Question

我试图让我的按钮重定向到我的程序中的一个路径，其中包含一些变量值以动态生成pdf，pdf生成单独工作，但是当我提交表单而不是转到genreport/{{lid}/{{userID}}时我转到genreport//?userID=3

我的表单的代码

<form action="/genreport/{{lid}}/{{userID}}">
          <input type="number" placeholder="ID" id="userID" name="userID">
      <select>
          <option value="1" id="lid" name="lid">{{letter.description}}</option>
      </select>
          <input type="submit" value="Generate Report">
      </form>
  </div>

我路线的代码

@app.route('/genreport/<lid>/<userID>')
def pdf_template():
    lid = request.form['lid']
    userID = request.form['userID']
    policy = Policy.query.get(request.form[userID])
    letter = Letter.query.get(request.form[lid])
    rendered = render_template_string(letter.template, policy=policy, lid=lid, userID=userID)
    pdf = pdfkit.from_string(rendered, False)

    response = make_response(pdf)
    response.headers['Content-Type'] = 'application/pdf'
    response.headers['Content-Disposition'] = 'inline; filename=output.pdf'

    return response

任何帮助都会非常感激，因为我在这个问题上花了很多时间。如果需要更多信息，我可以提供。

修改

以下是我申请的所有路线以及自我发布问题后所做的更改

@app.route('/')
@login_required
def index():
    return render_template('index.html')


@app.route('/reports', methods=['GET','POST'])
@login_required
def reports():
    if request.method == "GET":
        return render_template('reports.html')
    letter = Letter.query.get(1)
    first = request.form['searchFirst']
    contact = Contact.query.filter_by(first=first).first()
    return render_template('results.html', contact=contact, letter=letter)


@app.route('/results', methods=['GET','POST'])
@login_required
def results():
    return render_template('results.html')


@app.route('/management')
@login_required
def management():
    return render_template('management.html')


@app.route('/history')
@login_required
def history():
    return render_template('history.html')


@app.route('/settings')
@login_required
def settings():
    return render_template('settings.html')


@app.route('/login', methods=['GET','POST'])
def login():
    if request.method == 'GET':
        return render_template('login.html')
    username = request.form['inputEmail']
    password = request.form['inputPassword']
    remember_me = False
    if 'remember_me' in request.form:
        remember_me = True
    registered_user = User.query.filter_by(username=username, password=password).first()
    if registered_user is None:
        flash('Username or Password is invalid', 'error')
        return redirect(url_for('login'))
    login_user(registered_user, remember=remember_me)
    flash('Logged in Successfully')
    return redirect(request.args.get('next') or url_for('index'))


@app.route('/logout')
def logout():
    logout_user()
    return redirect(url_for('index'))


@app.route('/signup', methods=['GET', 'POST'])
def signup():
    if request.method == 'GET':
        return render_template('signup.html')
    user = User(request.form['inputFirst'], request.form['inputLast'], request.form['inputEmail'], request.form['dob'], request.form['inputPassword', request.form['inputStreet'],request.form['inputState'],request.form['inputCity'],request.form['inputZip'],request.form['inputPhone']])
    db.session.add(user)
    db.session.commit()
    flash('User successfully created!')
    return redirect(url_for('login'))


@app.route('/profile/<name>')
@login_required
def profile():
    return render_template('profile.html', name=name)


@app.route('/admin')
@login_required
def admin():
    return render_template('admin.html')


@app.route('/genreport/<lid>/<id>')
def pdf_template():
    policy = Policy.query.get(request.form['userID'])
    letter = Letter.query.get(request.form['lid'])
    rendered = render_template_string(letter.template, policy=policy, letter=letter)
    pdf = pdfkit.from_string(rendered, False)

    response = make_response(pdf)
    response.headers['Content-Type'] = 'application/pdf'
    response.headers['Content-Disposition'] = 'inline; filename=output.pdf'

    return response

Answer 1

如果使用参数化网址，则可以使用带参数的函数：

   public class Product extends ConsoleProgram
{
    public void run()
    {
        int intValue = 5;
        double doubleValue = 2.5;

        int product1 = product(intValue, intValue);
        System.out.println(product1);

        // Use method overloading to define methods 
        // for each of the following method calls

        double product2 =  product(doubleValue , doubleValue);
        System.out.println(product1);

        int product3 = product(intValue * intValue, intValue);
        System.out.println(product1);

        double product4 = product(intValue, doubleValue);
        System.out.println(product1);

        double product5 = product(doubleValue, intValue);
        System.out.println(product1);

        double product6 = product(doubleValue *doubleValue, doubleValue);
        System.out.println(product1);
    }

    public int product(int one, int two)
    {
        return one * two;
    }

}

第二个选项使用url参数，你应该使用request.args.get：

# url to call will be:
# genreport/1/2
@app.route('/genreport/<lid>/<userID>')
def pdf_template(lid, userID):
    print(lid, userID)
    # lid = request.form['lid']
    # userID = request.form['userID']

Answer 2

解决方案是使用url_for 为您的表单构建网址

您在表单中需要的是：

<form action="{{url_for('app.pdf_template', userID=1, lid=1)}}">
          <input type="number" placeholder="ID" id="userID" name="userID">
      <select>
          <option value="1" id="lid" name="lid">{{letter.description}}</option>
      </select>
          <input type="submit" value="Generate Report">
      </form>
  </div>

和路线：

@app.route('/genreport/<lid>/<userID>')
def pdf_template(lid, userID):
    lid = request.form[lid]
    userID = request.form[userID]
    policy = Policy.query.get(userId)
    letter = Letter.query.get(lid)
    rendered = render_template_string(letter.template, policy=policy, lid=lid, userID=userID)
    pdf = pdfkit.from_string(rendered, False)

    response = make_response(pdf)
    response.headers['Content-Type'] = 'application/pdf'
    response.headers['Content-Disposition'] = 'inline; filename=output.pdf'

    return response

具有可变输入

2 个答案: