def on_edit(request, page_name):
"""Edit the current revision of a page."""
change_note = error = ''
revision = Revision.query.filter((Page.name == page_name) & (
Page.page_id == Revision.page_id)).order_by(
Revision.revision_id.desc()).first()
if revision is None:
page = None
else:
page = revision.page
if request.method == 'POST':
text = request.form.get('text')
if request.form.get('cancel') or \
revision and revision.text == text:
return redirect(href(page.name))
elif not text:
error = 'You cannot save empty revisions.'
else:
change_note = request.form.get('change_note', '')
if page is None:
page = Page(page_name)
revision = Revision(page, text, change_note)
session.commit()
return redirect(href(page.name))
return Response(
generate_template('action_edit.html',
revision=revision,
page=page,
new=page is None,
page_name=page_name,
change_note=change_note,
error=error))
def page_missing(request, page_name, revision_requested, protected=False):
"""Displayed if page or revision does not exist."""
return Response(generate_template('page_missing.html',
page_name=page_name,
revision_requested=revision_requested,
protected=protected),
status=404)
def recent_changes(request):
"""Display the recent changes."""
page = max(1, request.args.get('page', type=int))
query = RevisionedPage.query \
.order_by(RevisionedPage.revision_id.desc())
return Response(generate_template('recent_changes.html',
pagination=Pagination(query, 20, page, 'Special:Recent_Changes')
))
def page_index(request):
"""Index of all pages."""
letters = {}
for page in Page.query.order_by(Page.name):
letters.setdefault(page.name.capitalize()[0], []).append(page)
return Response(generate_template('page_index.html',
letters=sorted(letters.items())
))
def on_show(request, page_name):
"""Displays the page the user requests."""
revision_id = request.args.get('rev', type=int)
query = RevisionedPage.query.filter_by(name=page_name)
if revision_id:
query = query.filter_by(revision_id=revision_id)
revision_requested = True
else:
query = query.order_by(RevisionedPage.revision_id.desc())
revision_requested = False
page = query.first()
if page is None:
return page_missing(request, page_name, revision_requested)
return Response(generate_template('action_show.html', page=page))
def on_revert(request, page_name):
"""Revert an old revision."""
rev_id = request.args.get('rev', type=int)
old_revision = page = None
error = 'No such revision'
if request.method == 'POST' and request.form.get('cancel'):
return redirect(href(page_name))
if rev_id:
old_revision = Revision.query.filter(
(Revision.revision_id == rev_id)
& (Revision.page_id == Page.page_id)
& (Page.name == page_name)).first()
if old_revision:
new_revision = Revision.query.filter(
(Revision.page_id == Page.page_id)
& (Page.name == page_name)).order_by(
Revision.revision_id.desc()).first()
if old_revision == new_revision:
error = 'You tried to revert the current active ' \
'revision.'
elif old_revision.text == new_revision.text:
error = 'There are no changes between the current ' \
'revision and the revision you want to ' \
'restore.'
else:
error = ''
page = old_revision.page
if request.method == 'POST':
change_note = request.form.get('change_note', '')
change_note = 'revert' + (change_note
and ': ' + change_note or '')
revision = Revision(page, old_revision.text, change_note)
session.commit()
return redirect(href(page_name))
return Response(
generate_template('action_revert.html',
error=error,
old_revision=old_revision,
page=page))
def on_diff(request, page_name):
"""Show the diff between two revisions."""
old = request.args.get('old', type=int)
new = request.args.get('new', type=int)
error = ''
diff = page = old_rev = new_rev = None
if not (old and new):
error = 'No revisions specified.'
else:
revisions = dict(
(x.revision_id, x)
for x in Revision.query.filter((Revision.revision_id.in_((old,
new)))
& (Revision.page_id == Page.page_id)
& (Page.name == page_name)))
if len(revisions) != 2:
error = 'At least one of the revisions requested ' \
'does not exist.'
else:
new_rev = revisions[new]
old_rev = revisions[old]
page = old_rev.page
diff = unified_diff((old_rev.text + '\n').splitlines(True),
(new_rev.text + '\n').splitlines(True),
page.name, page.name,
format_datetime(old_rev.timestamp),
format_datetime(new_rev.timestamp), 3)
return Response(
generate_template('action_diff.html',
error=error,
old_revision=old_rev,
new_revision=new_rev,
page=page,
diff=diff))
def on_log(request, page_name):
"""Show the list of recent changes."""
page = Page.query.filter_by(name=page_name).first()
if page is None:
return page_missing(request, page_name, False)
return Response(generate_template('action_log.html', page=page))
def missing_action(request, action):
"""Displayed if a user tried to access a action that does not exist."""
return Response(generate_template('missing_action.html', action=action),
status=404)
