CODEWITHSUNDEEP
scalaplayframework-2.0
Simon
Simon

Reputation: 80769

What is the proper way to format a double in a Play 2 template

Here is my abbreviated code from a Play 2 template...

@(variable: com.mypackage.Variable) 

<div class='statsbody'>
    <div class='statsform'>
        <label>Average:</label>
        <span>@"%.2f".format(variable.getAverage())</span>
    </div>
</div>

I get a compile error:

`identifier' expected but `"' found

and I got the idea above from this question, which says how to do it at the scala command prompt, which is great, but doesn't work in a template.

The getAverage() method belongs to an external Java package I am using and it returns a raw double. This all works fine and without the formatting I can happily display the right numbers.

I have tried a variety of alternatives including using the static Java String formatting method...

@String.format("%.2f", variable.getAverage())

...which gave

Overloaded method value [format] cannot be applied to (String, Double)

So my question is, what is the proper way to format a double in a Play 2 template? I know I could probably use Javascript, but I'd like to know if there's a Play/Scala solution to this.

Upvotes: 2

Views: 4326

Answers (3)

vladaman
vladaman

Reputation: 3908

Only solution I found to properly change user's language and apply formatting to numbers is:

In Controller:

public Result lang(String lang) {
    changeLang(lang);
    Logger.debug("Language change request: " + lang);
    return redirect(routes.Dashboard.dashboard());
}

In template we use following:

 <td>@("%.2f".formatLocal(lang().toLocale(), variable.getAverage()))</td>

Upvotes: 0

Infinity
Infinity

Reputation: 3441

Use brackets: 

@("%.2f".format(variable.getAverage()))

or:

@{
  "%.2f".format(variable.getAverage())
  //more scala code
}

which allows you to write multi-statement scala code in template.

Upvotes: 12

Simon
Simon

Reputation: 80769

I have found an answer, but it doesn't directly address the question at hand. I can get the String.format code to work if I box the double into a java.lang.Double like this...

@String.format("%.2f", new java.lang.Double(variable.getAverage()))

This solves my problem for now, but doesn't really answer the question. There must be a Scala/Play solution... mustn't there?

Upvotes: 0

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