FastAPI - 必填字段，缺少值

Question

I receive the error below, when I deploy my app to Heroku:当我将我的应用程序部署到 Heroku 时，我收到以下错误：

{
   "detail": [
      {
         "loc": [
               "body",
               "id"
         ],
         "msg": "field required",
         "type": "value_error.missing"
      }
   ]
}

and log in the console:并登录控制台：

22-03-05T19:45:12.863425+00:00 heroku[router]: at=info method=GET path="/" host=wallet-reputation.herokuapp.com request_id=51780a1f-491a-4dd6-a8c0-164b41745405 fwd="95.175.20.47" dyno=web.1 connect=0ms service=4ms status=422 bytes=248 protocol=http

This is my Fastapi app:这是我的 Fastapi 应用程序：

@app.get("/")
def index(request: Request, id: str = Form(...)):
    return templates.TemplateResponse("main_page.html", context={"request": request})

That's how my HTML file looks like:这就是我的 HTML 文件的样子：

<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.1.3/dist/css/bootstrap.min.css"
          integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

    <title>Main Page</title>
  </head>
  <body>
    <form method="get">
      <center>
      <div class="form-group col-lg-4">
        <label for="walletAdress">Natluk Coin Reputation Wallet</label>
        <input type="text" class="form-control" id="walletAdress" aria-describedby="walletlHelp"
               placeholder="Wallet address" style="text-align: center" name="id">
      </div>
      </center>
      <center>
        <a class="btn btn-primary" type="submit" role="button"
           href="https://wallet-reputation.herokuapp.com/wallet/{{ id }}">Check Wallet</a>
        <a class="btn btn-primary" type="submit" role="button"
           href="https://wallet-reputation.herokuapp.com/wallet/run/{{ id }}">Create Wallet</a>
      </center>
</html>

So the logic is that, when I access my "/" endpoint I post the string into form, and then I click one of the buttons, which starts running the endpoint with variable from form.所以逻辑是，当我访问我的"/"端点时，我将字符串发布到表单中，然后我单击其中一个按钮，它开始使用来自表单的变量运行端点。

Answer 1

Update更新

Below is an example of how to submit a value through form, and how your endpoint should look like:下面是一个示例，说明如何通过表单提交值，以及您的端点应该是什么样子：

from fastapi import FastAPI, Request, status, Form
from fastapi.responses import HTMLResponse

app = FastAPI()

@app.get('/', response_class=HTMLResponse)
async def event_create_form(request: Request):
    html_content = """
    <html>
       <body>
          <form method="POST" action="/submit">
             <input type="text" name="id">
             <input type="submit" value="Create Event">
          </form>
       </body>
    </html>
    """
    return HTMLResponse(content=html_content, status_code=200)
    
@app.post('/submit')
async def event_create(id: int = Form(...)):
    return {"id": id}

Original answer原答案

You are submitting id as path parameter, but your endpoint expects it to be a body ( Form ) parameter.您正在提交id作为path参数，但您的端点希望它是一个 body ( Form ) 参数。 Thus, you should change your endpoint as shown below, so that id is expected as path parameter:因此，您应该如下所示更改端点，以便将id作为路径参数：

@app.get("/{id}")
def index(request: Request, id: str):
    ...

FastAPI - 必填字段，缺少值

问题描述

1 个解决方案

解决方案1
0 已采纳 2022-03-05 20:14:05

Update更新

Original answer原答案

FastAPI - 必填字段，缺少值

问题描述

1 个解决方案

解决方案1 0 已采纳 2022-03-05 20:14:05

Update更新

Original answer原答案

解决方案1
0 已采纳 2022-03-05 20:14:05