feature: add meta to field (#2874)

lib/avo/fields/base_field.rb

@@ -86,6 +86,7 @@ def initialize(id, **args, &block)
         @action = args[:action]
         @components = args[:components] || {}
         @for_attribute = args[:for_attribute]
+        @meta = args[:meta]
 
         @args = args
 
@@ -281,6 +282,10 @@ def form_field_label
         id
       end
 
+      def meta
+        Avo::ExecutionContext.new(target: @meta, record: record, resource: @resource, view: @view).handle
+      end
+
       private
 
       def model_or_class(model)

spec/dummy/app/avo/resources/event.rb

@@ -5,9 +5,17 @@ class Avo::Resources::Event < Avo::BaseResource
 
   def fields
     field :name, as: :text, link_to_record: true, sortable: true, stacked: true
-    field :first_user, as: :record_link
+    field :first_user,
+      as: :record_link,
+      meta: -> {
+        :foo
+      }
     field :event_time, as: :datetime, sortable: true
-    field :body, as: :trix
+    field :body,
+      as: :trix,
+      meta: {
+        foo: :bar,
+      }
 
     if params[:show_location_field] == "1"
       # Example for error message when resource is missing

spec/features/avo/fields_meta_spec.rb

@@ -0,0 +1,15 @@
+require 'rails_helper'
+
+RSpec.describe Avo::EventsController, type: :controller do
+  it "finds the meta value as a hash" do
+    get :index
+
+    expect(assigns(:resource).get_field(:body).meta).to eq({foo: :bar})
+  end
+
+  it "finds the meta value as a block" do
+    get :index
+
+    expect(assigns(:resource).get_field(:first_user).meta).to eq(:foo)
+  end
+end