CodeIgniter - form validation and POST data

Question

I have a form that displays questions from a questionnaire. Some questions are True/False (radio buttons) but some are free text input. Each questionnaire can have any number of questions, which are stored in a lookup table along with the answer provided by the user. To take advantage of CodeIgniters form validation library, I figured I would use an array for the input names and store the primary key of the survey question as the index:

View:

<input type="radio" name="question[<?=$id;?>]" value="<?=$answer?> <?=set_radio('question['. $id . ']', $answer) ?> />

Controller:

$this->form_validation->set_rules('question[]', 'Questions', 'required');

CodeIgniter doesn't seem to validate radio buttons properly when there is no default value set. Any ideas on whether or not I am doing this correctly?

Jakub · Accepted Answer · 2014-03-25 13:22:01Z

2

Reference: http://ellislab.com/codeigniter/user-guide/libraries/form_validation.html#arraysasfields

Check the arrays as fields reference, but you need to call the specific array, if your input is question[pie], your validation needs to check for question[pie] and not questions[].

I'm just making assumptions here as I don't know what you get as a response or what you have tried.

answered Mar 25, 2014 at 13:22

Jakub

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2 Comments

Matt Koch Over a year ago

Thanks for the reply. I have several true/false questions on my form, and the names are dynamically generated: question[11], question[13], question[15], etc. The validation of $this->form_validation->set_rules('question[]', 'Questions', 'required'); does appear to work but only if no radio buttons are selected. As soon as one is selected, all of the others pass validation.

Jakub Over a year ago

well if you validate question[] you validate the ENTIRE array (so a single TRUE) makes the required TRUE. You need to dynamically create single ..validation->set_rules('question[XX]') for each question in your form. Don't run it on the root array question[]

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