Monday, 24 September 2018

JQUERY AUTOCOMPLETE FOR TEXT FIELD ITEM IN ORACLE APEX


Process of enabling users to quickly find and select from a  list of values as they type, searching and filtering without Native text with auto-complete in APEX.

This process works fine with Apex 4 and 5 versions but not 18.

Steps in APEX :


ü  Step 1 : Create a text field item P67_ENAME.
ü  Step 2 : Copy Below code in to the HTML Header of the page.
<!doctype html>
<html lang="en">
<head>
            <meta charset="utf-8">
            <title>autocomplete demo</title>
            <link rel="stylesheet"       href="//code.jquery.com/ui/1.12.1/themes/smoothness/jquery-ui.css    ">
      <script src="//code.jquery.com/jquery-1.12.4.js"></script>
      <script src="//code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
</head>

ü  Step 3 : a) Create an Application Process GET_NAMES.
          b) Change the Process Point to On Demand - Run this Process when                                                   requested by AJAX.
c) Copy the Below PL/SQL Code as source.
    
Note : This Process returns values matching the literals typed in the text field item in the JSON Format. 

DECLARE
   CURSOR c_names(pc_term IN VARCHAR2)
   IS
      SELECT      '{"label":"'
               || ename
               || '","id":"'
               || empno
               || '"}' ename
          FROM emp
         WHERE UPPER (TO_CHAR (ename)) LIKE
             UPPER ('%' || pc_term) || '%'
              ORDER BY 1;

   l_num                NUMBER          := 0;
   l_term               VARCHAR2 (4000);
  
BEGIN
   l_term := apex_application.g_x01;
   HTP.prn ('[');

   FOR rec IN c_names(l_term)
   LOOP
      IF l_num != 0
      THEN
         HTP.prn (',');
      END IF;

      HTP.prn (rec.ename);
      l_num := l_num + 1;
   END LOOP;

   HTP.prn (']');
END;

ü  Step 4 :

a) Create a dynamic action on change of P67_ENAME (Text Field).

  b) Create a True action as Execute Javascript Code and Check Fire on Page                      Load. Copy the below code.

Note : Below Javascript Code calls the AJAX Process whenever user types in the text field and passes the values to the process and displays the values in the textfield.
    
$( "#P67_ENAME" ).autocomplete({
  source:
function(req, add){
      //call the page process get_contact_data and put its return in greturn
      //this process returns markup for a JSON object so this can easily be parsed in jquery
      //x01: a temporary variable simply used for passing on a value
      $.post('wwv_flow.show',
             {"p_request"      : "APPLICATION_PROCESS=GET_NAMES",
              "p_flow_id"      : $v('pFlowId'),
              "p_flow_step_id" : $v('pFlowStepId'),
              "p_instance"     : $v('pInstance'),
              "x01"            : req.term
             },
              function(data){
                 if(data){
                    add($.parseJSON(data));
                               $("#P67_ENAME").removeClass("ui-autocomplete-loading");
                 }
                         else
                         {
                   $("#P67_ENAME").removeClass("ui-autocomplete-loading");
                         };
                         
             }
            );              
   },
   select: function(event, ui){
      $("#P67_ENAME").val(ui.item.value);
     // $("#P26_EMPNO").val(ui.item.value);
      event.preventDefault();
   },
   delay: 500,
   minLength: 1,
   autoFocus: true
});

6 comments:

  1. This is also works in 18.2 also,we tested and working fine for us.

    ReplyDelete
    Replies
    1. Can you tell how did you remove or why TypeError: $(...).autocomplete is not a function is comming

      Delete
    2. using jquery.noconflict for jquery version loaded through script file did the trick for me :)

      Delete
  2. this is not works in my 18.1 application console show this error -----
    TypeError: $(...).autocomplete is not a function
    at Object.javascriptFunction

    ReplyDelete
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