Vaadin is a Java framework for building modern web applications that look great, perform well and make you and your users happy.
this is what i roughly use for projects: https://github.com/christoph-frick/springboot-groovy-vaadin-starter
Hi all, i am new to vaddin.
i am trying to add my sql data into the grid but for some reason the data only show the LastName the ID and FirstName wont apper.
my code :
i am trying to add my sql data into the grid but for some reason the data only show the LastName the ID and FirstName wont apper.
my code :
public class MainView extends VerticalLayout {
private CustomerService service ;
public Customer customer = new Customer();
private Binder<Customer> binder = new Binder<>(Customer.class);
private Grid<Customer> grid = new Grid(Customer.class);
private Button save = new Button("Save", e -> {
try {
binder.writeBean(customer);
saveCustomer();
updateGrid();
binder.readBean(new Customer());
} catch (ValidationException ex) {
ex.printStackTrace();
}
});
public MainView(CustomerService service) {
this.service = service;
add(
new H1("הוסף לקוח"),
buildForm(),
grid
);
updateGrid(); // update the grid with the sql data
setSizeFull();
}
private void saveCustomer() throws ValidationException {
service.update(customer);
}
private Component buildForm() {
TextField firstName = new TextField("First Name");
TextField lastName = new TextField("Last Name");
TextField id = new TextField("ID");
TextField company= new TextField("Company");
TextField address = new TextField("Address");
TextField phone = new TextField("phone");
TextField created = new TextField("created");
TextField email = new TextField("Email");
Div errorsLayout = new Div();
binder.forField(firstName)
.bind(
Customer::getFirstName,Customer::setFirstName
);
binder.forField(lastName)
.bind(
Customer::getLastName,Customer::setLastName
);
Button reload = new Button("reload", e ->{
try{
binder.readBean(customer);
} catch (Exception ex) {
ex.printStackTrace();
}
});
// Configure UI components
save.setThemeName("primary");
// Wrap components in layouts
HorizontalLayout formLayout = new HorizontalLayout(grid,firstName,lastName,save,reload);
Div wrapperLayout = new Div(formLayout, errorsLayout);
formLayout.setDefaultVerticalComponentAlignment(Alignment.BASELINE);
wrapperLayout.setWidth("100%");
grid.setColumnReorderingAllowed(true);
return wrapperLayout;
}
private void updateGrid() {
List<Customer> customers = service.findAll();
grid.setItems(customers);
}
public List<Customer> findAll() {
return jdbcTemplate.query(
"SELECT ID, FirstName, LastName FROM customer",
(rs, rowNum) -> new Customer(rs.getLong("ID"),
rs.getString("FirstName"), rs.getString("LastName")));
}
the form stuff there is all unrelated? your grid does not show columns for id and firstName, but for lastName? or the columns are there, but they don't show content? If the later, are you sure, that the customers are loaded correctly (e.g. debugging findAll). If not, please also show us the Customer class
columns are there but thay show only data on the lastname,
customer class:
customer class:
package com.packagename.myapp.spring;
public class Customer {
private Long ID;
private String FirstName;
private String LastName;
private String Phone;
private String Email;
private String Company;
private String Address;
private String Created;
public Customer(Long id, String FirstName,String lastName,String company, String address, String phone, String email,String Created ) {
this.ID=id;
this.FirstName = FirstName;
this.LastName = lastName;
this.Phone = phone;
this.Email = email;
this.Company = company;
this.Address = address;
this.Created= Created;
}
public Customer(){}
public Customer(String lastName) {
this.LastName=lastName;
}
public Customer(Long id,String firstName,String lastName) {
this.LastName=lastName;
}
public Customer(String firstName,String lastName){
this.FirstName=firstName;
this.LastName=lastName;
}
public String getFirstName() {
return FirstName;
}
public void setFirstName(String firstName) {
FirstName = firstName;
}
public String getLastName() {
return LastName;
}
public void setLastName(String lastName) {
LastName = lastName;
}
public String getPhone() {
return Phone;
}
public void setPhone(String phone) {
Phone = phone;
}
public String getEmail() {
return Email;
}
public void setEmail(String email) {
Email = email;
}
public String getCompany() {
return Company;
}
public void setCompany(String company) {
Company = company;
}
public String getAddress() {
return Address;
}
public void setAddress(String address) {
Address = address;
}
public Long getID() {
return ID;
}
public void setID(Long ID) {
this.ID = ID;
}
public String getCreated() {
return Created;
}
public void setCreated(String created) {
Created = created;
}
}
and how can debugg only the find all command?
i run it in my sql and it showes all data
i run it in my sql and it showes all data
or add a toString() on your Customer and just print the data out at the end
oh there it is
check your three argument c'tor - it lacks all the assignments
(except lastname) - that's why it works
no clue for java (have not used it since the 1.2 days); for vaadin there book of vaadin which is full of examples and is a really good source for all vaadin. for spring check the web - i bet there are millions of tutorial etc out there. book of vaadin should also have a section about spring with vaadin
in the fetch runnable, i query the database, print my results to the console, and then stream the list holding the results
when i print to the console, the data looks good
when i print to the console, the data looks good
i logged the queries that its running
when i watch the console on my browser i see this sort of thing happening:
(i extrapolate that from atmosphere log messages, might be wrong here/)
sorry, i was trying to type out the behavior im seeing, but its hard to put in text
i am saying, that if have such a problem, if might help to isolate the problem. if you have just a grid, some push, and some data and the problem is there, its a bug and you can use that to report a bug with a minimal failing example. if that works, you have a problem in your actual code
Hello, can somebody help me with Vaadin 8 Button.addClickListener ? How to reassign listener? removeClickListener has deprecated in v8... For example, i have Button.addClickListener(event -> doSomethingLittle()); So i want to reassign it to doSomethingBig() only when something other happens, but i have not found replaceClickListener or something like this to reassign it
... why removeClickListener deprecated...
... why removeClickListener deprecated...
IIRC it was replaced by the registration handle that allows you to unregister whatever listener when needed and it was deemed much better API than having removeXYZListener everywhere.
Even though things are deprecated in 8, those are not removed from it. But those (and other things) you cannot presume to be there in 10+
Hello everyone. We try to multi select rows in a grid. We found the default multi-selection with the checkboxes/space, but want select one row by clicking on it and multi select rows by holding the ctrl/shift button + clicking. Is this possible in a way? (https://vaadin.com/docs/v8/framework/components/components-grid.html#components.grid.selection.multi)
