#13 file list on paper page

src/main/java/ru/ulstu/file/model/FileDataDto.java

@@ -9,12 +9,13 @@ public class FileDataDto {
     private Integer id;
     private String name;
     private long size;
-
     private Date createDate;
     private byte[] data;
     private String fileName;
     private String tmpFileName;
 
+    private boolean deleteFlag;
+
     public FileDataDto() {
     }
 
@@ -99,4 +100,12 @@ public class FileDataDto {
         this.tmpFileName = tmpFileName;
     }
 
+    public boolean isDeleteFlag() {
+        return deleteFlag;
+    }
+
+    public void setDeleteFlag(boolean deleteFlag) {
+        this.deleteFlag = deleteFlag;
+    }
+
 }

src/main/java/ru/ulstu/file/service/FileService.java

@@ -110,4 +110,10 @@ public class FileService {
         fileData.setSize(fileDataDto.getSize());
         return fileData;
     }
+
+    @Transactional
+    public void delete(Integer fileId) throws IOException {
+        FileData file = fileRepository.findOne(fileId);
+        fileRepository.delete(file);
+    }
 }

src/main/java/ru/ulstu/paper/service/PaperService.java

@@ -5,6 +5,7 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import ru.ulstu.deadline.model.Deadline;
 import ru.ulstu.deadline.service.DeadlineService;
+import ru.ulstu.file.model.FileDataDto;
 import ru.ulstu.file.service.FileService;
 import ru.ulstu.paper.model.Paper;
 import ru.ulstu.paper.model.PaperDto;
@@ -80,7 +81,7 @@ public class PaperService {
         paper.setTitle(paperDto.getTitle());
         paper.setUpdateDate(new Date());
         paper.setDeadlines(deadlineService.saveOrCreate(paperDto.getDeadlines()));
-        paper.setFiles(fileService.saveOrCreate(paperDto.getFiles()));
+        paper.setFiles(fileService.saveOrCreate(paperDto.getFiles().stream().filter(f -> f.isDeleteFlag() == false).collect(Collectors.toList())));
         paper.getAuthors().clear();
         if (paperDto.getAuthorIds() != null && !paperDto.getAuthorIds().isEmpty()) {
             paperDto.getAuthorIds().forEach(authorIds -> paper.getAuthors().add(userService.findById(authorIds)));
@@ -93,6 +94,11 @@ public class PaperService {
         Paper paper = paperRepository.findOne(paperDto.getId());
         Paper.PaperStatus oldStatus = paper.getStatus();
         Set<User> oldAuthors = new HashSet<>(paper.getAuthors());
+
+        for (FileDataDto file : paperDto.getFiles().stream().filter(f -> f.isDeleteFlag() == true && f.getId() != null).collect(Collectors.toList())) {
+            fileService.delete(file.getId());
+        }
+
         paperRepository.save(copyFromDto(paper, paperDto));
 
         paper.getAuthors().forEach(author -> {

src/main/resources/db/changelog-20190318_000000-schema.xml

@@ -8,16 +8,5 @@
             <column name="paper_id" type="integer"/>
         </addColumn>
 
-        <createTable tableName="paper_files">
-            <column name="paper_id" type="integer"/>
-            <column name="file_id" type="integer"/>
-        </createTable>
-        <addForeignKeyConstraint baseTableName="paper_files" baseColumnNames="paper_id"
-                                 constraintName="fk_paper_paper_files" referencedTableName="paper"
-                                 referencedColumnNames="id"/>
-        <addForeignKeyConstraint baseTableName="paper_files" baseColumnNames="file_id"
-                                 constraintName="fk_file_paper_files" referencedTableName="file"
-                                 referencedColumnNames="id"/>
-
     </changeSet>
 </databaseChangeLog>

src/main/resources/templates/papers/paper.html

@@ -91,6 +91,28 @@
                                     <p th:if="${#fields.hasErrors('authorIds')}" th:errors="*{authorIds}"
                                        class="alert alert-danger">Incorrect title</p>
                                 </div>
+
+                                <div class="form-group">
+                                    <label>Файлы:</label>
+                                    <th:block th:each="file, rowStat : *{files}">
+                                        <div class="row" th:id="|files${rowStat.index}|"
+                                             th:style="${file.deleteFlag} ? 'display: none;' :''">
+                                            <input type="hidden" th:field="*{files[__${rowStat.index}__].id}"/>
+                                            <input type="hidden" th:field="*{files[__${rowStat.index}__].deleteFlag}"/>
+                                            <input type="hidden" th:field="*{files[__${rowStat.index}__].name}"/>
+                                            <div class="col-2">
+                                                <a class="btn btn-danger float-right"
+                                                   th:onclick="|$('#files${rowStat.index}\\.deleteFlag').val('true'); $('#files${rowStat.index}').hide(); |">
+                                                    <span aria-hidden="true"><i class="fa fa-times"/></span>
+                                                </a>
+                                            </div>
+                                            <div class="col-10">
+                                                <div th:text="*{files[__${rowStat.index}__].name}"></div>
+                                            </div>
+                                        </div>
+                                    </th:block>
+                                </div>
+
                                 <div class="form-check">
                                     <input type="checkbox" class="form-check-input" id="locked"
                                            th:field="*{locked}"/>