Flask 应用程序搜索栏

Question

我正在尝试使用 Flask 实现搜索栏，但是当我输入 url/search 时，出现了 405 错误，Method Not Allowed。

这是我的代码片段。如有任何帮助，我们将不胜感激！

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

因为当您使用 GET 方法手动加载页面时，但 search 控制器只允许 POST。你需要改变

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

到

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

更新

所以基本上最好更换 search 控制器。因为它没有使用 search.html 并且工作不正常。

@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)

同样缩进4个空格，如PEP-8

中所说

Flask 应用程序搜索栏

Flask app search bar

python

search

flask

full-text-search

whoosh