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SilverStripe Forums » Data Model Questions » How to limit user selection in ManyManyComplexTableFiled

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  • Ben_W
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    How to limit user selection in ManyManyComplexTableFiled Link to this post

    I have the following ManyManyComplexTableField, which basically form a many to many relationship that allows user to pick number of pages as recommended reading for a given page. Is there a way I can enforce a business rule into this, say user may not select more than 5 pages as recommended reading. Need a way to disable the checkbox I would thought. Any pointer would be deeply appreciated. Cheers.

    $tablefield = new ManyManyComplexTableField(
       $this,
       'MyRegionPages',
       'Page',
       array(
          'Title' => 'Page Name',
          'BoldIntroduction' => 'Bold Introduction'
       ),
       'getCMSFields_forPopup',
        "SiteTree.ID != $this->ID AND SiteTree.ParentID=$this->ParentID",
        'Sort'
    );

    $tablefield->setPermissions(array(
    ));

    $fields->addFieldToTab( 'Root.Content.FurtherReadings', $tablefield );

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