there are news titles.and user click on these titles.browser goes to the page which shoes the news of this title.i want to get data from database where id equals to elements id which is clicked.element gets id from database so i don't know id in advance.
<ui:repeat value="#{controller.sql.yenilikler}" var="list">
<a href="xeberShekil.xhtml" id="#{list.id}}">
#{list.basliq}
</a>
<br/>
</ui:repeat>
so i should
1.get the id of an element which is clicked
2.send this id into a variable in java class
3.send query which is get a data from database where id= the id of element
int id;
ResultSet rs= statement.executeQuery("select * from tableName where id="+id);
if an other algorithm propose please share.Tnx a lot
Pass values to managed bean using f:param, f:setPropertyActionListner or pass value directly using commandbutton's action="#{bean.someAction(value)}"
See JSF-2 Action Parameter for code snippets.
Edit to Code
Data table
<h:dataTable value="#{someManagedBean.categories}" var="cat">
<h:column>
<h:commandButton action="#{someManagedBean.edit(cat.id)}"
</h:column>
</h:dataTable>
Managed Bean
public void edit(id) {
doYourDBThing(id);
}
You can also use f:param and f:setPropertyActionListner. See the above link.
Related
I have some experience in XQuery to update the XML data. I have tried to use the same logic for the HTML data in SQL Server.
But not working as expected.
For example I have a XML column Value (actually HTML data) as below.
Declare #template xml = '<div>
<div id="divHeader">Congratulation<div id="Salutation">ravi</div></div><br/>
<div>From now you are a part of the Company<div id="cmpnyUserDetails"></div></div><br/>
<div id="clickSection">Please Click Here to Access Your New Features</div>
</div>'
and I would like change the html value od the div with ID "Salutation" to "New Value" and Append the href value to a valid link using the XQuery.
SET #template.modify('replace value of (//div[id=("Salutation")]/text())[1] with "New Value"')
SELECT #template AS data
But it's not working.
Can someone please suggest to me how to make it happen?
Thanks a ton in advance,
Ravi.
You were close. Notice the #id vs. your id
Example
SET #template.modify('replace value of (//div[#id=("Salutation")]/text())[1] with "New Value"')
select #template as data
Returns
<div>
<div id="divHeader">Congratulation<div id="Salutation">New Value</div></div>
<br />
<div>From now you are a part of the Company<div id="cmpnyUserDetails" /></div>
<br />
<div id="clickSection">Please Click Here to Access Your New Features</div>
</div>
I have a Thymeleaf template in a simple Spring Boot application. The template contains a list in a table as follows:
<p>There are <span th:text="${#lists.size(persons)}"></span> people:</p>
<table th:if="${not #lists.isEmpty(persons)}" border="1">
<tr>
<th>ID</th>
<th>Name</th>
<th>Address</th>
<th>Telephone</th>
<th>Email</th>
<th>Actions</th>
</tr>
<tr th:each="person : ${persons}">
<td th:text="${person.personId}"></td>
<td th:text="${person.name}"></td>
<td th:text="${person.address}"></td>
<td th:text="${person.telephone}"></td>
<td th:text="${person.email}"></td>
<td>
Edit |
Delete
</td>
</tr>
</table>
I want to enable edit and delete functionality as per the last cell in the table. But at the moment both requests are for HTTP GET. That is fine for edit where a person's details are fetched from the server for editing, but delete should trigger a POST request because of the data changes on the server.
Does anyone know if Thymeleaf allow a POST request per row of a table? Or do I have to write a simple HTML form per row?
The GET form is currently:
<td>
Edit
<!--a href="#" data-th-href="#{/delete(personId=${person.personId})}">Delete</a></td-->
<form method="get" th:action="#{/edit(personId=${person.personId})}">
<button type="submit" name="submit" value="value">Edit</button>
</form>
</td>
Where I have a link and a form for testing.
The controller method to be called is:
// Gets a Person.
#RequestMapping(value="/edit", method=RequestMethod.GET)
public String getEditPerson(#RequestParam("personId") String personId, Model model) {
logger.info(PersonController.class.getName() + ".getEditPerson() method called.");
Person person = personDAO.get(Integer.parseInt(personId));
model.addAttribute("person", person);
// Set view.
return "/edit";
}
The error when the button version of GET is called is:
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Sun Jul 24 00:26:16 BST 2016
There was an unexpected error (type=Bad Request, status=400).
Required String parameter 'personId' is not present`
I am using GET to trigger editing because no data is sent to the server here other than the personId. No database action is taken so it should be a GET.
you are using Links and I don't think that is possible, you would need to use a form where you can specify the method POST to be used.
In the example below im using a <button> instead of a <a> element, but it will work, the only thing you need to do is to style your button with CSS to look like your links
<form method="POST" th:action="#{/edit(personId=${person.personId})}">
<button type="submit" name="submit" value="value" class="link-button">This is a link that sends a POST request</button>
</form>
now in your code should look like this
<tr th:each="person : ${persons}">
<td th:text="${person.personId}"></td>
<td th:text="${person.name}"></td>
<td th:text="${person.address}"></td>
<td th:text="${person.telephone}"></td>
<td th:text="${person.email}"></td>
<td>
<form method="POST" th:action="#{/edit(personId=${person.personId})}">
<button type="submit" name="submit" value="value" class="link-button">EDIT</button>
</form> |
<form method="POST" th:action="#{/delete(personId=${person.personId})}">
<button type="submit" name="submit" value="value" class="link-button">DELETE</button>
</form>
</td>
</tr>
EDIT
As you just shared you Java code, in the controller you are expecting the personId not as a PathVariable, but as a RequestParam,
in that case your form should have that value...
edit your form and add the person id as follows.
<form method="POST" th:action="#{/edit}">
<input type="hidden" name="personid" id="personId" th:value="${person.personId}" />
<button type="submit" name="submit" value="value" class="link-button">This is a link that sends a POST request</button>
</form>
Notice also I changed the action of the form to be just /edit, as its what your controller looks like
Does anyone know if Thymeleaf allow a POST request per row of a table? Or do I have to write a simple HTML form per row?
HTML doesn't support POST request with links and you have to use forms (as Rayweb_on explained). But Thymeleaf allows you to define custom tags which helps a lot :
<a th:href="#{/edit(personId=${person.personId})}" custom:linkMethod="post">Edit</a>
... which would generate following HTML (assuming jQuery is available) :
Edit
Custom tag definition (without error checking to keep it simple) :
/**
* Custom attribute processor that allows to specify which method (get or post) is used on a standard link.
*/
public class LinkMethodAttrProcessor extends AbstractAttributeTagProcessor {
private static final String ATTR_NAME = "linkMethod";
private static final int PRECEDENCE = 10000;
public LinkMethodAttrProcessor(final String dialectPrefix) {
super(
TemplateMode.HTML, // This processor will apply only to HTML mode
dialectPrefix, // Prefix to be applied to name for matching
null, // No tag name: match any tag name
false, // No prefix to be applied to tag name
ATTR_NAME, // Name of the attribute that will be matched
true, // Apply dialect prefix to attribute name
PRECEDENCE, // Precedence (inside dialect's own precedence)
true); // Remove the matched attribute afterwards
}
#Override
protected void doProcess(final ITemplateContext context, final IProcessableElementTag tag,
final AttributeName attributeName, final String attributeValue,
final IElementTagStructureHandler structureHandler) {
// get the method name (tag parameter)
final IEngineConfiguration configuration = context.getConfiguration();
final IStandardExpressionParser parser = StandardExpressions.getExpressionParser(configuration);
final IStandardExpression expression = parser.parseExpression(context, attributeValue);
final String method = (String) expression.execute(context);
// add custom javascript to change link method
final String link = tag.getAttribute("href").getValue();
final String action = "$('<form action="" + link + "" method="" + method + ""></form>').appendTo('body').submit(); return false;";
structureHandler.setAttribute("onclick", action);
structureHandler.setAttribute("href", "#");
}
}
See the Thymelead documentation for example of how this custom attribute needs to be registered.
So I have a form with a submit button and a hidden field. The hidden field holds the value which will be used to query. When the user presses the submit button, the value is supposed to pass to the controller and the controller is supposed to query and then render a new page with the query result. Here is the code,
#{list items:courses, as:'course'}
<li>
${course.CourseCode}
#{form #Courses.detail()}
<div>
<input type="text" name="Code" value = ${course.CourseCode} />
</div>
<div>
<input type="submit" value="Course Detail" />
</div>
#{/form}
</li>
<br />
#{/list}
I was having problems with "Course" not found so I changed the hidden field to text. This is where the weird thing starts. I see only half the value of ${course.CourseCode}. For example, if course code = ICCS 101, I see "ICCS 101" in the list but in the text field I see only ICCS. I have no idea why this is happening.
Here is my controller
public static void detail(String Code){
System.out.println(Code);
List<Course> courses = Course.find("byCourseCode", Code).fetch();
int index = courses.size()-1;
if(index>=0){
Course course = courses.get(index) ;
render(course);
}
else{
notfound();
}
}
Edit::It seems like it truncates everything after the first white space.
In your view the value property of your input tag should be between quotes "..." otherwise everything after the first space will get truncated
<input type="text" name="Code" value="${course.CourseCode}" />
I have followed this wiki and have successfully built a custom query.
It works fine. I have used a join between tables.
My question is how do I display it on a jsp using liferay search container since className in search container requires one model class.
EDIT:
What I have tried till now is this:
<%
getAttendanceData attName = new getAttendanceData();
List<Object[]> displayAttListName = AttendanceLocalServiceUtil.findAttendance();
ArrayList name = new ArrayList();
ArrayList title = new ArrayList();
ArrayList status = new ArrayList();
ArrayList remarks = new ArrayList();
for(Object[] att:displayAttListName) {
name.add(att[0]);
title.add(att[1]);
status.add(att[2]);
remarks.add(att[3]);
}
%>
<liferay-ui:search-container delta="20" emptyResultsMessage="No Results Found">
<liferay-ui:search-container-results
total="<%= displayAttListName.size() %>"
results="<%= ListUtil.subList(displayAttListName , searchContainer.getStart(), searchContainer.getEnd()) %>"
/>
<liferay-ui:search-container-row modelVar="search"
className="java.lang.Object">
<%
for(Object displayName:name) {
%>
<liferay-ui:search-container-column-text name='studName' value = '<%=String.valueOf(displayName)%>' href="">
</liferay-ui:search-container-column-text>
<%
}
%>
</liferay-ui:search-container-row>
<liferay-ui:search-iterator/>
</liferay-ui:search-container>
What I have done above displays each of the 10 names 10 times in a column.
I want the names to appear on each new row. How shoould I modify the above code?
EDIT 2
Considering the name array defines earlier I did the following:
<liferay-ui:search-container-column-text name="employee name" href = "">
<%=name.getClass().getDeclaredFields().toString() %>
</liferay-ui:search-container-column-text>
With the above, I am getting the result something like: [Ljava.lang.reflect.Field;#195f1af on each row.
I see that the name, title, status and remarks field are all String (as per your comment) so in the for loop you should cast the Object as a String and you don't need the four ArrayList for this.
Here is how the row tag would look like:
<liferay-ui:search-container-row className="java.lang.Object" modelVar="search">
<%--
Since an "Object[]" is nothing but an "Object", we first cast the "search"
instance to an "Object[]" and then to a "String"
--%>
<liferay-ui:search-container-column-text name='name' value='<%= (String) ((Object[])search)[0] %>' />
<liferay-ui:search-container-column-text name='title' value='<%= (String) ((Object[])search)[1] %>' />
<liferay-ui:search-container-column-text name='status' value='<%= (String) ((Object[])search)[2] %>' />
<liferay-ui:search-container-column-text name='remarks' value='<%= (String) ((Object[])search)[3] %>' />
</liferay-ui:search-container-row>
There you go, this should work.
A more cleaner way I think would be to have a POJO defined that would store these values and then the POJO's list can be returned. I have not tried the second approach though.
Another standard approach is to include extra fields in any one of the entity's *Impl and then returning the list of that entity, in your case I would assume you have Student and Attendance entities, so you can put the fields status & remarks in StudentImpl and then return a List<Student> or put fname in AttendanceImpl and return List<Attendance> from the finder method. (updated after this comment)
How to write dynamic struts <html:option>, I'm doing as below
<logic:iterate id="data" name="sendEmailForm" property="eventList">
<html:option value="<bean:write name="data" property="eventId"/>"/>
<bean:write name="data" property="title"/>
</html:option>
</logic:iterate>
but getting following error:
JSPG0069E: Unmatched end tag found while parsing jsp. Expecting
logic:iterate found html:option at [87,130]
is there another way to do so?
Thanks in advance.
<html:option property="title">
<html:optionsCollection name="sendEmailForm" label="title" value="eventId" />
<html:option>
html:option tag
property="?" whatever you want to set like if attribute is title and corresponding method (getTitle(), setTitle(String title) ) then property= "title"
html:optionsCollection tag
name = "?" whatever you have put in your request/session attribute
like (request Or session).setAttribute("sendEmailForm", ListArr);
then name="sendEamilForm"
listArr is array of object of bean ( may be formbean or simple pojofile/bean).
label ="?" what ever you want to show like if you have attribute 'title' and
corresponding setter(setTitle(String title)) and getter(getTitle()) method then
label="title"
value ="?" what ever you want to put as value in option. you call your getter method
corresponding attribute like if you have attribute eventId and method (
setEventId(String eventId) , getEventId() ) then value="eventId"
ok finally i found below for solution
<html:optionsCollection name="sendEmailForm" property="eventList" label="title" value="eventId" />