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rochacbruno/news_app.py

Last active October 21, 2020 18:42
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Com upload de imagem na noticia
Raw
news_app.py
# coding: utf-8
import os
from werkzeug import secure_filename
from flask import Flask, request, url_for, current_app
from db import noticias
app = Flask("wtf")
PROJECT_ROOT = os.path.abspath(os.path.dirname(__file__))
app.config['MEDIA_ROOT'] = os.path.join(PROJECT_ROOT, 'media_files')
# por enquanto vamos usar um template html hardcoded
# mas calma! em breve falaremos sobre os templates com Jinja2
base_html = u"""
<html>
<head>
<title>{title}</title>
</head>
<body>
<img src="{logo_url}" />
<hr />
{body}
</body>
</html>
"""
@app.route("/noticias/cadastro", methods=["GET", "POST"])
def cadastro():
if request.method == "POST":
dados_do_formulario = request.form.to_dict()
imagem = request.files.get('imagem')
if imagem:
filename = secure_filename(imagem.filename)
path = os.path.join(current_app.config['MEDIA_ROOT'], filename)
imagem.save(path)
dados_do_formulario['imagem'] = filename
nova_noticia = noticias.insert(dados_do_formulario)
return u"""
<h1>Noticia id %s inserida com sucesso!</h1>
<a href="%s"> Inserir nova notícia </a>
""" % (nova_noticia, url_for('cadastro'))
else: # GET
formulario = u"""
<form method="post" action="/noticias/cadastro"
enctype="multipart/form-data">
<label>Titulo:<br />
<input type="text" name="titulo" id="titulo" />
</label>
<br />
<label>Texto:<br />
<textarea name="texto" id="texto"></textarea>
</label>
<br />
<label> Imagem:<br />
<input type="file" name="imagem" id="imagem" />
</label>
<input type="submit" value="Postar" />
</form>
"""
return base_html.format(
title=u"Inserir nova noticia",
body=formulario,
logo_url=url_for('static', filename='generic_logo.gif')
)
@app.route("/")
def index():
noticia_template = u"""
<a href="/noticia/{noticia[id]}">{noticia[titulo]}</a>
"""
# it's a kind of magic :)
todas_as_noticias = [
noticia_template.format(noticia=noticia)
for noticia in noticias.all()
]
return base_html.format(
title=u"Todas as notícias",
body=u"<br />".join(todas_as_noticias),
logo_url=url_for('static', filename='generic_logo.gif')
)
@app.route("/noticia/<int:noticia_id>")
def noticia(noticia_id):
noticia = noticias.find_one(id=noticia_id) # query no banco de dados
noticia_html = u"""
<h1>{titulo}</h1>
<p>{texto}</p>
""".format(**noticia) # remember, Python is full of magic!
return base_html.format(
title=noticia['titulo'],
body=noticia_html,
logo_url=url_for('static', filename='generic_logo.gif')
)
if __name__ == "__main__":
app.run(debug=True, use_reloader=True)
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