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POgoogle app engine (python) confusing class 'object has no attribute' error
 

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  1. POgoogle app engine (python) confusing class 'object has no attribute' error
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    <p>I have a 2 classes.<br> One looks like this:</p> <pre><code>class Feed(db.Model): bid = db.StringProperty() title = db.StringProperty() url = db.StringProperty() datecreated = db.DateProperty(auto_now_add=True) voice = db.StringProperty() lastchecked = db.DateProperty(auto_now=True) language = db.StringProperty() active = db.BooleanProperty() posts = db.ListProperty(db.Key) </code></pre> <p>The other looks like this:</p> <pre><code>class Post(db.Model): title = db.StringProperty() postdate = db.DateTimeProperty() author = db.StringProperty() body = db.TextProperty() link = db.LinkProperty() hasmp3 = db.BooleanProperty() mp3location = db.StringProperty() processed = db.BooleanProperty() voice = db.StringProperty() length = db.FloatProperty() inprocess = db.BooleanProperty() haspict = db.BooleanProperty() pictures = db.ListProperty(db.Key) </code></pre> <p>I am trying to update a Feed by appending a Post like this:</p> <pre><code>blogid = cgi.escape(self.request.get('bid')) postid = cgi.escape(self.request.get('pid')) blog = Feed.get_by_key_name(blogid) post = Post.get_by_key_name(postid) if post.key() not in blog.posts: blog.posts.append(post.key()) blog.put() </code></pre> <p>When I attempt to 'put' the blog with the post information, python doesn't like it and tells me</p> <blockquote> <pre><code>AttributeError: 'Feed' object has no attribute 'posts' </code></pre> </blockquote> <p>The reason I am so confused is because I have nearly the exact logic in adding a 'Feed' to a 'UserClass' where the 'UserClass' has 'Feeds' designated as a ListProperty in the same way that a 'Feed' has a 'Post' designated as a ListProperty.</p> <p>This is an example of what I mean:</p> <pre><code>class UserClass(db.Model): synccode = db.StringProperty() firstname = db.StringProperty() lastname = db.StringProperty() address = db.StringProperty() address2 = db.StringProperty() city = db.StringProperty() state = db.StringProperty() zipcode = db.StringProperty() emailaddress = db.StringProperty() password = db.StringProperty() mobile = db.StringProperty() is_authenticated = db.BooleanProperty() groupid = db.StringProperty() mobilesynched = db.BooleanProperty() devicemodel = db.StringProperty() isatmoscast = db.BooleanProperty() registerdate = db.DateProperty(auto_now_add=True) pack = db.StringProperty() personalcontact = db.BooleanProperty() lastlogin = db.DateProperty(auto_now_add=True) isactive = db.BooleanProperty() feeds = db.ListProperty(db.Key) </code></pre> <p>This works fine:</p> <pre><code>if blog.key() not in user.feeds: user.feeds.append(blog.key()) user.put() </code></pre> <p>This throws the error:</p> <pre><code>if post.key() not in blog.posts: blog.posts.append(post.key()) blog.put() </code></pre> <p>Any help would be appreciated.</p>
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    1. PTQuestion
    1. USTirrell Payton
    1. USTirrell Payton
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      1. POgoogle app engine (python) confusing class 'object has no attribute' error
      1. USDrew Sears
      1. VTFavorite
    1. COyour ListProperty is called "posts", not "postids"
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      1. POgoogle app engine (python) confusing class 'object has no attribute' error
      1. USgeoffspear
    2. COThanks. That was a typo from me playing around with what I thought may have been a reserved name, but that wasnt the issue. I have updated the code.
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      1. POgoogle app engine (python) confusing class 'object has no attribute' error
      1. USTirrell Payton
    3. COYou're still missing the error.
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      1. POgoogle app engine (python) confusing class 'object has no attribute' error
      1. USDrew Sears
 

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