Add support for non-object based forms

Author: koppen

CHANGELOG.md

@@ -10,6 +10,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 * Flowbite::Link component to render links.
 * Flowbite::Card now displays a title via the title argument/slot.
 * Improved error message when an unknown style is requested.
+* Input-elements now support forms without an object; ie forms built with `form_tag` - not `form_for` or `form_with`.
 
 ### Changed
 

app/components/flowbite/input/field.rb

@@ -95,7 +95,13 @@ def disabled?
         !!@disabled
       end
 
+      # Returns true if the object has errors. Returns false if there is no
+      # object.
+      #
+      # @return [Boolean] true if there are errors, false otherwise.
       def errors?
+        return false unless @object
+
         @object.errors.include?(@attribute.intern)
       end
 

app/components/flowbite/input/label.rb

@@ -38,6 +38,8 @@ def call
       end
 
       def errors?
+        return false unless @object
+
         @object.errors.include?(@attribute.intern)
       end
 

app/components/flowbite/input_field.rb

@@ -67,7 +67,11 @@ class InputField < ViewComponent::Base
     renders_one :label
 
     # Returns the errors for attribute
+    #
+    # @return [Array<String>] An array of error messages for the attribute.
     def errors
+      return [] unless @object
+
       @object.errors[@attribute] || []
     end
 

test/components/flowbite/input_field_test.rb

@@ -156,3 +156,157 @@ def test_adds_classes_to_the_root_element
     assert_selector("div.custom_class.another")
   end
 end
+
+class Flowbite::InputFieldWithoutObjectTest < Minitest::Test
+  include ViewComponent::TestHelpers
+
+  def setup
+    @view_context = ActionController::Base.new.view_context
+    @form = ActionView::Helpers::FormBuilder.new(nil, nil, @view_context, {})
+  end
+
+  def test_renders_a_hint
+    render_inline(Flowbite::InputField.new(form: @form, attribute: :title, hint: {content: "What's the title?"}))
+
+    assert_selector("input[type='text']")
+    assert_selector("p", text: "What's the title?")
+  end
+
+  def test_adds_aria_attributes_for_hint
+    render_inline(Flowbite::InputField.new(form: @form, attribute: :title, hint: {content: "What's the title?"}))
+
+    assert_selector("input[aria-describedby='_title_hint']")
+    assert_selector("p#_title_hint", text: "What's the title?")
+  end
+
+  def test_adds_extra_attributes_to_hint
+    render_inline(Flowbite::InputField.new(form: @form, attribute: :title, hint: {content: "What's the title?", options: {class: "custom-hint-class"}}))
+
+    assert_selector("p#_title_hint.custom-hint-class", text: "What's the title?")
+  end
+
+  def test_renders_an_input_element
+    render_inline(Flowbite::InputField.new(form: @form, attribute: :title))
+
+    assert_component_rendered
+    assert_selector("input[type='text']")
+  end
+
+  def test_renders_a_label
+    render_inline(Flowbite::InputField.new(form: @form, attribute: :title))
+
+    assert_component_rendered
+    assert_selector("label[for='title']")
+  end
+
+  def test_renders_a_label_with_specified_content
+    render_inline(
+      Flowbite::InputField.new(form: @form, attribute: :title, label: {content: "Custom label"})
+    )
+
+    assert_selector("label[for='title']", text: "Custom label")
+  end
+
+  def test_renders_a_label_with_specified_attributes
+    render_inline(
+      Flowbite::InputField.new(form: @form, attribute: :title, label: {options: {class: "custom-label"}})
+    )
+
+    assert_selector("label[for='title'].custom-label")
+  end
+
+  def test_replaces_the_label_component_using_with_label_content
+    render_inline(Flowbite::InputField.new(form: @form, attribute: :title)) do |field|
+      field
+        .with_label_content("<label id=\"my-label\">Custom label</label>".html_safe)
+    end
+
+    assert_no_selector("label[for='title'].custom-class")
+    assert_selector("label#my-label", text: "Custom label")
+  end
+
+  def test_replaces_the_label_component_using_with_label_and_with_content
+    render_inline(Flowbite::InputField.new(form: @form, attribute: :title)) do |field|
+      field
+        .with_label.with_content("Custom label")
+    end
+
+    assert_no_selector("label[for='title'].custom-class")
+    assert_text("Custom label")
+  end
+
+  def test_replaces_the_label_component_using_with_label
+    render_inline(Flowbite::InputField.new(form: @form, attribute: :title)) do |field|
+      field
+        .with_label { "Block with a full component" }
+    end
+
+    assert_no_selector("label[for='title']")
+    assert_text("Block with a full component")
+  end
+
+  def test_passes_input_options_to_input_element
+    render_inline(Flowbite::InputField.new(form: @form, attribute: :title, input: {options: {placeholder: "Enter title"}}))
+
+    assert_component_rendered
+    assert_selector("input[type='text'][placeholder='Enter title']")
+  end
+
+  def test_renders_a_large_select_element
+    render_inline(Flowbite::InputField::Select.new(form: @form, attribute: :state, collection: ["read", "unread"], size: :lg))
+
+    assert_selector("select.text-base.px-3\\.5.py-3")
+  end
+
+  def test_passes_input_options_to_select_element
+    render_inline(Flowbite::InputField::Select.new(form: @form, attribute: :state, collection: ["read", "unread"], input: {options: {"data-key": "state-select"}}))
+
+    assert_selector("select[data-key='state-select']")
+  end
+
+  def test_renders_disabled_input_field
+    render_inline(Flowbite::InputField.new(form: @form, attribute: :title, disabled: true))
+
+    assert_selector("input[disabled]")
+  end
+
+  def test_renders_enabled_input_field_by_default
+    render_inline(Flowbite::InputField.new(form: @form, attribute: :title))
+
+    assert_no_selector("input[disabled]")
+  end
+
+  def test_renders_disabled_select
+    render_inline(Flowbite::InputField::Select.new(form: @form, attribute: :state, collection: ["read", "unread"], disabled: true))
+
+    assert_selector("select[disabled]")
+  end
+
+  def test_renders_select_with_default_label
+    render_inline(Flowbite::InputField::Select.new(form: @form, attribute: :state, collection: ["read", "unread"]))
+
+    assert_selector("label[for='state']")
+  end
+
+  def test_renders_select_with_custom_label_content
+    render_inline(
+      Flowbite::InputField::Select.new(form: @form, attribute: :state, collection: ["read", "unread"], label: {content: "Book Status"})
+    )
+
+    assert_selector("label[for='state']", text: "Book Status")
+  end
+
+  def test_renders_select_with_custom_label_attributes
+    render_inline(
+      Flowbite::InputField::Select.new(form: @form, attribute: :state, collection: ["read", "unread"], label: {options: {class: "select-label"}})
+    )
+
+    assert_selector("label[for='state'].select-label")
+  end
+
+  def test_adds_classes_to_the_root_element
+    render_inline(Flowbite::InputField.new(class: "custom_class another", form: @form, attribute: :title))
+
+    assert_selector("div.custom_class.another")
+  end
+end