Tapestry-将方法应用于tml循环中的值

Question

I found a similar post but what I´m asking is a bit different.

I have a table 'Room' in my database to store info about rooms. One of the elements in the table is price (float in MySQL).

I want to print all my rooms in tml with their info so first, I make a List of Room Objects. (with createQuery)

Now, in tml :

<t:loop source="rooms" value="room">
   ${room.price}

${room.price} prints one decimal, for example, 120.0.

Is it possible to pass that room.price to the Java page to remove the decimal a print it correctly?

Answer 1

Solved. I do not know if it´s the right way but I made:

tml

${getInt(room.precio)}

java

public int getDynamicFieldValue(double arg1) {
    return (int) arg1;
}

Another better option or better code?

Answer 2

In the tml use ${roomPrice}

Then in the Java do something like this:

public String getRoomPrice() {
    return String.format("%.0f", room.getPrecio());
}

The variations are endless, including truncation with an integer, but I think this gives the basic idea: do the conversion in the Java class rather than in the tml file.

Answer 3

Another way is to create a new Binding prefix which you can use in your template file without having to add a method in each page class where you want the formatting.

You can define as many formatters as you want, which you then can use wherever in your project you want like the following:

${format:price=room.price}

Example code:

https://wiki.apache.org/tapestry/Tapestry5HowToAddMessageFormatBindingPrefix