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Web2py USES {{...}} tag to escape python code EMBEDDED in HTML.

Web2py uses {{...}} tag to escape python code embedded in HTML.

We can delete the records by using FOLLOWING CODE:

crud.delete(db.table name, ID)

We can delete the records by using following code:

crud.delete(db.table name, id)

Niginx is a FREE, open-source WEB server. It is USED to CONFIGURE file.

Niginx is a free, open-source web server. It is used to configure file.

WEB2PY was WRITTEN in PYTHON LANGUAGE.

Web2py was written in Python language.

The FOLLOWING code is used to send SMS:

from gluon.contrib.sms utils

import SMS CODES, sms email

email = sms_email('1 (111) 111-1111','T-Mobile USA (abc)')

mail.send(to = email, subject = 'test', message = 'test')

The following code is used to send SMS:

from gluon.contrib.sms utils

import SMS CODES, sms email

email = sms_email('1 (111) 111-1111','T-Mobile USA (abc)')

mail.send(to = email, subject = 'test', message = 'test')

<P>Yes, by USING command LINE.

EXAMPLE: python web2py.py -a 'your password' -i 127.0.0.1 -p 8000

Yes, by using command line.

Example: python web2py.py -a 'your password' -i 127.0.0.1 -p 8000

In Web2py, Migration is USED to disable all the table.

Example: DB = DAL(..., migrate enabled=False)

In Web2py, Migration is used to disable all the table.

Example: db = DAL(..., migrate enabled=False)

DAL OBJECT is USED to represents a database connection.

Example: DB = DAL('sqlite://storage.sqlite')

DAL object is used to represents a database connection.

Example: db = DAL('sqlite://storage.sqlite')

YES, WEB2PY SUPPORTS MULTIPLE DATABASE.

Yes, Web2py supports multiple database.

There are VARIOUS protocols USED in Web2py:

XML

JSON

RSS

CVC

SOAP etc.

There are various protocols used in Web2py:

XML

JSON

RSS

CVC

SOAP etc.

In WEB2PY, mail.SEND() METHOD is USED to send an EMAIL.

In Web2py, mail.send() method is used to send an email.

In Web2py, RBAC STANDS for Role Based Access Control. It is an approach to restricting system access to authorized USED.

In Web2py, RBAC stands for Role Based Access Control. It is an approach to restricting system access to authorized used.

In Web2py, CRON GIVES the ability to RUN the task within the specified INTERVAL of the time.

In Web2py, CRON gives the ability to run the task within the specified interval of the time.

There are various I/O functions in Web2py that are given below:

open(): It HELPS to open a FILE or document

WRITE(): It helps to write a string in file or document

read(): It helps to read the content in existing file

close(): This method CLOSES the file object.

There are various I/O functions in Web2py that are given below:

open(): It helps to open a file or document

write(): It helps to write a string in file or document

read(): It helps to read the content in existing file

close(): This method closes the file object.

WEB2PY features are:

• It is EASY to LEARN.
• It is portable.
• It has standard library that SUPPORTS many TASK.

Web2py features are:

Web2py workflow are given below :

• The web server manages HTTP requests simultaneously in its own thread.
• The HTTP request header is passed to the dispatcher.
• The dispatcher manages the APPLICATION requests and map the PATH_INFO in the URL of the function call. EVERY function call is represented in the URL.
• All the requests for files included in the STATIC folder are managed directly, and large file are streamed to the client.
• Requests for anything but a static file are mapped into an action.
• If the request header contains a session cookie for the app, the session object is retrieved; or else, a session id is created.
• If the action returns a value as string, this is RETURNED to the client.
• If the action returns an iterable, it is used to loop and stream the data to the client.

Web2py workflow are given below :

We can create a model by using FOLLOWING CODE :

db.define_table('company', Field('NAME', notnull = True, unique = True), format = '%(name)s')

db.define_table(

'CONTACT',

Field('name', notnull = True),

Field('company', 'reference company'),

Field('picture', 'upload'),

Field('email', requires = IS_EMAIL()),

Field('phone_number', requires = IS_MATCH('[d-() ]+')),

Field('address'),

format = '%(name)s'

)

db.define_table(

'log',

Field('body', 'text', notnull = True),

Field('posted_on', 'datetime'),

Field('contact', 'reference contact')

) 

We can create a model by using following code :

db.define_table('company', Field('name', notnull = True, unique = True), format = '%(name)s')

db.define_table(

'contact',

Field('name', notnull = True),

Field('company', 'reference company'),

Field('picture', 'upload'),

Field('email', requires = IS_EMAIL()),

Field('phone_number', requires = IS_MATCH('[d-() ]+')),

Field('address'),

format = '%(name)s'

)

db.define_table(

'log',

Field('body', 'text', notnull = True),

Field('posted_on', 'datetime'),

Field('contact', 'reference contact')

) 

A better PATTERN in web2py is to submit forms to the same action, which generates them. This mechanism is called as "POSTBACK" which is the main FEATURE of web2py. In short, self-submission is achieved in postback.

A better pattern in web2py is to submit forms to the same action, which generates them. This mechanism is called as "postback" which is the main feature of web2py. In short, self-submission is achieved in postback.

WEB2PY DEFAULT PORT is 8000.

Web2py default port is 8000.

In Web2fy FRAMEWORK, gluon.tools.Mail class is used to send EMAIL. The mailer can be defined with this class.

from gluon.tools import Mail

mail = Mail()

mail.settings.server = 'smtp.example.com:25'

mail.settings.sender = 'abc@example.com'

mail.settings.login = 'username:password'

In Web2fy Framework, gluon.tools.Mail class is used to send email. The mailer can be defined with this class.

from gluon.tools import Mail

mail = Mail()

mail.settings.server = 'smtp.example.com:25'

mail.settings.sender = 'abc@example.com'

mail.settings.login = 'username:password'

Web2fy crud methods are :

Methods  Description

crud.tables() It RETURNS a LIST of tables which is defined in the database.

crud.create(db.tablename) It returns a create form for the table tablename.

crud.read(db.tablename, ID) It returns a read-only form for tablename and record id.

crud.delete(db.tablename, id) It is USED to deletes the record

crud.select(db.tablename, query) It returns a list of records SELECTED from the table

crud.search(db.tablename) Returns a tuple (form, records) where form is a search form

Web2fy crud methods are :

Methods  Description

crud.tables() It returns a list of tables which is defined in the database.

crud.create(db.tablename) It returns a create form for the table tablename.

crud.read(db.tablename, id) It returns a read-only form for tablename and record id.

crud.delete(db.tablename, id) It is used to deletes the record

crud.select(db.tablename, query) It returns a list of records selected from the table

crud.search(db.tablename) Returns a tuple (form, records) where form is a search form

WEB2PY SUPPORTS following DATABASES and their drivers:

Databases Drivers

SQLite sqlite3 or pysqlite2 or zxJDBC (on Jython)

PostgreSQL psycopg2 or pg8000 or zxJDBC (on Jython)

MySQL pymysql or MySQLdb

Oracle cx_Oracle

MSSQL pyodbc or pypyodbc

FireBird kinterbasdb or fdb or pyodbc

DB2 pyodbc

Informix informixdb

Ingres ingresdbi

Cubrid cubriddb

Web2py supports following databases and their drivers:

Databases Drivers

SQLite sqlite3 or pysqlite2 or zxJDBC (on Jython)

PostgreSQL psycopg2 or pg8000 or zxJDBC (on Jython)

MySQL pymysql or MySQLdb

Oracle cx_Oracle

MSSQL pyodbc or pypyodbc

FireBird kinterbasdb or fdb or pyodbc

DB2 pyodbc

Informix informixdb

Ingres ingresdbi

Cubrid cubriddb

Web2fy consists of the following components:

• Models: It represents data and database tables.
• VIEWS: It helps rendering the DISPLAY of the data.
• Controllers: It describes the application logic and workflow.
• Languages: describe how to translate strings in the application into various supported languages.
• Static files: Do not require processing (e.g. images, CSS style sheets etc).
• ABOUT and README: It provide DETAILS of the project.
• Errors: It stores ERROR reports generated by the application.
• Sessions: It stores information related to each particular user.
• Databases: It store SQLite databases and additional table information.
• Cache: It store cached application items.
• Modules: Modules are other optional Python modules.
• Private: It includes files are accessed by the controllers but not DIRECTLY by the developer.
• Uploads: Files are accessed by the models but not directly by the developer.

Web2fy consists of the following components:

Web2py STABLE version is 2.14.6 which is released on MAY 10, 2016.

Web2py stable version is 2.14.6 which is released on May 10, 2016.

MASSIMO DI Pierro DEVELOPED the AUTHOR of WEB2PY.

Massimo Di Pierro developed the author of Web2py.

We can WRITE a hello world program by USING following CODE:

DEF hello():

return 'Hello World'

We can write a hello world program by using following code:

def hello():

return 'Hello World'

WEB2PY supports various PROTOCOLS LIKE: XML, JSON, RSS, CSV, XMLRPC, JSON RPC, AND RPC, and SOAP.

Web2py supports various protocols like: XML, JSON, RSS, CSV, XMLRPC, JSON RPC, AND RPC, and SOAP.

We can INSTALL Web2fy in DIFFERENT operating SYSTEM by using following code:

Operation System : Unix and Linux,OS X,WINDOWS

Command : python web2py.py,OPEN web2py.app,web2py.exe

We can install Web2fy in different operating system by using following code:

Operation System : Unix and Linux,OS X,Windows

Command : python web2py.py,open web2py.app,web2py.exe

Web2py is an OPEN source web application FRAMEWORK. It is written in the PYTHON PROGRAMMING language. It allows web developers to DESIGN and develop dynamic web application.

Web2py is an open source web application framework. It is written in the Python programming language. It allows web developers to design and develop dynamic web application.