Regex which allow minimum 0.01 and maximum 24 value in price

Question

I am using rails application

I want to allow price validation where min value : 0.01 and max value : 24

Also number start with allow:

What is model validation for this?

Will `validates :price, :inclusion => 0.01..24` do the trick? — Pavan, May 22 '14 at 08:29
@sshashank124 because of get proper message if error display — harsh4u, May 22 '14 at 09:13

score 2 · Answer 1 · answered May 22 '14 at 08:20

2

You can use the following:

^(?:0|0?\.(?:0[1-9]|[1-9]\d?)|(?:[1-9]|1\d|2[0-3])(?:\.\d{1,2})?|24(?:\.0{1,2})?)$

Regular expression visualization

answered May 22 '14 at 08:20

Ulugbek Umirov

And this is why @sshashank124 suggested doing a number comparison in the comments above... – awendt May 22 '14 at 08:22
@awendt Yes, I totally agree that regex is not the proper way to do it :) – Ulugbek Umirov May 22 '14 at 08:23
@UlugbekUmirov Thanks. I have used. It is working fine – H D Ahir May 29 '17 at 10:07

score 1 · Answer 2 · edited May 22 '14 at 08:59

1

I would first parse the strings for the any and all floats,

[-+]?(\d*[.])?\d+

then run comparison operators (x<=24 && x>=0.001) on the results to filter the permitted values.

There is no sense trying to do it all in one step with regex unless you are really strapped for resources.

edited May 22 '14 at 08:59

remdezx

answered May 22 '14 at 08:29

FutureTechLab

2 Answers2