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Katya,
thks for your feedback.
in fact, I rearranged the code sequence and got my canvas back.
it works as before (so far 
...).
sorry for disturbing you guys with that matter,
Eric
how can i map the blob image to appery? i'm using blob data type in mysql database. how can i upload it?
Hi Nisa -
Could you please explain what you're trying to do? You want to upload it into Appery.io cloud database?
i want to upload it to sql database any example? one more thing is it possible to do if i upload photo to appery.io database and the upload process refer to login process i made in php script ?
Nisa - Let's start from the beginning - Appery.io doesn't work with SQL DB or you mean you're using API Express in your app, in this case please create separate forum topic and describe there what you have tried so far and what you want to implement in your case.
i already ask in the new forum,also the answer out of scope even i'm using api express, all tutorial about text or string only,no discussion for image at all
Hi Nisa,
1 You can not use mapping for upload files.
2 Unfortunatly we don't have such example about how to upload files to 3rd party DB.
But Appery.io is phonegap/cordova based and you need to use solution for this platform.
Please learn example solution here: http://zacvineyard.com/blog/2011/03/u...
Regards.