Display suite - node displays preprocess

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Display suite - node displays preprocess

A mai napon a display_suite apira épülő node_displays modul preprocess rendszerével vívtam vérre menő, halálos küzdelmet. Már közel a végső és teljes megalázó vereség határán, darabokra szedve a display_suite és node_display kódját, jött a megvilágosodás, és a victory!

De nézzük a konkrét példát. Minek nekem preprocesst túrni node_displays-ben, amikor saját maga kvázi egy hatalmas node megjelenítési előfeldogozó?

A feladat egyfajta megjelenítési workflow leképzése volt: Adott egy tartalomtípus, amibe küldhetnek videót, képet, audiót, és csak hogy szaftosabb és vértől csöpögőbb legyen a kihívás, mehet bele egy node_reference alapú galéria csatolása is.

Így jött ki a következő mátrix:
HA teaser VAGY sticky a megjelenés (build_mode, hogy a haladók is értsék. :))
ÉS van kép ÉS van videó ÉS van audió ÉS van galéria akkor a teaserben a KÉP jelenik meg
ÉS NINCS kép ÉS van videó ÉS van audió ÉS van galéria akkor a teaserben a VIDEÓ jelenik meg
ÉS NINCS kép ÉS NINCS videó ÉS van audió ÉS van galéria akkor a teaserben az AUDIÓ jelenik meg
ÉS NINCS kép ÉS NINCS videó NINCS audió ÉS van galéria akkor a teaserben az GALÉRIA jelenik meg

Ezt a kis apróságot lehet, hogy node_displays nélkül könnyebben megoldottam volna, de most ezt a lapot osztották, már amúgyis régen meg akartam vele barátkozni.

Mivel amúgy is telenyomtam már a node_displays-t saját mezőkkel saját modulból, ezért gondoltam a rakás mező mellett elfér még pár hook is, így nem a sminket bántom. Végignézve a display_suite API-t persze kiderült, hogy nekem egy sem jó, még a kisnyuszi két füle közé is be tudok alterelni, de a node előkészítésébe nem. Egy kósza gondolat erejéig szóba jött még a hook_nodeapi is, de neeeem! Most a sárkánnyal küzdök, nem hátrálok vissza core anyácskánk szoknyája alá!

Következő lépésként a sminkesek fegyvertárának F117-esét vetettem be, a preprocesst! Ezt csak azért ilyen későn, mert pár napja volt egy hamvába holt próbálkozásom nem túl sok sikerélménnyel, ami sajnos azt az előítéletet ültette a fejembe, hogy márpedig preprocessel nem lehet.
Pedig de.

A zavart az erőben az okozta, hogy egy sima mezei node preprocessként már egy kész $content változó kerül bele a tpl-be. Azt átírni kb annyit jelent, hogy minden egyes renderelt mezőt összeszedek sorrendbe, összefűzöm, és odaadom a $contentnek. Nade pont azért raktam fel a node_displayst, hogy én ezt szépen UI-n tudjam huzigálni, ne kelljen már agyonvariálni preprocessben.

A dokumentációban mászkálva arra lettem figyelmes, hogy van ám a node_displaysnek saját node preprocesse.
Nosza, próbáljuk ki, és itt jött ám rám a sírásrívás megint, hiszen itt is egy fullra renderelt $content fogadott, hát hogy a rákba szedjem ki ebből a mezőket, ami nekem nem kell??

És itt jött egy lc a #drupal.hu chat csatornán:
[geshifilter-code][09:15]<butabot> Gratulálok, sikeresen pörgettel egyet a lammerszámlálón. A jelenlegi állás: hetvenegyezer-hétszáznégy.[/geshifilter-code]

Annyira megörültem, hogy van nd_preprocessünk, hogy csak éppen a benne meghívott függvényt nem néztem meg, ahol a rosetti kő található:

[geshifilter-drupal6]$content = ds_render_content($node, 'nd', $vars);[/geshifilter-drupal6]

Röviden a lényeg: Bárhogy tekergetjük a ui-n a node_display megjelenítéseket, azok egy nd_mező_neve_rendered változóban jutnak el a node_preprocessbe. A node_display saját preprocesse ugyan már lerenderelteti a $contentet, de ez nem akadályozhat meg minket abban, hogy újra meghívjuk, hogy kell.

Ennek értelmében a feladatmegoldás kódjának egy részlete:
[geshifilter-drupal6] function ds_custom_fields_preprocess_node(&$vars, $hook) { _nd_preprocess_node($vars, $hook); $node = $vars['node']; if ($vars['render_by_ds'] && ($vars['build_mode'] == 'sticky' || $vars['build_mode'] == 'teaser')) { if ($node->field_main_picture['0']['fid']) { unset ($vars['field_audio_link_rendered']); unset ($vars['field_video_link_rendered']); } // és még sokan mások $content = ds_render_content($node, 'nd', $vars); $vars['content'] = $content; } } [/geshifilter-drupal6]

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