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Changing required fields based on Dropdown

required fields dropdown

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#1 Berk



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Posted 25 February 2016 - 02:19 PM



I want to be able to change which fields are required based on result from a dropdown. Ex: if result is A, I want B and C to be required. Else if result is B, I want only C to be required. 

Is there a way to change required fields on the fly?





#2 titu


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Posted 26 February 2016 - 04:07 PM

You could hard code somehting in javascript.

#3 Amit Shah

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Posted 28 February 2016 - 06:57 PM

Well that is 1 way - there is another way around - i am sharing you 1 of the example...


        $state_required_if = $this->input->post('other_state') ? '' : '|required';
        $crud->set_rules('state', 'State / Province', 'trim' . $state_required_if);

well.. here if you see . what i am doing is - if the drop down value selected is other_state - it will ignore state .. else it will ensure it is set required.

Every time the validation needs to be done - GC makes an ajax call .. where it sees this condition - dynamically generated.


You can alter the same accordingly to your needs.


Happy GCing. 

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