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Require just the zip code?

  1. ananda
    Member

    We'd like to able to require just the zip code field of an address. Is this possible, using the pre-built address field?

    This is a form it would be good to do on:
    http://www.anandala.org/free-book-chapters/

    Thanks!

    Posted 9 years ago on Friday November 12, 2010 | Permalink
  2. Ananda,
    This is possible through a hook and a few lines of PHP, but it will require some PHP experience.

    Posted 9 years ago on Friday November 12, 2010 | Permalink
  3. ananda
    Member

    Hi Alex, thanks for your answer. That's great to know. I see now that the hooks are documented.

    Looks like I would use gform_pre_submission to run a validation on the zip code and -- somehow?? -- stop the form?

    Posted 9 years ago on Friday November 12, 2010 | Permalink
  4. You would actually need to use the gform_validation filter. Following is a simple example on how to fail a validation for the first field in the form. It should point you in the right direction

    <?php
    add_filter('gform_validation', 'custom_validation');
    function custom_validation($validation_result){
    
        // set the form validation to false
        $validation_result["is_valid"] = false;
        $form = $validation_result["form"];
    
        // specify the first field to be invalid and provide custom validation message
        $form["fields"][0]["failed_validation"] = true;
        $form["fields"][0]["validation_message"] = "This field is invalid!";
    
        // update the form in the validation result with the form object you modified
        $validation_result["form"] = $form;
    
        return $validation_result;
    
    }
    ?>
    Posted 9 years ago on Sunday November 14, 2010 | Permalink
  5. ananda
    Member

    Superb. Thanks, Alex.

    Is there a complete list of filters anywhere?

    Posted 9 years ago on Tuesday November 16, 2010 | Permalink
  6. A complete list of filters will be available with the new documentation that will launch along with the 1.5 final release once it is out of beta testing.

    Posted 9 years ago on Tuesday November 16, 2010 | Permalink
  7. shmooth
    Member

    Hi all,

    Thought I'd add a note for other n00bs like me:

    1) when I first copied this example, I somehow got rid of the following line -- that will break things:

    $form = $validation_result["form"];

    2) to get access to the submitted data, you have to access it via the regular HTTP $_POST["input_name"] PHP server variable (where 'input_name' is probably 'input_1', etc.), b/c at this stage of processing, the $form does not seem to have the submitted values set.

    so, my full, working test example is:

    add_filter('gform_validation', 'custom_validation');
    
    function custom_validation($validation_result){
    
        $form = $validation_result["form"];
    
        // if value of first field name != 'peter'
        if( strcmp($_POST["input_1"],"peter")!=0 ){  
    
            // then mark this submission invalid
            $validation_result["is_valid"] = false;
    
            // mark the errant field [the first (0th) field]
            $form["fields"][0]["failed_validation"] = true;
    
            // and put in an explanatory message to the user on how to fix
            $form["fields"][0]["validation_message"] = "This first field must have the value 'peter'.";
        }
    
        // update the form in the validation result with the form object you modified
        $validation_result["form"] = $form;
    
        return $validation_result;
    }
    Posted 8 years ago on Monday December 20, 2010 | Permalink