initially developed for the 3D model viewer to make it possible to support more types of 3D models without requiring major changes to the KiCad source for each new model type supported. The plugin framework domain and therefore requires an interface unique to that domain. For example, the 3D model plugins load 3D model data from files and translate that data into a format which can be displayed by the 3D render this type of 3D model. In some cases a plugin may not yet provide a visual model and must return false. */ bool CanRender( void ); /* Load the specified model and return a pointer to

initially developed for the 3D model viewer to make it possible to support more types of 3D models without requiring major changes to the KiCad source for each new model supported. The plugin framework domain and therefore requires an interface unique to that domain. For example, the 3D model plugins load 3D model data from files and translate that data into a format which can be displayed by the 3D render this type of 3D model. In some cases a plugin may not yet provide a visual model and must return false. */ bool CanRender( void ); /* Load the specified model and return a pointer to

Contents: Installing and Testing Installing with git Running tests Optional dependencies Quickstart Model Definition Storing data Retrieving Data Closing the database Working with existing databases What example Diving into the code More examples Contributing Patches Bugs Questions Query Examples Model Definitions Schema Creation Basic Exercises Joins and Subqueries Modifying Data Aggregation Recursion Database Errors Logging queries Adding a new Database Driver Models and Fields Fields Creating model tables Model options and table metadata Indexes and Constraints Non-integer Primary Keys, Composite Keys

Installing with git Running tests Optional dependencies Skip Compilation of SQLite Extensions Quickstart Model Definition Storing data Retrieving Data Closing the database Working with existing databases What Database Errors Logging queries Adding a new Database Driver Models and Fields Fields Creating model tables Model options and table metadata Indexes and Constraints Non-integer Primary Keys, Composite Keys Helper Security and SQL Injection API Documentation Database Query-builder Fields Schema Manager Model Query-builder Internals Constants and Helpers SQLite Extensions Getting started APIs Additional

Installing with git Running tests Optional dependencies Skip Compilation of SQLite Extensions Quickstart Model Definition Storing data Retrieving Data Closing the database Working with existing databases What example Diving into the code More examples Contributing Patches Bugs Questions Query Examples Model Definitions Schema Creation Basic Exercises Joins and Subqueries Modifying Data Aggregation Recursion queries Adding a new Database Driver Models and Fields Fields Field-naming conflicts Creating model tables Model options and table metadata Indexes and Constraints Non-integer Primary Keys, Composite Keys

Contents: Installing and Testing Installing with git Running tests Optional dependencies Quickstart Model Definition Storing data Retrieving Data Closing the database Working with existing databases What example Diving into the code More examples Contributing Patches Bugs Questions Query Examples Model Definitions Schema Creation Basic Exercises Joins and Subqueries Modifying Data Aggregation Recursion Database Errors Logging queries Adding a new Database Driver Models and Fields Fields Creating model tables Model options and table metadata Indexes and Constraints Non-integer Primary Keys, Composite Keys

additional components can be defined by the user. The worker is built up using “bootsteps” — a dependency graph enabling fine grained control of the worker’s internals. Framework Integration Celery is easy to then it must be the tasks responsibility to assert that, not the callers. Another gotcha is Django model objects. They shouldn’t be passed on as arguments to tasks. It’s almost always better to re-fetch an article and a task that automatically expands some abbreviations in it: class Article(models.Model): title = models.CharField() body = models.TextField() @app.task def expand_abbreviations(article):

additional components can be defined by the user. The worker is built up using “bootsteps” — a dependency graph enabling fine grained control of the worker’s internals. Framework Integration Celery is easy to then it must be the tasks responsibility to assert that, not the callers. Another gotcha is Django model objects. They shouldn’t be passed on as arguments to tasks. It’s almost always better to re-fetch an article and a task that automatically expands some abbreviations in it: class Article(models.Model): title = models.CharField() body = models.TextField() @app.task def expand_abbreviations(article):

additional components can be defined by the user. The worker is built up using “bootsteps” — a dependency graph enabling fine grained control of the worker’s internals. Framework Integration Celery is easy to then it must be the tasks responsibility to assert that, not the callers. Another gotcha is Django model objects. They shouldn’t be passed on as arguments to tasks. It’s almost always better to re-fetch an article and a task that automatically expands some abbreviations in it: class Article(models.Model): title = models.CharField() body = models.TextField() @app.task def expand_abbreviations(article):

additional components can be defined by the user. The worker is built up using “bootsteps” — a dependency graph enabling fine grained control of the worker’s internals. Framework Integration Celery is easy to then it must be the tasks responsibility to assert that, not the callers. Another gotcha is Django model objects. They shouldn’t be passed on as arguments to tasks. It’s almost always better to re-fetch an article and a task that automatically expands some abbreviations in it: class Article(models.Model): title = models.CharField() body = models.TextField() @app.task def expand_abbreviations(article):