115 lines
5.6 KiB
Python
115 lines
5.6 KiB
Python
from wtforms import SubmitField, StringField, HiddenField, validators, TextAreaField
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from flask_wtf import FlaskForm
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from flask import request, render_template, redirect
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from flask_login import login_required, current_user
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from wtforms import DateField
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from main import db, app, ma
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from datetime import date
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from sqlalchemy import Sequence
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from sqlalchemy.exc import SQLAlchemyError
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from status import st, Status
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################################################################################
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# Class describing Loan in the database, and via sqlalchemy, connected to the DB as well
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################################################################################
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class Loan(db.Model):
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id = db.Column(db.Integer, db.Sequence('loan_id_seq'), primary_key=True )
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surname = db.Column(db.String(30), unique=False, nullable=False)
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firstnames = db.Column(db.String(50), unique=False, nullable=False)
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contact_details = db.Column(db.String(256), unique=False, nullable=False)
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date_lent = db.Column(db.Date, nullable=False )
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def __repr__(self):
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return f"<id: {self.id}, firstnames: {self.firstnames}, surname: {self.surname}>"
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################################################################################
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# Helper class that inherits a .dump() method to turn class Loan into json / useful in jinja2
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################################################################################
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class LoanSchema(ma.SQLAlchemyAutoSchema):
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class Meta:
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model = Loan
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ordered = True
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################################################################################
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# Helper class that defines a form for loan, used to make html <form>, with field validation (via wtforms)
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################################################################################
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class LoanForm(FlaskForm):
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id = HiddenField()
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firstnames = StringField('FirstName(s):', [validators.DataRequired()])
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surname = StringField('Surname:', [validators.DataRequired()])
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contact_details = TextAreaField('Contact Details:', [validators.DataRequired()])
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surname = StringField('Surname:', [validators.DataRequired()])
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date_lent = DateField('Date Lent:', format='%Y-%m-%d', default=date.today(), validators=[validators.DataRequired()] )
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submit = SubmitField('Save' )
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delete = SubmitField('Delete' )
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################################################################################
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# Routes for loan data
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#
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# /loans -> GET only -> prints out list of all loans
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################################################################################
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@app.route("/loans", methods=["GET"])
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@login_required
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def loans():
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loans = Loan.query.all()
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return render_template("loans.html", loans=loans, alert=st.GetAlert(), message=st.GetMessage())
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################################################################################
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# /loan -> GET/POST -> creates a new loan type and when created, takes you back to /loans
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################################################################################
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@app.route("/loan", methods=["GET", "POST"])
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@login_required
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def new_loan():
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form = LoanForm(request.form)
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page_title='Create new Loan'
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if 'firstnames' not in request.form:
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return render_template("loan.html", form=form, page_title=page_title )
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else:
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loan = Loan( firstnames=request.form["firstnames"], surname=request.form["surname"], date_lent=request.form["date_lent"], contact_details=request.form["contact_details"] )
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try:
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db.session.add(loan)
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db.session.commit()
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st.SetMessage( f"Created new Loan (id={loan.id})" )
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return redirect( '/loans' )
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except SQLAlchemyError as e:
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st.SetAlert( "danger" )
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st.SetMessage( f"<b>Failed to add Loan:</b> {e.orig}" )
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return render_template("edit_id_name.html", form=form, page_title=page_title, alert=st.GetAlert(), message=st.GetMessage() )
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################################################################################
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# /loan/<id> -> GET/POST(save or delete) -> shows/edits/delets a single loan
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################################################################################
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@app.route("/loan/<id>", methods=["GET", "POST"])
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@login_required
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def loan(id):
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### DDP: should this be request.form or request.values?
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form = LoanForm(request.form)
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page_title='Edit Loan'
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if request.method == 'POST' and form.validate():
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loan = Loan.query.get(id)
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try:
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if 'delete' in request.form:
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from main import Book_Loan_Link
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st.SetMessage( f"Successfully deleted (id={loan.id}, who={loan.firstnames} {loan.surname})" )
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Book_Loan_Link.query.filter(Loan.id==id).delete()
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Loan.query.filter(Loan.id==id).delete()
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if 'submit' in request.form:
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st.SetMessage( f"Successfully Updated Loan (id={id})" )
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loan.firstnames = request.form['firstnames']
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loan.surname = request.form['surname']
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loan.surname = request.form['surname']
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loan.contact_details = request.form['contact_details']
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loan.date_lent = request.form['date_lent']
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db.session.commit()
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return redirect( '/loans' )
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except SQLAlchemyError as e:
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st.SetAlert( "danger" )
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st.SetMessage( f"<b>Failed to modify Loan:</b> {e.orig}" )
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return render_template("edit_id_name.html", form=form, page_title=page_title, alert=st.GetAlert(), message=st.GetMessage() )
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else:
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loan = Loan.query.get(id)
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form = LoanForm(request.values, obj=loan)
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return render_template("loan.html", loan=loan, form=form, page_title=page_title)
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