Changing how inputs with Array attributes are generated.

spec/lucky_avram/input_helpers_spec.cr

@@ -0,0 +1,31 @@
+require "../spec_helper"
+include ContextHelper
+
+private class TestPage
+  include Lucky::HTMLPage
+
+  def render
+  end
+end
+
+describe Lucky::InputHelpers do
+  it "generates the proper name for array attributes" do
+    view { |page|
+      page.text_input(array_attribute)
+      page.text_input(array_attribute)
+      page.text_input(array_attribute)
+    }.should contain <<-HTML
+    <input type="text" id="key_group_0" name="key:group[]" value="one"><input type="text" id="key_group_1" name="key:group[]" value="two"><input type="text" id="key_group_2" name="key:group[]" value="">
+    HTML
+  end
+end
+
+private def array_attribute
+  Avram::PermittedAttribute.new(name: :group, param: nil, value: ["one", "two"], param_key: "key")
+end
+
+private def view
+  TestPage.new(build_context).tap do |page|
+    yield page
+  end.view.to_s
+end

src/lucky_avram/ext/lucky/input_helpers.cr

@@ -208,16 +208,45 @@ module Lucky::InputHelpers
       "type"  => type,
       "id"    => input_id(field),
       "name"  => input_name(field),
-      "value" => field.param.to_s,
+      "value" => input_value(field),
     }.merge(input_overrides)
+    update_array_id_counter!(field)
     input attrs, merge_options(html_options, input_options)
   end
 
+  private property array_id_counter : Hash(Symbol, Int32) do
+    Hash(Symbol, Int32).new { |h, k| h[k] = 0 }
+  end
+
+  private def update_array_id_counter!(field) : Nil
+    nil
+  end
+
+  private def update_array_id_counter!(field : Avram::PermittedAttribute(Array)) : Nil
+    array_id_counter[field.name] += 1
+  end
+
+  private def input_value(field) : String
+    field.param.to_s
+  end
+
+  private def input_value(field : Avram::PermittedAttribute(Array)) : String
+    field.value.try(&.[array_id_counter[field.name]]?).to_s
+  end
+
   private def input_name(field)
     "#{field.param_key}:#{field.name}"
   end
 
+  private def input_name(field : Avram::PermittedAttribute(Array))
+    "#{field.param_key}:#{field.name}[]"
+  end
+
   private def input_id(field)
     "#{field.param_key}_#{field.name}"
   end
+
+  private def input_id(field : Avram::PermittedAttribute(Array))
+    "#{field.param_key}_#{field.name}_#{array_id_counter[field.name]}"
+  end
 end

src/lucky_avram/ext/lucky/select_helpers.cr

@@ -25,4 +25,8 @@ module Lucky::SelectHelpers
   private def input_name(field)
     "#{field.param_key}:#{field.name}"
   end
+
+  private def input_name(field : Avram::PermittedAttribute(Array))
+    "#{field.param_key}:#{field.name}[]"
+  end
 end