内容丰富的 422 错误：使用 Python 上传资产在本地工作正常，而不是部署

如何解决内容丰富的 422 错误：使用 Python 上传资产在本地工作正常，而不是部署

这是我的flask脚本，它接收来自HTML表单的提交并将其发送到Contentful：

from flask import Flask,request,render_template
import os
from .extensions import register_extensions,assets
from contentful_management import Client
import uuid
import random

atoken = os.environ.get("ACCESS_TOKEN")
space = os.environ.get("SPACE_ID")

def create_app():
    app = Flask(__name__)   
    assets._named_bundles = {}
    register_extensions(app)

    @app.route("/",methods =["GET","POST"])
    def index():
        if request.method == "POST":
           #  Get User Details
            authorname = request.form["name"]
            email = request.form["email"] 
            major = request.form["major"]
            tools_list = request.form["tools"]
            tools_list = tools_list.split(",")
            year_study = request.form["year"]
            project_title = request.form["projectname"]
            project_description = request.form["projectdescription"]
            no_files = request.form["filenumber"]
            client = Client(atoken)

            # Entry ID Generation
            uid = uuid.uuid4().hex[:20] 
   
               # File Counter
            x = 0 

            # Array for File IDs
            files_array = []
            while x < int(no_files):
                  fieldid = "file" + str(x)
                  file_name = "filename" + str(x)
                  fname = request.form[file_name]
                  asset_id = uuid.uuid4().hex[:20] 
                  files_array.append(asset_id)
                  uploadmedia = request.files[fieldid]
                  # Upload File
                  new_upload = client.uploads(space).create(uploadmedia.stream)  
                  # Upload to Asset             
                  client.assets(space,'master').create(asset_id,{
                     'fields': {
                         'title': {
                           'en-US': fname
                           },'file': {
                           'en-US': {
                           'fileName': file_name,'contentType': uploadmedia.content_type,'uploadFrom': new_upload.to_link().to_json()
                           }
                        }
                     }
                     }
                  )
                  
                  # Process and Publish Asset
                  asset = client.assets(space,'master').find(asset_id)
                  asset.process()
                  asset.publish() 
                  x = x + 1
            
            # Generate ID List
            ids = []
            for asset_id in files_array:
               y = asset_id
               x = {"sys": {"type": "Link","linkType": "Asset","id": y}}
               ids.append(x)
          
            # Create an Entry:
            entry_id = uid  
            entry = client.entries(space,'master').create(entry_id,{
              'content_type_id': 'portfolio',"fields": {
                "name": {
                   "en-US":  project_title,},"author": {
                   "en-US":  authorname,"contact": {
                   "en-US":  email,"major": {
                   "en-US":  major,"tools": {
                   "en-US":  tools_list,"year": {
                   "en-US":  year_study,"slug": {
                   "en-US":  project_title,"description": {
                   "en-US":  project_description,"files":{
                  "en-US" : ids
                 } 
                } })
                  # Update the Entry:
            entry.title = project_title
            entry.save()
        return render_template("index.html") # print(uploadmedia.filename)
    
    return app

这在本地完美，我可以一次性提交和创建条目。但是，当我将此应用程序部署到 Heroku 时，出现以下错误：

2021-06-16T08:58:55.000000+00:00 app[api]: Build succeeded
2021-06-16T08:58:56.489660+00:00 heroku[router]: at=info method=POST path="/" host=submission-form.herokuapp.com request_id=cf4e8b77-02a6-4dfc-8780-19339d9138f5 fwd="202.12.82.198" dyno=web.1 connect=1ms service=1155ms status=500 bytes=244 protocol=https
2021-06-16T08:58:56.485604+00:00 app[web.1]: [2021-06-16 08:58:56 +0000] [8] [ERROR] Error handling request /
2021-06-16T08:58:56.485645+00:00 app[web.1]: Traceback (most recent call last):
2021-06-16T08:58:56.485646+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/gunicorn/workers/sync.py",line 134,in handle
2021-06-16T08:58:56.485647+00:00 app[web.1]: self.handle_request(listener,req,client,addr)
2021-06-16T08:58:56.485648+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/gunicorn/workers/sync.py",line 175,in handle_request
2021-06-16T08:58:56.485648+00:00 app[web.1]: respiter = self.wsgi(environ,resp.start_response)
2021-06-16T08:58:56.485648+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/flask/app.py",line 2088,in __call__
2021-06-16T08:58:56.485649+00:00 app[web.1]: return self.wsgi_app(environ,start_response)
2021-06-16T08:58:56.485649+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/flask/app.py",line 2073,in wsgi_app
2021-06-16T08:58:56.485649+00:00 app[web.1]: response = self.handle_exception(e)
2021-06-16T08:58:56.485650+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/flask/app.py",line 2070,in wsgi_app
2021-06-16T08:58:56.485650+00:00 app[web.1]: response = self.full_dispatch_request()
2021-06-16T08:58:56.485650+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/flask/app.py",line 1515,in full_dispatch_request
2021-06-16T08:58:56.485651+00:00 app[web.1]: rv = self.handle_user_exception(e)
2021-06-16T08:58:56.485651+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/flask/app.py",line 1513,in full_dispatch_request
2021-06-16T08:58:56.485651+00:00 app[web.1]: rv = self.dispatch_request()
2021-06-16T08:58:56.485651+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/flask/app.py",line 1499,in dispatch_request
2021-06-16T08:58:56.485652+00:00 app[web.1]: return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
2021-06-16T08:58:56.485652+00:00 app[web.1]: File "/app/app/__init__.py",line 69,in index
2021-06-16T08:58:56.485664+00:00 app[web.1]: asset.publish()
2021-06-16T08:58:56.485665+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/contentful_management/resource.py",line 408,in publish
2021-06-16T08:58:56.485665+00:00 app[web.1]: result = self._client._put(
2021-06-16T08:58:56.485665+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/contentful_management/client.py",line 789,in _put
2021-06-16T08:58:56.485666+00:00 app[web.1]: return self._request('put',url,attributes,**kwargs)
2021-06-16T08:58:56.485666+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/contentful_management/client.py",line 757,in _request
2021-06-16T08:58:56.485667+00:00 app[web.1]: raise error
2021-06-16T08:58:56.485667+00:00 app[web.1]: contentful_management.errors.UnprocessableEntityError: HTTP status code: 422
2021-06-16T08:58:56.485667+00:00 app[web.1]: Message: Validation error
2021-06-16T08:58:56.485667+00:00 app[web.1]: Details:
2021-06-16T08:58:56.485668+00:00 app[web.1]: * Name: required - Path: '['fields','file','en-US','url']'
2021-06-16T08:58:56.485668+00:00 app[web.1]: Request ID: dd3048f785c9384dff75db0481cdb730
2021-06-16T08:58:56.485854+00:00 app[web.1]: 10.30.201.120 - - [16/Jun/2021:08:58:56 +0000] "POST / HTTP/1.1" 500 0 "-" "-"

为什么会这样？ * Name: required - Path: '['fields','url']' 甚至是什么意思？我不明白一个脚本如何可以在本地正常工作而不是在云上正常工作，即使它似乎不是应该产生问题的部分。

My repo is hosted here,if it helps

解决方法

查看您的代码，我建议进行一些更改（这是基于文档示例 https://github.com/contentful/contentful-management.py#assets -“创建资产”部分）：

1 - 将您正在创建的资产存储在变量中

2 - 重新加载（如有必要，发布前资产）

#[...]
new_upload = client.uploads(space).create(uploadmedia.stream)  

# Save the asset into a variable
new_asset = client.assets(space,'master').create(asset_id,{
        'fields': {
            'title': {
                'en-US': fname
            },'file': {
                'en-US': {
                    'fileName': file_name,'contentType': uploadmedia.content_type,'uploadFrom': new_upload.to_link().to_json()
                }
            }
        }
    }
)

# Important: process the new_asset that was previously stored in the variable
# This calls `.reload()` in the asset as well
new_asset.process() 

# Process might take some time - normally it doesn't

# Process and Publish Asset
new_asset.reload().publish() 

reload() 重新获取资产，通常不需要它，因为 process() 会做同样的事情。

您可以检查存储库代码以获取有关库行为的更多提示：https://github.com/contentful/contentful-management.py/blob/658341bc5af529b00fa317362c0b6cca221d76e4/contentful_management/asset.py#L42