109 lines
5.4 KiB
Python
109 lines
5.4 KiB
Python
from wtforms import SubmitField, StringField, HiddenField, validators, Form
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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 main import db, app, ma
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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 Author in the database, and via sqlalchemy, connected to the DB as well
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################################################################################
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class Author(db.Model):
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id = db.Column(db.Integer, db.Sequence('author_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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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 Author into json / useful in jinja2
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################################################################################
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class AuthorSchema(ma.SQLAlchemyAutoSchema):
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class Meta:
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model = Author
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ordered = True
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################################################################################
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# Helper class that defines a form for author, used to make html <form>, with field validation (via wtforms)
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################################################################################
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class AuthorForm(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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submit = SubmitField('Save' )
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delete = SubmitField('Delete' )
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################################################################################
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# Routes for author data
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#
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# /authors -> GET only -> prints out list of all authors
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################################################################################
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@app.route("/authors", methods=["GET"])
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@login_required
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def authors():
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authors = Author.query.all()
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return render_template("authors.html", authors=authors, alert=st.GetAlert(), message=st.GetMessage() )
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################################################################################
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# /author -> GET/POST -> creates a new author type and when created, takes you back to /authors
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################################################################################
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@app.route("/author", methods=["GET", "POST"])
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@login_required
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def new_author():
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form = AuthorForm(request.form)
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page_title='Create new Author'
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if 'surname' not in request.form:
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return render_template("edit_id_name.html", form=form, page_title=page_title )
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else:
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author = Author( surname=request.form["surname"], firstnames=request.form["firstnames"] )
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try:
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db.session.add(author)
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db.session.commit()
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st.SetMessage( f"Created new Author ({author.surname}, {author.firstnames})" )
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return redirect( '/authors' )
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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 Author:</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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# /author/<id> -> GET/POST(save or delete) -> shows/edits/delets a single author
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################################################################################
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@app.route("/author/<id>", methods=["GET", "POST"])
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@login_required
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def author(id):
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### DDP: should this be request.form or request.values?
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form = AuthorForm(request.form)
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page_title='Edit Author'
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if request.method == 'POST' and form.validate():
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try:
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author = Author.query.get(id)
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if 'delete' in request.form:
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st.SetMessage( f"Successfully deleted Author: ({author.surname}, {author.firstnames})" )
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author = Author.query.filter(Author.id==id).delete()
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if 'submit' in request.form:
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st.SetMessage( f"Successfully Updated Author: (From: {author.surname}, {author.firstnames}" )
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author.surname = request.form['surname']
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author.firstnames = request.form['firstnames']
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st.AppendMessage( f" To: {author.surname}, {author.firstnames})" )
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db.session.commit()
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return redirect( '/authors' )
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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 Author:</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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author = Author.query.get(id)
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form = AuthorForm(request.values, obj=author)
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return render_template("edit_id_name.html", object=author, form=form, page_title = page_title, alert=st.GetAlert(), message=st.GetMessage() )
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################################################################################
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# helper fund to GetAuthors -> author_list -> jinja2 for author drop-down in book.html
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################################################################################
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def GetAuthors():
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return Author.query.order_by('surname','firstnames').all()
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