- #Php generator for mysql get database value how to#
- #Php generator for mysql get database value code#
You will probably never use the map classes directly, but Propel needs Propel also generates one TableMap class for each table under the Map/ĭirectory. These classes are generated only once by Propel on the other hand, the base classes they extend are overwritten every time you call the model:build command, and that happens a lot in the course of a project, because the schema evolves with your needs. This is where you will add your own model code. These empty classes are called stub classes. * Skeleton subclass for representing a row from the 'book' table. Here’s a minimal example configuration file for MySQL, for each supported format See the configuration chapter of the documentation, for a detailed description.
ext stands for “one of the supported extensions” and stored at the same level as the schema.xml, or in a subdirectory named conf or config. Propel expects the configuration to be stored in a file called propel.ext, where. Of course, Propel provides sensible defaults, so that you actually need to define only two settings for the build process to start: the RDBMS you are going to use, and a name for your project.
Whether you need the generated classes to inherit one of your classes rather than Propel’s base classes, or to enable/disable some methods in the generated classes, pretty much every customization is possible. The build process is highly customizable. Building The Model Setting Up Configuration Together with a DTD and a XSD schema for its validation. Propel’s documentation provides a complete reference of the schema syntax, There are many more attributes and elements available to describe a datamodel. The refPhpName defines the name of the relation as seen from the foreign table. By default, Propel uses the phpName of the foreign table as the phpName of the relation. Just like a table or a column, a relationship has a phpName. Each tag consists of one or more mappings between a local column and a foreign column.Ī foreign key represents a relationship. Foreign KeysĪ table can have several tags, describing foreign keys to foreign tables. Generated PHP classes for this table will use this namespace. Tip If you specify a namespace attribute in a element, the Check the schema reference for moreĪs for the other column attributes, required, primaryKey, and autoIncrement, they mean exactly what their names imply.
#Php generator for mysql get database value how to#
But Propel knows how to map the schema types with SQL
The XML schema is database agnostic, so theĬolumn types and attributes are probably not exactly the same as the ones you Once again, the Propel default behavior is to use a CamelCase version of the name as phpName when not specified.Įach column also requires a type. The root tag of the XML schema is the tag:Įach column has a name (the one used by the database), and an optional phpName attribute. Database Connection NameĬreate a file called schema.xml in the new bookstore/ directory. To describe any excluded tables inside yourĬonfiguration file). Schema syntax closely follows the actual structure of the database (you have This “schema” uses XML to describe tables, columns and relationships. Propel generates PHP classes based on a relational description of your data The Hard Way Describing Your Database as XML Schema Learn more about the Propel structure and API setting up your project the hard way. That the command line approach is just here to simplify the process. There’s actually two ways to setup the build configuration the hard one (manually)Īnd the easy one (through the command line). This will be the root of the bookstore project. It is made of three tables: a book table, with a foreign key to two other tables, author and publisher.Ĭreate a bookstore directory then setup Propel into it as covered in the previousĬhapter. To illustrate Propel’s build abilities, this chapter uses the data structure of a bookstore as an example. Working with existing databases guide for more details).ĭuring build time, a developer also defines the connection settings for communicating with the database.
#Php generator for mysql get database value code#
The XML schema can also be used to generate SQL code to setup your database.Īlternatively, you can generate the schema from an existing database (see the The model classes are the primary interface to find and manipulate data in the database in Propel. During build time, a developer describes the structure of the datamodel in a XML file called the “schema”.įrom this schema, Propel generates PHP classes, called “model classes”, made of object-oriented PHP code optimized for a given RDMBS. The initial step in every Propel project is the “build”.