摘要：
left_Id和right_Id。以下示例使用布局。children变量用于在end_Id和right_idboardsDict={}#ThemapingbetweenId=>；board#BuildthesectionmapallSections=rbcommon.tb_ section.find（｛｝）.sort（'rank'，
关联的数据表
在phpBB3中导入版面时, 需要处理的有两张表, 一个是 forums, 一个是 acl_groups.
如果是干净的论坛, 可以不保留安装时填入的默认分区和版面, 直接用以下语句初始化:
-- 清空 forums 表 TRUNCATE phpbb_forums; -- 清空 acl_groups 表 TRUNCATE phpbb3015.phpbb_acl_groups; -- 填入初始化权限 INSERT INTO `phpbb_acl_groups` VALUES (1,0,85,0,1),(1,0,93,0,1),(1,0,111,0,1),(5,0,0,5,0),(5,0,0,1,0),(2,0,0,6,0),(3,0,0,6,0),(4,0,0,5,0),(4,0,0,10,0),(7,0,0,23,0);
如果是已经存在版面, 并且需要保留版面的论坛, 则仅需要记下当前的最大right_id
SELECT MAX(right_id) FROM phpbb_forums
.
需要的最小数据集
需要的最小字段为 `forum_id`, `parent_id`, `left_id`, `right_id`, `forum_name`, `forum_type`
构造版面数据
phpBB3的版面为单个父节点的树状结构, 使用了parent_id, left_id, right_id 来标识版面间的层级关系以及排序顺序. 在构造版面数据时, 需要的就是采集最小数据集, 并正确生成parent_id, left_id和right_id. 下面的例子使用的版面, 原数据是分区 + 版面的结构, 分区有层级关系, 版面有层级关系, 分区的ID与版面的ID有重叠, 并且分区与版面之间存在多个父节点的情况. 需要在生成中进行调整.
创建一个可用的ID序列, 用于将分区ID映射到可用ID序列上
数量不大的话, 这一步可以通过手工完成, 根据分区的数量, 观察版面的ID序列, 列出可用的ID做成list
availableIds = [3, 8, 11, 12, 13, 27, 30, ...]
将分区加入版面列表
遍历分区, 将旧ID映射到新ID上, 需要两次遍历, 第二次遍历时构造父子关系, children变量用于在最后生成left_id和right_id
boardsDict = {} # The mapping between Id => board
# Build the section map
allSections = rbcommon.tb_section.find({}).sort('rank', 1)
boards = [] # Record all boards
topBoards = [] # the root board Ids
sectionMap = {} # The mapping between old section Id => new board Id, for assigning new Ids for the sections
cusor = 0
for section in allSections:
sectionMap[str(section['_id'])] = availableIds[cusor]
newId = availableIds[cusor]
board = {
'oid': section['_id'], 'oldPid': section['parentId'],
'_id': newId, 'name2': section['name2'], 'is_folder': 'true',
'desc': section['desc'],
'children': []
}
boards.append(board)
boardsDict[board['_id']] = board
cusor += 1
for board in boards:
if (board['oldPid'] != 0):
board['parentId'] = sectionMap[str(board['oldPid'])]
parent = boardsDict[board['parentId']]
parent['children'].append(board['_id'])
else:
board['parentId'] = 0
topBoards.append(board['_id'])
for board in boards:
print('oid:{}, oldPid:{}, _id:{}, parentId:{}, children:{}'.format(board['oid'], board['oldPid'], board['_id'], board['parentId'], board['children']))
将版面加入列表
# Build the boards
mongoBoards = rbcommon.tb_board.find({})
for mongoBoard in mongoBoards:
board = {
'oid': mongoBoard['_id'], 'oldPid': 0, 'parentId': 0,
'_id': mongoBoard['_id'], 'name2': mongoBoard['name2'], 'is_folder': mongoBoard['is_folder'],
'desc': mongoBoard['name'],
'children': []
}
boards.append(board)
if (board['_id'] in boardsDict.keys()):
print('Error: {}'.format(board['_id']))
exit
boardsDict[board['_id']] = board
完善版面层级关系
# Build the boards tree
allSectionToBoards = rbcommon.tb_section_to_board.find({})
for s2b in allSectionToBoards:
if (s2b['parentId'] == 0):
# parent is section
parentId = sectionMap[str(s2b['sectionId'])]
parent = boardsDict[parentId]
board = boardsDict[s2b['boardId']]
# avoid the multiple parent
if (board['parentId'] > 0):
print('Duplicate {} for {}, board:{}'.format(parentId, board['parentId'], s2b['boardId']))
continue
board['parentId'] = parentId
parent['children'].append(s2b['boardId'])
else:
# parent is board
parent = boardsDict[s2b['parentId']]
board = boardsDict[s2b['boardId']]
# avoid the multiple parent
if (board['parentId'] > 0):
print('Duplicate {} for {}, board:{}'.format(s2b['parentId'], board['parentId'], s2b['boardId']))
continue
board['parentId'] = s2b['parentId']
parent['children'].append(s2b['boardId'])
print("All boards:")
for board in boards:
print('oid:{}, oldPid:{}, _id:{}, parentId:{}, folder:{}, children:{}'.format(
board['oid'], board['oldPid'], board['_id'], board['parentId'], board['is_folder'], board['children']))
使用递归填充left_id和right_id
其中counter的取值, 如果是干净的论坛并且前面已经执行了truncate, 就将counter设成1, 否则设成前面得到的right_id最大值 + 1. 这样新导入的分区和版面都会出现在原有分区和版面的下方
# Build the leftId and rightId
markLeftAndRight(topBoards)
print("Marked boards:")
for board in boards:
print('_id:{}, parentId:{}, left:{}, right:{}, folder:{}, children:{}'.format(
board['_id'], board['parentId'], board['leftId'], board['rightId'], board['is_folder'], board['children']))
# 用于递归的方法
def markLeftAndRight(idList):
global counter
for id in idList:
board = boardsDict[id]
if ('leftId' in board):
print('Error: {}'.format(id))
exit
board['leftId'] = counter
counter += 1
if (len(board['children']) > 0):
markLeftAndRight(board['children'])
board['rightId'] = counter
counter += 1
.
写入MySQL
用pymsql写入mysql, 每写入一个版面, 同时写入对应的权限, 注意分区和版面的默认权限数据是不一样的.
# Write it to MySQL
for board in boards:
try:
with rbcommon.mysqlclient.cursor() as cursor:
# insert forum
sql = '''INSERT INTO `phpbb_forums` (`forum_id`, `parent_id`, `left_id`, `right_id`, `forum_parents`, `forum_name`, `forum_desc`,
`forum_rules`, `forum_type`)
VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s)'''
cursor.execute(sql, (
board['_id'],
board['parentId'],
board['leftId'],
board['rightId'],
'',
board['name2'],
board['desc'],
'',
0 if (board['is_folder'] == 'true') else 1))
rbcommon.mysqlclient.commit()
# insert acl_group
if (board['is_folder'] == 'true'):
sql = 'INSERT INTO `phpbb_acl_groups` VALUES (1,%s,0,17,0),(2,%s,0,17,0),(3,%s,0,17,0),(6,%s,0,17,0)'
cursor.execute(sql, (
board['_id'], board['_id'], board['_id'], board['_id']))
rbcommon.mysqlclient.commit()
else:
sql = 'INSERT INTO `phpbb_acl_groups` VALUES (1,%s,0,17,0),(2,%s,0,15,0),(3,%s,0,15,0),(4,%s,0,21,0),(5,%s,0,14,0),(5,%s,0,10,0),(6,%s,0,19,0),(7,%s,0,24,0)'
cursor.execute(sql, (
board['_id'], board['_id'], board['_id'], board['_id'], board['_id'], board['_id'], board['_id'], board['_id']))
rbcommon.mysqlclient.commit()
except Exception as e:
print(e)
数据导入后, 使用管理员帐号先在后台清空缓存, 再查看和编辑版面