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ジャンルのカテゴリ―名

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<p data-bm="12" style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin: 4px; padding: revert; -webkit-line-clamp: revert; color: rgba(0, 0, 0, 0.8); font-family: roboto, helvetica, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;" data-pasted="true">なるほど、やりたいことはこうですね。<ul data-bm="13" style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin: revert; padding: revert; color: rgba(0, 0, 0, 0.8); font-family: roboto, helvetica, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><li style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin-top: revert; margin-right: revert; margin-bottom: 8px; margin-left: revert; padding: revert;">ASP.NET Core MVC の CreateView に<ul style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin: revert; padding: revert;"><li style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin-top: revert; margin-right: revert; margin-bottom: 8px; margin-left: revert; padding: revert;">親&nbsp;<code style="border-radius: 8px; background: none 0% 0% / auto repeat scroll padding-box border-box rgb(255, 255, 255);">&lt;select&gt;</code>（<code style="border-radius: 8px; background: none 0% 0% / auto repeat scroll padding-box border-box rgb(255, 255, 255);">PaymentTypeId</code>）</li><li style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin-top: revert; margin-right: revert; margin-bottom: 8px; margin-left: revert; padding: revert;">子&nbsp;<code style="border-radius: 8px; background: none 0% 0% / auto repeat scroll padding-box border-box rgb(255, 255, 255);">&lt;select&gt;</code>（<code style="border-radius: 8px; background: none 0% 0% / auto repeat scroll padding-box border-box rgb(255, 255, 255);">PaymentMethodId</code>）</li></ul></li><li style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin-top: revert; margin-right: revert; margin-bottom: 8px; margin-left: revert; padding: revert;">親に新しい項目を追加できる（SweetAlert2 で入力 &rarr; DB 保存 &rarr; 即反映）</li><li style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin-top: revert; margin-right: revert; margin-bottom: 8px; margin-left: revert; padding: revert;">子も同様に新しい項目を追加できる（SweetAlert2 で入力 &rarr; DB 保存 &rarr; 即反映）</li><li style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin-top: revert; margin-right: revert; margin-bottom: 8px; margin-left: revert; padding: revert;">親子は&nbsp;協調表示（親選択で子が絞り込み）</li></ul><p data-bm="14" style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin: 4px; padding: revert; -webkit-line-clamp: revert; color: rgba(0, 0, 0, 0.8); font-family: roboto, helvetica, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">以下に&nbsp;完全動作するサンプル構成 を示します。 （Entity Framework Core を使用、SweetAlert2 は CDN で読み込み）<h2 data-bm="15" style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin: revert; padding: revert; font: 22px / 24px roboto, helvetica, sans-serif; height: 32px; -webkit-line-clamp: 1; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-box-orient: vertical; color: rgba(0, 0, 0, 0.8); letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">1. モデル定義</h2><pre data-priority="2" data-bm="16" style="background: none 0% 0% / auto repeat scroll padding-box border-box rgb(245, 245, 245); border: 1px solid rgba(0, 0, 0, 0.1); border-radius: 8px; overflow: hidden; color: rgba(0, 0, 0, 0.8); font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><div data-bm="23" style="display: flex; height: 28px; flex-direction: row; justify-content: space-between; align-items: center; gap: 8px; padding: 8px 12px; border-bottom: 1px solid rgba(0, 0, 0, 0.1); background: none 0% 0% / auto repeat scroll padding-box border-box rgb(248, 244, 241);"><h5 style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin: 0px; padding: revert; font-style: normal !important; font-variant: normal !important; font-weight: 400 !important; font-stretch: 100% !important; line-height: 18px; font-family: roboto, helvetica, sans-serif !important; font-optical-sizing: auto !important; font-size-adjust: none !important; font-kerning: auto !important; font-feature-settings: normal !important; font-variation-settings: normal !important; font-language-override: normal !important; font-size: 16px; display: inline-block; color: rgb(60, 81, 180);">Csharp</h5><div style="height: 28px;"><button type="button" tabindex="" title="Copy code" style="box-sizing: border-box; margin: 0px; padding: 0px; font: 400 13px / 20px roboto, helvetica, sans-serif; background-color: rgb(217, 223, 251); border: 1px solid rgba(0, 0, 0, 0); display: grid; grid-auto-flow: column; align-items: center; cursor: pointer; color: rgb(60, 81, 180) !important; text-decoration: none !important; border-radius: 9999px; block-size: 28px; gap: 2px; padding-inline: 10px;"><div style="box-sizing: border-box; margin: 0px; padding: 0px; min-inline-size: 0px; max-inline-size: 100%; white-space: nowrap; text-overflow: ellipsis; overflow: clip; max-block-size: calc(1lh); padding-inline: 2px;">Copy code</div></button></div></div><code style="border-radius: 8px; background: none 0% 0% / auto repeat scroll padding-box border-box rgb(255, 255, 255); display: block; white-space: pre-wrap; overflow-wrap: anywhere; padding: 8px 16px 16px;">// Models/PaymentType.cs
public class PaymentType
{
 public int Id { get; set; }
 public string Name { get; set; } = string.Empty;

 public ICollection&lt;PaymentMethod&gt; PaymentMethods { get; set; } = new List&lt;PaymentMethod&gt;();
}

// Models/PaymentMethod.cs
public class PaymentMethod
{
 public int Id { get; set; }
 public string Name { get; set; } = string.Empty;

 public int PaymentTypeId { get; set; }
 public PaymentType PaymentType { get; set; } = null!;
}
</code></pre><h2 data-bm="17" style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin: revert; padding: revert; font: 22px / 24px roboto, helvetica, sans-serif; height: 32px; -webkit-line-clamp: 1; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-box-orient: vertical; color: rgba(0, 0, 0, 0.8); letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">2. DbContext</h2><pre data-priority="2" data-bm="18" style="background: none 0% 0% / auto repeat scroll padding-box border-box rgb(245, 245, 245); border: 1px solid rgba(0, 0, 0, 0.1); border-radius: 8px; overflow: hidden; color: rgba(0, 0, 0, 0.8); font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><div data-bm="24" style="display: flex; height: 28px; flex-direction: row; justify-content: space-between; align-items: center; gap: 8px; padding: 8px 12px; border-bottom: 1px solid rgba(0, 0, 0, 0.1); background: none 0% 0% / auto repeat scroll padding-box border-box rgb(248, 244, 241);"><h5 style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin: 0px; padding: revert; font-style: normal !important; font-variant: normal !important; font-weight: 400 !important; font-stretch: 100% !important; line-height: 18px; font-family: roboto, helvetica, sans-serif !important; font-optical-sizing: auto !important; font-size-adjust: none !important; font-kerning: auto !important; font-feature-settings: normal !important; font-variation-settings: normal !important; font-language-override: normal !important; font-size: 16px; display: inline-block; color: rgb(60, 81, 180);">Csharp</h5><div style="height: 28px;"><button type="button" tabindex="" title="Copy code" style="box-sizing: border-box; margin: 0px; padding: 0px; font: 400 13px / 20px roboto, helvetica, sans-serif; background-color: rgb(217, 223, 251); border: 1px solid rgba(0, 0, 0, 0); display: grid; grid-auto-flow: column; align-items: center; cursor: pointer; color: rgb(60, 81, 180) !important; text-decoration: none !important; border-radius: 9999px; block-size: 28px; gap: 2px; padding-inline: 10px;"><div style="box-sizing: border-box; margin: 0px; padding: 0px; min-inline-size: 0px; max-inline-size: 100%; white-space: nowrap; text-overflow: ellipsis; overflow: clip; max-block-size: calc(1lh); padding-inline: 2px;">Copy code</div></button></div></div><code style="border-radius: 8px; background: none 0% 0% / auto repeat scroll padding-box border-box rgb(255, 255, 255); display: block; white-space: pre-wrap; overflow-wrap: anywhere; padding: 8px 16px 16px;">public class AppDbContext : DbContext
{
 public DbSet&lt;PaymentType&gt; PaymentTypes { get; set; }
 public DbSet&lt;PaymentMethod&gt; PaymentMethods { get; set; }

 public AppDbContext(DbContextOptions&lt;AppDbContext&gt; options) : base(options) { }
}
</code></pre><h2 data-bm="19" style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin: revert; padding: revert; font: 22px / 24px roboto, helvetica, sans-serif; height: 32px; -webkit-line-clamp: 1; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-box-orient: vertical; color: rgba(0, 0, 0, 0.8); letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">3. コントローラー</h2><pre data-priority="2" data-bm="20" style="background: none 0% 0% / auto repeat scroll padding-box border-box rgb(245, 245, 245); border: 1px solid rgba(0, 0, 0, 0.1); border-radius: 8px; overflow: hidden; color: rgba(0, 0, 0, 0.8); font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><div data-bm="25" style="display: flex; height: 28px; flex-direction: row; justify-content: space-between; align-items: center; gap: 8px; padding: 8px 12px; border-bottom: 1px solid rgba(0, 0, 0, 0.1); background: none 0% 0% / auto repeat scroll padding-box border-box rgb(248, 244, 241);"><h5 style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin: 0px; padding: revert; font-style: normal !important; font-variant: normal !important; font-weight: 400 !important; font-stretch: 100% !important; line-height: 18px; font-family: roboto, helvetica, sans-serif !important; font-optical-sizing: auto !important; font-size-adjust: none !important; font-kerning: auto !important; font-feature-settings: normal !important; font-variation-settings: normal !important; font-language-override: normal !important; font-size: 16px; display: inline-block; color: rgb(60, 81, 180);">Csharp</h5><div style="height: 28px;"><button type="button" tabindex="" title="Copy code" style="box-sizing: border-box; margin: 0px; padding: 0px; font: 400 13px / 20px roboto, helvetica, sans-serif; background-color: rgb(217, 223, 251); border: 1px solid rgba(0, 0, 0, 0); display: grid; grid-auto-flow: column; align-items: center; cursor: pointer; color: rgb(60, 81, 180) !important; text-decoration: none !important; border-radius: 9999px; block-size: 28px; gap: 2px; padding-inline: 10px;"><div style="box-sizing: border-box; margin: 0px; padding: 0px; min-inline-size: 0px; max-inline-size: 100%; white-space: nowrap; text-overflow: ellipsis; overflow: clip; max-block-size: calc(1lh); padding-inline: 2px;">Copy code</div></button></div></div><code style="border-radius: 8px; background: none 0% 0% / auto repeat scroll padding-box border-box rgb(255, 255, 255); display: block; white-space: pre-wrap; overflow-wrap: anywhere; padding: 8px 16px 16px;">public class PaymentsController : Controller
{
 private readonly AppDbContext _context;

 public PaymentsController(AppDbContext context)
 {
 _context = context;
 }

 public IActionResult Create()
 {
 ViewData[&quot;PaymentTypeId&quot;] = new SelectList(_context.PaymentTypes, &quot;Id&quot;, &quot;Name&quot;);
 ViewData[&quot;PaymentMethodId&quot;] = new SelectList(Enumerable.Empty&lt;SelectListItem&gt;());
 return View();
 }

 [HttpPost]
 public IActionResult Create(int PaymentTypeId, int PaymentMethodId)
 {
 // 保存処理（例: 注文や支払いレコード）
 return RedirectToAction(nameof(Create));
 }

 // 親追加
 [HttpPost]
 public IActionResult AddPaymentType(string name)
 {
 if (string.IsNullOrWhiteSpace(name))
 return BadRequest(&quot;Name is required&quot;);

 var type = new PaymentType { Name = name };
 _context.PaymentTypes.Add(type);
 _context.SaveChanges();

 return Json(new { id = type.Id, name = type.Name });
 }

 // 子追加
 [HttpPost]
 public IActionResult AddPaymentMethod(int paymentTypeId, string name)
 {
 if (string.IsNullOrWhiteSpace(name))
 return BadRequest(&quot;Name is required&quot;);

 var method = new PaymentMethod { Name = name, PaymentTypeId = paymentTypeId };
 _context.PaymentMethods.Add(method);
 _context.SaveChanges();

 return Json(new { id = method.Id, name = method.Name });
 }

 // 子リスト取得
 [HttpGet]
 public IActionResult GetPaymentMethods(int paymentTypeId)
 {
 var methods = _context.PaymentMethods
 .Where(m =&gt; m.PaymentTypeId == paymentTypeId)
 .Select(m =&gt; new { id = m.Id, name = m.Name })
 .ToList();

 return Json(methods);
 }
}
</code></pre><h2 data-bm="21" style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin: revert; padding: revert; font: 22px / 24px roboto, helvetica, sans-serif; height: 32px; -webkit-line-clamp: 1; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-box-orient: vertical; color: rgba(0, 0, 0, 0.8); letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">4. Create.cshtml</h2><pre data-priority="2" data-bm="22" style="background: none 0% 0% / auto repeat scroll padding-box border-box rgb(245, 245, 245); border: 1px solid rgba(0, 0, 0, 0.1); border-radius: 8px; overflow: hidden; color: rgba(0, 0, 0, 0.8); font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><div data-bm="26" style="display: flex; height: 28px; flex-direction: row; justify-content: space-between; align-items: center; gap: 8px; padding: 8px 12px; border-bottom: 1px solid rgba(0, 0, 0, 0.1); background: none 0% 0% / auto repeat scroll padding-box border-box rgb(248, 244, 241);"><h5 style="border: 0px; border-collapse: collapse; border-spacing: 0px; list-style-position: initial; list-style-image: initial; list-style-type: revert; margin: 0px; padding: revert; font-style: normal !important; font-variant: normal !important; font-weight: 400 !important; font-stretch: 100% !important; line-height: 18px; font-family: roboto, helvetica, sans-serif !important; font-optical-sizing: auto !important; font-size-adjust: none !important; font-kerning: auto !important; font-feature-settings: normal !important; font-variation-settings: normal !important; font-language-override: normal !important; font-size: 16px; display: inline-block; color: rgb(60, 81, 180);">Html</h5><div style="height: 28px;"><button type="button" tabindex="" title="Copy code" style="box-sizing: border-box; margin: 0px; padding: 0px; font: 400 13px / 20px roboto, helvetica, sans-serif; background-color: rgb(217, 223, 251); border: 1px solid rgba(0, 0, 0, 0); display: grid; grid-auto-flow: column; align-items: center; cursor: pointer; color: rgb(60, 81, 180) !important; text-decoration: none !important; border-radius: 9999px; block-size: 28px; gap: 2px; padding-inline: 10px;"><div style="box-sizing: border-box; margin: 0px; padding: 0px; min-inline-size: 0px; max-inline-size: 100%; white-space: nowrap; text-overflow: ellipsis; overflow: clip; max-block-size: calc(1lh); padding-inline: 2px;">Copy code</div></button></div></div><code style="border-radius: 8px; background: none 0% 0% / auto repeat scroll padding-box border-box rgb(255, 255, 255); display: block; white-space: pre-wrap; overflow-wrap: anywhere; padding: 8px 16px 16px;">@{
 ViewData[&quot;Title&quot;] = &quot;Create Payment&quot;;
}
&lt;link rel=&quot;stylesheet&quot; href=&quot;https://cdn.jsdelivr.net/npm/sweetalert2@11/dist/sweetalert2.min.css&quot;&gt;
&lt;script src=&quot;https://cdn.jsdelivr.net/npm/sweetalert2@11&quot;&gt;&lt;/script&gt;

&lt;form asp-action=&quot;Create&quot; method=&quot;post&quot;&gt;
 &lt;div class=&quot;form-group&quot;&gt;
 &lt;label&gt;Payment Type&lt;/label&gt;
 &lt;div class=&quot;input-group&quot;&gt;
 &lt;select asp-for=&quot;PaymentTypeId&quot; class=&quot;form-control&quot; asp-items=&quot;@(ViewData[&quot;PaymentTypeId&quot;] as SelectList)&quot; id=&quot;PaymentTypeId&quot;&gt;&lt;/select&gt;
 &lt;button type=&quot;button&quot; class=&quot;btn btn-outline-primary&quot; id=&quot;btnAddType&quot;&gt;＋&lt;/button&gt;
 &lt;/div&gt;
 &lt;/div&gt;

 &lt;div class=&quot;form-group mt-3&quot;&gt;
 &lt;label&gt;Payment Method&lt;/label&gt;
 &lt;div class=&quot;input-group&quot;&gt;
 &lt;select asp-for=&quot;PaymentMethodId&quot; class=&quot;form-control&quot; asp-items=&quot;@(ViewData[&quot;PaymentMethodId&quot;] as SelectList)&quot; id=&quot;PaymentMethodId&quot;&gt;&lt;/select&gt;
 &lt;button type=&quot;button&quot; class=&quot;btn btn-outline-primary&quot; id=&quot;btnAddMethod&quot;&gt;＋&lt;/button&gt;
 &lt;/div&gt;
 &lt;/div&gt;

 &lt;button type=&quot;submit&quot; class=&quot;btn btn-success mt-3&quot;&gt;Save&lt;/button&gt;
&lt;/form&gt;

&lt;script&gt;
document.getElementById(&quot;PaymentTypeId&quot;).addEventListener(&quot;change&quot;, function () {
 const typeId = this.value;
 fetch(`/Payments/GetPaymentMethods?paymentTypeId=${typeId}`)
 .then(res =&gt; res.json())
 .then(data =&gt; {
 const methodSelect = document.getElementById(&quot;PaymentMethodId&quot;);
 methodSelect.innerHTML = &quot;&quot;;
 data.forEach(m =&gt; {
 methodSelect.innerHTML += `&lt;option value=&quot;${m.id}&quot;&gt;${m.name}&lt;/option&gt;`;
 });
 });
});

document.getElementById(&quot;btnAddType&quot;).addEventListener(&quot;click&quot;, function () {
 Swal.fire({
 title: &#39;新しいPayment Type&#39;,
 input: &#39;text&#39;,
 inputPlaceholder: &#39;Type name&#39;,
 showCancelButton: true,
 confirmButtonText: &#39;追加&#39;
 }).then(result =&gt; {
 if (result.isConfirmed &amp;&amp; result.value.trim() !== &quot;&quot;) {
 fetch(&#39;/Payments/AddPaymentType&#39;, {
 method: &#39;POST&#39;,
 headers: { &#39;Content-Type&#39;: &#39;application/x-www-form-urlencoded&#39; },
 body: `name=${encodeURIComponent(result.value)}`
 })
 .then(res =&gt; res.json())
 .then(data =&gt; {
 const select = document.getElementById(&quot;PaymentTypeId&quot;);
 const option = new Option(data.name, data.id, true, true);
 select.add(option);
 select.dispatchEvent(new Event(&#39;change&#39;)); // 子更新
 });
 }
 });
});

document.getElementById(&quot;btnAddMethod&quot;).addEventListener(&quot;click&quot;, function () {
 const typeId = document.getElementById(&quot;PaymentTypeId&quot;).value;
 if (!typeId) {
 Swal.fire(&#39;先にPayment Typeを選択してください&#39;);
 return;
 }
 Swal.fire({
 title: &#39;新しいPayment Method&#39;,
 input: &#39;text&#39;,
 inputPlaceholder: &#39;Method name&#39;,
 showCancelButton: true,
 confirmButtonText: &#39;追加&#39;
 }).then(result =&gt; {
 if (result.isConfirmed &amp;&amp; result.value.trim() !== &quot;&quot;) {
 fetch(&#39;/Payments/AddPaymentMethod&#39;, {
 method: &#39;POST&#39;,
 headers: { &#39;Content-Type&#39;: &#39;application/x-www-form-urlencoded&#39; },
 body: `paymentTypeId=${typeId}&amp;name=${encodeURIComponent(result.value)}`
 })
 .then(res =&gt; res.json())
 .then(data =&gt; {
 const</code></pre>Powered by <a href="https://www.froala.com/wysiwyg-editor?pb=1" title="Froala Editor">Froala Editor</a>

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