Validate Discount amount with Unit price in Quote line items

Question

Hi,

I am using sugar 7.9 version. I am trying to validate the quote line item based on the below criteria.

If Discount amount is greater than Unit price then I need to show a error message like `Total Discount amount should be less than or equal to the Unit price`.

I tried to achieve this using

'validation' => array(
'type' => 'range',
'min' => '0',
'max' => '$discount_price,
),

It's not working as expected.

But both the fields are in currency datatype. So I am not sure How to achieve this validation.

Thanks in advance

Vijayakumar S · Answer

Hello André Lopes , 
 I find by myself before your post, thanks for the trick, it's working very well. We can use the validation tasks for a Quoted Line Item, it's working like a charm ! 
 Here is an example of code for the other developers who are facing the same problem : 
 ({
 extendsFrom: 'ProductsQuoteDataEditablelistbuttonField',

 initialize: function(options) {
 this._super('initialize', [options]);

 this.model.addValidationTask('quantity', _.bind(this._doValidateQuantity, this));
 this.model.addValidationTask('discount_amount', _.bind(this._doValidateDiscountAmount, this));
 },

 _doValidateQuantity: function(fields, errors, callback) {
 //validate type requirements
 if (this.model.get("quantity") == 0) {
 errors['quantity'] = errors['quantity'] || {};
 errors['quantity'].required = true;
 }

 callback(null, fields, errors);
 },
}) 
 Hope this will help the other friends ! 
 Merry christmas every body and stay safe ! 
 Enes