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+--- Thread: Validate input of two possible arrays (/showthread.php?tid=75346)
Validate input of two possible arrays - dwlamb - 01-28-2020
The code below depicts a form for which I am trying to create validation rules. The form is for adding or removing users from a group.
PHP Code:
<form action="http://some_site.com/form_edit_group" method="post" accept-charset="utf-8">
<p>Add to group. Hold Ctrl-key and click for selecting more than one.</p>
<select name="add_to_group[]" class="add_to_group" multiple size="4">
<option value="3">Jane Smith</option>
<option value="6">Jim Jones</option>
<option value="7">Casey Jones</option>
</select>
<p>Existing members of group. To remove hold Ctrl-key and click for selecting more than one:</p>
<select name="remove_from_group[]" class="remove_from_group" multiple size="4">
<option value="1">Bill Clinton</option>
<option value="4">James Carter</option>
<option value="5">John Kennedy</option>
</select>
<input type="hidden" name="group_id" value="3">
<input type="submit" name="submit" value="Submit" />
</form>
It is possible after clicking submit, $_post will have an array "add_to_group[]", "remove_from_group[]", both arrays or neither array in the event the administrator forgets to click on a user in either select list.
The validation rules I wish to set are:
- whether $_post contains "add_to_group[]" or "remove_from_group[]"
- if one or both of those arrays exist, perform checks on the data within the arrays <- these I have figured what to do
PHP Code:
$this->form_validation->set_rules('username', 'Username', 'callback_username_check');
such as 'username'. I want a rule with callback function that will examine $_post to see if either array exists. Is there another method?
RE: Validate input of two possible arrays - jreklund - 01-29-2020
You can set an custom callback on whatever field you want. For e.g. on the group_id. And in that custom callback grab both arrays and do your checks. Post are always available (in controller and model).
PHP Code:
public function check_groups()
{
$add_to_group = $this->input->post('add_to_group');
$remove_from_group = $this->input->post('remove_from_group');
if($checks_valid)
return true;
return false;
}
And depending on what fails, send custom error codes.
PHP Code:
$this->form_validation->set_message('check_groups', 'Add to group error');
$this->form_validation->set_message('check_groups', 'Remove to group error');
$this->form_validation->set_message('check_groups', 'No group selected?!');