go-model | use struct mapper and utility methods | 3D Printing library

by jeevatkm Go Version: v1.1.0 License: MIT

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | go-model Summary

go-model is a Go library typically used in Modeling, 3D Printing applications. go-model has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Robust & Easy to use struct mapper and utility methods for Go

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go-model has a low active ecosystem.

It has 307 star(s) with 18 fork(s). There are 7 watchers for this library.

It had no major release in the last 12 months.

There are 1 open issues and 8 have been closed. On average issues are closed in 181 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of go-model is v1.1.0

Quality

go-model has no bugs reported.

Security

go-model has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

go-model is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

go-model releases are available to install and integrate.

Installation instructions, examples and code snippets are available.

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go-model Examples and Code Snippets

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Community Discussions

Trending Discussions on go-model

Django 2.2 cannot serialize default values once migration has been done

IntegrityError: FOREIGN KEY constraint failed in django

Models CharField Blank and Null

ordering modelchoicefield in django loses formatting

How would I manage to upload al the rows with the django view?

Changing language with React Native and django-modeltranslation

Storing dynamic data in django

Can't pass null fields into django floatfield?

How to create dropdown box with forms.ModelForm in Django?

When trying to create a new Django CreateView form, my forms are being populated with the data that was entered in the last form

QUESTION

Django 2.2 cannot serialize default values once migration has been done

Asked 2021-Jun-04 at 12:52

I have a model which is refered to as a foreignkey with on_delete set to SET_DEFAULT. Because of that, I need to provide this model with a default item. I created a static method which does just that.

...

ANSWER

Answered 2021-May-31 at 10:23

Django needs to serialize your models to make migration files for them. Hence it also needs to serialize most of the attributes you set on the model fields (default included). Currently you define a method and directly call that instead of providing the method as the default, also your method returns a tuple with ScheduleChoice and a boolean.

Django can serialize booleans but not the model instance (for the migration) hence you get an error, not to mention the tuple would have caused an error anyway. You should not call the method and instead just pass the method as the default, also instead of returning the instance return only the pk, also ideally this method should simply be a function:

Source https://stackoverflow.com/questions/67771130

QUESTION

IntegrityError: FOREIGN KEY constraint failed in django

Asked 2021-May-20 at 17:27

I have a django view that causes FOREIGN KEY constraint failed. This is coming from a related question

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ANSWER

Answered 2021-May-20 at 17:27

Do DO_NOTHING is typically not a good option since (most) databases will check referential integrity. This means that they guarantee that if a ForeignKey refers (in this case to an Issue), then that means that the table that stores the issues should have a record with the primary key the Return item refers to.

Often DO_NOTHING is used in combination with a certain trigger in the database system (that Django is not aware of).

Typically the most popular choices foron_delete are:

models.CASCADE: in that case it will remove all Returns related to the removed item;
models.PROTECT: in that case it will raise an error to prevent removing the Issue; and
models.SET_NULL: this is done on a NULLable field (so with null=Ture), in which case the impacted Return(s) will set the field to NULL/None.

Another option might be to "soft delete" records, for example with the django-soft-delete package [pypi]. In that case a boolean is added to the Issue that specifies if the item is removed. The package will also transparently filter the objects, such that you only retrieve records that are "alive".

Source https://stackoverflow.com/questions/67625055

QUESTION

Models CharField Blank and Null

Asked 2021-May-14 at 09:19

I have the following model :

...

ANSWER

Answered 2021-May-14 at 09:19

null=False does not mean a CharField cannot have an empty string as a value. Also the model's create and save, etc. methods do not validate the model while creating it. The blank attribute is used when the model is validated, usually the form will call the various methods on the model available for validating the instance when you call form.is_valid(). You can validate an instance by simply calling the full_clean method (Reference Validating objects [Django docs]):

Source https://stackoverflow.com/questions/67531654

QUESTION

ordering modelchoicefield in django loses formatting

Asked 2021-May-01 at 04:49

I wanted to order a list in my form view, and found this post here:

How do I specify an order of values in drop-down list in a Django ModelForm?

So I edited my code and added the line specialty = forms.ModelChoiceField(queryset ='...')

So then I reload the form and the widget is all smoshed and funky looking. I checked the html code and the specialties are indeed in the right order! But it misses the widget definition lower adding the form-control class. I am not sure why. if I remove the line specialty = form.ModelChoiceField then everything looks great aside from the dropdown not being in the right order (alphabetical by name field)

Not sure why it is missing that widget definition and attaching the class form-control or the tabindex even. Guessing the specialty = forms.ModelChoiceField is overriding it somehow?

...

ANSWER

Answered 2021-May-01 at 04:49

This is explained in the documentation, inside a big note:

When you explicitly instantiate a form field like this, it is important to understand how ModelForm and regular Form are related.

ModelForm is a regular Form which can automatically generate certain fields. The fields that are automatically generated depend on the content of the Meta class and on which fields have already been defined declaratively. Basically, ModelForm will only generate fields that are missing from the form, or in other words, fields that weren’t defined declaratively.

Fields defined declaratively are left as-is, therefore any customizations made to Meta attributes such as widgets, labels, help_texts, or error_messages are ignored; these only apply to fields that are generated automatically.

So, just add the widget argument to your declarative field:

Source https://stackoverflow.com/questions/67339575

QUESTION

How would I manage to upload al the rows with the django view?

Asked 2021-Apr-07 at 19:38

I posted this question here and got a suggestion. I managed to go through it but wasn't able to implement it for the import part[I managed export]. I'm therefore back with the question. Could I have a way to loop through all the rows in the uploaded file and have all the data uploaded. Currently it uploads only one item, one row.

...

ANSWER

Answered 2021-Apr-07 at 19:38

I was able to get this working with an example here by Vinaykumarmaurya

Here is the view

Source https://stackoverflow.com/questions/66983150

QUESTION

Changing language with React Native and django-modeltranslation

Asked 2021-Mar-13 at 16:38

I would like to add option to mobile app to change language. Im using django on backend and RN as mobile. So I installed django-modeltranslation and added my model I want to translate. On mobile I display available languages. When user clicks on specific language I would like to get translated data. I have huge problem to create logic how to do it. I'm not asking about code just some hints and idea

EDIT: For example: I added translation from django-modeltranslation to my model (i.e GameTask with field title, description etc). In my settings.py I have declared languages ('en','de','uk',etc) and added translations in database (for every field of GameTask, I added title(en), title(de) etc). When I change language in settings.py, values on mobile are changing too (so working as intended). So im not storing any translated text in app files, just in database (except of static errors and informations). Now I just want to send info from mobile with chosen language and activate this language on backend to return content in specific language

...

ANSWER

Answered 2021-Mar-13 at 16:38

If you want to completely make your application multi-language, you need two things.

Translation system for your app
Translation system for your api.

First, use a pre-built context api or create your own to support changing language in-app. Something like this: https://medium.com/@ally_20818/multi-language-text-with-react-native-react-context-b76d5677346d

When user changes the language, store the language name or key in async-storage or some other database.

Change the texts in the react-native side based on the selected language.

When you're making a api call, send the selected language too. Get the selected language on api side and return appropriate texts based on language.

UPDATE:

Since you're not storing any text on react-native side, you only need to add a picker (react-native-picker/picker is a native picker) and store the selected language key (en, de, uk etc in your case) in a database like react-native-async-storage. When you're making api requests with react-native, include an additional header or post data which includes selected language key. And you can get and use that key in your django back-end.

Source https://stackoverflow.com/questions/66613887

QUESTION

Storing dynamic data in django

Asked 2021-Mar-10 at 10:38

So, in my application I currently am receiving and storing some data,the structure currently is based around this:

Each application has a number of devices
Each device has incoming data from its sensors
Each sensor has a type (e.g. temperature/humidity/etc)

Initially, I had wanted to find a solution to store the data dynamically into one table for all data, with a model that might look like this:

...

ANSWER

Answered 2021-Mar-10 at 10:38

The method I ended up using, if anyone faces a similar issue, is as follows:

The main model:

Source https://stackoverflow.com/questions/66547853

QUESTION

Can't pass null fields into django floatfield?

Asked 2021-Mar-10 at 04:02

(approach inspired by this thread)

I have some json data that I want to import into django models using the example data:

...

ANSWER

Answered 2021-Mar-10 at 04:02

You may need to run a migrate with python manage.py migrate.
Any sort of schema related changes like changing fields, tables, etc. needs a migrate.

Source https://stackoverflow.com/questions/66557825

QUESTION

How to create dropdown box with forms.ModelForm in Django?

Asked 2021-Feb-21 at 21:06

I'm trying to add a dropdown box of choices in my form. What I tried:

...

ANSWER

Answered 2021-Feb-21 at 13:14

Try to use this method of Choices :-

models.py

Source https://stackoverflow.com/questions/66302329

QUESTION

When trying to create a new Django CreateView form, my forms are being populated with the data that was entered in the last form

Asked 2021-Jan-29 at 20:18

Using Class Based Views, ModelForms, and Inlline Formsets. I’m making a recipe application in Django. Each user has their own OneToOne RecipeBook object, which in turn can hold as many recipes as needed, as each Recipe has a ForeignKey relationship to the RecipeBook object. There are also Ingredient and Direction objects that each have a FK relationship to the Recipe object.

The good news is that I can create a Recipe object using my CreateView, with as many associated Ingredient and Direction objects as I want. The Ingredient/Direction objects should be unique to each Recipe object (and by extension, each User). However, when I create a Recipe object, and then I try to create a new Recipe object, its Ingredient and Direction fields are already populated on the new object, form the old object. So if I had just created a Recipe with 3 Ingredient/Direction fields all set to '1', and then go to create another Recipe, the new Recipe object will have all blank fields, but will have 3 Ingredient/Direction objects all set to 1. This will happen to each user that is logged in. I want to make it so these objects are all staying together.

I think the issue to this is that either my get_context_data or my form_valid methods are saving the Ingredient/Direction objects globally, when I just want each Ingredient/Direction object to only be associated with the specific recipe object. I’ve tried messing with the init function of my Forms, I’ve tried querying for the object before/while its being created, and it seems like no matter what I do I’m just running in circles. I’d appreciate any help/resources anyone can point me towards!

My Models:

...

ANSWER

Answered 2021-Jan-29 at 20:18

For anyone who also has this issue, here's the fix, from the Django forum's user KenWhitesell:

You can chase this down through the source code if you really want to understand what’s going on, but the Reader’s Digest version is that an inline formset is created under the assumption that the formset is linked to an existing instance. If one isn’t supplied, it selects one from the database.

The fix, for me, was in the CreateView's get_context_data() method: since we don't want the inline_formset to be querying for any objects on a CreateView, you have to explicitly tell it not to with a queryset parameter on the GET request like this:

Source https://stackoverflow.com/questions/65875747

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install go-model

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How do I copy my struct object into another? Not to worry, go-model does deep copy. I want to convert my struct into Map (map[string]interface{}). Sure, go-model does deep convert. I would like to clone my struct object. That's nice, you know go-model does deep processing. I want to check my struct object is empty or not. Of course, go-model does deep zero check. I want to check my struct object has any zero/empty value. Of course, go-model does deep zero check. Is it possible to check to particular fields has zero/empty values. Of-course you can. You wanna all the fields from struct, Yes you can have it :). go-model library provides an ability to know the reflect.Kind in as easy way. I want to get Go lang supported Tag value from my struct. Yes, it is easy to get it. I would like to get all the fields Tag values from my struct. It's easy. I want to get value by field name on my struct. Yes, it is easy to get it. I want to set value by field name on my struct. Yes, it is easy to get it. There are scenarios, where you want the object values but not to traverse/look inside the struct object. Use notraverse option in the model tag for those fields or Add it NoTraverseTypeList. Customize it as per your need. Default NoTraverseTypeList has these types time.Time{}, &time.Time{}, os.File{}, &os.File{}, http.Request{}, &http.Request{}, http.Response{}, &http.Response{}. This example registers a custom conversion from the int to the string type. If a an integer field on the source struct matches the name of a string field on the target struct, the provided Converter method is invoked. Note that if you want to register a converter from int to *string you will have to provide a pointer to a pointer as destination type ( (**string)(nil) ). More examples can be found in the AddConversion godoc.

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