fix(champ): allow to submit when secondary options are empty

app/javascript/controllers/autosave_controller.ts

@@ -6,8 +6,11 @@ import {
   isTextInputElement,
   show,
   hide,
+  enable,
+  disable,
   getConfig
 } from '@utils';
+import { z } from 'zod';
 
 import { ApplicationController } from './application_controller';
 import { AutoUpload } from '../shared/activestorage/auto-upload';
@@ -85,6 +88,7 @@ export class AutosaveController extends ApplicationController {
         isCheckboxOrRadioInputElement(target)
       ) {
         this.toggleOtherInput(target);
+        this.toggleLinkedSelect(target);
         this.enqueueAutosaveRequest();
       }
     }
@@ -219,4 +223,60 @@ export class AutosaveController extends ApplicationController {
       }
     }
   }
+
+  private toggleLinkedSelect(target: HTMLSelectElement | HTMLInputElement) {
+    const secondaryOptions = target.dataset.secondaryOptions;
+    if (isSelectElement(target) && secondaryOptions) {
+      const parent = target.closest('.editable-champ-linked_drop_down_list');
+      const secondary = parent?.querySelector<HTMLSelectElement>(
+        'select[data-secondary]'
+      );
+      if (secondary) {
+        const options = parseOptions(secondaryOptions);
+        this.setSecondaryOptions(secondary, options[target.value]);
+      }
+    }
+  }
+
+  private setSecondaryOptions(
+    secondarySelectElement: HTMLSelectElement,
+    options: string[]
+  ) {
+    const wrapper = secondarySelectElement.closest('.secondary');
+    const hidden = wrapper?.nextElementSibling as HTMLInputElement | null;
+
+    secondarySelectElement.innerHTML = '';
+
+    if (options.length) {
+      disable(hidden);
+
+      if (secondarySelectElement.required) {
+        secondarySelectElement.appendChild(makeOption(''));
+      }
+      for (const option of options) {
+        secondarySelectElement.appendChild(makeOption(option));
+      }
+
+      secondarySelectElement.selectedIndex = 0;
+      enable(secondarySelectElement);
+      show(wrapper);
+    } else {
+      hide(wrapper);
+      disable(secondarySelectElement);
+      enable(hidden);
+    }
+  }
+}
+
+const SecondaryOptions = z.record(z.string().array());
+
+function parseOptions(options: string) {
+  return SecondaryOptions.parse(JSON.parse(options));
+}
+
+function makeOption(option: string) {
+  const element = document.createElement('option');
+  element.textContent = option;
+  element.value = option;
+  return element;
 }

app/javascript/entrypoints/application.js

@@ -18,8 +18,6 @@ import '../new_design/procedure-form';
 import '../new_design/spinner';
 import '../new_design/support';
 
-import '../new_design/champs/linked-drop-down-list';
-
 import {
   toggleCondidentielExplanation,
   replaceSemicolonByComma

app/javascript/new_design/champs/linked-drop-down-list.js

@@ -1,32 +0,0 @@
-import { delegate } from '@utils';
-
-const PRIMARY_SELECTOR = 'select[data-secondary-options]';
-const SECONDARY_SELECTOR = 'select[data-secondary]';
-const CHAMP_SELECTOR = '.editable-champ';
-
-delegate('change', PRIMARY_SELECTOR, (evt) => {
-  const primary = evt.target;
-  const secondary = primary
-    .closest(CHAMP_SELECTOR)
-    .querySelector(SECONDARY_SELECTOR);
-  const options = JSON.parse(primary.dataset.secondaryOptions);
-
-  selectOptions(secondary, options[primary.value]);
-});
-function makeOption(option) {
-  let element = document.createElement('option');
-  element.textContent = option;
-  element.value = option;
-  return element;
-}
-function selectOptions(selectElement, options) {
-  selectElement.innerHTML = '';
-  if (selectElement.required) {
-    selectElement.appendChild(makeOption(''));
-  }
-  for (let option of options) {
-    selectElement.appendChild(makeOption(option));
-  }
-
-  selectElement.selectedIndex = 0;
-}

app/javascript/shared/utils.ts

@@ -70,15 +70,15 @@ export function getConfig() {
   return Gon.parse(window.gon);
 }
 
-export function show(el: HTMLElement | null) {
+export function show(el: Element | null) {
   el?.classList.remove('hidden');
 }
 
-export function hide(el: HTMLElement | null) {
+export function hide(el: Element | null) {
   el?.classList.add('hidden');
 }
 
-export function toggle(el: HTMLElement | null, force?: boolean) {
+export function toggle(el: Element | null, force?: boolean) {
   if (force == undefined) {
     el?.classList.toggle('hidden');
   } else if (force) {
@@ -88,11 +88,15 @@ export function toggle(el: HTMLElement | null, force?: boolean) {
   }
 }
 
-export function enable(el: HTMLInputElement | HTMLButtonElement | null) {
+export function enable(
+  el: HTMLSelectElement | HTMLInputElement | HTMLButtonElement | null
+) {
   el && (el.disabled = false);
 }
 
-export function disable(el: HTMLInputElement | HTMLButtonElement | null) {
+export function disable(
+  el: HTMLSelectElement | HTMLInputElement | HTMLButtonElement | null
+) {
   el && (el.disabled = true);
 }
 

app/models/champs/linked_drop_down_list_champ.rb

@@ -83,13 +83,13 @@ class Champs::LinkedDropDownListChamp < Champ
     [primary_value, secondary_value]
   end
 
+  def has_secondary_options_for_primary?
+    primary_value.present? && secondary_options[primary_value]&.any?(&:present?)
+  end
+
   private
 
   def pack_value(primary, secondary)
     self.value = JSON.generate([primary, secondary])
   end
-
-  def has_secondary_options_for_primary?
-    primary_value.present? && secondary_options[primary_value]&.any?(&:present?)
-  end
 end

app/views/shared/dossiers/editable_champs/_linked_drop_down_list.html.haml

@@ -4,6 +4,7 @@
     {},
     { data: { secondary_options: champ.secondary_options }, required: champ.mandatory?, id: champ.input_id, aria: { describedby: champ.describedby_id } }
 
+  .secondary{ class: champ.has_secondary_options_for_primary? ? '' : 'hidden' }
     = form.label :secondary_value, for: "#{champ.input_id}-secondary" do
       = champ.drop_down_secondary_libelle.presence || "Valeur secondaire dépendant de la première"
       - if champ.mandatory?
@@ -13,4 +14,5 @@
     = form.select :secondary_value,
       champ.secondary_options[champ.primary_value],
       {},
-    { data: { secondary: true }, required: champ.mandatory?, id: "#{champ.input_id}-secondary", aria: { describedby: "#{champ.describedby_id}-secondary" } }
+      { data: { secondary: true }, disabled: !champ.has_secondary_options_for_primary?, required: champ.mandatory?, id: "#{champ.input_id}-secondary", aria: { describedby: "#{champ.describedby_id}-secondary" } }
+  = form.hidden_field :secondary_value, value: '', disabled: champ.has_secondary_options_for_primary?