Disable booked dates

Hello,
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I need to disable booked dates from the datepicker field.
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Form submissions are stored in a database table (managed by Chronoforms).
I guess should be quite a simple task, but still not finding a solution.
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How to do it?
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Thanks in advance.
Alex

Can't sorry. Would have to code that yourself.

Thanks,
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I noticed that using custom code is the only solution.
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Do you know how if on a CF submission is possible to update any database table, also of a different components and modules.
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Thanks.

You can update any data table you want

I guess I need to add a
Database -> Save Data from core unction
into
Submit - Action tab
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and select the DB table that I want.
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I need to save a two values (Date and Name) into JSON formatted field.
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There's some JSON encode option, data provider and override, but how to use them?

Depending on what you need done, you can use a PHP action to return your JSON formatted string and then {var:php_block_name} in your save data action to use that value. You can get the value of a form field in PHP with $this->data("fieldname")