Homework 4

Honor and regular versions of assignment

We will have two versions of this homework: a regular version, and a honor version. The difference in assignment is minimal: in the honor version, you have to implement localized datetime. The difference is in the reviews: if you submit to the honor version, you take upon yourself to write insightful reviews of other submissions, and you are fully entitled to expect helpful reviews from others.

Please choose either regular or honor, and submit and do your reviews in the same version.

Submission URLs:

• Regular: https://www.crowdgrader.org/crowdgrader/venues/view_venue/802
• Honor: https://www.crowdgrader.org/crowdgrader/venues/view_venue/803

Deadlines:

• Submission: Thursday February 12, 2015, 23:59pm
• Review: Thursday February 19, 2015, 23:59pm

Assignment

In this homework, you will complete the wiki that has been started in homework 3.

You have to add to the wiki the following.

Display of revision list

When you view a page, in addition to the button "Edit", there should also be a button "History". This button should lead to a page where you can see the list of all revisions of the page. For each revision, you should give in reverse chronological order:

• Author, if the user was logged in, or else, IP address, if the user who created the revision was not logged in. This is similar to the Wikipedia.
• Time at which the revision was done. In the honor version of the assignment, follow these instructions and implement time localization.
• A comment indicating the purpose of the revision (so when you edit, you have to ask for such comment, together with the edit. Just add a Field('comment') to your form).
• A button that says "revert to this revision".

Reverting to a previous revision

When you click on a button "revert to this revision", the wiki should create a new revision, with a comment equal to "Revert to 2015-01-25 11:33:44 UTC" (so, equal to the datetime of the revision to which you revert in UTC), and with a content equal to the content to the revision to which you are reverting. In practice, do this as follows:

• Read the revision to which you are reverting.
• Create a new revision, with content equal to the content you just read, and with comment as specified above. You are the author of this new revision.

That's all there is to it!