As a Flask beginner, I can't understand how request.args
is used. I read somewhere that it is used to return values of query string (correct me if I'm wrong) and how many parameters request.args.get()
takes.
I know that when I have to store submitted form data, I can use fname = request.form.get("firstname")
. Here, only one parameter is passed, whereas the code below takes two parameters.
@app.route("/")
def home():
cnx = db_connect()
cur = cnx.cursor()
output = []
page = request.args.get('page', 1)
try:
page = int(page)
skip = (page-1)*4
except:
abort(404)
stmt_select = "select * from posts limit %s, 4;"
values=[skip]
cur.execute(stmt_select,values)
x=cur.fetchall()
for row in reversed(x):
data = {
"uid":row[0],
"pid":row[1],
"subject":row[2],
"post_content":row[3],
"date":datetime.fromtimestamp(row[4]),
}
output.append(data)
next = page + 1
previous = page-1
if previous<1:
previous=1
return render_template("home.html", persons=output, next=next, previous=previous)
Please explain why it takes two parameters, and then what its use is.
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