{"id":1112,"date":"2019-05-14T23:22:59","date_gmt":"2019-05-14T14:22:59","guid":{"rendered":"https:\/\/www.nblog09.com\/w\/?p=1112"},"modified":"2021-11-11T17:44:46","modified_gmt":"2021-11-11T08:44:46","slug":"django-field","status":"publish","type":"post","link":"https:\/\/www.nblog09.com\/w\/2019\/05\/14\/django-field\/","title":{"rendered":"Django\u306e\u30e2\u30c7\u30eb\u306e\u5404\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u3064\u3044\u3066\u89e3\u8aac\uff08AutoField, BigAutoField, BooleanField, CharField, TextField, DateField, EmailField, IntegerField\uff09"},"content":{"rendered":"

Django\u306eModel\u306eField\u306b\u3064\u3044\u3066\u3053\u3053\u3067\u306f\u3001\u305d\u306e\u4e2d\u3067\u3082\u7279\u306b\u3088\u304f\u4f7f\u3046\u4ee3\u8868\u7684\u306a\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u3064\u3044\u3066\u5229\u7528\u65b9\u6cd5\u306e\u8a73\u7d30\u3092\u307e\u3068\u3081\u307e\u3057\u305f\u3002\u305d\u306e\u4ed6\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u3064\u3044\u3066\u3082\u5f8c\u65e5\u307e\u3068\u3081\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

AutoField, BigAutoField<\/h2>\n\n\n\n\n\n
\u30d5\u30a3\u30fc\u30eb\u30c9\u540d<\/td>\n\u6982\u8981<\/td>\nDB\u3067\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30ab\u30e9\u30e0\u5b9a\u7fa9(sqlite)<\/td>\n<\/tr>\n
AutoField<\/td>\n\u81ea\u52d5\u7684\u306b\u9023\u756a\u304c\u632f\u3089\u308c\u308bInterField\u3002PrimaryKey\u306f\u6307\u5b9a\u3059\u308b\u3088\u3046\u306b\u5b9a\u7fa9\u3059\u308b\u3002<\/td>\nInteger NOT NULL primary key AUTOINCREMENT<\/td>\n<\/tr>\n
BigAutoField<\/td>\nAutoField\u3068\u540c\u69d8\u306e\u81ea\u52d5\u9023\u756a\u3055\u308c\u308bIntegerField\u3002
\n64bit\u306einteger\u30671 -\u00a09223372036854775807\u307e\u3067\u306e\u5024\u304c\u632f\u3089\u308c\u308b\u3002
\nPrimaryKey\u306f\u6307\u5b9a\u3059\u308b\u3088\u3046\u306b\u5b9a\u7fa9\u3059\u308b\u3002<\/td>\n		Integer NOT NULL primary key AUTOINCREMENT<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u307e\u305f\u3001primary_key=True\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u306a\u3044\u3068\"Model %s can't have more than one AutoField\"<\/strong>\u3068\u30a8\u30e9\u30fc\u304c\u51fa\u3066\u3057\u307e\u3046\u306e\u3067\u3001\u5fc5\u305aprimary_key=True\u3092\u3064\u3051\u307e\u3057\u3087\u3046\u3002<\/p>\n

\u3069\u3061\u3089\u3082\u3001\u591a\u304f\u306fid\u306a\u3069\u306ePK\u306b\u5229\u7528\u3055\u308c\u30b3\u30fc\u30c9\u4e0a\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n

\n

id = models.AutoField(primary_key=True)
\nid = models.BigAutoField(primary_key=True)<\/p>\n<\/div>\n

<\/div>\n

BooleanField<\/h2>\n\n\n\n\n
\u30d5\u30a3\u30fc\u30eb\u30c9\u540d<\/td>\n\u6982\u8981<\/td>\nDB\u3067\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30ab\u30e9\u30e0\u5b9a\u7fa9(sqlite)<\/td>\n<\/tr>\n
BooleanField<\/td>\n\u771f\u507d\u5024\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3002
\n\u30c1\u30a7\u30c3\u30af\u30dc\u30c3\u30af\u30b9\u306a\u3069\u306b\u5229\u7528\u3055\u308c\u308b\u3002<\/td>\n		bool NOT NULL<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

NOT NULL\u306a\u306e\u3067default\u3092\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059(\u3082\u3057\u304f\u306f\u3001null=True\u3068\u3059\u308b\u304b)<\/p>\n

default\u3092\u8a2d\u5b9a\u3092\u3057\u306a\u3044\u3068\u3001\"You are trying to change the nullable field \"<\/strong>\u3068\u805e\u304b\u308c\u3001default\u306e\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u304b\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u9078\u3070\u3055\u308c\u307e\u3059\u3002<\/p>\n

is_deleted,\u3000active\u306a\u3069\u30d5\u30e9\u30b0\u7cfb\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n

\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n

\n

active = models.BooleanField(default=True)
\n# \u5024\u304c\u306a\u3044\u5834\u5408\u306fTrue\u304c\u683c\u7d0d\u3055\u308c\u308b<\/p>\n

active = models.BooleanField(null=True)
\n# \u5024\u304c\u306a\u3044\u5834\u5408NULL\u304c\u683c\u7d0d\u3055\u308c\u308b<\/p>\n<\/div>\n

CharField<\/h2>\n\n\n\n\n
\u30d5\u30a3\u30fc\u30eb\u30c9\u540d<\/td>\n\u6982\u8981<\/td>\nDB\u3067\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30ab\u30e9\u30e0\u5b9a\u7fa9(sqlite)<\/td>\n<\/tr>\n
CharField<\/td>\n\u6587\u5b57\u5217\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3002\u5927\u304d\u3044\u6587\u5b57\u5217\u306fTextField\u306b\u5165\u308c\u308b\u3002max_length\u3092\u8a2d\u5b9a\u3057\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044\u3002<\/td>\nvarchar(max_length)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

max_length\u3092\u8a2d\u5b9a\u3092\u3057\u306a\u3044\u5834\u5408\u3001\"CharFields must define a 'max_length' attribute.\"<\/strong>\u3068\u30a8\u30e9\u30fc\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/span><\/p>\n

\u4e00\u822c\u7684\u306a\u6587\u5b57\u5217\u306e\u30ab\u30e9\u30e0\u306b\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n

\n

title = models.CharField(max_length=256)
\n# max_length\u3092\u5b9a\u7fa9\u3059\u308b<\/p>\n<\/div>\n

TextField<\/h2>\n\n\n\n\n
\u30d5\u30a3\u30fc\u30eb\u30c9\u540d<\/td>\n\u6982\u8981<\/td>\nDB\u3067\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30ab\u30e9\u30e0\u5b9a\u7fa9(sqlite)<\/td>\n<\/tr>\n
TextField<\/td>\n\u5927\u304d\u306a\u6587\u5b57\u5217\u306e\u683c\u7d0d\u306b\u5229\u7528\u3055\u308c\u308b\u30d5\u30a3\u30fc\u30eb\u30c9\u3002TextArea\u3067\u5229\u7528\u3055\u308c\u308b\u3002max_length\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u306f\u306a\u3044<\/td>\ntext<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n

\n

content = models.TextField()<\/p>\n<\/div>\n

DateField, DateTimeField<\/h2>\n\n\n\n\n\n
\u30d5\u30a3\u30fc\u30eb\u30c9\u540d<\/td>\n\u6982\u8981<\/td>\nDB\u3067\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30ab\u30e9\u30e0\u5b9a\u7fa9(sqlite)<\/td>\n<\/tr>\n
DateField<\/td>\nDatetime.date\u3092\u4fdd\u5b58\u3059\u308b\u3002\u4ee5\u4e0b\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u8a2d\u5b9a\u3067\u304d\u308b\u3002
\nForm\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8\u306fTextInput\u3067\u3059\u3002
\nadmin\u30da\u30fc\u30b8\u306b\u306fjavascript\u306e\u30ab\u30ec\u30f3\u30c0\u30fc\u3068\u73fe\u5728\u65e5\u4ed8\u3092\u81ea\u52d5\u3067\u5165\u308c\u308b\u30dc\u30bf\u30f3\u304c\u8868\u793a\u3055\u308c\u308b\u3002<\/td>\n		date not null<\/td>\n<\/tr>\n
DateTimeField<\/td>\n\u65e5\u6642\u3092\u4fdd\u5b58\u3059\u308b\u30d5\u30a3\u30fc\u30eb\u30c9\u3067\u3059\u3002python\u306edatetime.datetime\u3067\u3042\u3089\u308f\u3055\u308c\u307e\u3059\u3002
\nForm\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8\u306fTextInput\u3002admin\u30da\u30fc\u30b8\u306b\u306f2\u3064\u306eTextInput\u306e\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8\u304c\u3042\u308b\u3002<\/td>\n		datetime not null<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u5f15\u6570\u306b\u306f\u4ee5\u4e0b\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u304c\u5229\u7528\u3055\u308c\u307e\u3059<\/p>\n

autonow<\/strong>: \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u4fdd\u5b58\u3055\u308c\u308b(update)\u5ea6\u306b\u81ea\u52d5\u7684\u306b\u73fe\u5728\u6642\u523b\u306b\u66f4\u65b0\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u8a2d\u5b9a\u3057\u305f\u5834\u5408\u306b\u306fModel.save()\u5b9f\u884c\u6642\u306b\u306f\u81ea\u52d5\u66f4\u65b0\u3055\u308c\u307e\u3059\u304c\u3001Queryset.update()\u306a\u3069\u3067\u4ed6\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u66f4\u65b0\u3057\u305f\u5834\u5408\u306b\u306f\u81ea\u52d5\u66f4\u65b0\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n

auto_now_add:<\/strong>\u00a0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u633f\u5165\u3055\u308c\u308b(insert)\u5ea6\u306b\u3001\u81ea\u52d5\u7684\u306b\u73fe\u5728\u6642\u523b\u3067\u66f4\u65b0\u3055\u308c\u307e\u3059\u3002<\/p>\n

default\u306e\u5024\u306f\u3001<\/p>\n

DateField: datetime.date.today()
\nDateTimeField: django.utils.timezone.now()<\/p>\n

\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n

\n

update_date = models.DateField(auto_now=True)
\ninserted_date = models.DateField(auto_now=True)<\/p>\n

updated_at = models.DateTimeField(auto_now=True)
\ninserted_at = models.DateTimeField(auto_now_add=True)\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n

<\/div>\n

EmailField<\/h2>\n\n\n\n\n
\u30d5\u30a3\u30fc\u30eb\u30c9\u540d<\/td>\n\u6982\u8981<\/td>\nDB\u3067\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30ab\u30e9\u30e0\u5b9a\u7fa9(sqlite)<\/td>\n<\/tr>\n
EmailField<\/td>\n\u4fdd\u5b58\u3059\u308b\u5024\u304cEmail\u30a2\u30c9\u30ec\u30b9\u3067\u5229\u7528\u3067\u304d\u308b\u5f62\u5f0f\u304b\u3069\u3046\u304b\u30c1\u30a7\u30c3\u30af\u3059\u308b\u6a5f\u80fd(EmailValidator)\u3092\u6301\u3063\u305fCharField<\/td>\nvarchar<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4f5c\u6210\u306b\u306fmax_length\u3092\u8a2d\u5b9a\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n

\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n

\n

email = models.EmailField(max_length=240)<\/p>\n<\/div>\n

IntegerField<\/h2>\n\n\n\n\n
\u30d5\u30a3\u30fc\u30eb\u30c9\u540d<\/td>\n\u6982\u8981<\/td>\nDB\u3067\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30ab\u30e9\u30e0\u5b9a\u7fa9(sqlite)<\/td>\n<\/tr>\n
IntegerField<\/td>\n-2147483648 to 2147483647\u306e\u5024\u306e\u6574\u6570\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3002
\nForm\u4e0a\u306e\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8\u306flocalize\u3092False\u306b\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u306fNumberInput,\u305d\u308c\u4ee5\u5916\u306fTextInput<\/td>\n		Integer NOT NULL<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n

\n

age = models.IntegerField(default=0)<\/p>\n<\/div>\n

<\/div>\n","protected":false},"excerpt":{"rendered":"

Django\u306eModel\u306eField\u306b\u3064\u3044\u3066\u3053\u3053\u3067\u306f\u3001\u305d\u306e\u4e2d\u3067\u3082\u7279\u306b\u3088\u304f\u4f7f\u3046\u4ee3\u8868\u7684\u306a\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u3064\u3044\u3066\u5229\u7528\u65b9\u6cd5\u306e\u8a73\u7d30\u3092\u307e\u3068\u3081\u307e\u3057\u305f\u3002\u305d\u306e\u4ed6\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u3064\u3044\u3066\u3082\u5f8c\u65e5\u307e\u3068\u3081\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002 AutoField, BigAu […]<\/p>\n","protected":false},"author":1,"featured_media":1119,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_uag_custom_page_level_css":"","_uf_show_specific_survey":0,"_uf_disable_surveys":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[121],"tags":[182,183,184,185,187,188,122,190,191,130,14,189,186],"class_list":{"0":"post-1112","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-django","8":"tag-autofield","9":"tag-bigautofield","10":"tag-booleanfield","11":"tag-charfield","12":"tag-datefield","13":"tag-datetimefield","14":"tag-django","15":"tag-emailfield","16":"tag-integerfield","17":"tag-model","18":"tag-python","19":"tag-slugfield","20":"tag-textfield","21":"entry"},"uagb_featured_image_src":{"full":["https:\/\/www.nblog09.com\/w\/wp-content\/uploads\/2019\/05\/nature-213364__480.jpg",724,480,false],"thumbnail":["https:\/\/www.nblog09.com\/w\/wp-content\/uploads\/2019\/05\/nature-213364__480-150x150.jpg",150,150,true],"medium":["https:\/\/www.nblog09.com\/w\/wp-content\/uploads\/2019\/05\/nature-213364__480-300x199.jpg",300,199,true],"medium_large":["https:\/\/www.nblog09.com\/w\/wp-content\/uploads\/2019\/05\/nature-213364__480.jpg",724,480,false],"large":["https:\/\/www.nblog09.com\/w\/wp-content\/uploads\/2019\/05\/nature-213364__480.jpg",724,480,false],"1536x1536":["https:\/\/www.nblog09.com\/w\/wp-content\/uploads\/2019\/05\/nature-213364__480.jpg",724,480,false],"2048x2048":["https:\/\/www.nblog09.com\/w\/wp-content\/uploads\/2019\/05\/nature-213364__480.jpg",724,480,false],"home-middle":["https:\/\/www.nblog09.com\/w\/wp-content\/uploads\/2019\/05\/nature-213364__480.jpg",528,350,false],"home-top":["https:\/\/www.nblog09.com\/w\/wp-content\/uploads\/2019\/05\/nature-213364__480.jpg",634,420,false],"sidebar-thumbnail":["https:\/\/www.nblog09.com\/w\/wp-content\/uploads\/2019\/05\/nature-213364__480.jpg",100,66,false]},"uagb_author_info":{"display_name":"9nmatsumoto","author_link":"https:\/\/www.nblog09.com\/w\/author\/9nmatsumoto\/"},"uagb_comment_info":3,"uagb_excerpt":"Django\u306eModel\u306eField\u306b\u3064\u3044\u3066\u3053\u3053\u3067\u306f\u3001\u305d\u306e\u4e2d\u3067\u3082\u7279\u306b\u3088\u304f\u4f7f\u3046\u4ee3\u8868\u7684\u306a\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u3064\u3044\u3066\u5229\u7528\u65b9\u6cd5…","_links":{"self":[{"href":"https:\/\/www.nblog09.com\/w\/wp-json\/wp\/v2\/posts\/1112","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nblog09.com\/w\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nblog09.com\/w\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nblog09.com\/w\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nblog09.com\/w\/wp-json\/wp\/v2\/comments?post=1112"}],"version-history":[{"count":12,"href":"https:\/\/www.nblog09.com\/w\/wp-json\/wp\/v2\/posts\/1112\/revisions"}],"predecessor-version":[{"id":3805,"href":"https:\/\/www.nblog09.com\/w\/wp-json\/wp\/v2\/posts\/1112\/revisions\/3805"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nblog09.com\/w\/wp-json\/wp\/v2\/media\/1119"}],"wp:attachment":[{"href":"https:\/\/www.nblog09.com\/w\/wp-json\/wp\/v2\/media?parent=1112"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nblog09.com\/w\/wp-json\/wp\/v2\/categories?post=1112"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nblog09.com\/w\/wp-json\/wp\/v2\/tags?post=1112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}