Flask應用搜索欄

Question

我想用Flask實現搜索欄，但是當我輸入url/search時，出現了405錯誤，方法不允許。

這是我的代碼片段。任何幫助，將不勝感激！

forms.py

from wtforms import StringField 
from wtforms.validators import DataRequired 

class SearchForm(Form): 
    search = StringField('search', [DataRequired()]) 
    submit = SubmitField('Search', 
         render_kw={'class': 'btn btn-success btn-block'}) 

views.py

from flask_login import login_required 
from forms import SearchForm 
from models import User 

@app.route('/') 
def index(): 
    if current_user.is_authenticated: 
    return redirect(url_for('profile')) 
    return render_template('index.html') 

@app.route('/profile', methods=['GET', 'POST']) 
@login_required 
def profile(): 
    # some code to display user profile page 

@app.route('/search', methods=['POST']) 
@login_required 
def search(): 
    form = SearchForm() 
    if not form.validate_on_submit(): 
    return redirect(url_for('index')) 
    return redirect((url_for('search_results', query=form.search.data))) 

@app.route('/search_results/<query>') 
@login_required 
def search_results(query): 
    results = User.query.whoosh_search(query).all() 
    return render_template('search_results.html', query=query, results=results) 

models.py

from flask_sqlalchemy import SQLAlchemy 
from flask_whooshalchemy import whoosh_index 
from app import app 

db = SQLAlchemy() 

class User(db.model): 
    __searchable__ = ['name'] 
    id = db.Column(db.Integer, primary_key=True) 
    name = db.Column(db.String(64)) 

whoosh_index(app, User) 

search.html

{% extends 'layouts/base.html' %} 
{% set page_title = 'Search' %} 
{% block body %} 
    <div> 
     {{ render_form(url_for('search'), form) }} # note: render_form is some marco from another .html file 
    </div> 
{% endblock %} 

Answer 1

由於當手動您使用GET方法加載網頁，但僅POST被允許用於search控制器。您需要更改

@app.route('/search', methods=['POST']) 

到

@app.route('/search', methods=['GET', 'POST']) 

UPDATE

所以基本上這是更好地改變你的search控制器。因爲它沒有使用search.html而且工作不正確。

@app.route('/search', methods=['GET', 'POST']) 
@login_required 
def search(): 
    form = SearchForm() 
    if request.method == 'POST' and form.validate_on_submit(): 
     return redirect((url_for('search_results', query=form.search.data))) # or what you want 
    return render_template('search.html', form=form) 

也使縮進4個空格，因爲它在PEP-8