RunForOneObject::gatherTemplates() - Code Metrics - Inspection of "WIP" - sunnysideup/silverstripe-version-pruner - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 8f132f...6d656d )

by Nicolaas

created 2022-09-04 20:53 UTC

RunForOneObject::gatherTemplates() A

↳ Parent: RunForOneObject

Complexity

Conditions	5
Paths	3

Size

Total Lines	16
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	5
eloc	11
c	1
b	0
f	0
nc	3
nop	0
dl	0
loc	16
rs	9.6111

<?php

namespace Sunnysideup\VersionPruner\Api;

use SilverStripe\Assets\File;
use SilverStripe\CMS\Model\SiteTree;
filter:
    dependency_paths: ["lib/*"]
use SilverStripe\Core\Config\Configurable;
use SilverStripe\Core\Injector\Injectable;
use SilverStripe\Core\Injector\Injector;
use SilverStripe\ORM\DataList;
use SilverStripe\ORM\DataObject;
use SilverStripe\ORM\DB;
use SilverStripe\Versioned\Versioned;
filter:
    dependency_paths: ["lib/*"]
use Sunnysideup\VersionPruner\PruningTemplates\BasedOnTimeScale;
use Sunnysideup\VersionPruner\PruningTemplates\DeleteFiles;
use Sunnysideup\VersionPruner\PruningTemplates\Drafts;
use Sunnysideup\VersionPruner\PruningTemplates\SiteTreeVersioningTemplate;

class RunForOneObject
{
    use Configurable;
    use Injectable;

    /**
     * Versioned DataObject.
     *
     * @var DataObject
     */
    protected $object;

    /**
     * array of Version numbers to delete.
     *
     * @var string
     */
    protected $toDelete = [];

    /**
     * reversed list of templates (most specific first).
     *
     * @var array
     */
    protected $templatesAvailable = [];

    /**
     * list of tables to delete per class name.
     *
     * @var array
     */
    protected $tablesPerClassName = [];

    /**
     * list of templates per class name.
     *
     * @var array
     */
    protected $templatesPerClassName = [];

    /**
     * @var bool
     */
    protected $verbose = false;

    /**
     * @var bool
     */
    protected $dryRun = false;

    /**
     * @var array
     */
    protected $countPerTableRegister = [];

    /**
     * schema is:
     * ```php
     *     ClassName => [
     *         PruningTemplateClassName1 => [
     *             "PropertyName1" => Value1
     *             "PropertyName2" => Value2
     *         ],
     *         PruningTemplateClassName2 => [
     *         ],
     *     ]
     * ```.
     * N.B. least specific first!
     *
     * @var array
     */
    private static $templates = [
        'default' => [
            BasedOnTimeScale::class => [],
        ],
        SiteTree::class => [
            Drafts::class => [],
            SiteTreeVersioningTemplate::class => [],
        ],
        File::class => [
            DeleteFiles::class => [],
            BasedOnTimeScale::class => [],
        ],
    ];

    public function __construct()
    {
        $this->gatherTemplates();
    }

    protected function gatherTemplates()
    {
        $this->templatesAvailable = array_reverse(
            $this->Config()->get('templates'),
            true //important - to preserve keys!
        );
        // remove skips
        foreach($this->templatesAvailable as $className => $runnerClassNameWithOptions) {
            if($runnerClassNameWithOptions === 'skip') {
                unset($this->templatesAvailable[$className]);
                continue;
            }
            foreach($runnerClassNameWithOptions as $runnerClassName => $options) {
                if($options === 'skip') {
                    unset($this->templatesAvailable[$className][$runnerClassName]);
                    continue;
                }
            }
        }
    }

    public static function inst()
    {
        return Injector::inst()->get(static::class);
    }

    public function setVerbose(?bool $verbose = true): self
    {
        $this->verbose = $verbose;

        return $this;
    }

    public function setDryRun(?bool $dryRun = true): self
    {
        $this->dryRun = $dryRun;

        return $this;
    }

    /**
     * returns the total number deleted.
     *
     * @param DataObject $object
     *
     * @return int number of deletions
     */
    public function deleteSuperfluousVersions($object): int
    {
        $this->object = $object;
        if (! $this->isValidObject()) {
            return 0;
        }

        $this->workoutWhatNeedsDeleting();

        // Base table has Versioned data
        $totalDeleted = 0;

        // Ugly (borrowed from DataObject::class), but returns all
        // database tables relating to DataObject
        $queriedTables = $this->getTablesForClassName();
        // print_r($this->toDelete[$this->getUniqueKey()]);
        foreach ($queriedTables as $table) {
            $overallCount = $this->getCountPerTable($table);
            if($this->verbose) {
                $selectToBeDeletedSQL = '
                    SELECT COUNT(ID) AS C FROM "' . $table . '_Versions"
                    WHERE "RecordID" = ' . (int) $this->object->ID;
                $totalRows = DB::query($selectToBeDeletedSQL)->value();
                DB::alteration_message('... ... ... Number of rows for current object in '.$table.': '.$totalRows);
            }
            if (count($this->toDelete[$this->getUniqueKey()])) {
                if (true === $this->dryRun) {
                    $selectToBeDeletedSQL = '
                        SELECT COUNT(ID) AS C FROM "' . $table . '_Versions"
                        WHERE
                            "Version" IN (' . implode(',', $this->toDelete[$this->getUniqueKey()]) . ')
                            AND "RecordID" = ' . (int) $this->object->ID;

                    $toBeDeletedCount = DB::query($selectToBeDeletedSQL)->value();
                    $totalDeleted += $toBeDeletedCount;
                    if ($this->verbose) {
                        DB::alteration_message('... ... ... running ' . $selectToBeDeletedSQL);
                        DB::alteration_message('... ... ... total rows to be deleted  ... ' . $toBeDeletedCount . ' of ' . $overallCount);
                    }
                } else {
                    $delSQL = '
                        DELETE FROM "' . $table . '_Versions"
                        WHERE
                            "Version" IN (' . implode(',', $this->toDelete[$this->getUniqueKey()]) . ')
                            AND "RecordID" = ' . (int) $this->object->ID;

                    DB::query($delSQL);
                    $count = DB::affected_rows();
                    $totalDeleted += $count;
                    $overallCount -= $count;
                    if ($this->verbose) {
                        DB::alteration_message('... ... ... running ' . $delSQL);
                        DB::alteration_message('... ... ... total rows deleted ... ' . $totalDeleted);
                    }
                }
            }
            $this->addCountRegister($table, $overallCount);
        }

        return $totalDeleted;
    }

    /**
     * returns the total number deleted.
     *
     * @param DataObject $object
     * @param bool       $verbose
     */
    public function getTemplatesDescription($object): array
    {
        $array = [];
        $this->object = $object;
        if ($this->isValidObject()) {
            $myTemplates = $this->findBestSuitedTemplates();
            if(is_array($myTemplates) && count($myTemplates)) {
                foreach ($myTemplates as $className => $options) {
                    $runner = new $className($this->object, []);
                    $array[] = $runner->getTitle() . ': ' . $runner->getDescription();
                }
            }
        }

        return $array;
    }

    public function getCountRegister(): array
    {
        return $this->countPerTableRegister;
    }

    protected function workoutWhatNeedsDeleting()
    {
        // array of version IDs to delete
        // IMPORTANT
        if(! isset($this->toDelete[$this->getUniqueKey()])) {
            $this->toDelete[$this->getUniqueKey()] = [];
        }

        $myTemplates = $this->findBestSuitedTemplates();
        if(is_array($myTemplates) && !empty($myTemplates)) {
            foreach ($myTemplates as $className => $options) {
                $runner = new $className($this->object, $this->toDelete[$this->getUniqueKey()]);
                if ($this->verbose) {
                    DB::alteration_message('... ... ... Running ' . $runner->getTitle() . ': ' . $runner->getDescription());
                }

                foreach ($options as $key => $value) {
                    $method = 'set' . $key;
                    $runner->{$method}($value);
                }

                $runner->run();
                // print_r($runner->getToDelete());
                $this->toDelete[$this->getUniqueKey()] += $runner->getToDelete();

                if ($this->verbose) {
                    DB::alteration_message('... ... ... Total versions to delete now ' . count($this->toDelete[$this->getUniqueKey()]));
                }
            }
        }
    }

    /**
     * we use this to make sure we never mix up two records.
     */
    protected function getUniqueKey(): string
    {
        return $this->object->ClassName . '_' . $this->object->ID;
    }

    protected function hasStages(): bool
    {
        $hasStages = false;
        if ($this->object->hasMethod('hasStages')) {
            $oldMode = Versioned::get_reading_mode();
            if ('Stage.Stage' !== $oldMode) {
                Versioned::set_reading_mode('Stage.Stage');
            }

            $hasStages = (bool) $this->object->hasStages();
            if ('Stage.Stage' !== $oldMode) {
                Versioned::set_reading_mode($oldMode);
            }
        }

        return $hasStages;
    }

    protected function findBestSuitedTemplates()
    {
        if (empty($this->templatesPerClassName[$this->object->ClassName])) {
            foreach ($this->templatesAvailable as $className => $classesWithOptions) {
                if (is_a($this->object, $className)) {
                    $this->templatesPerClassName[$this->object->ClassName] = $classesWithOptions;

                    break;
                }
            }

            if (! isset($this->templatesPerClassName[$this->object->ClassName])) {
                $this->templatesPerClassName[$this->object->ClassName] = $templates['default'] ?? $classesWithOptions;

            }
        }

        return $this->templatesPerClassName[$this->object->ClassName];
    }

    protected function isValidObject(): bool
    {
        if (false === $this->hasStages()) {
            if ($this->verbose) {
                DB::alteration_message('... ... ... Error, no stages', 'deleted');
            }

            return false;
        }

        // if (! $this->object->hasMethod('isLiveVersion')) {
        //     return false;
        // }
        //
        // if (false === $this->object->isLiveVersion()) {
        //     if ($this->verbose) {
        //         DB::alteration_message('... ... ... Error, not a live version', 'deleted');
        //     }
        //
        //     return false;
        // }

        return $this->object && $this->object->exists();
    }

    protected function getTablesForClassName(): array
    {
        if (empty($this->tablesPerClassName[$this->object->ClassName])) {
            // $classTables = []
            // $allClasses = ClassInfo::subclassesFor($this->object->ClassName, true);
            // foreach ($allClasses as $class) {
            //     if (DataObject::getSchema()->classHasTable($class)) {
            //         $classTables[] = DataObject::getSchema()->tableName($class);
            //     }
            // }
            // $this->tablesPerClassName[$this->object->ClassName] = array_unique($classTables);

            $srcQuery = DataList::create($this->object->ClassName)
                ->filter('ID', $this->object->ID)
                ->dataQuery()
                ->query()
            ;
            $this->tablesPerClassName[$this->object->ClassName] = $srcQuery->queriedTables();
        }

        return $this->tablesPerClassName[$this->object->ClassName];
    }

    protected function addCountRegister(string $tableName, int $count): void
    {
        $this->countPerTableRegister[$tableName] = $count;
    }


    protected function getCountPerTable(string $table) : int
    {
        $overallCount = $this->countPerTableRegister[$table] ?? -1;
        if($overallCount === -1) {
            $selectOverallCountSQL = '
                SELECT COUNT(ID) AS C FROM "' . $table . '_Versions"';
            $overallCount = DB::query($selectOverallCountSQL)->value();
        }

        return $overallCount;
    }

}


1			<?php
2
3			namespace Sunnysideup\VersionPruner\Api;
4
5			use SilverStripe\Assets\File;
6			use SilverStripe\CMS\Model\SiteTree;
			0 ignored issues – show Bug introduced 2022-06-07 03:43 UTC by Report Bug Copy Issue Report The type `SilverStripe\CMS\Model\SiteTree` was not found. Maybe you did not declare it correctly or list all dependencies? The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g. `excluded_paths: ["lib/"]`, you can move it to the dependency path list as follows: filter: dependency_paths: ["lib/"] For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths Loading history...
7			use SilverStripe\Core\Config\Configurable;
8			use SilverStripe\Core\Injector\Injectable;
9			use SilverStripe\Core\Injector\Injector;
10			use SilverStripe\ORM\DataList;
11			use SilverStripe\ORM\DataObject;
12			use SilverStripe\ORM\DB;
13			use SilverStripe\Versioned\Versioned;
			0 ignored issues – show Bug introduced 2022-06-07 03:43 UTC by Report Bug Copy Issue Report The type `SilverStripe\Versioned\Versioned` was not found. Maybe you did not declare it correctly or list all dependencies? The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g. `excluded_paths: ["lib/"]`, you can move it to the dependency path list as follows: filter: dependency_paths: ["lib/"] For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths Loading history...
14			use Sunnysideup\VersionPruner\PruningTemplates\BasedOnTimeScale;
15			use Sunnysideup\VersionPruner\PruningTemplates\DeleteFiles;
16			use Sunnysideup\VersionPruner\PruningTemplates\Drafts;
17			use Sunnysideup\VersionPruner\PruningTemplates\SiteTreeVersioningTemplate;
18
19			class RunForOneObject
20			{
21			use Configurable;
22			use Injectable;
23
24			/**
25			* Versioned DataObject.
26			*
27			* @var DataObject
28			*/
29			protected $object;
30
31			/**
32			* array of Version numbers to delete.
33			*
34			* @var string
35			*/
36			protected $toDelete = [];
37
38			/**
39			* reversed list of templates (most specific first).
40			*
41			* @var array
42			*/
43			protected $templatesAvailable = [];
44
45			/**
46			* list of tables to delete per class name.
47			*
48			* @var array
49			*/
50			protected $tablesPerClassName = [];
51
52			/**
53			* list of templates per class name.
54			*
55			* @var array
56			*/
57			protected $templatesPerClassName = [];
58
59			/**
60			* @var bool
61			*/
62			protected $verbose = false;
63
64			/**
65			* @var bool
66			*/
67			protected $dryRun = false;
68
69			/**
70			* @var array
71			*/
72			protected $countPerTableRegister = [];
73
74			/**
75			* schema is:
76			* ```php
77			* ClassName => [
78			* PruningTemplateClassName1 => [
79			* "PropertyName1" => Value1
80			* "PropertyName2" => Value2
81			* ],
82			* PruningTemplateClassName2 => [
83			* ],
84			* ]
85			* ```.
86			* N.B. least specific first!
87			*
88			* @var array
89			*/
90			private static $templates = [
91			'default' => [
92			BasedOnTimeScale::class => [],
93			],
94			SiteTree::class => [
95			Drafts::class => [],
96			SiteTreeVersioningTemplate::class => [],
97			],
98			File::class => [
99			DeleteFiles::class => [],
100			BasedOnTimeScale::class => [],
101			],
102			];
103
104			public function __construct()
105			{
106			$this->gatherTemplates();
107			}
108
109			protected function gatherTemplates()
110			{
111			$this->templatesAvailable = array_reverse(
112			$this->Config()->get('templates'),
113			true //important - to preserve keys!
114			);
115			// remove skips
116			foreach($this->templatesAvailable as $className => $runnerClassNameWithOptions) {
117			if($runnerClassNameWithOptions === 'skip') {
118			unset($this->templatesAvailable[$className]);
119			continue;
120			}
121			foreach($runnerClassNameWithOptions as $runnerClassName => $options) {
122			if($options === 'skip') {
123			unset($this->templatesAvailable[$className][$runnerClassName]);
124			continue;
125			}
126			}
127			}
128			}
129
130			public static function inst()
131			{
132			return Injector::inst()->get(static::class);
133			}
134
135			public function setVerbose(?bool $verbose = true): self
136			{
137			$this->verbose = $verbose;
138
139			return $this;
140			}
141
142			public function setDryRun(?bool $dryRun = true): self
143			{
144			$this->dryRun = $dryRun;
145
146			return $this;
147			}
148
149			/**
150			* returns the total number deleted.
151			*
152			* @param DataObject $object
153			*
154			* @return int number of deletions
155			*/
156			public function deleteSuperfluousVersions($object): int
157			{
158			$this->object = $object;
159			if (! $this->isValidObject()) {
160			return 0;
161			}
162
163			$this->workoutWhatNeedsDeleting();
164
165			// Base table has Versioned data
166			$totalDeleted = 0;
167
168			// Ugly (borrowed from DataObject::class), but returns all
169			// database tables relating to DataObject
170			$queriedTables = $this->getTablesForClassName();
171			// print_r($this->toDelete[$this->getUniqueKey()]);
172			foreach ($queriedTables as $table) {
173			$overallCount = $this->getCountPerTable($table);
174			if($this->verbose) {
175			$selectToBeDeletedSQL = '
176			SELECT COUNT(ID) AS C FROM "' . $table . '_Versions"
177			WHERE "RecordID" = ' . (int) $this->object->ID;
178			$totalRows = DB::query($selectToBeDeletedSQL)->value();
179			DB::alteration_message('... ... ... Number of rows for current object in '.$table.': '.$totalRows);
180			}
181			if (count($this->toDelete[$this->getUniqueKey()])) {
182			if (true === $this->dryRun) {
183			$selectToBeDeletedSQL = '
184			SELECT COUNT(ID) AS C FROM "' . $table . '_Versions"
185			WHERE
186			"Version" IN (' . implode(',', $this->toDelete[$this->getUniqueKey()]) . ')
187			AND "RecordID" = ' . (int) $this->object->ID;
188
189			$toBeDeletedCount = DB::query($selectToBeDeletedSQL)->value();
190			$totalDeleted += $toBeDeletedCount;
191			if ($this->verbose) {
192			DB::alteration_message('... ... ... running ' . $selectToBeDeletedSQL);
193			DB::alteration_message('... ... ... total rows to be deleted ... ' . $toBeDeletedCount . ' of ' . $overallCount);
194			}
195			} else {
196			$delSQL = '
197			DELETE FROM "' . $table . '_Versions"
198			WHERE
199			"Version" IN (' . implode(',', $this->toDelete[$this->getUniqueKey()]) . ')
200			AND "RecordID" = ' . (int) $this->object->ID;
201
202			DB::query($delSQL);
203			$count = DB::affected_rows();
204			$totalDeleted += $count;
205			$overallCount -= $count;
206			if ($this->verbose) {
207			DB::alteration_message('... ... ... running ' . $delSQL);
208			DB::alteration_message('... ... ... total rows deleted ... ' . $totalDeleted);
209			}
210			}
211			}
212			$this->addCountRegister($table, $overallCount);
213			}
214
215			return $totalDeleted;
216			}
217
218			/**
219			* returns the total number deleted.
220			*
221			* @param DataObject $object
222			* @param bool $verbose
223			*/
224			public function getTemplatesDescription($object): array
225			{
226			$array = [];
227			$this->object = $object;
228			if ($this->isValidObject()) {
229			$myTemplates = $this->findBestSuitedTemplates();
230			if(is_array($myTemplates) && count($myTemplates)) {
231			foreach ($myTemplates as $className => $options) {
232			$runner = new $className($this->object, []);
233			$array[] = $runner->getTitle() . ': ' . $runner->getDescription();
234			}
235			}
236			}
237
238			return $array;
239			}
240
241			public function getCountRegister(): array
242			{
243			return $this->countPerTableRegister;
244			}
245
246			protected function workoutWhatNeedsDeleting()
247			{
248			// array of version IDs to delete
249			// IMPORTANT
250			if(! isset($this->toDelete[$this->getUniqueKey()])) {
251			$this->toDelete[$this->getUniqueKey()] = [];
252			}
253
254			$myTemplates = $this->findBestSuitedTemplates();
255			if(is_array($myTemplates) && !empty($myTemplates)) {
256			foreach ($myTemplates as $className => $options) {
257			$runner = new $className($this->object, $this->toDelete[$this->getUniqueKey()]);
258			if ($this->verbose) {
259			DB::alteration_message('... ... ... Running ' . $runner->getTitle() . ': ' . $runner->getDescription());
260			}
261
262			foreach ($options as $key => $value) {
263			$method = 'set' . $key;
264			$runner->{$method}($value);
265			}
266
267			$runner->run();
268			// print_r($runner->getToDelete());
269			$this->toDelete[$this->getUniqueKey()] += $runner->getToDelete();
270
271			if ($this->verbose) {
272			DB::alteration_message('... ... ... Total versions to delete now ' . count($this->toDelete[$this->getUniqueKey()]));
273			}
274			}
275			}
276			}
277
278			/**
279			* we use this to make sure we never mix up two records.
280			*/
281			protected function getUniqueKey(): string
282			{
283			return $this->object->ClassName . '_' . $this->object->ID;
284			}
285
286			protected function hasStages(): bool
287			{
288			$hasStages = false;
289			if ($this->object->hasMethod('hasStages')) {
290			$oldMode = Versioned::get_reading_mode();
291			if ('Stage.Stage' !== $oldMode) {
292			Versioned::set_reading_mode('Stage.Stage');
293			}
294
295			$hasStages = (bool) $this->object->hasStages();
296			if ('Stage.Stage' !== $oldMode) {
297			Versioned::set_reading_mode($oldMode);
298			}
299			}
300
301			return $hasStages;
302			}
303
304			protected function findBestSuitedTemplates()
305			{
306			if (empty($this->templatesPerClassName[$this->object->ClassName])) {
307			foreach ($this->templatesAvailable as $className => $classesWithOptions) {
308			if (is_a($this->object, $className)) {
309			$this->templatesPerClassName[$this->object->ClassName] = $classesWithOptions;
310
311			break;
312			}
313			}
314
315			if (! isset($this->templatesPerClassName[$this->object->ClassName])) {
316			$this->templatesPerClassName[$this->object->ClassName] = $templates['default'] ?? $classesWithOptions;
			0 ignored issues – show Comprehensibility Best Practice introduced 2022-06-07 03:43 UTC by Report Bug Copy Issue Report The variable `$classesWithOptions` seems to be defined by a `foreach` iteration on line `307`. Are you sure the iterator is never empty, otherwise this variable is not defined? Loading history... Comprehensibility Best Practice introduced 2022-06-07 03:43 UTC by Report Bug Copy Issue Report The variable `$templates` seems to never exist and therefore `isset` should always be `false`. Loading history...
317			}
318			}
319
320			return $this->templatesPerClassName[$this->object->ClassName];
321			}
322
323			protected function isValidObject(): bool
324			{
325			if (false === $this->hasStages()) {
326			if ($this->verbose) {
327			DB::alteration_message('... ... ... Error, no stages', 'deleted');
328			}
329
330			return false;
331			}
332
333			// if (! $this->object->hasMethod('isLiveVersion')) {
334			// return false;
335			// }
336			//
337			// if (false === $this->object->isLiveVersion()) {
338			// if ($this->verbose) {
339			// DB::alteration_message('... ... ... Error, not a live version', 'deleted');
340			// }
341			//
342			// return false;
343			// }
344
345			return $this->object && $this->object->exists();
346			}
347
348			protected function getTablesForClassName(): array
349			{
350			if (empty($this->tablesPerClassName[$this->object->ClassName])) {
351			// $classTables = []
352			// $allClasses = ClassInfo::subclassesFor($this->object->ClassName, true);
353			// foreach ($allClasses as $class) {
354			// if (DataObject::getSchema()->classHasTable($class)) {
355			// $classTables[] = DataObject::getSchema()->tableName($class);
356			// }
357			// }
358			// $this->tablesPerClassName[$this->object->ClassName] = array_unique($classTables);
359
360			$srcQuery = DataList::create($this->object->ClassName)
361			->filter('ID', $this->object->ID)
362			->dataQuery()
363			->query()
364			;
365			$this->tablesPerClassName[$this->object->ClassName] = $srcQuery->queriedTables();
366			}
367
368			return $this->tablesPerClassName[$this->object->ClassName];
369			}
370
371			protected function addCountRegister(string $tableName, int $count): void
372			{
373			$this->countPerTableRegister[$tableName] = $count;
374			}
375
376
377			protected function getCountPerTable(string $table) : int
378			{
379			$overallCount = $this->countPerTableRegister[$table] ?? -1;
380			if($overallCount === -1) {
381			$selectOverallCountSQL = '
382			SELECT COUNT(ID) AS C FROM "' . $table . '_Versions"';
383			$overallCount = DB::query($selectOverallCountSQL)->value();
384			}
385
386			return $overallCount;
387			}
388
389			}
390

sunnysideup / silverstripe-version-pruner

Push — master ( 8f132f...6d656d )

RunForOneObject::gatherTemplates() A

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