88 lines
2.5 KiB
PHP
88 lines
2.5 KiB
PHP
<?php namespace System\DB\Eloquent;
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class Relate {
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/**
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* Retrieve the query for a 1:1 relationship.
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*
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* @param string $model
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* @param string $foreign_key
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* @param object $eloquent
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* @return mixed
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*/
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public static function has_one($model, $foreign_key, $eloquent)
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{
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$eloquent->relating = __FUNCTION__;
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return static::has_one_or_many($model, $foreign_key, $eloquent);
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}
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/**
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* Retrieve the query for a 1:* relationship.
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*
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* @param string $model
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* @param string $foreign_key
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* @param object $eloquent
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* @return mixed
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*/
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public static function has_many($model, $foreign_key, $eloquent)
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{
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$eloquent->relating = __FUNCTION__;
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return static::has_one_or_many($model, $foreign_key, $eloquent);
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}
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/**
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* Retrieve the query for a 1:1 or 1:* relationship.
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*
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* @param string $model
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* @param string $foreign_key
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* @param object $eloquent
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* @return mixed
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*/
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private static function has_one_or_many($model, $foreign_key, $eloquent)
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{
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$eloquent->relating_key = (is_null($foreign_key)) ? \System\Str::lower(get_class($eloquent)).'_id' : $foreign_key;
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return Factory::make($model)->where($eloquent->relating_key, '=', $eloquent->id);
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}
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/**
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* Retrieve the query for a 1:1 belonging relationship.
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*
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* @param array $caller
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* @param string $model
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* @param object $eloquent
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* @return mixed
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*/
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public static function belongs_to($caller, $model, $eloquent)
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{
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$eloquent->relating = __FUNCTION__;
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$eloquent->relating_key = $caller['function'].'_id';
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return Factory::make($model)->where('id', '=', $eloquent->attributes[$eloquent->relating_key]);
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}
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/**
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* Retrieve the query for a *:* relationship.
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*
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* @param string $model
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* @param object $eloquent
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* @return mixed
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*/
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public static function has_many_and_belongs_to($model, $eloquent)
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{
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// -----------------------------------------------------
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// Get the models involved in the relationship.
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// -----------------------------------------------------
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$models = array(\System\Str::lower($model), \System\Str::lower(get_class($eloquent)));
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sort($models);
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$eloquent->relating_table = implode('_', $models);
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$eloquent->relating = __FUNCTION__;
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$eloquent->relating_key = $eloquent->relating_table.'.'.\System\Str::lower(get_class($eloquent)).'_id';
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return Factory::make($model)
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->select(Meta::table($model).'.*')
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->join($eloquent->relating_table, Meta::table($model).'.id', '=', $eloquent->relating_table.'.'.\System\Str::lower($model).'_id')
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->where($eloquent->relating_key, '=', $eloquent->id);
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}
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} |