Добавление количества страниц книгам

library_service/static/page/book.js

@@ -234,6 +234,12 @@ $(document).ready(() => {
   function renderBook(book) {
     $("#book-title").text(book.title);
     $("#book-id").text(`ID: ${book.id}`);
+    if (book.page_count && book.page_count > 0) {
+      $("#book-page-count-value").text(book.page_count);
+      $("#book-page-count-text").removeClass("hidden");
+    } else {
+      $("#book-page-count-text").addClass("hidden");
+    }
     $("#book-authors-text").text(
       book.authors.map((a) => a.name).join(", ") || "Автор неизвестен",
     );

library_service/static/page/books.js

@@ -180,6 +180,11 @@ $(document).ready(() => {
       clone.querySelector(".book-title").textContent = book.title;
       clone.querySelector(".book-authors").textContent =
         book.authors.map((a) => a.name).join(", ") || "Автор неизвестен";
+      if (book.page_count && book.page_count > 0) {
+        const pageEl = clone.querySelector(".book-page-count");
+        pageEl.querySelector(".page-count-value").textContent = book.page_count;
+        pageEl.classList.remove("hidden");
+      }
       clone.querySelector(".book-desc").textContent = book.description || "";
 
       const statusConfig = getStatusConfig(book.status);

library_service/static/page/create_book.js

@@ -235,18 +235,25 @@ $(document).ready(() => {
 
     const title = $("#book-title").val().trim();
     const description = $("#book-description").val().trim();
+    const pageCount = parseInt($("#book-page-count").val()) || null;
 
     if (!title) {
       Utils.showToast("Введите название книги", "error");
       return;
     }
 
+    if (!parseInt(pageCount)) {
+      Utils.showToast("Введите количество страниц", "error");
+      return;
+    }
+
     setLoading(true);
 
     try {
       const bookPayload = {
         title: title,
         description: description || null,
+        page_count: pageCount ? parseInt(pageCount) : null,
       };
 
       const createdBook = await Api.post("/api/books/", bookPayload);

library_service/static/page/edit_book.js

@@ -23,6 +23,7 @@ $(document).ready(() => {
   const $titleInput = $("#book-title");
   const $descInput = $("#book-description");
   const $statusSelect = $("#book-status");
+  const $pagesInput = $("#book-page-count");
   const $submitBtn = $("#submit-btn");
   const $submitText = $("#submit-text");
   const $loadingSpinner = $("#loading-spinner");
@@ -69,6 +70,7 @@ $(document).ready(() => {
   function populateForm(book) {
     $titleInput.val(book.title);
     $descInput.val(book.description || "");
+    $pagesInput.val(book.page_count);
     $statusSelect.val(book.status);
     updateCounters();
   }
@@ -329,6 +331,7 @@ $(document).ready(() => {
 
     const title = $titleInput.val().trim();
     const description = $descInput.val().trim();
+    const pages = $pagesInput.val();
     const status = $statusSelect.val();
 
     if (!title) {
@@ -340,6 +343,7 @@ $(document).ready(() => {
     if (title !== originalBook.title) payload.title = title;
     if (description !== (originalBook.description || ""))
       payload.description = description || null;
+    if (pageCount !== originalBook.page_count) payload.page_count = pages;
     if (status !== originalBook.status) payload.status = status;
 
     if (Object.keys(payload).length === 0) {

library_service/static/utils.js

@@ -19,8 +19,8 @@ const StorageHelper = {
 
 const Utils = {
   escapeHtml: (text) => {
-    if (!text) return "";
-    return text.replace(
+    if (text === null || text === undefined) return "";
+    return String(text).replace(
       /[&<>"']/g,
       (m) =>
         ({