Error: $interpolate:noconcat Multiple Expressions in ionic framework when calling a form action

I want to call a PHP process on my server through form action.

It's work when I call like this :

<form action="https://mysite/profileImages/upload.php method="post" enctype="multipart/form-data">

And It's also worked, like

<form action="https://myurl/profileImages/upload.php?email=myEmailIsText" method="post" enctype="multipart/form-data">

But I want to send an email parameter from my database to the PHP process, like:

<form action="https://myurl/profileImages/upload.php?email={{datauser.email}}" method="post" enctype="multipart/form-data">

It gives me Error: $interpolate:noconcat Multiple Expressions

{{datauser.email}} is contained an email from my database, and it shows the value if I call it outside the field of form action.

How to resolve this problem?