/usr/include/qdjango/db/QDjangoModel.h is in libqdjango-dev 0.6.2-2.
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* Copyright (C) 2010-2015 Jeremy Lainé
* Contact: https://github.com/jlaine/qdjango
*
* This file is part of the QDjango Library.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
#ifndef QDJANGO_MODEL_H
#define QDJANGO_MODEL_H
#include <QObject>
#include <QVariant>
#include "QDjango_p.h"
/** \brief The QDjangoModel class is the base class for all models.
*
* To declare your own model, create a class which inherits QDjangoModel
* and declare the database fields as properties using the Q_PROPERTY
* macro. You must then register the class with QDjango using
* QDjango::registerModel().
*
* You can provide options for the model using the Q_CLASSINFO macro as
* follows:
*
* \code
* Q_CLASSINFO("__meta__", "keyword1=value1 .. keywordN=valueN")
* \endcode
*
* The following keywords are recognised for model options:
*
* \li \c db_table if provided, this is the name of the database table for
* the model, otherwise the lowercased class name will be used
* \li \c unique_together set of fields that, taken together, must be unique.
* If provided, a UNIQUE statement is included in the CREATE TABLE statement.
* Example: \c unique_together=some_field,other_field
*
* You can also provide additional information about a field using the
* Q_CLASSINFO macro, in the form:
*
* \code
* Q_CLASSINFO("field_name", "keyword1=value1 .. keywordN=valueN")
* \endcode
*
* The following keywords are recognised for field options:
*
* \li \c auto_increment if set to 'true', and if this field is the primary
* key, it will be marked as auto-increment.
* \li \c blank if set to 'true', this field is allowed to be empty.
* \li \c db_column if provided, this is the name of the database column for
* the field, otherwise the field name will be used
* \li \c db_index if set to 'true', an index will be created on this field.
* \li \c ignore_field if set to 'true', this field will be ignored
* \li \c max_length the maximum length of the field (used when creating
* the database table)
* \li \c null if set to 'true', empty values will be stored as NULL. The
* default value is 'false'.
* \li \c primary_key if set to 'true', this field will be used as the primary
* key. If no primary key is explicitly defined, an auto-increment integer
* field will be added.
* \li \c unique if set to 'true', this field must be unique throughout the
* table.
* \li \c on_delete if provided, create a foreign key constraint on this field.
* Accepted values are: 'cascade', 'restrict', and 'set_null'
*
* \ingroup Database
*/
class QDJANGO_DB_EXPORT QDjangoModel : public QObject
{
Q_OBJECT
Q_PROPERTY(QVariant pk READ pk WRITE setPk)
Q_CLASSINFO("pk", "ignore_field=true")
public:
QDjangoModel(QObject *parent = 0);
QVariant pk() const;
void setPk(const QVariant &pk);
public slots:
bool remove();
bool save();
QString toString() const;
protected:
QObject *foreignKey(const char *name) const;
void setForeignKey(const char *name, QObject *value);
};
#endif
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