Flask Error Method Not Allowed The method is not allowed for the requested URL

Question

I m getting the following error whenever I try to submit data to my Flask form   Method Not Allowed The method is not allowed for the requested URL    I think the issue is in the return redirect url for  database    I m doing  I ve also tried return render template  database html  too  I m trying to call the database page once form entries have been submitted to the database    Relevant parts of my code are as follows    app route   entry   methods   GET    POST    def entry page        if request method     POST           date   request form  date           title   request form  blog title           post   request form  blog main           post entry   models BlogPost date   date  title   title  post   post          db session add post entry          db session commit           return redirect url for  database        else          return render template  entry html     app route   database           def database        query          for i in session query models BlogPost           query append  i title  i post  i date       return render template  database html   query   query    entry html is     THIS IS THE BLOG ENTRY PAGE  blog   lt html gt       lt form action   database  method    post  gt          date lt input name    date  type    text  class  text  gt          title lt input name    blog title  type    text  class  text  gt          main lt input name    blog main  type    text  class  text  gt           lt input type    submit  gt       lt  form gt    lt  html gt    and database html     THIS IS THE QUERY     query

User · Answer

I also had similar problem where redirects were giving 404 or 405 randomly on my development server. It was an issue with gunicorn instances.

Turns out that I had not properly shut down the gunicorn instance before starting a new one for testing. Somehow both of the processes were running simultaneously, listening to the same port 8080 and interfering with each other. Strangely enough they continued running in background after I had killed all my terminals. Had to kill them manually using fuser -k 8080/tcp

User · Answer

I had a similar problem when I deployed my Flask app in the IIS  Apparently  IIS does not accept route that include an underline        When I removed the underline  problem was resolved

User · Answer

What is happening here is that database route does not accept any url methods   I would try putting the url methods in the app route just like you have in the entry page function    app route   entry   methods   GET    POST    def entry page        if request method     POST           date   request form  date           title   request form  blog title           post   request form  blog main           post entry   models BlogPost date   date  title   title  post   post          db session add post entry          db session commit           return redirect url for  database        else          return render template  entry html     app route   database   methods   GET    POST            def database        query          for i in session query models BlogPost           query append  i title  i post  i date       return render template  database html   query   query

User · Answer

I had the same problem  and my solving was to replace    return redirect url for  index      with   return render template  indexo html  data Todos query all      in my POST and DELETE route

[python] Flask Error: "Method Not Allowed The method is not allowed for the requested URL"

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