某些插件的一点小特性

最新推荐文章于 2024-09-06 20:58:11 发布

转载最新推荐文章于 2024-09-06 20:58:11 发布 · 129 阅读

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原文链接：https://my.oschina.net/kelby/blog/193129

为什么80%的码农都做不了架构师？>>>

对于DB的操作无非就是 ‘增、删、查、改’，可对应着HTTP的 POST, DELETE, GET, PUT,。

所以在理解某些插件的 model “方法”时，同样可以像在controller里一样，分类为 GET, 非GET 操作。

上面所说的目的：有的插件提供的方法很多，死记硬背会显得很傻，先分好类就容易多了。

# Votes up the question by the user.
# If the user already voted the question up then an AlreadyVotedError is raised.
# If the same user already voted the question down then the vote is changed to an up vote.
user.up_vote(question)

# Votes the question up, but without raising an AlreadyVotedError when the user
# already voted the question up (it just ignores the vote).
user.up_vote!(question)

# Votes down the question by the user.
# If the user already voted the question down then an AlreadyVotedError is raised.
# If the same user already voted the question up then the vote is changed to an down vote.
user.down_vote(question)

# Votes the question down, but without raising an AlreadyVotedError when the user
# already voted the question down (it just ignores the vote).
user.down_vote!(question)

# Clears a already done vote by an user.
# If the user didn't vote for the question then a NotVotedError is raised.
user.unvote(question)

# Does not raise a NotVotedError if the user didn't vote for the question
# (it just ignores the unvote).
user.unvote!(question)

# The number of up votes for this question.
question.up_votes

# The number of down votes for this question.
question.down_votes

# The number of up votes the user did.
user.up_votes

# The number of down votes the user did.
user.down_votes

# up votes - down votes (may also be negative if there are more down votes than up votes)
question.votes

# Returns true if the question was voted by the user
user.voted?(question)

# Returns true if the question was up voted by the user, false otherwise
user.up_voted?(question)

# Returns true if the question was down voted by the user, false otherwise
user.down_voted?(question)

# Access votings through voter
voting = user.votings.first
voting.up_vote? # true if up vote, false if down vote

# Access votings through voteable
voting = question.votings.first
voting.up_vote? # true if up vote, false if down vote

对于DB的操作无非就是 ‘增、删、查、改’，可对应着HTTP的 POST, DELETE, GET, PUT,。所以在理解某些插件的 model “方法”时，同样可以理解为 GET, 非GET 操作。上面所说的目的：有的插件提供的方法很多，死记硬背会显得很傻，先分好类就容易多了。