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paidy kumar 
 odoo.define("portal_student.registration", function (require) {
$(document).on("change", "#course_dropdown", function (){
var rpc = require('web.rpc');
                                    var course = document.getElementById("course_dropdown");

                                    rpc.query({

                                    model: 'op.batch',

                                    }).then(function (data) {

                                    for(i in data){ 
                                    document.getElementById("batch_id").value = i.name;}

                                    });

                                    }); 
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Cybrosys Techno Solutions Pvt.Ltd
Best Answer

Hi Paidy,
You can use the below code get records inside 'op.batch' model in javascript.

odoo.define("portal_student.registration", function (require) {
    $(document).on("change", "#course_dropdown", function (){
        var rpc = require('web.rpc');
        var course = document.getElementById("course_dropdown");
        rpc.query({
            model: 'op.batch',
            method: 'search',
            args: [[]]
        }).then(function (data) {
            // you will get all the records inside op.batch model from data variable
            for(i in data){
                document.getElementById("batch_id").value = i.name;
            }
        });
    });
});

Regards
Cybrosys

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paidy kumar
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this is not working for my form why

<div class="col-md-8">

<select id="course_dropdown" class="form-control" name="course_id">

<option value="">

<lable>Select your option</lable>

</option>

<t t-foreach="course" t-as="course_id">

<option t-att-value="course_id.id">

<t t-esc="course_id.name"/>

</option>

</t>

</select>

</div>

<div class="col-md-4 mt16">

<lable for="batch_id">Batch:</lable>

</div>

<div class="col-md-8 mt8" id="batch_id">

<select class="form-control" id="batch_id"

name="batch_id" required="1">

</select>

</div>

paidy kumar
Author

when i select the course_id value batch_id value is not updating please help me