python - Django: Update exsisting record with form=MyForm(instance=MyID) doesn't work -

i'm try update existing record, had create form, in view call editrecipeform(instance=recipe.objects.get(id=recipe_id) in view don't appear existing fields.

here structure of directory

rsg ├── src |   ├── recipes |   |   ├── forms |   |   |   ├── __init__.py |   |   |   └── update.py |   |   ├── __init__.py |   |   ├── admin.py |   |   ├── models.py |   |   ├── test.py |   |   ├── urls.py |   |   └── views.py |   ├── rsg |   |   └── ... |   ├── signups |   |   ├── ... |   |   └── ... |   └── magnate.py ├── static     ├── media     ├── static     ├── static-only     ├── templates     |   ├── recipes     |   |   ├── profileview.html     |   |   ├── recipedit.html     |   |   └── recipecreate.html     |   ├── signups     |   └── ....     ├── ...     └── index.hml 

here recipe models: rsg/src/recpes/models.py

class recipe(models.model):  name = models.charfield('nome',max_length=200)     description = models.textfield('presentazione', null=true, blank=true, default="")  directions = models.textfield('preparazione', null=true, blank=true) pub_date = models.datetimefield('data di pubblicazione',auto_now_add=true, auto_now = false)     updated = models.datetimefield('data ultima modifica', auto_now_add=false, auto_now = true)     img = models.imagefield('immagine', upload_to="/static/images/", null=true, blank=true)      difficulty_grade = (         ('bassa', 'bassa'),         ('media', 'media'),         ('alta', 'alta'),         ('molto alta', 'molto alta'),     )      cost_size = (          ('basso', 'basso'),           ('medio', 'medio'),            ('alto', 'alto'),     )     difficulty = models.charfield(smart_unicode('difficoltà'), max_length=20, null=true, blank=true, choices=difficulty_grade)     time_preparation = models.integerfield('preparazione', null=true, blank=true)     time_preparation_min_h = models.charfield('ore/minuti', max_length=20, null=true, blank=true,                                                 choices=(('ore', 'h'),('minuti','min'),('giorni','gg'),))     time_cooking = models.integerfield('cottura', null=true, blank=true)     time_cooking_min_h = models.charfield('ore/minuti', max_length=20, null=true, blank=true,                                                 choices=(('ore', 'h'),('minuti','min'),('giorni','gg'),))     dose_for = models.charfield(smart_unicode('dosi per'), max_length=20, null=true, blank=true)     cost = models.charfield(smart_unicode('costo'), max_length=20, null=true, blank=true, choices=cost_size)      total_calories =models.decimalfield('calorie totali', max_digits=9, decimal_places= 2, default=0)     count_like = models.integerfield('likes', default=0)     count_dontlike = models.integerfield('don\'t likes', default=0)      # relation signup author of recipe author_recipe_user = models.foreignkey(settings.auth_user_model, related_name='authorrecipeuser')      # relation signup like/notlike  voter_user = models.manytomanyfield(settings.auth_user_model, through='likes')      # relation n:m ingredients ingredients = models.manytomanyfield(ingredient, through='madewith')  def __unicode__(self):     return self.name 

there relation other table it's not important...

the file contains editrecipeform rsg/src/recipes/forms/update.py

from django import forms recipes.models import recipe  class editrecipeform(forms.modelform):     class meta:           model = recipe           fields = ('name','description','directions','img','difficulty','time_preparation',                     'time_preparation_min_h','time_cooking','time_cooking_min_h','dose_for',                     'cost') 

the view.py file:

def recipedit(request, recipe_id):      recipe = recipe.objects.get(pk=recipe_id)     form = editrecipeform(instance=recipe)      if request.post:          if form.is_valid():             form.save()              return httpresponseredirect("recipes/profileview.html")      else:         form = editrecipeform(instance=recipe)       return render_to_response("recipes/recipedit.html",                               locals(),                               context_instance=requestcontext(request)) 

i pass argument "instance" form empty...

i need thank everybody!!

---

this template file

{% extends 'base.html' %}  {% block content %}     <br>     <br>     <br>     <br>     <form action="" method="post">{% csrf_token %}     {{ form.as_p }}         <input type="submit" value="submit" />     </form>  {% endblock %} 

you didn't pass post data well.

def recipedit(request, recipe_id):     recipe = recipe.objects.get(pk=recipe_id)         if request.post:         form = editrecipeform(request.post, instance=recipe)         if form.is_valid():             ...