certain roles that require a subset.
+  # This will be used in all actions except for the `new` and `create` actions
   #
   # def scoped_resource
   #  if current_user.super_admin?
@@ -41,6 +40,17 @@ class Admin::FoosController < Admin::ApplicationController
   #    resource_class.with_less_stuff
   #  end
   # end
+
+
+  # Override this if you want to contextualize the resource differently.
+  # This will be used to contextualize the resource for the all actions without `index`.
+  #
+  # def contextualize_resource(resource)
+  #   case action_name
+  #   when "new", "create"
+  #     resource.author = current_user
+  #   end
+  # end
 end
 ```
 

lib/administrate/base_dashboard.rb

@@ -70,7 +70,7 @@ def specific_form_attributes_for(action)
     end
 
     def permitted_attributes(action = nil)
-      attributes = form_attributes action
+      attributes = form_attributes(action)
 
       if attributes.is_a? Hash
         attributes = attributes.values.flatten
@@ -120,6 +120,8 @@ def item_associations
       attribute_associated attributes
     end
 
+    attr_accessor :context
+
     private
 
     def attribute_not_found_message(attr)

lib/administrate/field/associative.rb

@@ -53,7 +53,9 @@ def html_controller
       private
 
       def associated_dashboard
-        "#{associated_class_name}Dashboard".constantize.new
+        "#{associated_class_name}Dashboard".constantize.new.tap do |d|
+          d.context = context
+        end
       end
 
       def association_primary_key

lib/administrate/field/base.rb

@@ -65,18 +65,22 @@ def self.local_partial_prefixes(look: :default)
         end
       end
 
-      def initialize(attribute, data, page, options = {})
+      def initialize(attribute, raw_data, page, options = {})
         @attribute = attribute
         @page = page
         @resource = options.delete(:resource)
         @options = options
-        @data = read_value(data)
+        @raw_data = raw_data
       end
 
       def html_class
         self.class.html_class
       end
 
+      def data
+        read_value(@raw_data)
+      end
+
       def html_controller
         nil
       end
@@ -133,7 +137,8 @@ def required?
         end
       end
 
-      attr_reader :attribute, :data, :options, :page, :resource
+      attr_reader :attribute, :options, :page, :resource
+      attr_accessor :context
     end
   end
 end

lib/administrate/field/has_many.rb

@@ -26,7 +26,9 @@ def associated_collection(order = self.order)
           associated_dashboard,
           order: order,
           collection_attributes: options[:collection_attributes]
-        )
+        ).tap do |page|
+          page.context = context
+        end
       end
 
       def attribute_key
@@ -76,7 +78,7 @@ def more_than_limit?
       end
 
       def data
-        @data ||= associated_class.none
+        super || associated_class.none
       end
 
       def order_from_params(params)
@@ -106,12 +108,11 @@ def includes
       end
 
       def candidate_resources
-        if options.key?(:includes)
-          includes = options.fetch(:includes)
-          associated_class.includes(*includes).all
-        else
-          associated_class.all
-        end
+        scope = options[:scope] ? options[:scope].call(self) : associated_class.all
+        scope = scope.includes(*options.fetch(:includes)) if options.key?(:includes)
+
+        order = options.delete(:order)
+        order ? scope.reorder(order) : scope
       end
 
       def display_candidate_resource(resource)

lib/administrate/field/has_one.rb

@@ -26,14 +26,18 @@ def nested_form
         @nested_form ||= Administrate::Page::Form.new(
           resolver.dashboard_class.new,
           data || resolver.resource_class.new
-        )
+        ).tap do |page|
+          page.context = context
+        end
       end
 
       def nested_show
         @nested_show ||= Administrate::Page::Show.new(
           resolver.dashboard_class.new,
           data || resolver.resource_class.new
-        )
+        ) do |page|
+          page.context = context
+        end
       end
 
       def linkable?

lib/administrate/field/polymorphic.rb

@@ -26,12 +26,14 @@ def selected_global_id
       private
 
       def associated_dashboard(klass = data.class)
-        "#{klass.name}Dashboard".constantize.new
+        "#{klass.name}Dashboard".constantize.new.tap do |d|
+          d.context = context
+        end
       end
 
       def classes
         klasses = options.fetch(:classes, [])
-        klasses.respond_to?(:call) ? klasses.call : klasses
+        klasses.respond_to?(:call) ? klasses.call(self) : klasses
       end
 
       private

lib/administrate/page/base.rb

@@ -27,11 +27,19 @@ def item_associations
         dashboard.try(:item_associations) || []
       end
 
+      attr_accessor :context
+
       private
 
       def attribute_field(dashboard, resource, attribute_name, page)
         field = dashboard.attribute_type_for(attribute_name)
-        field.new(attribute_name, nil, page, resource: resource)
+        field.new(attribute_name, nil, page, resource: resource).tap do |f|
+          f.context = context
+        end
+      end
+
+      def get_attribute_value(resource, attribute_name)
+        resource.public_send(attribute_name)
       end
 
       attr_reader :dashboard, :options