Model

Source

File: Model/Model.php

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abstract class Model {
 
    public $timestamp = true;
    protected $columns = [];
 
    /**
     * The table associated with the model.
     *
     * @var string
     */
    protected $table;
 
 
    /**
     * The primary key for the model.
     *
     * @var string
     */
 
    protected $primaryKey = 'ID';
 
    /**
     * The number of models to return for pagination.
     *
     * @var int
     */
    protected $per_page;
 
    public function __construct( $model_id = 0 ) {
        global $wpdb;
 
        $this->table = $wpdb->prefix . $this->table;
 
        if ( ! empty( $model_id ) ) {
            $model_raw = $wpdb->get_row( " SELECT * FROM {$this->table} WHERE {$this->primaryKey} = {$model_id}  ",
                ARRAY_A );
            if ( $model_raw ) {
                $this->syncModel( $model_raw );
            }
        }
 
    }
 
    /**
     * Save the model to the database.
     *
     * @param  array  $options
     *
     * @return bool|mixed
     */
    public function save( array $options = [] ) {
        global $wpdb;
 
        $columns = $this->db_columns( $options );
 
        $is_insert = empty( $columns[ $this->primaryKey ] );
 
        if ( $is_insert ) {
 
            if ( $this->timestamp ) {
                $columns['created_at'] = dozent_mysql_time();
            }
 
            $wpdb->insert( $this->table, $columns );
 
            $insert_id = (int) $wpdb->insert_id;
 
        } else {
 
            $updated_columns = dozent_array_only( get_object_vars( $this ), array_keys( $columns ) );
            unset( $updated_columns[ $this->primaryKey ] );
 
            $wpdb->update( $this->table, $updated_columns, [ $this->primaryKey => $columns[ $this->primaryKey ] ] );
            $insert_id = (int) $columns[ $this->primaryKey ];
            $columns = array_merge( $columns, $updated_columns );
        }
 
        if ( $insert_id ) {
            $columns[ $this->primaryKey ] = $insert_id;
 
            $this->syncModel( $columns );
 
            return $this;
        }
 
 
        return new \WP_Error( 'dozent_model_saving_error', __( ' Something went wrong ', 'dozent' ) );
    }
 
    /**
     * Modal valid database column
     *
     *
     * @since DozentLMS 1.0.0
     *
     *
     * @param $options
     *
     * @return array Database Column
     */
 
    public function db_columns( $options ) {
 
        $columns = array_merge( get_object_vars( $this ), $this->columns );
 
        /**
         * Filter default model properties as DB column which not required or not available in the actual DB table
         *
         * @since DozentLMS 1.0.0
         */
 
        $db_column_except = apply_filters( 'dozent_db_columns_except',
            [ 'table', 'timestamp', 'columns', 'primaryKey', 'per_page' ] );
 
        $columns = dozent_array_except( $columns, $db_column_except );
 
        if ( dozent_count( $options ) ) {
            $columns = $options;
        }
 
        $columns = array_filter( $columns );
 
        return $columns;
    }
 
    protected function syncModel( $columns = [] ) {
        $this->columns = array_merge( $this->columns, $columns );
 
        $columns = $this->columns;
 
        if ( ! empty( $columns[ $this->primaryKey ] ) ) {
            $primary_key = $columns[ $this->primaryKey ];
            unset( $columns[ $this->primaryKey ] );
 
            $columns = array_merge( [ $this->primaryKey => $primary_key ], $columns );
        }
 
        foreach ( $columns as $property => $value ) {
            $this->{$property} = $value;
        }
 
        $this->columns = $columns;
    }
 
    /**
     * Dynamically retrieve attributes on the model.
     *
     * @param  string  $key
     *
     * @return mixed
     */
    public function __get( $key ) {
        return $this->getAttribute( $key );
    }
 
    public function getAttribute( $key ) {
        $value = dozent_array_get( $key, $this->columns );
 
        return $value;
    }
 
    /**
     * Dynamically set attributes on the model.
     *
     * @param  string  $key
     * @param  mixed  $value
     *
     * @return void
     */
 
    public function __set( $key, $value ) {
        $this->columns[ $key ] = $value;
    }
 
    /**
     * Convert the model to its string representation.
     *
     * @return string
     */
    public function __toString() {
        return $this->toJson();
    }
 
    /**
     * Convert the model to array
     *
     *
     * @return array
     */
 
    public function toArray() {
        return (array) $this;
    }
 
    public function toJson( $options = 0 ) {
 
        $json = json_encode( $this->toArray(), $options );
 
        if ( JSON_ERROR_NONE !== json_last_error() ) {
 
            throw new \Exception( 'Error encoding model [' . get_class( $this ) . '] to JSON: '
                                  . json_last_error_msg() );
 
        }
 
        return $json;
    }
 
}

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