How to resize image in existing record ?

Question

Hello,

I have 1 custom class which have minimum 30000 record which have images are stored.
Now, I want to resize all the images which is stored and also creating new record with image.

First image field is like as below
*variants_image_medium = fields.Binary('Product Image', store=True, attachment=True)*

Now, I converted image field as shown below
*variants_image_medium = fields.Binary('Product Image', inverse='_compute_images', store=True, attachment=True, readonly=False)*

*@api.multi
def _

Hilar Andikkadavath · Answer

For a computed function returning arguments should keep the format
{'value':
{ 'field_name':field_value}
}
So please check the  *rec satisfies this.
*

Denis Baranov · Answer

In your inverse you are changing current field, what invokes this inverse recursively:
Field value x > Field value x1 > Field value x2 > .... >

You should
1) either store resized image in a separated field
2) or add a condition in inverse not to make recursion, e.g.:
already_resized = fields.Boolean()
*@api.multi
def _compute_images(self):
for rec in self:
if not *already_resized and *rec.variants_image_medium:*
*                image = tools.image_resize_image_small(rec.variants_image_medium)

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