Unable to send a String to the controller via ajax

Exploring web development using play framework and ajax. I'm looking to pass a string from a form to a controller using ajax, but unsure of how to go about it. Can anyone assist me with this? Here's my code snippet: html:

<form onsubmit="return newSearch();" id="formId">
    <input type="search" placeholder="Search for more" id="searchBar_chat">
</form>
<script type="text/javascript" >
function newSearch()
{
    var s = document.getElementById("chatDialgue");
    var searchValue = document.getElementById("searchBar_chat").value;
    s.innerHTML = s.innerHTML + '<li>'+ searchValue +'</li>';
    document.getElementById("searchBar_chat").value ="";
    $.ajax({
        url: "DataMatch/searchContentMatch",  
        type:"GET",
        cache: false,
        dataType:"text",
        data:"searchValue",
        success: function (responseData) {  
        s.innerHTML = s.innerHTML + '<li>'+responseData+'</li>';  
        }  
        });
    return false;
}
</script>

controller:

public class DataMatch extends Controller{

  public String searchContentMatch (String search) {
    // Search match
    return "HI"+search;
  }

}

Answer №1

One important thing to note is that when using the data parameter in $.ajax(), you must construct a query string by combining the key ("search") with its corresponding value (searchValue).

Additionally, there is no need for the return false statement within the script or the use of the return keyword on the onsubmit form attribute.

Lastly, considering your utilization of jQuery, it would be beneficial to leverage its selection capabilities by replacing instances of document.getElementById with $.

<form onsubmit="newSearch();" id="formId">
    <input type="search" placeholder="Search for more" id="searchBar_chat">
</form>
<script type="text/javascript" >
function newSearch(){
    var searchValue = $("#searchBar_chat").val();
    $("#chatDialgue").append('<li>'+ searchValue +'</li>');
    $("#searchBar_chat").val("");
    $.ajax({
        url: "DataMatch/searchContentMatch",  
        type:"GET",
        cache: false,
        dataType: "text",
        data: "search=" + searchValue,
        success: function (responseData) {  
            $("#chatDialgue").append('<li>' + responseData + '</li>');
        }  
    });
}
</script>

Answer №2

Use a Query Parameter to pass it along, considering it's only one string.

let searchTerm = "searchValue";
 $.ajax({
        url: "DataMatch/searchContentMatch?search="+searchTerm,  
        type:"GET",
        cache: false,
        dataType:"text",
        success: function (responseData) {  
        s.innerHTML = s.innerHTML + '<li>'+responseData+'</li>';  
        }  
        });

Answer №3

It's recommended to utilize the Javascript router instead of hardcoding the endpoint in your Javascript code. By doing so, you can easily modify the endpoint name later if necessary. Additionally, when passing a query string parameter, it's best to include it directly in the URL. Below is an example demonstrating how to use the reverse route:

@helper.javascriptRouter("jsRoutes")(
    routes.javascript.DataMatch.searchContentMatch
)

//Embed HTML content here

var endpoint = jsRoutes.controllers.DataMatch.searchContentMatch(searchValue).url;
$.ajax({
  url: endpoint,  
  type:"GET",
  cache: false,
  success: function (responseData) {  
  s.innerHTML = s.innerHTML + '<li>'+responseData+'</li>';  
  }  
});

Answer №4

Adding on to the previous response, it's important to remember to include the parameter in the routes configuration file:

GET    /api/search/:search             controllers.DataMatch.searchContentMatch(searchTerm: String)

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