Pass Play Framework parameter to javascript

Question

I'm trying to pass a parameter coming from my controller to a javascript script so I can edit the data. But the javascript isn’t accepting my parameter.

Here is the code:

@for(status <- lista){
<tr>
<td>@status.getDescricao()</td>
<td><a href="javascript:;" onclick="enviar('formAltStatus/@status.getCodStatus()')"><img src="@routes.Assets.at("img/edit.png")" alt="" title="Editar"/></a>
                    <a href="@routes.StatusController.removerStatus(status.getCodStatus())"><img src="@routes.Assets.at("img/erase.png")" alt="" title="Remover"/></a>
</td>
</tr>
            }

The @status.getCodStatus() is my ID.

The route:

GET     /formAltStatus/:id              controllers.StatusController.formAltStatus(id:Long)

The javascript:

function enviar(a){
    $.ajax({
        url: "/"+a,
        type: "GET",
        contentType: "application/x-www-form-urlencoded; charset=UTF-8",
        dataType: "html",
        async:true,
        success: function(html){        
            $("#nova").html("");
            $("#nova").html(html);
            $("#logo").show();
        }
    });
}

Is there another way to do this?

Valy Dia · Accepted Answer · 2019-02-22 20:16:08Z

HTML5 data attributes are designed for this situation where you have to pass server-side data to client-side functions. I think the best-practice solution is to add a data attribute to your anchor tag, and then retrieve the attribute value in Javascript.

<a ... data-status="@status.getCodStatus" data-param2="@param2">

This code then illustrates what the Javascript might look like. I don’t have much Javascript expertise so I’ve written a solution that uses JQuery. You will have to modify my suggestion if you're not using JQuery and are just using pure Javascript.

HTML:

<!-- Simple illustration of how to pass server-side data to a JS function -->
<a href="no-javascript.html" class="edit-link" data-status="@status.getCodStatus" data-param2="@param2">
    Hyperlink body goes here
</a>

Javascript:

$('.edit-link').click(function(e) {
   e.preventDefault();
   statusCode = $(this).data('status', 'param2');
   alert(statusCode);
 });

Live example on jsFiddle.

Viktor Nikitenko · Accepted Answer · 2018-06-20 18:24:52Z

0

Similiar situation. Wanted to set the template parameter as an angular scope variable. I passed the Json version of my model object and set it using ng-init.

Server Side

return ok(views.html.database.admin.chargeGroups.render(Json.toJson(commodity)));

Front End

@(commodity: com.fasterxml.jackson.databind.JsonNode)
@main("Charge Groups") {
<div ng-controller="ChargeGroupsController" ng-init="commodity = @commodity">

answered Jun 20, 2018 at 18:24

Viktor Nikitenko

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Pass Play Framework parameter to javascript

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