Generating pdf file through ajax call

Question

I've got a button (link to controler/action) which after clicking calls action validating and generating pdf from php. This function validates i.e. if pdf should generate for this user and if there will be any errors it would not generate certificate but show those errors (of course, if there's no error it will generate certificate and download the file).

I need to do this without reloading the page. And that brings a problem. When I call this function through ajax it gives me the answer with json about any occuring errors, but if there's error it does not generate pdf but ajax gives me PDF as hashed text. I would like to force it to generate pdf and download it to pc.

Moppo · Accepted Answer · 2015-06-08 16:50:42Z

2

You can't make the client download the file through an ajax request, because with an ajax call you are generating the PDF server-side with PHP and returning his content to the caller script ( in fact you retrive the pdf hashed text)

What you could do is generate the PDF in the ajax call, save the file somewhere, and then return a response from the ajax call. If the response is 'negative' you could show the errors without reloading the page. If the response is positive you could redirect from javascript (non via ajax) to a PHP script serving the just-created PDF

answered Jun 8, 2015 at 16:50

Moppo

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