我現在有一個很好的 HTML 表單，可以通過按鈕調用方法。我想要做的是創建幾個調用相同方法的新按鈕，但每個按鈕傳遞不同的參數。具體用例是：我的按鈕現在使用 get_random_album() 檢索隨機相冊。我想制作“爵士”、“古典”和“搖滾”音樂分別調用 get_random_album(genre=<genre>). 的按鈕移動平均維數：from flask import Flask,redirect# Below import commented out for MVE# from discogs import get_random_album# TODO: look at more advanced form builders# Create app instanceapp = Flask(__name__)# Create homepage with [email protected]("/")def home(): return """ <html><body> <h2> Spin yo records </h2> <form action="/query"> <input type='submit' value="I'm Feeling Lucky"> </body></html> """# Backend query to [email protected]("/query")def link(): # return redirect(get_random_album()) # Real implementation commented out # Scratch implementation here def get_random_album(genre=None): url = "https://www.google.com" if genre == 'Jazz': return url + "/search?q=jazz" if genre == 'Classical': return url + "/search?q=classical" if genre == 'Rock': return url + "/search?q=rock" return url return redirect(get_random_album())# Run appif __name__ == "__main__": app.run(debug=True,port=600)實際項目
1 回答
胡子哥哥
TA貢獻1825條經驗 獲得超6個贊
首先創建具有相同name但不同的按鈕value
@app.route("/")
def home():
return """
<html>
<body>
<h2> Spin yo records </h2>
<form action="/query">
<input type="submit" name="selected_genre" value="Jazz">
<input type="submit" name="selected_genre" value="Classic">
<input type="submit" name="selected_genre" value="Rock">
<input type="submit" name="selected_genre" value="I'm Feeling Lucky">
</form>
</body>
</html>
"""
接下來，您可以使用 和按鈕中使用的名稱來選擇valuerequest
from flask import request
import random
@app.route("/query")
def link():
allowed_values = ('Jazz', 'Classic', 'Rock')
genre = request.args.get("selected_genre")
# "I'm Feeling Lucky"
if genre not in allowed_values:
genre = random.choice(allowed_values)
genre = genre.lower()
url = f"https://www.google.com/search?q={genre}"
return redirect(url)
完整示例
from flask import Flask, redirect, request
import random
app = Flask(__name__)
@app.route("/")
def home():
return """
<html>
<body>
<h2> Spin yo records </h2>
<form action="/query">
<input type="submit" name="selected_genre" value="Jazz">
<input type="submit" name="selected_genre" value="Classic">
<input type="submit" name="selected_genre" value="Rock">
<input type="submit" name="selected_genre" value="I'm Feeling Lucky">
</form>
</body>
</html>
"""
@app.route("/query")
def link():
allowed_values = ('Jazz', 'Classic', 'Rock')
genre = request.args.get("selected_genre")
if genre not in allowed_values:
genre = random.choice(allowed_values)
genre = genre.lower()
url = f"https://www.google.com/search?q={genre}"
return redirect(url)
if __name__ == "__main__":
app.run(debug=True,port=600)
在以前的版本中，它在 url 中發送 value ，即。 /query?selected_genre=Rock - 這樣每個人都可以看到它，或者很容易它可以嘗試使用自己的價值。這就是為什么我使用 allowed_values 來阻止它。
要從 url 中隱藏選定的流派，您必須使用：
<form ... method="POST">@app.route(..., methods=['GET', 'POST'])（或methods=['POST']）request.form代替request.args
完整示例
from flask import Flask, redirect, request
import random
app = Flask(__name__)
@app.route("/")
def home():
return """
<html>
<body>
<h2> Spin yo records </h2>
<form action="/query" method="POST">
<input type="submit" name="selected_genre" value="Jazz">
<input type="submit" name="selected_genre" value="Classic">
<input type="submit" name="selected_genre" value="Rock">
<input type="submit" name="selected_genre" value="I'm Feeling Lucky">
</form>
</body>
</html>
"""
@app.route("/query", methods=['GET', 'POST'])
def link():
allowed_values = ('Jazz', 'Classic', 'Rock')
genre = request.form.get("selected_genre")
if genre not in allowed_values:
genre = random.choice(allowed_values)
genre = genre.lower()
url = f"https://www.google.com/search?q={genre}"
return redirect(url)
if __name__ == "__main__":
app.run(debug=True, port=600)
如果您想在按鈕上使用不同的文本但仍發送相同的value，那么您可能需要隱藏 <input> 和 value 但是每個按鈕都需要分開 <form>
@app.route("/")
def home():
return """
<html>
<body>
<h2> Spin yo records </h2>
<form action="/query" method="POST">
<input type="hidden" value="Jazz" name="selected_genre">
<input type="submit" value="The Best Jazz Music">
</form>
<form action="/query" method="POST">
<input type="hidden" value="Classic" name="selected_genre">
<input type="submit" value="The Best Classic Music">
</form>
<form action="/query" method="POST">
<input type="hidden" value="Rock" name="selected_genre">
<input type="submit" value="The Best Rock Music">
</form>
<form action="/query" method="POST">
<input type="hidden" value="random" name="selected_genre">
<input type="submit" value="I'm Feeling Lucky">
</form>
</body>
</html>
"""
或者您必須使用 <button> 而不是 <input>
@app.route("/")
def home():
return """
<html>
<body>
<h2> Spin yo records </h2>
<form action="/query" method="POST">
<button type="submit" name="selected_genre" value="Jazz">The Best Jazz Music</button>
<button type="submit" name="selected_genre" value="Classic">The Best Classic Music</button>
<button type="submit" name="selected_genre" value="Rock">The Best Rock Music</button>
<button type="submit" name="selected_genre" value="random">I'm Feeling Lucky</button>
</form>
</body>
</html>
"""
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