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Anonymous
Nov 8, 2016 8:48 PM UTC
Question

External Form Prefill

Has anyone ever used these instructions to implement form prefill on external landing pages (non-Marketo)? Looking for any positives/negatives of doing that. Thanks!

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12 replies

SanfordWhiteman
SanfordWhiteman
Level 10
Nov 17, 2016 6:00 PM UTC

Ulf was being gentle because he probably knew I'd jump in.

That method has potentially monstrous negative impact as it creats a a DoS attack vector against your instance. In order to create a (somewhat) safer implementation of that method you'd need a quite skilled developer.  Hiring a front-end developer with less experience (though of a different kind) to do it in the browser is going to be easier, more stable, and more scalable.

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Jessica_Cross1
Jessica_Cross1
Level 4
Dec 7, 2016 9:20 PM UTC

Tell me more Sanford Whiteman​ how do I make this happen? I have an account sign up (trial) form that I want prefilled with the users cookied information.

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SanfordWhiteman
SanfordWhiteman
Level 10
Dec 7, 2016 10:17 PM UTC

Jessica, hit me up offline and I can go through the process with you. I keep it close to the vest...

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    Ulf_Deeg
    Ulf_Deeg
    Level 3
    Nov 17, 2016 4:30 PM UTC

    Hi Alex,

    it is pretty costly on API calls.

    You might look for embedding Marketo forms via iframes instead.

    You will probably need someone JavaScript savvy to assist you for turning that around. There will be loads of pitfalls around cross site scripting, responsiveness etc.

    Best

    Ulf

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    Jessica_Cross1
    Jessica_Cross1
    Level 4
    Dec 7, 2016 9:19 PM UTC

    iFrames?  Really??

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