added in loans support, also particular route for book_for_loan without markup used as div content on loan.html page via ajax load
This commit is contained in:
79
loan.py
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79
loan.py
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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
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from wtforms.fields.html5 import DateField
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from __main__ import db, app, ma
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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, unique=True, nullable=False, 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 "<id: {}, firstnames: {}, surname: {}>".format(self.id,self.firstnames, 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' )
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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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def loans():
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loans = Loan.query.all()
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return render_template("loans.html", loans=loans)
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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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def loan(id):
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### DDP: should this be request.form or request.values?
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alert="Success"
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loan_form = LoanForm(request.form)
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if request.method == 'POST' and loan_form.validate_on_submit():
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id = request.form['id']
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loan = Loan.query.get(id)
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try:
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request.form['submit']
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except:
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message="Sorry, Deleting unsupported at present"
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alert="Danger"
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else:
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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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message="Successfully Updated Loan (id={})".format(id)
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else:
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loan = Loan.query.get(id)
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loan_form = LoanForm(request.values, obj=loan)
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message=""
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return render_template("loan.html", loan=loan, alert=alert, message=message, loan_form=loan_form)
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17
templates/books_for_loan.html
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17
templates/books_for_loan.html
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<h3>Loaned Books</h1>
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<table id="book_table" class="table table-striped table-sm" data-toolbar="#toolbar" data-search="true">
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<thead>
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<tr class="thead-light"><th>Title</th></tr>
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</thead>
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<tbody>
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{% for book in books %}
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<tr>
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{% if book.sub_book_num is defined %}
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<td data-sort="{{book.parent_id}}.{{book.sub_book_num}}"><a href="/book/{{book.id}}"> {{book.title}}</a></td>
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{% else %}
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<td data-sort="{{book.id}}"><a href="/book/{{book.id}}">{{book.title}}</a></td>
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{% endif %}
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</tr>
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{% endfor %}
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</tbody>
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</table>
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53
templates/loan.html
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templates/loan.html
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{% extends "base.html" %}
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{% block main_content %}
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<div class="container">
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<h3 class="col-lg-12"><center>Loan</center></h3>
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{% if message|length %}
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<div class="row alert alert-{{alert}}">
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{{message}}
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</div>
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{% endif %}
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<div class="row">
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<div class="col-lg-8">
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<form class="form form-inline col-lg-12" action="" method="POST">
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{{ loan_form.csrf_token }}
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{{ loan_form.id }}
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<div class="form-row col-lg-12">
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{{ loan_form.firstnames.label( class="col-lg-2" ) }}
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{{ loan_form.firstnames( class="form-control col-lg-10" ) }}
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</div class="form-row">
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<div class="form-row col-lg-12">
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{{ loan_form.surname.label( class="col-lg-2" ) }}
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{{ loan_form.surname( class="form-control col-lg-10" ) }}
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</div class="form-row">
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<div class="form-row col-lg-12">
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{{ loan_form.date_lent.label( class="col-lg-2" ) }}
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{{ loan_form.date_lent( class="form-control col-lg-10" ) }}
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</div class="form-row">
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<div class="form-row col-lg-12">
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{{ loan_form.contact_details.label( class="col-lg-2" ) }}
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{{ loan_form.contact_details( class="form-control col-lg-10", rows="5" ) }}
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</div class="form-row">
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<div class="row col-lg-12">
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<br>
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</div class="row">
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<div class="form-row col-lg-12">
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{{ loan_form.delete( class="btn btn-outline-danger col-lg-2" )}}
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{{ loan_form.submit( class="btn btn-primary col-lg-2" )}}
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</div class="form-row">
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</form>
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</div class="col-lg-8">
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<div class="col-lg-4">
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<div id="books_for_loan_bit">
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</div id="books_for_loan_bit">
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</div class="col-lg-4">
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</div class="row">
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</div class="container">
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{% endblock main_content %}
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{% block script_content %}
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<script>
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$(document).ready( function() {
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$("#books_for_loan_bit").load("/books_for_loan/" + {{loan_form.data.id}})
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} )
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</script>
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{% endblock script_content %}
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16
templates/loans.html
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16
templates/loans.html
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{% extends "base.html" %}
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{% block main_content %}
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<h3>Loans</h3>
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<table id="book_table" class="table table-striped table-sm" data-toolbar="#toolbar" data-search="true">
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<thead>
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<tr class="thead-light"><th>Surname</th><th>Firstname(s)</th><th>Date Lent</th><th>Contact Details</th></tr>
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</thead>
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<tbody>
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{% for loan in loans %}
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<tr><td><a href="{{url_for('loan', id=loan.id )}}">{{loan.surname}}</a></td><td>{{loan.firstnames}}</td><td>{{loan.date_lent}}</td>
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<td>{{loan.contact_details}}</td></tr>
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{% endfor %}
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</tbody>
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</table>
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{% endblock main_content %}
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