stringfield

With ORM, we can show the 3 tables required by the Web App in model: Import time, Uuidfrom transwarp.db import next_idfrom transwarp.orm import Model, Stringfield, Booleanfield, Floatfield, T Extfieldclass User (Model): __table__ = ' users ' id = Stringfield (primary_key=true, default=next_id, ddl= ' varchar ()) E Mail = Stringfield (updatable=false, ddl= ' v

result to a UTF-8-encoded string object. In practical development, it is recommended that you only define the __unicode__ () method and let Django handle the conversion of the string object if necessary.============ Translation End ==========================In flask, the definition of a data model for a article class can be written in the following notation:classarticle (db. Document): Title= db. Stringfield (max_length=255, required=True) Segtitle=

, InputRequired and StringField indicate two different data types. in addition to data, a domain also contains a large number of useful attributes, such as tags, descriptions, and List of verification errors.Each field has a Widget instance. the Widget is used to render the HTML representation of the field. you can specify a Widget instance for each domain, but each domain has a reasonable widget by default. some fields are simple and convenient. for

Basic tutorial on using the WTForms form framework in Python Flask, flaskwtforms Download and installThe simplest way to install WTForms is to use easy_install and pip: easy_install WTForms# orpip install WTForms You can manually download WTForms from PyPI and run python setup. py install. If you like all these risks, run the latest version from Git. You can get the package version of the latest change set, or go to the project homepage to clone the code repository. Main ConceptsThe Forms class

Mongoengine Basic Usage Examples: fromMongoengineImport* fromDatetimeImportdatetime#Connection database: Test#Connect (' Test ') # connects to local test databaseConnect'Test', host='127.0.0.1', port=27017, Username='Test', password='Test')#Defining our Documents#define document USER,POST, corresponding set User,postclassUser (Document):#required is true, the initial value must be givenemail = Stringfield (required=True) first_name=

Recently picked up Django, but Django does not support MongoDB, but there is a module mongoengine can implement the Django model similar encapsulation. But Mongoengine's Chinese documents are almost never Some is also a brief introduction and use. I'll share some of the notes I've recorded in the course of my use, which may be a bit messy. You can refer to it.Install Mongoengine Easy_install Pymongo # Dependent library Easy_install mongoengine Basic use From mongoengine Im

', username= ' root ', password= ' 1234 ') # define Category document class Categories (document): ' Inherit the document class, for normal document ' name = Stringfield (max_length=30, required=true) Artnum = Intfield (default=0, required=true) date = Datetimefield (default= DateTime.Now (), required=true) It's similar to the Django model, so it doesn't explain anything. Insert ? 1 2 Cate = Categories (name= "Linux") # I

mongoengine Action Note one This paper mainly describes the use of Mongoengine through Python3,flask, the establishment of data model: 1. Installing related libraries PIP3 install flask, Mongoengine 2. Introduction of Dependency From flask import flask from flask_mongoengine import mongoengine 3. Connect MONGO DB DB is the name of the database for which the connection is requested, the host is the database address, port is the ports used, and the login name and password can be set App = Flask

class Categories (Document):' inherits the Document class, for common documents 'name = StringField (max_length = 30, required = True) artnum = IntField (default = 0, required = True) date = DateTimeField (default = datetime. now (), required = True) It is similar to Django's model, so it does not explain anything.Insert Cate = Categories (name = "Linux") # if required is True, the initial value must be assigned. if default is available, the defaul

local blog Database # If you need to verify and specify the Host Name # Connect ('blog ', host = '192. 168.3.1', username = 'root', password = '123 ') # Defining classification documents Class Categories (Document ): 'Inherit the Document class, which is a common document' Name = StringField (max_length = 30, required = True) Artnum = IntField (default = 0, required = True) Date = DateTimeField (default = datetime. now (), required = True)

Chinese documents for the engine, and some of them are short introductions and usage. next I will share some of my notes recorded during use, which may be a bit messy. for more information, see.Install external Engine Easy_install pymongo # dependent library easy_install external Engine Basic usage From external engine import * from datetime import datetime # connect to database connect ('blog ') # connect to local blog database # If you need to verify and specify the host name # connect ('bl

Tutorial on using external engine to operate MongoDB in Python, using enginemongodb Recently, Django was picked up again, but Django does not support mongodb. However, there is a module, the runtime engine, which can implement similar encapsulation of Django Model. however, there are almost no Chinese documents for the engine, and some of them are short introductions and usage. next I will share some of my notes recorded during use, which may be a bit messy. for more information, see.Install ext

deal, and use a field (ParentID) to associate deal with the POI when establishing deal document, in this case the ParentID field is created, It is stored in the deal corresponding to the poiid, it can be simply regarded as a foreign key.public static document Createpoidocument (Poimsg poimsg) { Document document = new document (); Document.add (New Stringfield ("Poiid", String.valueof (Poimsg.getid ()), Field.Store.YES)); Document.add (New

With the ORM, we can represent the 3 tables required by the Web App Model :Import time, UUIDFrom ORMImport Model, Stringfield, Booleanfield, Floatfield, TextFieldDefnext_id():Return'%015d%s000 '% (int (time.time () *(), Uuid.uuid4 (). hex)ClassUser(Model): __table__ =' users ' id = Stringfield (primary_key=True, default=next_id, ddl=' varchar ') email = Stringfield