ok, thank you.
On Thu, Mar 14, 2013 at 4:57 PM, lowpass <[email protected]> wrote:
> You could extract the IDs of the already-chosen courses and use those
> to exclude from the other results.
>
> // get registered courses
> $registered_data = $this->YourModel->find(...);
>
> $keys = Set::extract(
> '{n}.Listing.id',
> $registered_data
> );
>
> // get available courses
> $available_data = $this->Listing->find(
> 'all',
> array(
> 'conditions' => array(
> 'NOT' => array(
> 'Listing.id' => $keys
> )
> )
> )
> );
>
> This isn't a very efficient query, though.
>
> Depending on how your first data array is structured, you may have to
> use 'Listing.{n}.id' instead.
>
> On Thu, Mar 14, 2013 at 4:28 PM, Joseph zhu <[email protected]> wrote:
> > In fact, the question is that, I am responsible for managing a education
> > website, the website will supply courses for each quarter,
> > the courses supplied for each quarter maybe same, but the students won't
> be
> > allowed to choose the courses which the students have choose before.
> > Now I can get the courses the students have chosen before.
> > foreach($registered as $value){
> > echo $value['Listing']['title'];
> > }
> >
> > and here is the course supplied for the current quarter.
> > foreach($courseListings as $listing){
> > echo $listing['Listing']['title'];
> > }
> > so if some courses were chosen by the student before, he won't be
> allowed to
> > choose the course for the current quarter.
> > Below is the form for courses register.
> > <tr>
> > <td width="24%">Enroll in course :</td>
> > <td width="42%">
> > <?php echo $form->create('Registration',array('action'=>'index')); ?>
> > <?php echo $form->input('listing',array('label'=>false,'div'=>false)); ?>
> > </td>
> > <td width="34%"><?php echo $form->end('Enrol') ?></td>
> > </tr>
> > I tried but didn't figure it out.
> > Do you have some good ideas?
> > Thank you so much.
> >
> > On Thu, Mar 14, 2013 at 9:22 AM, Joseph zhu <[email protected]>
> wrote:
> >>
> >> two array:
> >> one is: foreach($courseListings as $listing){
> >> echo $listing['Listing']['title'];
> >> }
> >> another one:
> >> foreach($registered as $value){
> >> echo $value['Listing']['title'];
> >> }
> >> How to campare them and get the same elements.
> >> Thanks a lot.
> >>
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> >
> >
> >
> >
> > --
> > God bless you!
> > Joseph
> >
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God bless you!
Joseph
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