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57 lines
5.4 KiB
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57 lines
5.4 KiB
Plaintext
---
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title: نظرة عامة
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description: قم بتهيئة التطبيق نفسه — هويته، والأذونات الافتراضية، وما الذي يعمل في وقت التثبيت.
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icon: screwdriver-wrench
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---
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طبقة **الإعدادات (config layer)** لتطبيق Twenty هي ما يصف التطبيق *للمنصة* — هويته، والأذونات التي يمتلكها، والكود الذي يعمل أثناء التثبيت أو الترقية. هذه التصريحات لا تضيف أشكال بيانات جديدة أو سلوكًا وقت التشغيل؛ بل تخبر Twenty *من هو التطبيق* و*كيفية إعداده*.
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```text
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┌────────────────────────────────────────────────────────┐
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│ Application — identity, default role, variables, │
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│ marketplace metadata │
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│ │
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│ ┌──────────────────────────────────────────────────┐ │
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│ │ Role — what the app's logic functions can read │ │
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│ │ and write (referenced by Application) │ │
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│ └──────────────────────────────────────────────────┘ │
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└────────────────────────────────────────────────────────┘
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│
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▼ (at install / upgrade time)
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┌──────────────────────────────────┐
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│ Pre-install hook │ before metadata migration
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└──────────────────────────────────┘
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┌──────────────────────────────────┐
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│ Post-install hook │ after metadata migration
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└──────────────────────────────────┘
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│
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▼ (at uninstall time)
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┌──────────────────────────────────┐
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│ Uninstall hook │ before app removal
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└──────────────────────────────────┘
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```
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## في هذا القسم
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<CardGroup cols={2}>
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<Card title="تكوين التطبيق" icon="rocket" href="/l/ar/developers/extend/apps/config/application">
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`defineApplication` — الهوية، الدور الافتراضي، المتغيرات، والبيانات الوصفية لسوق التطبيقات.
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</Card>
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<Card title="الأدوار والصلاحيات" icon="shield-halved" href="/l/ar/developers/extend/apps/config/roles">
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`defineRole` — حدِّد ما يمكن لوظائف منطق التطبيق قراءته وكتابته.
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</Card>
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<Card title="خطافات التثبيت" icon="wrench" href="/l/ar/developers/extend/apps/config/install-hooks">
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`definePreInstallLogicFunction` و`definePostInstallLogicFunction` و`defineUninstallLogicFunction` — نسخ البيانات احتياطيًا، تهيئة القيم الافتراضية، التحقق من صحة الترقيات، والتنظيف عند الإزالة.
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</Card>
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</CardGroup>
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## كيفية ترابط الأجزاء
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* **التطبيق (Application)** هو نقطة الدخول. يحتوي كل تطبيق على استدعاء واحد فقط `defineApplication()`، ويشير إلى **دور (Role)** واحد باعتباره الدور الافتراضي له.
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* يتحكم **الدور** في ما يمكن لوظائف منطق التطبيق ومكوّنات الواجهة الأمامية قراءته وكتابته. اتبع مبدأ أقل امتياز ممكن: امنح فقط الصلاحيات التي يحتاجها الكود فعليًا.
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* تعمل **خطافات التثبيت** أثناء التثبيت أو الترقية — ما قبل التثبيت قبل ترحيل البيانات الوصفية (كي تتمكن من رفض ترقية محفوفة بالمخاطر)، وما بعد التثبيت بعد الترحيل (كي تتمكن من تهيئة بيانات افتراضية وفق المخطط الجديد). يعمل خطاف إزالة التثبيت مباشرة قبل إزالة التطبيق، بحيث يمكنه تنظيف الموارد الخارجية بينما تظل بيانات التطبيق قابلة للقراءة.
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<Note>
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تشارك خطافات التثبيت وقت تشغيل [وظيفة المنطق](/l/ar/developers/extend/apps/logic/logic-functions) — نفس توقيع المعالج (handler signature)، ونفس متغيرات البيئة، ونفس عميل واجهة برمجة التطبيقات (typed API client) — لكنها تُصرّح باستخدام دوال تعريف خاصة بها وتوجد خارج نموذج المشغلات العادي (HTTP، و cron، وأحداث قاعدة البيانات).
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</Note>
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