Proctor Level1_102

SimpleDemo script pehle se practice: 5–7 min, Admin + User roles, saare mandatory features.

Suggested flow1) Register/login user
2) Admin login — CRUD
3) Approval/blacklist
4) Booking/apply + edge case
5) Search
6) Logout

Viva tipBolte-bolte dikhao. Code tab kholna jab poochhein.

Yeh project-specific feature add/modify hai. 4 layers touch karo: model, route, template, validation.

1) Data chahiye to models.py mein column/relationship + DB update (ALTER / migrate / create_all).
2) Route: GET pe form/page, POST pe request.form se save, flash + redirect.
3) Template: input name=... Jinja se {{ obj.field }} display.
4) Rule: duplicate, range, role check backend pe.

Example naya field 'city':

user.city = db.Column(db.String(50))
user.city = request.form.get('city')
<input name='city'>  ...  {{ user.city }}

SimpleCode explain formula: input kya aaya → auth/validation → DB change → response/UI.

Viva tipFunction signature + 3-4 important lines + edge case.

SimpleMVC: Model=data (SQLAlchemy), View=Jinja HTML, Controller=Flask routes/business logic.

Flask loosely MVC follow karta hai — routes controllers, templates views, models.py models.

SimpleDemo script pehle se practice karo, 5-7 minute, saari roles.

Suggested flow

1) Register/login user 2) Admin login — CRUD 3) Approval/blacklist 4) Booking/apply 5) Search 6) Validation edge (slots 0, duplicate) 7) Logout
Bolte-bolte dikhao: 'Yahan overbooking rokta hoon'. Code tab kholna jab poochhein.
Crash ho to debug calmly: terminal error, typo, DB path.
Mandatory features skip mat karna — examiner list tick karta hai.

Yeh project-specific feature add/modify hai. 4 layers touch karo: model, route, template, validation.

1) Data chahiye to models.py mein column/relationship + DB update (ALTER / migrate / create_all).
2) Route: GET pe form/page, POST pe request.form se save, flash + redirect.
3) Template: input name=... Jinja se {{ obj.field }} display.
4) Rule: duplicate, range, role check backend pe.

Example naya field 'city':

user.city = db.Column(db.String(50))
user.city = request.form.get('city')
<input name='city'>  ...  {{ user.city }}

Yeh project-specific feature add/modify hai. 4 layers touch karo: model, route, template, validation.

1) Data chahiye to models.py mein column/relationship + DB update (ALTER / migrate / create_all).
2) Route: GET pe form/page, POST pe request.form se save, flash + redirect.
3) Template: input name=... Jinja se {{ obj.field }} display.
4) Rule: duplicate, range, role check backend pe.

Example naya field 'city':

user.city = db.Column(db.String(50))
user.city = request.form.get('city')
<input name='city'>  ...  {{ user.city }}

SimpleDuplicate/overbook rokne ke liye DB constraint + route check dono.

Pehle query: Booking.query.filter_by(user_id=uid, trek_id=tid).first()
Agar exists: flash('Already booked'); return
Slots: if trek.available <= 0: reject else trek.available -= 1; commit
Race condition: unique(user_id, trek_id) constraint — do tabs se double click pe bhi ek hi row.
Blacklist: login pe is_blacklisted check.
Active drive limit: if Company ke paas status=open drive hai to naya mat banne do.

SimpleMVC = Model-View-Controller. Code ko 3 hisson mein baant ta hai taaki mix na ho.

Model: data + DB. models.py — User, Trek, Booking classes.
View: jo user dekhta hai. templates/*.html + Jinja.
Controller: beech ka logic. routes / app.py — request lo, model se data, view ko do.

Example flow (register):
Browser form POST → Controller register() → User model save → redirect → View dashboard.html

Draw: Browser → Controller → Model → DB, phir Controller → View → Browser.
ORM na ho to bhi MVC ho sakta hai — Model raw SQL functions ho sakte hain. Structure matter karta hai, library nahi.
MVP/MVVM doosri architectures hain; MAD1 mein MVC expected hai.