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<?php |
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namespace EventEspresso\core\libraries\rest_api; |
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use EE_Registry; |
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use EED_Core_Rest_Api; |
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if (! defined('EVENT_ESPRESSO_VERSION')) { |
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exit('No direct script access allowed'); |
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} |
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/** |
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* Model_Version_Info |
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* Class for things that bridge the gap between API resources and PHP models describing |
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* the underlying data. |
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* This should really be the only place in the API that is directly aware of models, |
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* everywhere should go through here to learn about the models and interact with them. |
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* This is done so the API can serve request`s for a previous version from data |
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* from the current version of core |
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* |
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* @package Event Espresso |
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* @subpackage eea-rest-api |
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* @author Mike Nelson |
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*/ |
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class ModelVersionInfo |
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{ |
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/** |
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* Constant used in the $_model_changes array to indicate that a model |
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* was completely new in this version |
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*/ |
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const MODEL_ADDED = 'model_added_in_this_version'; |
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/** |
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* Top-level keys are versions (major and minor version numbers, eg "4.6") |
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* next-level keys are model names (eg "Event") that underwent some change in that version |
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* and the value is either Model_Version_Info::model_added (indicating the model is completely NEW in this version), |
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* or it's an array where the values are model field names, |
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* or API resource properties (ie, non-model fields that appear in REST API results) |
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* If a version is missing then we don't know anything about what changes it introduced from the previous version |
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* |
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* @var array |
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*/ |
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protected $model_changes = array(); |
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/** |
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* top-level keys are version numbers, |
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* next-level keys are model CLASSNAMES (even parent classnames), |
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* and next-level keys are extra resource properties to attach to those models' resources, |
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* and next-level key-value pairs, where the keys are: |
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* 'raw', 'type', 'nullable', 'table_alias', 'table_column', 'always_available' |
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* |
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* @var array |
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*/ |
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protected $resource_changes = array(); |
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/** |
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* @var string indicating what version of the API was requested |
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* (eg although core might be at version 4.8.11, they may have sent a request |
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* for 4.6) |
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*/ |
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protected $requested_version = null; |
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/** |
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* Keys are model names, values are their classnames. |
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* We cache this so we only need to calculate this once per request |
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* |
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* @var array |
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*/ |
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protected $cached_models_for_requested_version = null; |
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/** |
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* @var array |
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*/ |
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protected $cached_model_changes_between_requested_version_and_current = null; |
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/** |
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* @var array |
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*/ |
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protected $cached_resource_changes_between_requested_version_and_current = null; |
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/** |
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* 2d array where top-level keys are model names, 2nd-level keys are field names |
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* and values are the actual field objects |
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* |
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* @var array |
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*/ |
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protected $cached_fields_on_models = array(); |
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/** |
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* Model_Version_Info constructor. |
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* |
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* @param string $requested_version |
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*/ |
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public function __construct($requested_version) |
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{ |
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$this->requested_version = (string)$requested_version; |
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$this->model_changes = array( |
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'4.8.29' => array( |
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//first version where the REST API is in EE core, so no need |
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//to specify how its different from the previous |
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), |
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); |
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//setup data for "extra" fields added onto resources which don't actually exist on models |
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$this->resource_changes = apply_filters( |
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'FHEE__Model_Version_Info___construct__extra_resource_properties_for_models', |
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array() |
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); |
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$defaults = array( |
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'raw' => false, |
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'type' => 'N/A', |
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'nullable' => true, |
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'table_alias' => 'N/A', |
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'table_column' => 'N/A', |
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'always_available' => true, |
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); |
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foreach ($this->resource_changes as $version => $model_classnames) { |
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foreach ($model_classnames as $model_classname => $extra_fields) { |
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foreach ($extra_fields as $fieldname => $field_data) { |
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$this->resource_changes[$model_classname][$fieldname]['name'] = $fieldname; |
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foreach ($defaults as $attribute => $default_value) { |
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if (! isset($this->resource_changes[$model_classname][$fieldname][$attribute])) { |
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$this->resource_changes[$model_classname][$fieldname][$attribute] = $default_value; |
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} |
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} |
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} |
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} |
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} |
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} |
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/** |
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* Returns a slice of Model_Version_Info::model_changes()'s array |
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* indicating exactly what changes happened between the current core version, |
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* and the version requested |
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* |
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* @return array |
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*/ |
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View Code Duplication |
public function modelChangesBetweenRequestedVersionAndCurrent() |
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{ |
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if ($this->cached_model_changes_between_requested_version_and_current === null) { |
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$model_changes = array(); |
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foreach ($this->modelChanges() as $version => $models_changed_in_version) { |
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if ($version <= EED_Core_Rest_Api::core_version() && $version > $this->requestedVersion()) { |
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$model_changes[$version] = $models_changed_in_version; |
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} |
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} |
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$this->cached_model_changes_between_requested_version_and_current = $model_changes; |
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} |
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return $this->cached_model_changes_between_requested_version_and_current; |
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} |
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/** |
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* Returns a slice of Model_Version_Info::model_changes()'s array |
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* indicating exactly what changes happened between the current core version, |
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* and the version requested |
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* |
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* @return array |
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*/ |
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View Code Duplication |
public function resourceChangesBetweenRequestedVersionAndCurrent() |
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{ |
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if ($this->cached_resource_changes_between_requested_version_and_current === null) { |
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$resource_changes = array(); |
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foreach ($this->resourceChanges() as $version => $model_classnames) { |
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if ($version <= EED_Core_Rest_Api::core_version() && $version > $this->requestedVersion()) { |
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$resource_changes[$version] = $model_classnames; |
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} |
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} |
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$this->cached_resource_changes_between_requested_version_and_current = $resource_changes; |
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} |
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return $this->cached_resource_changes_between_requested_version_and_current; |
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} |
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/** |
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* If a request was sent to 'wp-json/ee/v4.7/events' this would be '4.7' |
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* |
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* @return string like '4.6' |
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*/ |
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public function requestedVersion() |
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{ |
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return $this->requested_version; |
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} |
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/** |
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* Returns an array describing how the models have changed in each version of core |
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* that supports the API (starting at 4.6) |
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* Top-level keys are versions (major and minor version numbers, eg "4.6") |
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* next-level keys are model names (eg "Event") that underwent some change in that version |
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* and the value is either NULL (indicating the model is completely NEW in this version), |
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* or it's an array where fields are value names. |
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* If a version is missing then we don't know anything about what changes it introduced from the previous version |
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* |
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* @return array |
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*/ |
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public function modelChanges() |
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{ |
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return $this->model_changes; |
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} |
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/** |
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* Takes into account the requested version, and the current version, and |
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* what changed between the two, and tries to return. |
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* Analogous to EE_Registry::instance()->non_abstract_db_models |
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* |
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* @return array keys are model names, values are their classname |
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*/ |
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public function modelsForRequestedVersion() |
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{ |
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if ($this->cached_models_for_requested_version === null) { |
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$all_models_in_current_version = EE_Registry::instance()->non_abstract_db_models; |
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foreach ($this->modelChangesBetweenRequestedVersionAndCurrent() as $version => $models_changed) { |
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foreach ($models_changed as $model_name => $new_indicator_or_fields_added) { |
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if ($new_indicator_or_fields_added === ModelVersionInfo::MODEL_ADDED) { |
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unset($all_models_in_current_version[$model_name]); |
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} |
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} |
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} |
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$this->cached_models_for_requested_version = apply_filters( |
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'FHEE__EventEspresso_core_libraries_rest_api__models_for_requested_version', |
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$all_models_in_current_version, |
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$this |
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); |
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} |
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return $this->cached_models_for_requested_version; |
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} |
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/** |
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* Determines if this is a valid model name in the requested version. |
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* Similar to EE_Registry::instance()->is_model_name(), but takes the requested |
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* version's models into account |
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* |
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* @param string $model_name eg 'Event' |
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* @return boolean |
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*/ |
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public function isModelNameInThisVersion($model_name) |
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{ |
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$model_names = $this->modelsForRequestedVersion(); |
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if (isset($model_names[$model_name])) { |
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return true; |
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} else { |
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return false; |
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} |
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} |
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/** |
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* Wrapper for EE_Registry::instance()->load_model(), but takes the requested |
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* version's models into account |
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* |
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* @param string $model_name |
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* @return \EEM_Base |
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* @throws \EE_Error |
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*/ |
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public function loadModel($model_name) |
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{ |
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if ($this->isModelNameInThisVersion($model_name)) { |
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return EE_Registry::instance()->load_model($model_name); |
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} else { |
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throw new \EE_Error( |
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sprintf( |
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__( |
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'Cannot load model "%1$s" because it does not exist in version %2$s of Event Espresso', |
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'event_espresso' |
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), |
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$model_name, |
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$this->requestedVersion() |
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) |
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); |
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} |
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} |
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/** |
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* Gets all the fields that should exist on this model right now |
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* |
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* @param \EEM_Base $model |
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* @return array|\EE_Model_Field_Base[] |
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*/ |
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public function fieldsOnModelInThisVersion($model) |
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{ |
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if (! isset($this->cached_fields_on_models[$model->get_this_model_name()])) { |
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//get all model changes between the requested version and current core version |
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$changes = $this->modelChangesBetweenRequestedVersionAndCurrent(); |
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//fetch all fields currently on this model |
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$current_fields = $model->field_settings(); |
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//remove all fields that have been added since |
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foreach ($changes as $version => $changes_in_version) { |
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if (isset($changes_in_version[$model->get_this_model_name()]) |
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&& $changes_in_version[$model->get_this_model_name()] !== ModelVersionInfo::MODEL_ADDED |
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) { |
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$current_fields = array_diff_key( |
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$current_fields, |
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array_flip($changes_in_version[$model->get_this_model_name()]) |
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); |
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} |
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} |
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$this->cached_fields_on_models = $current_fields; |
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} |
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return $this->cached_fields_on_models; |
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} |
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/** |
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* Determines if $object is of one of the classes of $classes. Similar to |
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* in_array(), except this checks if $object is a subclass of the classnames provided |
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* in $classnames |
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* |
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* @param object $object |
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* @param array $classnames |
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* @return boolean |
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*/ |
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public function isSubclassOfOne($object, $classnames) |
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{ |
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foreach ($classnames as $classname) { |
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if (is_a($object, $classname)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Returns the list of model field classes that that the API basically ignores |
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* |
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* @return array |
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*/ |
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public function fieldsIgnored() |
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{ |
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return apply_filters( |
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'FHEE__Controller_Model_Read_fields_ignored', |
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array('EE_Foreign_Key_Field_Base', 'EE_Any_Foreign_Model_Name_Field') |
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); |
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} |
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/** |
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* If this field one that should be ignored by the API? |
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* |
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* @param EE_Model_Field_Base |
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* @return boolean |
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*/ |
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public function fieldIsIgnored($field_obj) |
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{ |
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return $this->isSubclassOfOne($field_obj, $this->fieldsIgnored()); |
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} |
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369
|
|
|
/** |
370
|
|
|
* Returns the list of model field classes that have a "raw" and non-raw formats. |
371
|
|
|
* Normally the "raw" versions are only accessible to those who can edit them. |
372
|
|
|
* |
373
|
|
|
* @return array an array of EE_Model_Field_Base child classnames |
374
|
|
|
*/ |
375
|
|
|
public function fieldsThatHaveRenderedFormat() |
376
|
|
|
{ |
377
|
|
|
return apply_filters( |
378
|
|
|
'FHEE__Controller_Model_Read__fields_raw', |
379
|
|
|
array('EE_Post_Content_Field', 'EE_Full_HTML_Field') |
380
|
|
|
); |
381
|
|
|
} |
382
|
|
|
|
383
|
|
|
|
384
|
|
|
|
385
|
|
|
/** |
386
|
|
|
* If this field one that has a raw format |
387
|
|
|
* |
388
|
|
|
* @param EE_Model_Field_Base |
389
|
|
|
* @return boolean |
390
|
|
|
*/ |
391
|
|
|
public function fieldHasRenderedFormat($field_obj) |
392
|
|
|
{ |
393
|
|
|
return $this->isSubclassOfOne($field_obj, $this->fieldsThatHaveRenderedFormat()); |
394
|
|
|
} |
395
|
|
|
|
396
|
|
|
|
397
|
|
|
|
398
|
|
|
/** |
399
|
|
|
* Returns the list of model field classes that have a "_pretty" and non-pretty versions. |
400
|
|
|
* The pretty version of the field is NOT query-able or editable, but requires no extra permissions |
401
|
|
|
* to view |
402
|
|
|
* |
403
|
|
|
* @return array an array of EE_Model_Field_Base child classnames |
404
|
|
|
*/ |
405
|
|
|
public function fieldsThatHavePrettyFormat() |
406
|
|
|
{ |
407
|
|
|
return apply_filters( |
408
|
|
|
'FHEE__Controller_Model_Read__fields_pretty', |
409
|
|
|
array('EE_Enum_Integer_Field', 'EE_Enum_Text_Field', 'EE_Money_Field') |
410
|
|
|
); |
411
|
|
|
} |
412
|
|
|
|
413
|
|
|
|
414
|
|
|
|
415
|
|
|
/** |
416
|
|
|
* If this field one that has a pretty equivalent |
417
|
|
|
* |
418
|
|
|
* @param EE_Model_Field_Base |
419
|
|
|
* @return boolean |
420
|
|
|
*/ |
421
|
|
|
public function fieldHasPrettyFormat($field_obj) |
422
|
|
|
{ |
423
|
|
|
return $this->isSubclassOfOne($field_obj, $this->fieldsThatHavePrettyFormat()); |
424
|
|
|
} |
425
|
|
|
|
426
|
|
|
|
427
|
|
|
|
428
|
|
|
/** |
429
|
|
|
* Returns an array describing what extra API resource properties have been added through the versions |
430
|
|
|
* |
431
|
|
|
* @return array @see $this->_extra_resource_properties_for_models |
432
|
|
|
*/ |
433
|
|
|
public function resourceChanges() |
434
|
|
|
{ |
435
|
|
|
return $this->resource_changes; |
436
|
|
|
} |
437
|
|
|
|
438
|
|
|
|
439
|
|
|
|
440
|
|
|
/** |
441
|
|
|
* Returns an array where keys are extra resource properties in this version of the API, |
442
|
|
|
* and values are key-value pairs describing the new properties. @see Model_Version::_resource_changes |
443
|
|
|
* |
444
|
|
|
* @param \EEM_Base $model |
445
|
|
|
* @return array |
446
|
|
|
*/ |
447
|
|
|
public function extraResourcePropertiesForModel($model) |
448
|
|
|
{ |
449
|
|
|
$extra_properties = array(); |
450
|
|
|
foreach ($this->resourceChangesBetweenRequestedVersionAndCurrent() as $version => $model_classnames) { |
451
|
|
|
foreach ($model_classnames as $model_classname => $properties_added_in_this_version) { |
452
|
|
|
if (is_subclass_of($model, $model_classname)) { |
453
|
|
|
$extra_properties = array_merge($extra_properties, $properties_added_in_this_version); |
454
|
|
|
} |
455
|
|
|
} |
456
|
|
|
} |
457
|
|
|
return $extra_properties; |
458
|
|
|
} |
459
|
|
|
|
460
|
|
|
|
461
|
|
|
|
462
|
|
|
/** |
463
|
|
|
* Gets all the related models for the specified model. It's good to use this |
464
|
|
|
* in case this model didn't exist for this version or something |
465
|
|
|
* |
466
|
|
|
* @param \EEM_Base $model |
467
|
|
|
* @return \EE_Model_Relation_Base[] |
468
|
|
|
*/ |
469
|
|
|
public function relationSettings(\EEM_Base $model) |
470
|
|
|
{ |
471
|
|
|
$relations = array(); |
472
|
|
|
foreach ($model->relation_settings() as $relation_name => $relation_obj) { |
473
|
|
|
if ($this->isModelNameInThisVersion($relation_name)) { |
474
|
|
|
$relations[$relation_name] = $relation_obj; |
475
|
|
|
} |
476
|
|
|
} |
477
|
|
|
//filter the results, but use the old filter name |
478
|
|
|
return apply_filters( |
479
|
|
|
'FHEE__Read__create_entity_from_wpdb_result__related_models_to_include', |
480
|
|
|
$relations, |
481
|
|
|
$model |
482
|
|
|
); |
483
|
|
|
} |
484
|
|
|
} |
485
|
|
|
|
486
|
|
|
// End of file Model_Version_Info.php |
487
|
|
|
|