Re: Admin many-to-many inlines - show editable fields from parent models
On Wed, Nov 29, 2017 at 6:29 AM, Jan Hartman wrote:
> Either by specifying PairRecipeCategory or using
> Categories.recipes.through, I am referencing the model that manages the
> many-to-many relation. If I wouldn't create an intermediary model myself,
> Django would do it for me. Both options leave me with the same result -
> being unable to access the fields from the (virtual) imaginary model.
>
Indeed, I have tested the example in the documentation (
https://docs.djangoproject.com/en/1.11/ref/contrib/admin/#
working-with-many-to-many-models) and it does not work as expected (and
produces the same output that you are dealing with in your case). It seems
that it produces the inline only for the intermediary model and not linking
to the fields of the other model. The example in
https://docs.djangoproject.com/en/1.11/ref/contrib/admin/#
working-with-many-to-many-models works as expected, seems that this is the
case used for the fist one.
I think we have hit a bug, can someone confirm?
> Dne sreda, 29. november 2017 06.14.19 UTC+1 je oseba Matemática A3K
> napisala:
>>
>>
>>
>> On Tue, Nov 28, 2017 at 9:12 AM, Jan Hartman wrote:
>>
>>> Hi, I'm having trouble with inlining models with a many-to-many
>>> relationship through the intermediary model. My models are recipes and
>>> categories (a category includes multiple recipes and a recipe can belong to
>>> multiple categories).
>>>
>>> Models (simplified):
>>> class Recipe(models.Model):
>>> title = models.CharField(_('Title'), max_length=100, unique=True)
>>> categories = models.ManyToManyField('Category', through='
>>> PairRecipeCategory', verbose_name=_('Categories'))
>>>
>>> class Category(models.Model):
>>> title = models.CharField(_('Title'), max_length=100, unique=True)
>>> recipes = models.ManyToManyField('Recipe', through='PairRecipeCategory',
>>> verbose_name=_('Recipes'))
>>>
>>> class PairRecipeCategory(models.Model):
>>> category = models.ForeignKey(Category, on_delete=models.CASCADE)
>>> recipe = models.ForeignKey(Recipe, on_delete=models.CASCADE)
>>>
>>>
>>>
>>> Admin:
>>>
>>> class RecipeInline(admin.TabularInline):
>>> model = PairRecipeCategory
>>> # fields = ['recipe__title']
>>>
>>>
>>> class CategoryInline(admin.TabularInline):
>>> model = PairRecipeCategory
>>> # fields = ['category__title']
>>>
>>> + ordinary recipe and category ModelAdmin classes
>>>
>>> What I want to do is to show *editable* fields from the parent model
>>> (Recipe or Category) in the inlined PairRecipeCategory model instead of
>>> just listing the inlines. I get the "Unknown field for model xyz error"
>>> because the fields are not reachable from the intermediary model if I
>>> uncomment the fields lines.
>>> I've read about this on StackOverflow and such and I could not find a
>>> working solution. If anyone has any (even hacky) ideas, I would really
>>> appreciate the help.
>>>
>>>
>> I think that you are creating an inline for the intermediary model. not
>> an inline for the other model, here is how you should:
>> https://docs.djangoproject.com/en/1.11/ref/contrib/admin/#
>> working-with-many-to-many-models
>>
>> And your code is for doing this:
>> https://docs.djangoproject.com/en/1.11/ref/contrib/admin/#
>> working-with-many-to-many-intermediary-models
>>
>> HTH :)
>>
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>>> gid/django-users/c094f569-4cea-42cd-bd12-05f50e40c8f1%40googlegroups.com
>>>
>>> .
>>> For more options, visit https://groups.google.com/d/optout.
>>>
>>
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To post
Re: Admin many-to-many inlines - show editable fields from parent models
Either by specifying PairRecipeCategory or using
Categories.recipes.through, I am referencing the model that manages the
many-to-many relation. If I wouldn't create an intermediary model myself,
Django would do it for me. Both options leave me with the same result -
being unable to access the fields from the (virtual) imaginary model.
Dne sreda, 29. november 2017 06.14.19 UTC+1 je oseba Matemática A3K
napisala:
>
>
>
> On Tue, Nov 28, 2017 at 9:12 AM, Jan Hartman > wrote:
>
>> Hi, I'm having trouble with inlining models with a many-to-many
>> relationship through the intermediary model. My models are recipes and
>> categories (a category includes multiple recipes and a recipe can belong to
>> multiple categories).
>>
>> Models (simplified):
>> class Recipe(models.Model):
>> title = models.CharField(_('Title'), max_length=100, unique=True)
>> categories = models.ManyToManyField('Category', through='
>> PairRecipeCategory', verbose_name=_('Categories'))
>>
>> class Category(models.Model):
>> title = models.CharField(_('Title'), max_length=100, unique=True)
>> recipes = models.ManyToManyField('Recipe', through='PairRecipeCategory',
>> verbose_name=_('Recipes'))
>>
>> class PairRecipeCategory(models.Model):
>> category = models.ForeignKey(Category, on_delete=models.CASCADE)
>> recipe = models.ForeignKey(Recipe, on_delete=models.CASCADE)
>>
>>
>>
>> Admin:
>>
>> class RecipeInline(admin.TabularInline):
>> model = PairRecipeCategory
>> # fields = ['recipe__title']
>>
>>
>> class CategoryInline(admin.TabularInline):
>> model = PairRecipeCategory
>> # fields = ['category__title']
>>
>> + ordinary recipe and category ModelAdmin classes
>>
>> What I want to do is to show *editable* fields from the parent model
>> (Recipe or Category) in the inlined PairRecipeCategory model instead of
>> just listing the inlines. I get the "Unknown field for model xyz error"
>> because the fields are not reachable from the intermediary model if I
>> uncomment the fields lines.
>> I've read about this on StackOverflow and such and I could not find a
>> working solution. If anyone has any (even hacky) ideas, I would really
>> appreciate the help.
>>
>>
> I think that you are creating an inline for the intermediary model. not an
> inline for the other model, here is how you should:
>
> https://docs.djangoproject.com/en/1.11/ref/contrib/admin/#working-with-many-to-many-models
>
> And your code is for doing this:
>
> https://docs.djangoproject.com/en/1.11/ref/contrib/admin/#working-with-many-to-many-intermediary-models
>
> HTH :)
>
>> --
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>> "Django users" group.
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>> email to django-users...@googlegroups.com .
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>> .
>> Visit this group at https://groups.google.com/group/django-users.
>> To view this discussion on the web visit
>> https://groups.google.com/d/msgid/django-users/c094f569-4cea-42cd-bd12-05f50e40c8f1%40googlegroups.com
>>
>>
>> .
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>
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Re: Admin many-to-many inlines - show editable fields from parent models
On Tue, Nov 28, 2017 at 9:12 AM, Jan Hartman wrote:
> Hi, I'm having trouble with inlining models with a many-to-many
> relationship through the intermediary model. My models are recipes and
> categories (a category includes multiple recipes and a recipe can belong to
> multiple categories).
>
> Models (simplified):
> class Recipe(models.Model):
> title = models.CharField(_('Title'), max_length=100, unique=True)
> categories = models.ManyToManyField('Category', through='
> PairRecipeCategory', verbose_name=_('Categories'))
>
> class Category(models.Model):
> title = models.CharField(_('Title'), max_length=100, unique=True)
> recipes = models.ManyToManyField('Recipe', through='PairRecipeCategory',
> verbose_name=_('Recipes'))
>
> class PairRecipeCategory(models.Model):
> category = models.ForeignKey(Category, on_delete=models.CASCADE)
> recipe = models.ForeignKey(Recipe, on_delete=models.CASCADE)
>
>
>
> Admin:
>
> class RecipeInline(admin.TabularInline):
> model = PairRecipeCategory
> # fields = ['recipe__title']
>
>
> class CategoryInline(admin.TabularInline):
> model = PairRecipeCategory
> # fields = ['category__title']
>
> + ordinary recipe and category ModelAdmin classes
>
> What I want to do is to show *editable* fields from the parent model
> (Recipe or Category) in the inlined PairRecipeCategory model instead of
> just listing the inlines. I get the "Unknown field for model xyz error"
> because the fields are not reachable from the intermediary model if I
> uncomment the fields lines.
> I've read about this on StackOverflow and such and I could not find a
> working solution. If anyone has any (even hacky) ideas, I would really
> appreciate the help.
>
>
I think that you are creating an inline for the intermediary model. not an
inline for the other model, here is how you should:
https://docs.djangoproject.com/en/1.11/ref/contrib/admin/#working-with-many-to-many-models
And your code is for doing this:
https://docs.djangoproject.com/en/1.11/ref/contrib/admin/#working-with-many-to-many-intermediary-models
HTH :)
> --
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> To view this discussion on the web visit https://groups.google.com/d/
> msgid/django-users/c094f569-4cea-42cd-bd12-05f50e40c8f1%40googlegroups.com
>
> .
> For more options, visit https://groups.google.com/d/optout.
>
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Admin many-to-many inlines - show editable fields from parent models
Hi, I'm having trouble with inlining models with a many-to-many
relationship through the intermediary model. My models are recipes and
categories (a category includes multiple recipes and a recipe can belong to
multiple categories).
Models (simplified):
class Recipe(models.Model):
title = models.CharField(_('Title'), max_length=100, unique=True)
categories = models.ManyToManyField('Category', through='PairRecipeCategory'
, verbose_name=_('Categories'))
class Category(models.Model):
title = models.CharField(_('Title'), max_length=100, unique=True)
recipes = models.ManyToManyField('Recipe', through='PairRecipeCategory',
verbose_name=_('Recipes'))
class PairRecipeCategory(models.Model):
category = models.ForeignKey(Category, on_delete=models.CASCADE)
recipe = models.ForeignKey(Recipe, on_delete=models.CASCADE)
Admin:
class RecipeInline(admin.TabularInline):
model = PairRecipeCategory
# fields = ['recipe__title']
class CategoryInline(admin.TabularInline):
model = PairRecipeCategory
# fields = ['category__title']
+ ordinary recipe and category ModelAdmin classes
What I want to do is to show *editable* fields from the parent model
(Recipe or Category) in the inlined PairRecipeCategory model instead of
just listing the inlines. I get the "Unknown field for model xyz error"
because the fields are not reachable from the intermediary model if I
uncomment the fields lines.
I've read about this on StackOverflow and such and I could not find a
working solution. If anyone has any (even hacky) ideas, I would really
appreciate the help.
--
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"Django users" group.
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Visit this group at https://groups.google.com/group/django-users.
To view this discussion on the web visit
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For more options, visit https://groups.google.com/d/optout.
