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POCallback Validation
 

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    <p>I am having an issue trying to display the form validation error on the view using a callback validation function. If the user selects 'Yes' for the vehicle option, the form should check for other mandatory fields related to that vehicle option field. </p> <p>In my controller I have a simple function that outputs the form and gets data back from the form:</p> <pre><code>function new_customer_record() { if ($this-&gt;form_validation-&gt;run() == FALSE) { // data array has values to be passed to the customer_form_view $this-&gt;load-&gt;view('customer_form_view',$data); }else{ //get data from the post method and save it to the database } } </code></pre> <p>In the config folder, I have a file called from_validation.php that has the array filled with validation rules and the callback function as shown below:</p> <pre><code>$config = array ( 'employee/new_record' =&gt; array( array ( 'field' =&gt; 'first_name', 'label' =&gt; 'First Name', 'rules' =&gt; 'required', ), array ( 'field' =&gt; 'vehicleOwn', 'label' =&gt; 'Own a vehicle', 'rules' =&gt; 'required|callback_checkVehicleInfo', ), ), ); function checkVehicleInfo($str){ if ($str == "Yes"){ $config = array ( 'employee/new_record' =&gt; array( array ( 'field' =&gt; 'vehicle_model', 'label' =&gt; 'Vehicle Model', 'rules' =&gt; 'required' ), array ( 'field' =&gt; 'vehicle_rego', 'label' =&gt; 'Vehicle Rego', 'rules' =&gt; 'required' ), array ( 'field' =&gt; 'vehicle_type', 'label' =&gt; 'Vehicle Type', 'rules' =&gt; 'required' ), ), ); $this-&gt;form_validation-&gt;set_message('checkVehicleInfo','Please enter your vehicle information'); return FALSE; }else{ return TRUE; } } </code></pre> <p>In the view, i have something similar to this for each field that has 'required' validation rule - other fields work fine except the vehicle mandatory fields (in the callback function):</p> <pre><code>&lt;?php $vehicle_model = @field($this-&gt;validation-&gt;vehicle_model, $customer- &gt;vehicle_model); ?&gt; &lt;tr&gt; &lt;td&gt;&lt;label&gt;Vehicle Model&lt;/label&gt;&lt;/td&gt; &lt;td&gt;&lt;input name="vehicle_model" type="text" value="&lt;?php echo ($edit=== true)? $vehicle_model :set_value('vehicle_model'); ?&gt;" size="20" maxlength="20"&gt; &lt;?php echo form_error('vehicle_model'); ?&gt;&lt;/td&gt; &lt;/tr&gt; </code></pre> <p>But I am not getting any error messages displayed, the validations is not working either.</p>
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