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素の SQL 文の実行 — Django 4.0.6 ドキュメント 14055: " + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... できます。以下のモデルについて考えてください: class Person ( models . Model ): first_name = models . CharFiel ... 以下のように独自の SQL を実行できます: >>> for p in Person . objects . raw ( 'SELECT * FROM myapp_person' ): ... very exciting -- it's exactly the same as running Person.objects.all() . However, raw() has a bunch of othe ... owerful. モデルのテーブル名称この例で示したモデル Person のテーブル名はどのようにして得られたのでしょうか? ...; https://man.plustar.jp/django/topics/db/sql.html - [similar]

モデル — Django 4.0.6 ドキュメント 11866: " + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... 簡単な例 ¶ 次の例では first_name と last_name を持つ Person というモデルを定義しています。 from django.db impo ... rt models class Person ( models . Model ): first_name = models . CharFiel ... 性はデータベースのカラムに関連付けられます。上記の Person モデルは以下のようなデータベースのテーブルを作成し ... ます: CREATE TABLE myapp_person ( "id" serial NOT NULL PRIMARY KEY , "first_name" ...; https://man.plustar.jp/django/topics/db/models.html - [similar]

Django オブジェクトのシリアル化 — Django 4.0.6 ドキュメント 9973: " + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... ing two models: from django.db import models class Person ( models . Model ): first_name = models . CharFiel ... max_length = 100 ) author = models . ForeignKey ( Person , on_delete = models . CASCADE ) Ordinarily, seria ... ctable. However, if we add natural key handling to Person, the fixture becomes much more humane. To add natu ... ral key handling, you define a default Manager for Person with a get_by_natural_key() method. In the case of ...; https://man.plustar.jp/django/topics/serialization.html - [similar]

Organization of the Django Project — Django 4.0.6 ドキュメント 9677: " + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... lowing restrictions apply to the role of Merger: A person must not simultaneously serve as a member of the t ... pon taking up membership in the technical board. A person may serve in the roles of Releaser and Merger simu ... ical board deems it necessary to select additional persons for such a role, occur as follows: Any member in ... t of the DSF's Fellowship committee, may suggest a person for consideration. The technical board considers t ...; https://man.plustar.jp/django/internals/organization.html - [similar]

Django Utils — Django 4.0.6 ドキュメント 9397: " + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... ght invoke the method once more: # the model class Person ( models . Model ): def friends ( self ): # expens ... e computation ... return friends # in the view: if person . friends (): ... And in the template you would ha ... ve: {% for friend in person.friends %} Here, friends() will be called twice. S ... ince the instance person in the view and the template are the same, decorat ...; https://man.plustar.jp/django/ref/utils.html - [similar]

マネージャ — Django 4.0.6 ドキュメント 9216: " + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... ように書きます。 from django.db import models class Person ( models . Model ): #... people = models . Manager ... () このモデル例を使うと、 Person.objects は AttributeError 例外を起こしますが、 Per ... son.people.all() と書けば、すべての Person オブジェクトのリストが得られます。マネージャのカス ... () . get_queryset () . filter ( role = 'E' ) class Person ( models . Model ): first_name = models . CharFiel ...; https://man.plustar.jp/django/topics/db/managers.html - [similar]

Django の admin サイト — Django 4.0.6 ドキュメント 8936: " + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... Reader , Editor , site = custom_admin_site ) class PersonAdmin ( admin . ModelAdmin ): pass You can't use th ... l admin class in its __init__() method, e.g. super(PersonAdmin, self).__init__(*args, **kwargs) . You can us ... ango.contrib import admin from myapp.models import Person class PersonForm ( forms . ModelForm ): class Meta ... : model = Person exclude = [ 'name' ] class PersonAdmin ( admin . M ...; https://man.plustar.jp/django/ref/contrib/admin/index.html - [similar]

How to provide initial data for models — Django 4.0.6 ドキュメント 8591: " + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... As an example, though, here's what a fixture for a Person model might look like in JSON: [ { "model" : "myap ... p.person" , "pk" : 1 , "fields" : { "first_name" : "John" , ... "last_name" : "Lennon" } }, { "model" : "myapp.person" , "pk" : 2 , "fields" : { "first_name" : "Paul" , ... ィクスチャだと以下のようになります: - model : myapp.person pk : 1 fields : first_name : John last_name : Lenn ...; https://man.plustar.jp/django/howto/initial-data.html - [similar]

QuerySet API リファレンス — Django 4.0.6 ドキュメント 8294: " + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... ls class City ( models . Model ): # ... pass class Person ( models . Model ): # ... hometown = models . Fore ... ls . Model ): # ... author = models . ForeignKey ( Person , on_delete = models . CASCADE ) ... then a call t ... uthor__hometown').get(id=4) will cache the related Person and the related City : # Hits the database with jo ... erysets are the same, in terms of deferred fields: Person . objects . defer ( "age" , "biography" ) Person . ...; https://man.plustar.jp/django/ref/models/querysets.html - [similar]

Coding style — Django 4.0.6 ドキュメント 8064: " + tagname + " "); } }); $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { va ... g underscores instead of camelCase. Do this: class Person ( models . Model ): first_name = models . CharFiel ... CharField ( max_length = 40 ) Don't do this: class Person ( models . Model ): FirstName = models . CharField ... he fields and the class definition. Do this: class Person ( models . Model ): first_name = models . CharFiel ... erbose_name_plural = 'people' Don't do this: class Person ( models . Model ): first_name = models . CharFiel ...; https://man.plustar.jp/django/internals/contributing/writing-code/coding-style.h... - [similar]

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