django field types

attribute, and the range of values [-32768, 32767] is secure for the database that Django supports.22, TextFieldText type23, TimefieldTime, corresponding to Python's datetime.time24, UrlfieldThe string that stores the URL, the default length of 200;verify_exists (True), checks for URL availability.25,Filepathfield Class Filepathfield (path=none[, Match=none, Recursive=false, max_length=100, **options]) are similar to Charfield,However, the value is l

[Reprinted] Use signals to monitor the changes in the Django model object field value, django Field Reprinted Source: http://blog.csdn.net/pushiqiang/article/details/74949465 The function of the Django signal (Signals) is similar to the action of WordPress. It is used to ad

This article describes how to use a django custom Field to store strings separated by commas (,). For more information about how to store strings separated by commas (,) in a Field, see, returns a list. The code is as follows: From django import formsFrom django. db import

applies to modifyingALTER TABLE ' table_name ' change ' column_name ' column_name ' type (longth) UNSIGNED null DEFAULT null COMMENT ' comment ' 7. Adjust the order of the fields:ALTER TABLE table nameChange field name new field FirstName type default after field name (after which field is skipped)Example:

table change before field names modified field name int (one) not NULL,Change before field names modified field name int (one) not NULL,Change before field names modified field name int (one) not NULL,Change before

Implements a comma-delimited string that is stored in a field, returning a corresponding list The code is as follows: From Django Import formsFrom django.db import ModelsFrom Django.utils.text import CapfirstFrom Django.core Import exceptions Class Multiselectformfield (forms. Multiplechoicefield):Widget = forms. Checkboxselectmultiple def __init__ (self, *args, **kwargs):Self.max_choices = Kwargs.pop ('

Enables you to store a comma-delimited string in a field, returning a corresponding list Copy Code code as follows: From Django Import forms From django.db import Models From Django.utils.text import Capfirst From Django.core Import exceptions Class Multiselectformfield (forms. Multiplechoicefield):Widget = forms. Checkboxselectmultiple def __init__ (self, *args, **kwargs):Self.max_cho

field type (types) Autofield It is a self-growing Integerfield field based on ID. Typically, you do not have to use the field directly. If you don't specify a primary key on another field, Django will automatically add the primar

--oracle See all of the user's table names, table comments, field names, field comments, empty, field type SELECT DISTINCT table_column.*, table_nallable. Data_type, table_nallable. NULLABLE from (SELECT DISTINCT Utc.table_name table_name, utc.comments table_comments, Ucc.column_name column_name, ucc.comments column_comments from User_tab _

unique_for_month-> Index by month unique_for_year-> indexed by year auto_now -> when created, automatically generate time auto_now_add -> update is automatically updated to the current time choices- >djangoadmin in the drop-down box to avoidNon-connected table query blank-> Whether the djangoadmin can be empty verbose_name->django Admin Display Field Chinese editable->

it works well with other parts of Django. In the administrative tool, if you leave a character field blank, it inserts an empty string (and * not *null) for this purpose. However, there are exceptions to other data types: date, time, and numeric fields do not accept empty strings. If you try to insert an empty string into a date or integer

About the json field encoding of django model S, djangojson The encoder of the json field of django model cannot effectively encode data types such as uuid and datetime. When an object of this type is directly stored in the json field