Proctor Level1_5

SimpleProject overview: problem → roles → main entities → key flows (register, book, admin approve).

Viva tip1 minute elevator pitch ready rakho, phir demo.

Simplemodels.py = har table ki class: columns, PK/FK, relationships. Yeh Model layer hai.

Suggested flow1) Classes list karo
2) Har table ka kaam 1 line
3) Relationships (1-M / M-M)
4) Constraints (unique, nullable)

Example

class Lot(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(80), nullable=False)
    spots = db.relationship('Spot', backref='lot', lazy=True)

SimpleDirectives Vue ke special attributes — HTML ko superpower.

v-if/else/show, v-for, v-bind (:), v-on (@), v-model, v-html (XSS), v-cloak, v-slot.

:src = v-bind:src. @click = v-on:click.

Custom directives bhi (v-focus) — course basics kaafi.

Example

<p v-if="ok">Yes</p>
<li v-for="u in users" :key="u.id">{{ u.name }}</li>
<input v-model="email">
<img :src="url">

Project example: List v-for :key. Form v-model. Admin v-if. Image :src.

Viva tip: src ke liye v-bind:src ka shorthand. @click = v-on:click.

SimpleNaya Flask route: URL, method, auth if needed, query, jsonify. Postman pehle.

Examiner number/filter change easy rakhna. CORS. Frontend tabhi jab bole.

Status codes sahi. Password JSON mein nahi.

Examiner 2 cheezein: simple desi line + tumhare project ki exact file.

Pehle ID, GitHub, portal ZIP. Phir run: Redis + Flask + worker + beat + Vue. Feature demo: login, RBAC, cache hit/miss, Celery mail, search.

Line pe ungli: input kahan, kaunsa check, query/cache/task, JSON/UI. Copilot band. Jo nahi kiya honestly bolo + kaise add karte.

Example

@app.route('/api/sum', methods=['POST'])
def sum_num():
    d = request.get_json()
    return jsonify(result=d['a'] + d['b'])

Project example: resources.py new Resource. Test Thunder. Optional Vue fetch.

Simplev-if element DOM se hataata/jodata hai, v-show sirf CSS display toggle karta hai.

v-if='isAdmin' → false ho to element exist hi nahi. Costly toggle, lekin hidden data DOM mein nahi.
v-show='open' → display:none. Fast toggle, element hamesha DOM mein.

Rare condition: v-if. Bar-bar toggle (dropdown): v-show.

SimpleCache = pehli baar hisaab karke copy rakh lo, doosri baar copy dikha do.

Baar-baar same expensive kaam (DB query, counting bookings) mat karo. Result Redis jaise store mein timeout ke saath rakh do.

Cache hit: key mil gayi, DB skip. Cache miss: DB se lao, SET karo, return karo.

Tradeoff: speed vs stale data. Admin naya venue add kare aur cache 50s ka ho to user purani list dekh sakta hai — isliye write pe invalidation zaroori hai.

Browser cache, Flask-Caching, Redis alag layers hain. MAD2 examiner Redis + @cache.cached code dekhta hai.

Example

@cache.cached(timeout=50, query_string=True)
@app.route('/api/shows')
def shows():
    return jsonify([s.serialize() for s in Show.query.all()])

Project example: Admin dashboard counts / venues list cache. Create/update/delete ke baad cache.delete('venues').

Viva tipprint('DB queried') function ke andar laga ke miss/hit demo karo — hit pe print nahi chalega.

SimpleCron/crontab = schedule pe job. Celery Beat app-level cron (daily email). OS crontab alag.

Example

crontab(hour=18, minute=0)  # har din 6pm

SimpleLive UI change: relevant CSS/HTML template kholo — color, margin, flex, bootstrap class. Save + hard refresh.

Example

/* button red */
.btn-primary { background: red; }

/* center navbar item */
.navbar { justify-content: center; }

Viva tipDevTools se pehle try, phir file mein permanent change.

SimpleLive UI change: relevant CSS/HTML template kholo — color, margin, flex, bootstrap class. Save + hard refresh.

Example

/* button red */
.btn-primary { background: red; }

/* center navbar item */
.navbar { justify-content: center; }

Viva tipDevTools se pehle try, phir file mein permanent change.

SimpleDemo 5–7 min ki kahani: saari roles, koi milestone skip nahi, bolte-bolte dikhao.

Examiner list tick karta hai. Crash ho to panic nahi — terminal error padho.

Code tab kholna jab poochhein. Extra uncommitted features mat dikhana agar portal ZIP mein nahi.

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

Project example: Jo statement/parking/jobs/tickets hai uske user+admin journeys.

Viva tipBol: 'Yahan overbooking rokta hoon'. Mandatory features pehle, polish baad.

Simplev-if ghar se nikaal deta hai (DOM se). v-show sirf light band karta hai (display:none).

v-if false → element exist hi nahi — costly create/destroy, lekin secret HTML DOM mein nahi.
v-show → hamesha DOM, CSS hide, toggle tez.

Rare / permission UI: v-if (admin panel). Dropdown bar-bar: v-show.

: shorthand v-bind ka, v-if ka nahi.

Example

<div v-if="isAdmin">Admin panel</div>
<div v-show="open">Dropdown</div>

Project example: Admin links v-if="role==='admin'". FAQ accordion v-show="open".

Viva tipSecurity ke liye sirf v-if kaafi nahi — API 403 bhi chahiye.

SimpleCache = pehli baar hisaab karke copy rakh lo, doosri baar copy dikha do.

Baar-baar same expensive kaam (DB query, counting bookings) mat karo. Result Redis jaise store mein timeout ke saath rakh do.

Cache hit: key mil gayi, DB skip. Cache miss: DB se lao, SET karo, return karo.

Tradeoff: speed vs stale data. Admin naya venue add kare aur cache 50s ka ho to user purani list dekh sakta hai — isliye write pe invalidation zaroori hai.

Browser cache, Flask-Caching, Redis alag layers hain. MAD2 examiner Redis + @cache.cached code dekhta hai.

Example

@cache.cached(timeout=50, query_string=True)
@app.route('/api/shows')
def shows():
    return jsonify([s.serialize() for s in Show.query.all()])

Project example: Admin dashboard counts / venues list cache. Create/update/delete ke baad cache.delete('venues').

Viva tipprint('DB queried') function ke andar laga ke miss/hit demo karo — hit pe print nahi chalega.

SimpleCrontab 5 boxes: minute hour day-of-month month day-of-week.

crontab(hour=18, minute=0) roz 6pm. day_of_month=1 monthly. minute='*/1' har minute test.

Standard cron seconds support nahi. Examiner 'every 10 seconds' bole to schedule=10.0.

Beat process isi dict ko padhti hai. Edit ke baad beat restart.

Example

from celery.schedules import crontab
crontab(hour=18, minute=0)
crontab(minute='*/1')
crontab(day_of_month=1, hour=9, minute=0)

Project example: daily 18:00, monthly 1st 09:00. Viva mein dono 17:20 karke live dikhaya.

Viva tipStandard cron seconds support nahi karta. Har 10 sec ke liye Celery schedule=10.0 use karo.

SimpleBind = ek tarfa poster lagana. Model = form jo typed text wapas data mein likhe.

Display/image/disabled → v-bind. Input/textarea/select → v-model.
Dono mix: <input v-bind:placeholder="hint" v-model="q">.

Directives Vue ke special attributes hain — HTML ko superpower: v-if/v-show, v-for, v-bind (:), v-on (@), v-model.

v-if DOM se hataata/jodta. v-show sirf CSS display. Rare/permission: v-if. Bar-bar toggle: v-show. v-model two-way form. v-bind one-way JS→attribute.

:key v-for pe zaroori warna Vue galat reuse. v-html XSS. Secret UI ke liye sirf v-if kaafi nahi — API 403 bhi.

MAD1 Jinja server HTML. MAD2 yeh directives browser mein reactive.

Example

<p>{{ price }}</p>
<img :src="url">
<input v-model="price">

Project example: Search box v-model q. Result images :src.

SimpleDirectives Vue ke special attributes — HTML ko superpower.

v-if/else/show, v-for, v-bind (:), v-on (@), v-model, v-html (XSS), v-cloak, v-slot.

:src = v-bind:src. @click = v-on:click.

Custom directives bhi (v-focus) — course basics kaafi.

Example

<p v-if="ok">Yes</p>
<li v-for="u in users" :key="u.id">{{ u.name }}</li>
<input v-model="email">
<img :src="url">

Project example: List v-for :key. Form v-model. Admin v-if. Image :src.

Viva tip: src ke liye v-bind:src ka shorthand. @click = v-on:click.

Simpleposition:fixed bottom / flex order / swap footer in App.vue.

Confirm UX. Save refresh.

Pehle 1-line definition, phir related MAD2 layer (Vue SFC / Flask route / models.py / tasks.py / Redis).

4-line formula: input kahan se aaya, auth/validation kaunsa, DB ya cache ya Celery, kya return.

Related mix mat karo — cache ≠ Celery, authentication ≠ authorization, v-if ≠ v-show, Beat ≠ Worker. Follow-up ke liye ek difference ready rakho.

Example

nav { position: fixed; bottom: 0; width: 100%; }

Project example: Navbar.vue or App.vue css.

Simplefilter status=='cancelled' admin. Query ?status=. Modify dashboard only cancelled.

Show only cancelled bookings.

Pehle 1-line definition, phir related MAD2 layer (Vue SFC / Flask route / models.py / tasks.py / Redis).

4-line formula: input kahan se aaya, auth/validation kaunsa, DB ya cache ya Celery, kya return.

Related mix mat karo — cache ≠ Celery, authentication ≠ authorization, v-if ≠ v-show, Beat ≠ Worker. Follow-up ke liye ek difference ready rakho.

Project example: AdminAppointments.vue + API filter.

Simplefilter approved True students. Query fetch only approved students.

status field.

Pehle 1-line definition, phir related MAD2 layer (Vue SFC / Flask route / models.py / tasks.py / Redis).

4-line formula: input kahan se aaya, auth/validation kaunsa, DB ya cache ya Celery, kya return.

Related mix mat karo — cache ≠ Celery, authentication ≠ authorization, v-if ≠ v-show, Beat ≠ Worker. Follow-up ke liye ek difference ready rakho.

Project example: User.query.filter_by(role='student', status='approved')

Project example: User.query.filter_by(role='student', status='approved')