Flask form submit: request.stream.read() contais data, but request.form doesn't -

i'm trying submit simpliest form ever:

<form class="form-search" action='/render' method="post">     <input name='test' type="text" class="input-medium search-query">     <button type="submit" class="btn">search</button> </form> 

(that's bootstrap, , i've taken raw example site)

...to simpliest handler ever:

@app.route('/render', methods=['post', 'get']) def render():     if request.method == 'post':         print request.stream.read()         print request.data         print request.form     return 'ok' 

and that's i've got:

>> test=1 >>  >> immutablemultidict([]) 

i'm confused: seems simple. i've seen couple of same-looking problems - issue missing input 'name' attribute, seems different case. thanks.

oh, i've figured out. looks when request.stream.read(), empties request.form dictionary.