Having a backend written in Python is really useful for several reasons, among which are:
Overshadowed by more popular frameworks like as Node/Express and Ruby on Rails, Python is often overlooked as a web server choice for most developers. It’s used for the simplest of scripts to complex machine learning and neural network training algorithms.īut perhaps the less-known usage of Python is its use as a web server. It’s considered to be a staple of modern development. On your form_post method, you can also return None, or a Flask response to render a custom template or redirect the user.Python is an incredibly versatile language. Use form_post to post process the form after the user submits it, you can save the data to database, send an email You can use form_get to prefill the form with your data, and/or pre process something on your application, then Implement form_get and form_post to implement your form pre-processing and post-processing. Now define your form view to expose urls, create a menu entry, create security accesses, define pre and post processing. Inside it create a file name ‘method3.html’ġ - Develop your template (on your /app/templates/method3.html):įrom wtforms import Form, StringField from wtforms.validators import DataRequired from flask_appbuilder.fieldwidgets import BS3TextFieldWidget from flask_appbuilder.forms import DynamicForm class MyForm ( DynamicForm ): field1 = StringField (( 'Field1' ), description = ( 'Your field number one!' ), validators =, widget = BS3TextFieldWidget ()) field2 = StringField (( 'Field2' ), description = ( 'Your field number two!' ), widget = BS3TextFieldWidget ()) Under your project’s directory and app folder create a folder named ‘templates’. It’s easy to render your method’s response integrated with the app’s look and feel,įor this you have to create your own template.
Notice that these methods will render simple pages not integrated with F.A.B’s look and feel. Permissions will be associated to a role, and roles are associated to users.īy default the permission’s name is the methods name. Use this decorator to enable granular security permissions to your methods. Use this decorator to expose views on your view classes. Take a look at their definition: flask_appbuilder.baseviews. You can find this example on SimpleView2. add_link ( "Method2", href = '/myview/method2/john', category = 'My View' ) add_view ( MyView, "Method1", category = 'My View' ) appbuilder. Edit views.py file and add:įrom flask_appbuilder import AppBuilder, BaseView, expose, has_access from app import appbuilder class MyView ( BaseView ): default_view = 'method1' ( '/method1/' ) def method1 ( self ): # do something with param1 # and return to previous page or index return 'Hello' ( '/method2/' ) def method2 ( self, param1 ): # do something with param1 # and render template with param param1 = 'Goodbye %s ' % ( param1 ) return param1 appbuilder. Using the Flask-AppBuilder-Skeleton (take a look at the Installation chapter). You can use this kind of view to implement your own custom pages,Īttach it to a menu or link it from any point to your site.ĭecorate your url routing methods with add decorator to tell flask that this is a security protected method. Its constructor will register your exposed urls on flask as a Blueprint,Īs well as all security permissions that need to be defined and protected. The views documented on this chapter are the building blocks of F.A.B, but the juicy part is on the next chapter (take a look at Security for more detail). So your methods will have automatic routing points much like Flask, but this time in a class.Īdditionally you can have granular security (method access security) that can be associated with a user’s role You will map your methods to routing points, and each method will be registeredĪs a possible security permission if you want. They work like a class that represent a concept and present the views and methods to implement it.Įach view is a Flask blueprint that will be created for you automatically by the framework.
#Flask app builder routes edit view registration#
Using JMESPath to map user registration role.reset-password - Resets a user’s password.
#Flask app builder routes edit view upgrade#
upgrade-db - Upgrade your database after F.A.B.babel-extract - Babel, Extracts and updates all messages.