Can you render jsp/html elements (i.e. a form:form) dynamically in one page? - spring

I am new to web-dev, and coding in general, so I apologize if this question doesn't make sense.
Background: I am working on a web application utilizing the Spring Framework. My application allows users to register a user account, post pictures, make comments on pictures, like pictures etc. (think of a mini Pintrest clone). Users and comments (along with some other non-relevant entities) are all saved as in table entities in a MySQL database.
Problem: I would like users be able to edit their comments after they post them. For the best user experience I do not want users to be taken to a separate page with a form to edit their comment. I would like user to be able to edit their comment in a single page/the same page, without rendering a new one. Flow goes something like this: User goes to their comment on a picture, presses an "edit" button/link and the comment is put in a text box (form:form) which is then editable.
So far I have tried conditional rendering with a boolean switch of "editPressed" but I can't seem to work out the logic. Is this the correct approach or should something like JS be used here? (not sure how js handles form:forms) Below are some code snippets of the models and the .jsp where the comment would be edited.
.jsp:
<c:forEach var="eachComment" items="${allCommentsByPhotoId}">
<div class="card-text d-flex gap-2 mb-4">
<img class="user-comment-card" src="https://cdn-icons-png.flaticon.com/512/1053/1053244.png" alt="" />
<div>
<div class="mb-2">
<c:choose>
<c:when test="${ editPressed == false }">
<c:out value="${eachComment.user.getFirstName()} says: ${ eachComment.getComment() }"></c:out>
</c:when>
<c:otherwise>
<span class="username">
<c:out value="${eachComment.user.getFirstName()}"></c:out>:
</span>
<c:out value="${ eachComment.getComment()}"></c:out>
</c:otherwise>
</c:choose>
</div>
<div class="d-flex align-items-center gap-3">
<!-- -->
<c:if test="${ eachComment.user.getId() == currentUser.id }">
<form:form action="/delete/${eachComment.getId()}" method="delete">
<p class="submit">
<input class="btn btn-danger del-cmt-btn" type="submit" value="Delete" />
</p>
</form:form>
<form:form action="/edit/comment/${eachComment.getId()}">
<p class="submit">
<input class="btn btn-secondary edit-cmt-btn" type="submit" value="Edit" />
</p>
</form:form>
</c:if>
</div>
</div>
</div>
</c:forEach>
Comment Model:
#Entity
#Table(name="user_comments_on_photo")
public class Comment {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String comment;
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name="user_id")
private User user;
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name="photo_id")
private Photo photo;
#ManyToMany(fetch=FetchType.LAZY)
#JoinTable(
name="user_likes_comment",
joinColumns = #JoinColumn(name="comment_id"),
inverseJoinColumns = #JoinColumn(name="user_id")
)
private List<User> usersWhoLikeComment;
#Column(updatable=false)
#DateTimeFormat(pattern="yyyy-MM-dd")
private Date createdAt;
#DateTimeFormat(pattern="yyyy-MM-dd")
private Date updatedAt;
USER MODEL:
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
private Long id;
#Size(min=3)
private String firstName;
#Size(min=3)
private String lastName;
#Email
private String email;
#Size(min=8)
private String password;
#Transient
private String passwordConfirmation;
#Column(updatable=false)
private Date createdAt;
private Date updatedAt;
//RELATIONSHIPS
#OneToMany(mappedBy="user", fetch = FetchType.LAZY)
private List<Photo> photos;
#ManyToMany(fetch = FetchType.LAZY)
#JoinTable(
name = "user_likes_photo",
joinColumns = #JoinColumn(name="user_id"),
inverseJoinColumns = #JoinColumn(name="photo_id")
)
private List<Photo> likedPhotos;
//NEW ONE-TO-MANY
#OneToMany(mappedBy = "user", fetch = FetchType.LAZY)
private List<Comment> userComments;
#ManyToMany(fetch=FetchType.LAZY)
#JoinTable(
name="user_likes_comment",
joinColumns = #JoinColumn(name="user_id"),
inverseJoinColumns = #JoinColumn(name="comment_id")
)
private List<Comment> commentsUserLikes;
#ManyToMany(fetch = FetchType.EAGER)
#JoinTable(
name = "users_roles",
joinColumns = #JoinColumn(name = "user_id"),
inverseJoinColumns = #JoinColumn(name = "role_id"))
private List<Role> roles;
PHOTO MODEL:
#Entity
#Table(name="photos")
public class Photo {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String photoURL;
private String photoFileName;
#NotEmpty
private String photoTitle;
#NotEmpty
private String photoDescription;
//will add tags later
//RELATIONSHIPS
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name="user_id")
private User user;
#ManyToMany(fetch=FetchType.LAZY)
#JoinTable(
name="user_likes_photo",
joinColumns = #JoinColumn(name="photo_id"),
inverseJoinColumns = #JoinColumn(name="user_id")
)
private List<User> usersWhoLikePhoto;
//NEW ONE-TO-MANY
#OneToMany(mappedBy="photo", fetch = FetchType.LAZY)
private List<Comment> comments;
//CREATED AND UPDATED AT
#Column(updatable=false)
#DateTimeFormat(pattern="yyyy-MM-dd")
private Date createdAt;
#DateTimeFormat(pattern="yyyy-MM-dd")
private Date updatedAt;

Related

How to retrieve data from connected table with connected ID

I have tables like this:
User:
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
#NotEmpty
#Size(min = 3, max = 20)
private String username;
... more fields, not important
Wallet:
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
#NotEmpty(message = "Please, insert a wallet name")
private String walletName;
private double initialBalance;
#ManyToOne(fetch = FetchType.LAZY, optional = false)
#JoinColumn(name = "user_id", nullable = false)
#OnDelete(action = OnDeleteAction.CASCADE)
#JsonIgnore
private User user;
As you can see those two tables are connected, and I can assignee wallet to user.
Now, I created a userProfile HTML page and want to display next stuff: Username, email, initalBalance.
I managed somehow to get principals from logged user:
<h1>Username </h1>
<h1 th:text="${#authentication.getPrincipal().getUsername()}"></h1>
<br>
<h1>Email </h1>
<h1 th:text="${#authentication.getPrincipal().getEmail()}"></h1>
But I have problem to show initialBalance of his wallet.
When I try with walletRepository.findAll() obviously that return initialBalances from all users.
This is how I tried so far:
#GetMapping("/userWallet/{user_id}/balance")
public String getUserWallet(#PathVariable(value = "user_id") Long user_id, Model model, Wallet wallet) {
model.addAttribute("wallet", walletRepository.findByUserIdAndInitialBalance(user_id, wallet.getInitialBalance()));
return "userProfile";
}
And in HTML:
<tr th:each="wallets:${wallet}">
<div class="title">
<h1>Balance </h1>
<h1 th:text="${wallets.initialBalance}"></h1>
</div>
But nothing is printed at screen.
So just to be clear, I want to provide a initialBalance from user wallet.

How to prevent user from injecting field into form backing bean?

An user upload his comment via this form.
Thymeleaf
<form th:action="#{/comment}" th:id="form" method="post">
<input type="hidden" th:name="productId.id" th:value="${product.id}">
<textarea th:field="${comment.message}" class="comment"
placeholder="Write comment here"></textarea>
<input type="submit" id="submit" value="comment">
</form>
Actual HTML
<form action="/comment" id="form" method="post" class="">
<input type="hidden" name="_csrf" value="f6b3f296-3284-4d2d-a2b2-0a9975f5e071">
<input type="hidden" name="productId.id" value="38">
<textarea class="comment" placeholder="Write comment here" id="message" name="message"></textarea>
<input type="submit" id="submit" value="comment">
</form>
However if user overwrites the actual HTML like this, the product's name will be changed to "ABCD"
<form action="/comment" id="form" method="post" class=""><input type="hidden" name="_csrf" value="f6b3f296-3284-4d2d-a2b2-0a9975f5e071">
<input type="hidden" name="productId" value="38">
<input type="hidden" name="productId.name" value="ABCD">
<textarea class="comment" placeholder="Write comment here" id="message" name="message"></textarea>
<input type="submit" id="submit" value="comment">
</form>
I think what happened here is Spring queried the productId and it became managed Entity, and when the user set the name to be "ABCD", it would be saved.
Here is my solution:
Basically just use #Validated with a bunch of groups and put constraint with appropriate groups (UploadCommentValidation in this case) on every single field, which works but seems really messy especially when it gets big.
Example with upload comment above:
Comment Entity: productId and message must be #Not Null, productId must be #Valid,other fields must be #Null
Product Entity: Id must be #NotNull, other fields must be #Null
Comment entity
public class Comment implements Comparable<Comment> {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Null(groups = {UploadCommentValidation.class})
#NotNull(groups = {DeleteCommentValidation.class, UpdateCommentValidation.class})
private Integer id;
#ManyToOne
#JoinColumn(name = "product_id", referencedColumnName = "id")
#JsonBackReference
#Valid
#NotNull(groups = {UploadCommentValidation.class})
#Null(groups = {DeleteCommentValidation.class, UpdateCommentValidation.class})
private Product productId;
#ManyToOne
#JoinColumn(name = "user_id", referencedColumnName = "id")
#JsonBackReference
#Null(groups = {UploadCommentValidation.class, DeleteCommentValidation.class, UpdateCommentValidation.class})
private User userId;
#Column(name = "message")
#NotBlank(message = "please write a comment", groups = {UploadCommentValidation.class, UpdateCommentValidation.class})
#Null(groups = {DeleteCommentValidation.class})
private String message;
#Column(name = "created_at", insertable = false, columnDefinition = "timestamp with time zone not null")
#Temporal(TemporalType.TIMESTAMP)
#Null(groups = {UploadCommentValidation.class, DeleteCommentValidation.class, UpdateCommentValidation.class})
private Calendar createdAt;
#Column(name = "updated_at", columnDefinition = "timestamp with time zone not null")
#Temporal(TemporalType.TIMESTAMP)
#Null(groups = {UploadCommentValidation.class, DeleteCommentValidation.class, UpdateCommentValidation.class})
private Calendar updatedAt;
#Override
public int compareTo(Comment o) {
return this.getId().compareTo(o.getId());
}
}
Product entity
public class Product implements Serializable {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#NotNull(message = "product id null", groups = {AddOrderValidation.class, UploadCommentValidation.class})
#Null(message = "bad request", groups = {ProductRegisterValidation.class})
private Integer id;
#NotBlank(message = "please fill in product name", groups = {ProductRegisterValidation.class})
#Length(max = 255, message = "too long", groups = {ProductRegisterValidation.class})
#Null(groups = {AddOrderValidation.class, UploadCommentValidation.class})
#Column(name = "name")
private String name;
#Column(name = "price")
#Positive(message = "the price must be non-negative", groups = {ProductRegisterValidation.class})
#NotNull(message = "please fill in price", groups = {ProductRegisterValidation.class})
#Null(groups = {AddOrderValidation.class, UploadCommentValidation.class})
private Integer price;
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name = "category_id", referencedColumnName = "id")
#Valid
#NotNull(message = "please select category name", groups = {ProductRegisterValidation.class})
#Null(groups = {AddOrderValidation.class, UploadCommentValidation.class})
private Category categoryId;
#NotBlank(message = "please fill in description", groups = {ProductRegisterValidation.class})
#Length(max = 10000, message = "too long", groups = {ProductRegisterValidation.class})
#Null(groups = {AddOrderValidation.class, UploadCommentValidation.class})
#Column(name = "description")
private String description;
#OneToMany(mappedBy = "product", cascade = CascadeType.ALL, fetch = FetchType.LAZY)
#Null(groups = {ProductRegisterValidation.class, AddOrderValidation.class, UploadCommentValidation.class})
private List<ProductImage> productImages;
#OneToOne(mappedBy = "product", cascade = CascadeType.ALL, fetch = FetchType.LAZY)
#Null(groups = {ProductRegisterValidation.class, AddOrderValidation.class, UploadCommentValidation.class})
private Thumbnail thumbnail;
#OneToMany(mappedBy = "productId", fetch = FetchType.LAZY)
#JsonManagedReference
#Null(groups = {ProductRegisterValidation.class, AddOrderValidation.class, UploadCommentValidation.class})
private List<Comment> comments;
#OneToMany(mappedBy = "product", fetch = FetchType.LAZY)
#Null(groups = {ProductRegisterValidation.class, AddOrderValidation.class, UploadCommentValidation.class})
private List<Order> orders;
}
Any ideas how to do it the right way? This seems super messy!
UPDATE 1: This is my rest controller
#PostMapping("/comment")
public ResponseEntity<Map<String, String>> commentResponseEntity(#Validated({UploadCommentValidation.class}) Comment comment, BindingResult result) {
if (result.hasErrors()) {
result.getAllErrors().forEach(System.out::println);
return ResponseEntity.noContent().build();
}
User user = getUser();
comment.setUserId(user);
commentRepository.saveAndFlush(comment);
Map<String, String> response = new HashMap<>();
response.put("comment", comment.getMessage());
response.put("user", user.getName());
response.put("commentId", comment.getId().toString());
return ResponseEntity.ok().body(response);
}
You can do this by registering an #InitBinder method
You can do this at the individual controller level or by registering a #ControllerAdvice to be applied to all, or a subset of all, controllers.
#InitBinder()
public void initBinder(WebDataBinder binder) {
binder.setDisallowedFields(new String[] { "id", "version" });
}

How to display an object that contains another object in thymeleaf

Hi I struggling to build a proper view in case, when I want to display the product entity, which is in a many-to-many relation with the category. The problem starts with the nested category. I have an error: Exception evaluating SpringEL expression: "category.name" (productList: 31) I will be very grateful for your help in solving this problem
View:
<tbody>
<tr data-th-each="product : ${products}">
<!--<td><input hidden="hidden" name="id" th:value="${product.id}" /></td>-->
<td th:text="${product.name}"></td>
<td th:text="${product.price}"></td>
<td th:each="category : ${product.categories}"></td>
<td th:text="${category.name}"></td>
<td th:text="${product.description}"></td>
<td th:text="${product.shippingWeight}"></td>
<td th:text="${product.quantity}"></td>
<td>delete</td>
</tr>
</tbody>
Entities:
#NoArgsConstructor
#AllArgsConstructor
#Getter
#Setter
#Entity
#Table(name = "products")
public class Product {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
#Column(name = "product_id")
private Long id;
private String name;
private BigDecimal price;
#ManyToMany(cascade = CascadeType.ALL,mappedBy = "products")
private List<Category> categories=new ArrayList<>();
private double shippingWeight;
private boolean isAvailable;
private String description;
private int quantity;
#Transient
private MultipartFile image;
Category:
#AllArgsConstructor
#NoArgsConstructor
#Getter
#Setter
#Entity
#Table(name = "categories")
public class Category {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
#Column(name = "category_id")
private Long id;
private String name;
private String description;
#ManyToMany(cascade = CascadeType.ALL)
#JoinTable(name = "join_category_product", joinColumns = {#JoinColumn(name = "category_id", referencedColumnName = "category_id")},
inverseJoinColumns = {#JoinColumn(name = "product_id", referencedColumnName = "product_id")})
private List<Product> products=new ArrayList<>();
#Transient
private MultipartFile image;
Controller:
#GetMapping("/productList")
public String productList(Model model) {
List<Product> product = productService.getProducts();
model.addAttribute("products",product);
return "productList";
You need to make sure that the Thymeleaf can understand the scope of your variables. In your post, you have category.name outside of the for loop. If categories is a property of product, you can do something like:
<tr th:each="product : ${products}">
<td th:text="${product.name}"></td>
<td th:text="${product.price}"></td>
<td>
<th:block th:each="category : ${product.categories}">
<th:block th:text="${category.name}">[category name]</th:block>
<br>
</th:block>
</td>
<td th:text="${product.description}"></td>
<td th:text="${product.shippingWeight}"></td>
<td th:text="${product.quantity}"></td>
<td>delete</td>
</tr>
If a product doesn't have a category, note that the above will still create a <td>. This is likely what you want.
Aside: it would also make sense to supply default values between your tags. This way, you can open up the file directly in a browser (without a container) and still see how it would lay out. This is a huge reason to use Thymeleaf. I included this with [category name] example above.
Otherwise, you can do the shorter version:
<td>[[${product.name}]]</td>

No values in dropdown lists with Thymeleaf and SpringBoot

I have a similar issue on my drop down list not showing any values. Like
the solution: dropdown lists with Thymeleaf and SpringBoot No data showing
in dropdown list. If I look in the IE debugger I can see my list for the
dropdown, but the dropdown won't display my list to pick from.
The HTML snippet is here:
<div class="col-lg-3 selectContainer">
<div class="input-group">
<span class="input-group-addon"><i
class="glyphicon glyphicon-list"></i></span>
<select th:field="*{savings_type}" name="savings_type_id"
id="savings_type_id" class="form-control selectpicker">
<option value="">Select Savings Type</option>
<option th:each="dropDownItem : ${leanTypesList}"
th:value="${dropDownItem.lt_id}"
th:text="${dropDownItem.lt_name}">
</option>
</select>
</div>
</div>
Code here:
My Model leanDeatil.java - data populating Savings_Type field
This is value is going too.
#Entity
#Table(name="lean_detail")
public class LeanDetail implements Serializable {
private static final long serialVersionUID = 1L;
#Id
//#Column (name="LEANDETAIL_ID")
#GeneratedValue(strategy=GenerationType.AUTO)
private int id;
#Column (name="SAVINGS_TYPE")
private int savings_type;
#Column (name="SAVING_AMOUNT")
private BigDecimal saving_amount;
#Column (name="TITLE")
private String title;
#Column (nullable=true, name="IMPROVEMENT_DESC")
private String improvement_desc;
#ManyToOne(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
#JoinColumn(name = "SAVINGS_TYPE", referencedColumnName = "lt_id",
insertable = false, updatable = false)
private LeanTypes leanTypes;
public LeanDetail(){}
public LeanDetail(String title,int savings_type, BigDecimal saving_amount,
String improvement_desc {
super();
this.title = title;
this.savings_type = savings_type;
this.saving_amount = saving_amount;
this.improvement_desc = improvement_desc;
}
getters and setters....
My Model leanTypes.java data coming from
#Entity
#Table(name="lean_types")
public class LeanTypes {
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
#Column (name="LT_ID")
private int lt_id;
#Column (name="LT_NAME")
private String lt_name;
#Column (name="LT_DESC")
private String lt_desc;
#Column(nullable=false, name="LT_ACTV")
private boolean lt_actv;
#OneToMany(mappedBy="leanTypes", fetch=FetchType.EAGER)
#Fetch(value = FetchMode.SUBSELECT)
private List<LeanDetail> leanDetail = new ArrayList<LeanDetail>();
public LeanTypes(){}
public LeanTypes(int lt_id, String lt_name, String lt_desc, Boolean lt_actv) {
super();
this.lt_id = lt_id;
this.lt_name = lt_name;
this.lt_desc = lt_desc;
this.lt_actv = lt_actv;
}
getters and setters....
}
From my Controller LeanDetail.java
#GetMapping("/update-leanDetail")
public String updateLeanDetail(#RequestParam int id, HttpServletRequest
request){
request.setAttribute("leanTypesList", leanTypesService.findAll());
request.setAttribute("leanDetail", leanDetailService.findLeanDetail
(id));
request.setAttribute("mode", "MODE_UPDATE");
return "leanDetail";
}

Spring 4 MVC Form: Create Object with list of sub objects

I looking for help in understanding how to create a new object through a form which has the user select multiple sub-objects (which will come pre-populated) and available to select with a checkbox.
OrderController.java
#RequestMapping(value = { "/order" }, method = RequestMethod.GET)
public String order(ModelMap model) {
List<Exam> exams = examService.findAllExams();
List<Document> documents = documentService.findAllDocuments();
model.addAttribute("exams", exams);
model.addAttribute("documents", documents);
return "order"; // jsp page reference
}
Order.java
#Entity
#Table(name="\"order\"")
public class Order implements Serializable
{
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
#Column(name = "order_id", unique = true, nullable = false)
private Integer id;
#GeneratedValue(generator = "uuid")
#GenericGenerator(name = "uuid", strategy = "uuid2")
#Column(name = "uuid", unique = true, nullable = false)
private String uuid;
#Temporal(TemporalType.DATE)
#Column(name = "order_date", unique = true, nullable = false)
private Date orderDate;
#Column(name="order_status", nullable=false)
private String orderStatus;
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name = "user_id", nullable = false)
private User user;
#OneToMany(fetch = FetchType.LAZY, mappedBy = "order")
private Set<OrderExam> orderExams = new HashSet<OrderExam>(0);
#OneToMany(fetch = FetchType.LAZY, mappedBy = "order")
private Set<OrderDocument> orderDocuments = new HashSet<OrderDocument(0);
//getters & setters
}
OrderExam.java
#Entity
#Table(name="order_exam")
public class OrderExam implements Serializable
{
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
#Column(name = "order_exam_id", unique = true, nullable = false)
private Integer id;
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name = "order_id", nullable = false)
private Order order;
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name = "exam_id", nullable = false)
private Exam exam;
#Column(name="exam_amount", nullable=true)
private Integer examAmount;
#Column(name="answer_sheet_amount", nullable=true)
private String answerSheetName;
#Column(name="students_per_csv", nullable=true)
private String studentsPerCSV;
#Column(name="pas", nullable=true)
private Boolean pearsonAnswerSheet;
//getters & setters
}
Exam.java
#Entity
#Table(name="exam")
public class Exam implements Serializable
{
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
#Column(name = "exam_id", unique = true, nullable = false)
private Integer id;
#NotEmpty
#Column(name="name", unique=true, nullable=false)
private String name;
#NotEmpty
#Column(name="code", unique=true, nullable=false)
private String code;
#OneToMany(fetch = FetchType.LAZY, mappedBy = "exam")
private Set<OrderExam> exams = new HashSet<OrderExam>(0);
//getters & setters
}
As you can see I am passing in a list of exams and documents which will populate a form with available options (can be seen in the image below (exams anyway)). The user needs to be able to select multiple rows, so that a single order has multiple exams and documents associated to it.
My order.jsp is a little much to post the entire thing here but here is the part I have which is displayed in the image above.
Order.jsp
<form:form method="POST" modelAttribute="order" class="form-horizontal form-label-left">
<c:forEach items="${exams}" var="exam">
<tr>
<th scope="row"><input type="checkbox" class="flat"></th>
<td><input id="middle-name" type="text" name="middle-name" readonly="readonly" value="${exam.name} - ${exam.code}" class="form-control col-md-7 col-xs-12"></td>
<td><input id="middle-name" type="text" name="middle-name" value="0" class="form-control col-md-3 col-xs-12"></td>
<td><input id="middle-name" type="text" name="middle-name" value="0" class="form-control col-md-3 col-xs-12"></td>
<td><input id="middle-name" type="text" name="middle-name" value="0" class="form-control col-md-3 col-xs-12"></td>
<c:choose>
<c:when test="${exam.name == 'Algebra 2 (Common Core)'}">
<th scope="row"><input type="checkbox" class="flat"></th>
</c:when>
<c:otherwise>
<th scope="row"></th>
</c:otherwise>
</c:choose>
</tr>
</c:forEach>
<!-- Other Stuff Goes Here -->
</form:form>
So in short, would someone be willing to show me how to set up the form in the way I described above? Thanks in advance.
Your question is a bit broad however you could try this as below. I have only covered exams. Principal for documents will be the same.
You will need a couple of new classes to capture the submitted form inputs:
Order Form to Capture Selections
public class OrderForm{
private List<ExamWrapper> allAvailableExams = new ArrayList<>();
private XOptionPrintWrapper selectedWrapper;
public OrderForm(){
}
//getters and setters
}
Exam Wrapper : Decorates an Exam with a 'selected' property
public class ExamWrapper{
private boolean selected;
private Exam exam;
public ExamWrapper(Exam exam){
this.exam = exams;
}
//getters and setters
}
Change Contoller to
public class OrderController{
//Exams model populated by the method below
//moved as we also need it populated on POST
#RequestMapping(value = { "/order" }, method = RequestMethod.GET)
public String order(ModelMap modelMap) {
//only needed on GET so put in model here
List<XOptionPrintWrapper> availableWrappers = //someList;
modelMap.put("availableWrappers", availableWrappers);
return "order";
}
//handles for submit
//model atribute is automatically populated by the framework
#RequestMapping(value = { "/order" }, method = RequestMethod.POST)
public String order(#ModelAttribute("orderForm") OrderForm orderForm) {
//process selected exams
return "nextView";
}
//on get populates the initial model for display
//on post create an instance which the form params will be bound to
#ModelAttribute("orderForm")
public OrderForm getOrderForm(){
OrderForm orderForm = new OrderForm();
List<Exam> exams = examService.findAllExams();
for(Exam exam : exams){
orderForm.getAllAvailableExams.add(new ExamWrapper(exam));
}
return orderForm;
}
}
In JSP use Sping support for binding to indexed properties:
<form:form method="POST" modelAttribute="orderForm" class="form-horizontal form-label-left">
<c:forEach items="${orderForm.allAvailableExams}" var="exam" varStatus="status">
<tr>
<th scope="row"><input name="allAvailableExams[${status.index}].selected"
type="checkbox" class="flat"></th>
</tr>
</c:forEach>
<form:select path="selectedWrapper">
<form:options items="${availableWrappers}"
itemValue="somePropertyOfXOptionPrintWrapper "
itemLabel="somePropertyOfXOptionPrintWrapper " />
</form:select>
</form>
I obviously haven't been able to try all of this but think it should all be okay.

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