如何在Rails中为date_select设置今天的最长时间？

Question

I have where a person can choose date of birth:

= form.date_select :date_of_birth, start_year: Date.current.year, end_year: Date.current.year - 333

I want it to have the maximum date of today. The max day must be equal to today and max month. Not only year.

I've tried "min: Date.today" and "max: Date.today" and it didn't work out.

How can I do that?

Answer 1

Ok, based on the negative points I got on my previous answer, let me explain this a bit more. The Rails datepicker renders three selects, one for day, one for month and one for year. Since this is "fixed" there's no option to reduce the amount of days or months. This would not allow you to select a valid date anymore. The only thing you can change is the range of years. You already did that in your sample code.

Now, back to your use case. You'd like to prevent someone inputing a date in the future? Sure. You've got three options:

1. Only validate this server side, through a model validation and present the user back with the error message: "birth date should be in the past". Always do this!!

The following are nice-to-haves to add to 1:

2. Capture form submission through JS, check the submitted date and show error in case the date is invalid
3. Change the way you display the date through some kind of Datepicker plugin. jQuery UI has a few nice one: https://jqueryui.com/datepicker/ . This one allows you to better configure allowed dates, since it is programmed client-side

Hope this helps.

Answer 2

Don't bother about dates in the future yet. Just ignore such bad entries for now. Best to add a validation to the model that checks whether the submitted date < Date.today . If you do wish to have front-end / client-side validation, look for a JS / jQuery datepicker. These are more easy to configure and support direct inline error messages.