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Informations about the package datamapper
WScore.DataMapper
A simple data mapper component.
Entity
Entity is a class that roughly represents a record of a database table.
The class is not pure; one needs to extend an EntityAbstract and set a modelName to use it in this component. For example
Properties should be defined as public for PDO to populate the value.
A public static variable $_modelName should reference to the model class to handle this entity.
Models
Model class(es) determines how an entity object be
- saved to a database,
- represented in html forms,
- validated its value.
The models is consisted of several classes:
- WScore\DataMapper\Model a master controller model for all other models.
- WScore\DataMapper\Model\Persistence manages how to access database layer.
- WScore\DataMapper\Model\Presentation manages html form presentation, as well as validation.
- WScore\DataMapper\Model\Property a hidden object to control attribute of each properties for Persistence and Presentation models.
All models are PHP code.
Possible to overwrite/hack/rewrite any of the models to suite need.
Attributes of entity's properties is defined by CSV.
TODO: Presentation model simply returns information about html form and validation. maybe model should be responsible to construct form and perform validation.
Role
A simple wrapper for entities to provide use-case specific methods called interactions.
Following shows an example to load post data into entity, validate value, and save to database.
Relation
defines how entity is related to other entities.
Available relations are: HasOne, Joined, and JoinBy.
Some relation, such as isJoined, requires models to be defined.
Property Annotation
write down the following annotations in PHP or CSV.
-
column:
database column name.
-
title:
human readable name for the column.
-
type:
type of the column; string, number, char (i.e. only ascii code), datetime, date, time, created_at (i.e. datetime), updated_at (i.e. datetime), etc.
-
dbDef:
database definition. not really used.
-
notNull:
not null or not. not really used.
-
default:
specify the default value used for validation. maybe used for presentation html as default value.
-
required:
used for validation. will be used for presentation for html form, marked as required.
-
protected:
indicates the column will not be mass-assigned.
-
presentedAs:
overwrites types for presentation html. specify types such as textarea, radio, check, etc.
-
style:
form/tags style.
-
validateAs:
overwrites types for validation rule. specify types such as tel, mail, etc.
-
pattern:
regular expression
All versions of datamapper with dependencies
wscore/html Version dev-master
wscore/dbaccess Version dev-master
wscore/validation Version dev-master