I want to send an object to the view for presentation and send it back to controller using springboot and Thymeleaf, however, I encounter a weird problem with Thymeleaf's th:value.
This is my controller:
#GetMapping("/food/buy/{fid}")
public String buyFood(HttpServletRequest request, #PathVariable("fid") Long fid, Model model) {
Food food = consumerService.getFood(fid);
System.out.println("foodid = " + food.getId());
model.addAttribute("food", food);
model.addAttribute("order", new OrderVO());
return "user/direct/f_order";
}
and my view:
<form th:action="#{/user/buy/direct/food}" method="post" th:object="${order}">
<table border="1px">
<tr th:hidden="true">
<td><input type="text" th:value="${food.id}" th:field="*{fid}" th:readonly="true"></td>
</tr>
</table>
</form>
and the VO class:
public class OrderVO {
private Long fid, address;
private Integer amount;
#DateTimeFormat(pattern = "HH:mm")
private Date deliverTime;
}
the problem is, the input field's value is null, but I'm sure that the food's id is not null (I print it in the controller)
I remove the th:field block, and the food.id can be properly presented. If I add the th:field block back, the problem reoccur.
So there may be something wrong with th:field, but I can't figure out. Can somebody point out my mistake?
===========================UPDATE============================
Some friends kindly points out that th:field may overwrite th:value, but I also use them in other views and it works fine:
<tr>
<td>UserName</td>
<td><input type="text" th:value="*{userName}" th:field="*{userName}"></td>
</tr>
The problem is getting incresing weird I think :(
Replace *{fid} with fid
My team had this same issue and it worked
In tabualr form try using th:name instead of th:field to overcome th binding issue
th:name="|order.fid|"
and stick to java naming convention.
Supposing you have to collect a comment to a page. You must transmit to the controller, besides the comment, the name of the page. Ofcourse, the user don't have to re-enter the name of this page. This information must be passed to controller, but th:field only map the values entered by the user, not the values generated by default.
But you can transmit the name of this page to controller as parameter in URL.
In html, you have something like that:
<form th:action="#{/saveComment(lastPage=${lastPage})}" th:object="${comments}" method="post" enctype="multipart/form-data">
<div class="row">
.................................................................................
<h2>Enter your comment</h2>
<textarea th:field="${comments.comment}" rows="10" cols="100" name="comment" id="comment"></textarea>
<label for="comment">Your comment here</label><br />
<input type="submit" name ="submit" value="Submit" />
</div>
</form>
In controller, you put stuff like this:
#PostMapping("/saveComment")
public String saveComment(Comments comments, String lastPage) {
comments.setPage_commented(lastPage);
commentsRepository.save(comments);
return "redirect:/";
}
It works fine to me.
Related
I am programming in Spring and using Thymeleaf as my view, and am trying to create a form where users can update their profile. I have a profile page which lists the user's information (first name, last name, address, etc), and there is a link which says "edit profile". When that link is clicked it takes them to a form where they can edit their profile. The form consists of text fields that they can input, just like your standard registration form.
Everything works fine, but my question is, when that link is clicked, how do I add the user's information to the input fields so that it is already present, and that they only modify what they want to change instead of having to re-enter all the fields.
This should behave just like a standard "edit profile" page.
Here is a segment of my edit_profile.html page:
First Name:
Here is the view controller method that returns edit_profile.html page:
#RequestMapping(value = "/edit", method = RequestMethod.GET)
public String getEditProfilePage(Model model) {
model.addAttribute("currentUser", currentUser);
System.out.println("current user firstname: " + currentUser.getFirstname());
model.addAttribute("user", new User());
return "edit_profile";
}
currentUser.getFirstname() prints out the expected value, but I'm getting blank input values in the form.
Thanks.
Solved the problem by removing th:field altogether and instead using th:value to store the default value, and html name and id for the model's field. So name and id is acting like th:field.
I'm slightly confused, you're adding currentUser and a new'd user object to the model map.
But, if currentUser is the target object, you'd just do:
<input type="text" name="firstname" value="James" th:value="${currentUser.firstname}" />
From the documentation:
http://www.thymeleaf.org/doc/tutorials/2.1/usingthymeleaf.html
I did not have a form with input elements but only a button that should call a specific Spring Controller method and submit an ID of an animal in a list (so I had a list of anmials already showing on my page). I struggled some time to figure out how to submit this id in the form. Here is my solution:
So I started having a form with just one input field (that I would change to a hidden field in the end). In this case of course the id would be empty after submitting the form.
<form action="#" th:action="#{/greeting}" th:object="${animal}" method="post">
<p>Id: <input type="text" th:field="*{id}" /></p>
<p><input type="submit" value="Submit" /> </p>
</form>
The following did not throw an error but neither did it submit the animalIAlreadyShownOnPage's ID.
<form action="#" th:action="#{/greeting}" th:object="${animal}" method="post">
<p>Id: <input type="text" th:value="${animalIAlreadyShownOnPage.id}" /></p>
<p><input type="submit" value="Submit" /> </p>
</form>
In another post user's recommended the "th:attr" attribute, but it didn't work either.
This finally worked - I simply added the name element ("id" is a String attribute in the Animal POJO).
<form action="#" th:action="#{/greeting}" th:object="${animal}" method="post">
<p>Id: <input type="text" th:value="${animalIAlreadyShownOnPage.id}" name="id" /></p>
<p><input type="submit" value="Submit" /> </p>
</form>
I am new to Thymeleaf, and I have an issue with dynamically creating URLs using forms.
I have a simple spring boot app that stores objects in a database, and I can query the database using simple urls. For instance, the url /distance/0.3 would return objects whose distance attribute is lower than or equal to 0.3. These urls work perfectly when I edit them in the browser.
I would like users to be able to set these search values themselves. I tried to create a simple form to create the above url with user inputs, but I am getting the following error:
Neither BindingResult nor plain target object for bean name 'dist' available as request attribute
I have tried with this in the html document:
<form th:action="#{/distance/{pathParam}(pathParam=${dist}}">`
<p>Distance: <input type="text" th:field="*{dist}" /></p>
<p><input type="submit" value="Submit" /> <input type="reset" value="Reset" /></p>
</form>
and trying various answers from this discussion, but with no luck.
I have also tried to use the controller as suggested here, with this in the controller:
#GetMapping("/distance/search/")
public String userSetDistance(#RequestParam("dist") String dist) {
return "redirect:/distance/" + dist;
}
and this in the html file:
<form th:action="#{/distance/search/}">
<p>Distance: <input type="text" th:field="*{dist}" /></p>
<p><input type="submit" value="Submit" /> <input type="reset" value="Reset" /></p>
</form>
But this did not work either.
Could you please help me with this? The idea is simple but I cannot get something that works... thank you!
UPDATE
Based on the below answer from MohamedSanaulla, I decided to use the controller to do this, created a "forms" object with the required fields and edited my code as follows:
<form action="#" th:action="#{/distance/search}" th:object="${param}" method="post">`
<p>Distance: <input type="text" th:field="*{dist}"/></p>
<p><input type="submit" value="Submit" /> <input type="reset" value="Reset" /></p>
</form>
#PostMapping("/distance/search")
public String userGetClose(#ModelAttribute ("param") Forms form) {
String distance = String.valueOf(form.getDist());
return "redirect:/distance/" + distance;
}
Ideally I wanted to create and call the url directly from the html page, to avoid going back to the controller just to create the url, but this works fine.
You have to either use ModelMap or Model in your controller and then use addAttribute to set the dist:
public String controllerMethod(#RequestParam("dist") String dist,
Model model){
model.addAttribute("dist", dist);
return "viewName";
}
Or Thymeleaf provides context object to get query params like ${param.dist} directly in your HTML
Update:
Just saw that there is a redirect: in the controller. So the dist is no longer available in the request param and hence ${param.dist} will not work. The easier solution is to use ModelMap and put the dist as part of the view model.
Can somebody help me to get value from certain input using spring controller.
I have 2 input data, and I just need a value from one of these inputs:
<input type="text" name="data01" />
<input type="text" name="data02" />
I just want to retrieve a value from "data01".
I just have used
(HttpServletRequest) request.getParameter("data01")
Or
#RequestParam(value="data01") Integer data01
but the value is null.
Can somebody help me
EDIT:
jsp:
<table>
<tr>
<input type="text" name="data01" />
<input type="text" name="data02" />
</tr>
</table>
controller:
#RequestMapping(value = "/user", method=RequestMethod.GET)
public String showAllData(ModelMap model, HttpServletRequest request) {
String retrievedData = request.getParameter("data01");
System.out.println("data= " + retrievedData);
model.addAttribute("data", new data());
return "data";
}
The retrievedData value is null.
You should be able to get the parameter using this method
<form action="/user" method="get">
<table>
<tr>
<input type="text" name="data01" />
<input type="text" name="data02" />
<input type="submit" value="submit"/>
</tr>
</table>
</form>
and in the controller
#RequestMapping(value = "/user", method=RequestMethod.GET)
public String showAllData(String data01, ModelMap model) {
// your logic here
}
and from the code you have posted. You are casting the parameter to HttpServletRequest
request.getParameter("data01") //returns String as default.
Integer.parseInt(request.getParameter("data01");
From your comment at #user1516735 answer, you cannot use it outside of the form tag. Unless you include it in the parameter from ajax or append the value of "name01" in the url as /user?name01=value
You will get the value of data01 by using the below code:
request.getParameter("data01");
Here request is of type HttpServletRequest. Make sure your input control is inside form tag.
I'm having One entity as Vendor and Another as Address and the relationship between both of them is One To Many form Vendor to Address.
Note : I am using JPA
My Vendor Entity
public class Vendor {
private Integer id;
private String name;
private List<Address> address;
// getter and setters
}
Address class:
public class Address {
private Integer id;
private String addressline1;
private String addressline2;
//getter and setters
}
Now I am using Thymeleaf , I have a scenario where I need to add the address dynamically to a form for the particular vendor.
How do I do Object binding for the Address object in Vendor using Thymeleaf in spring mvc?
Comment if i didn't understand your question correct, it's a bit unclear to me...
In order to access the address(s) of a vendor, you provide a vendor within your controller (something like model.addAttribute("vendor", currentVendor);) and call vendor.address in your html file. Please note that this will give you a list so you need to iterate to show all address:
<tr th:each="address : ${vendor.address}">
<td th:text="${address.id}">1</td>
<td th:text="${address.addressline1}"></td>
<td th:text="${address.addressline2}"></td>
</tr>
Uhhh, that's tricky because binding to form doesn't work in a dynamic way. That means you can't do something like #Viergelenker suggests AND bind each address-object to his own form.
You can add a single address object to the model, e.g.
model.addAttribute("address", addressObject); // Snippet for Model-object
modelAndView.addObject("address", addressObject); // Snippet for ModelAndView object
and then define a form in yout template like:
<form .... method=".." th:object="${address}">
<input type="hidden" th:field="*{id}" >
<input type="text" th:field="*{addressline1}" >
<input type="text" th:field="*{addressline2}" >
</form>
Unfortunately it is not possible to add a array or list to the model and bind each object in that collection to his own form:
/* The following code doesn't work */
<th:block th:each="address : ${addresses}">
<form .... method=".." th:object="${address}">
<input type="text" th:field="*{addressline1}" >
...
</form>
</th:block>
or
/* The following code doesn't work */
<th:block th:each="address, stat : ${addresses}">
<form .... method=".." th:object="${addresses[__stat.index__]}">
<input type="text" th:field="*{addressline1}" >
...
</form>
</th:block>
What you can do is not to use form binding and just send some name-value pairs from forms without the binding (just use the name and the th:value attributes and not the th:field attribute in your forms) to the controller, get them there from the HttpServletRequest object and create/update/delete address-objects ... or bind the whole Vendor object to a form (note the use of stat.index):
<form th:object="${vendor}">
<input type="hidden" th:field="*{id}">
<input type="hidden" th:field="*{name}"> // feel free to make that field editable
<th:block th:each="addr, stat : *{address}">
<input type="hidden" th:field="*{address[__${stat.index}__].id}">
<input type="text" th:field="*{address[__${stat.index}__].addressline1}">
<input type="text" th:field="*{address[__${stat.index}__].addressline2}">
</th:block>
</form>
I have some problems with taking a parameters from jsp page, when method POST occurs.
My JSP page looks like this:
....
<table border="1">
<tr>
<th>name</th>
<th>check</th>
</tr>
<c:forEach items="${things}" var="pair">
<tr>
<td>${things.name}</td>
<td><INPUT TYPE="CHECKBOX" NAME=items VALUE=${things.id} ></td>
</tr>
</c:forEach>
</table>
<form method="post">
<input type="submit" value="Check all" />
</form>
So, I want to take all checked "things" in table. In controller class I something like this (written in Spring):
....
#RequestMapping(method = RequestMethod.POST)
public String sumbitForm(#RequestParam("items") String[] items){
if(items!= null){
for(String item: items){
....
}
}
return "redirect:myPage";
}
But my app don't want to work with such RequesParam. It doesn't put the values of items parameter to it. (this method I took here http://www.go4expert.com/forums/showthread.php?t=4542)
Also I tried using #ModelAttribute instead of #RequesParam. When I'm using it, my app don't give a errors, but it also couldn't correctly put the "items" to this parameter.
Any ideas?
P.S. May be you know more better method of taking list of parameters from JSP page for using their values (like taking checked items)?
Your table is outside of the <form></form> so when submitting, it doesnt send anything.