在 R 中导入 Infopath .XML 表单并转换为数据框的最佳方法是什么？如果我在 Excel 中打开 Infopath .XML 文件，数据框的行和列会正确显示。
这是我在 R 中使用 XML 包尝试的内容:
但是，在第 2 步中，我收到以下错误:
Error in `[<-.data.frame`(`*tmp*`, i, names(nodes[[i]]), value = c("touch your head13011000", :
duplicate subscripts for columns
不过，当我在 Excel 中打开 XML 文件时，似乎没有重复的列。如何将此 XML 文件从 Infopath 转换为 R 中的数据框？预期的列应该是(因为它们出现在 Excel 中):
TCID, DateCoded, tcAge, T1_B3, T1_B2, T1_B1, T1_B0, T1_A3, T1_A2, T1_A1, T1_A0, T1_DelayTotal, T2_A3, T2_A2, T2_A1, T2_A, T2_B3, T2_B2, T2_B1, T2_B0, T2_DelayTotal, Coder, notes_t1, note_t2, bachildpres30, baparpres30, bapassptgo, bapassptnogo, bamissgame, P1_B3, P1_B2, P1_B1, P1_B0, P1_A3, P1_A2, P1_A1, P1_A0, P1_DelayTotal, P1_action, P1_go-nogo, P1_score, P1_delay, P1_trial, P1_Ecommand, P1_imitation, P1_restraint, P1_ruleswitch, P1_trials, P1_gotrials, P1_nogotrials, T1_gotrials, T1_nogotrials, T1_trials, T2_gotrials, T2_nogotrials, T2_trials, P1_notplay, T1_trial, T1_go-nogo, T1_score, T1_delay, T1_action, T2_trial, T2_go-nogo, T2_score, T2_delay, T2_action
对于在 XML 文件中多次出现的变量，我希望它们以长格式出现在数据框中(即，同一变量的多行)。我对 XML 文件没有太多经验，因此非常感谢您的帮助。
下面是我使用 xmlParse 时在 R 中解析的 XML 文件的样子:
<my:myFields lang="en-us" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:w="http://schemas.microsoft.com/office/word/2003/wordml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:wx="http://schemas.microsoft.com/office/word/2003/auxHint" xmlns:aml="http://schemas.microsoft.com/aml/2001/core" xmlns:w10="urn:schemas-microsoft-com:office:word" xmlns:st="urn:schemas-microsoft-com:office:smarttags" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-07-01T18:12:59" xmlns:xd="http://schemas.microsoft.com/office/infopath/2003">
<my:SPSS>
<my:TCID>10</my:TCID>
<my:DateCoded>2013-04-01</my:DateCoded>
<my:tcAge>30</my:tcAge>
<my:T1_B3>6</my:T1_B3>
<my:T1_B2>0</my:T1_B2>
<my:T1_B1>0</my:T1_B1>
<my:T1_B0>0</my:T1_B0>
<my:T1_A3>0</my:T1_A3>
<my:T1_A2>0</my:T1_A2>
<my:T1_A1>1</my:T1_A1>
<my:T1_A0>5</my:T1_A0>
<my:T1_DelayTotal>1</my:T1_DelayTotal>
<my:T2_A3 nil="true"/>
<my:T2_A2 nil="true"/>
<my:T2_A1 nil="true"/>
<my:T2_A0 nil="true"/>
<my:T2_B3 nil="true"/>
<my:T2_B2 nil="true"/>
<my:T2_B1 nil="true"/>
<my:T2_B0 nil="true"/>
<my:T2_DelayTotal nil="true"/>
<my:Coder>Name</my:Coder>
</my:SPSS>
<my:notes_t1/>
<my:note_t2/>
<my:bachildpres30>0</my:bachildpres30>
<my:baparpres30>0</my:baparpres30>
<my:bapassptgo>1</my:bapassptgo>
<my:bapassptnogo>0</my:bapassptnogo>
<my:bamissgame>0</my:bamissgame>
<my:P1_B3>4</my:P1_B3>
<my:P1_B2>0</my:P1_B2>
<my:P1_B1>0</my:P1_B1>
<my:P1_B0>1</my:P1_B0>
<my:P1_A3>0</my:P1_A3>
<my:P1_A2>0</my:P1_A2>
<my:P1_A1>1</my:P1_A1>
<my:P1_A0>3</my:P1_A0>
<my:P1_DelayTotal>0</my:P1_DelayTotal>
<my:group2>
<my:group3>
<my:P1_action>touch your head</my:P1_action>
<my:P1_go-nogo>1</my:P1_go-nogo>
<my:P1_score>3</my:P1_score>
<my:P1_delay>0</my:P1_delay>
<my:P1_trial>1</my:P1_trial>
<my:P1_Ecommand>1</my:P1_Ecommand>
<my:P1_imitation>0</my:P1_imitation>
<my:P1_restraint>0</my:P1_restraint>
<my:P1_ruleswitch>0</my:P1_ruleswitch>
</my:group3>
<my:group3>
<my:P1_action>touch your nose</my:P1_action>
<my:P1_go-nogo>1</my:P1_go-nogo>
<my:P1_score>3</my:P1_score>
<my:P1_delay>0</my:P1_delay>
<my:P1_trial>2</my:P1_trial>
<my:P1_Ecommand>1</my:P1_Ecommand>
<my:P1_imitation>0</my:P1_imitation>
<my:P1_restraint>0</my:P1_restraint>
<my:P1_ruleswitch>0</my:P1_ruleswitch>
</my:group3>
<my:group3>
<my:P1_action>touch your tummy</my:P1_action>
<my:P1_go-nogo>1</my:P1_go-nogo>
<my:P1_score>3</my:P1_score>
<my:P1_delay>0</my:P1_delay>
<my:P1_trial>3</my:P1_trial>
<my:P1_Ecommand>1</my:P1_Ecommand>
<my:P1_imitation>0</my:P1_imitation>
<my:P1_restraint>0</my:P1_restraint>
<my:P1_ruleswitch>0</my:P1_ruleswitch>
</my:group3>
<my:group3>
<my:P1_action>touch your head</my:P1_action>
<my:P1_go-nogo>1</my:P1_go-nogo>
<my:P1_score>0</my:P1_score>
<my:P1_delay>0</my:P1_delay>
<my:P1_trial>4</my:P1_trial>
<my:P1_Ecommand>0</my:P1_Ecommand>
<my:P1_imitation>0</my:P1_imitation>
<my:P1_restraint>0</my:P1_restraint>
<my:P1_ruleswitch>0</my:P1_ruleswitch>
</my:group3>
<my:group3>
<my:P1_action>touch your head</my:P1_action>
<my:P1_go-nogo>1</my:P1_go-nogo>
<my:P1_score>3</my:P1_score>
<my:P1_delay>0</my:P1_delay>
<my:P1_trial>5</my:P1_trial>
<my:P1_Ecommand>0</my:P1_Ecommand>
<my:P1_imitation>0</my:P1_imitation>
<my:P1_restraint>0</my:P1_restraint>
<my:P1_ruleswitch>0</my:P1_ruleswitch>
</my:group3>
<my:group3>
<my:P1_action>touch your nose</my:P1_action>
<my:P1_go-nogo>1</my:P1_go-nogo>
<my:P1_score>3</my:P1_score>
<my:P1_delay>0</my:P1_delay>
<my:P1_trial>6</my:P1_trial>
<my:P1_Ecommand>0</my:P1_Ecommand>
<my:P1_imitation>0</my:P1_imitation>
<my:P1_restraint>0</my:P1_restraint>
<my:P1_ruleswitch>0</my:P1_ruleswitch>
</my:group3>
<my:group3>
<my:P1_action>clap your hands</my:P1_action>
<my:P1_go-nogo>1</my:P1_go-nogo>
<my:P1_score>3</my:P1_score>
<my:P1_delay>0</my:P1_delay>
<my:P1_trial>7</my:P1_trial>
<my:P1_Ecommand>0</my:P1_Ecommand>
<my:P1_imitation>0</my:P1_imitation>
<my:P1_restraint>0</my:P1_restraint>
<my:P1_ruleswitch>0</my:P1_ruleswitch>
</my:group3>
<my:group3>
<my:P1_action>touch your nose</my:P1_action>
<my:P1_go-nogo>0</my:P1_go-nogo>
<my:P1_score>0</my:P1_score>
<my:P1_delay>0</my:P1_delay>
<my:P1_trial>8</my:P1_trial>
<my:P1_Ecommand>0</my:P1_Ecommand>
<my:P1_imitation>0</my:P1_imitation>
<my:P1_restraint>0</my:P1_restraint>
<my:P1_ruleswitch>0</my:P1_ruleswitch>
</my:group3>
<my:group3>
<my:P1_action>touch your ears</my:P1_action>
<my:P1_go-nogo>0</my:P1_go-nogo>
<my:P1_score>0</my:P1_score>
<my:P1_delay>0</my:P1_delay>
<my:P1_trial>9</my:P1_trial>
<my:P1_Ecommand>0</my:P1_Ecommand>
<my:P1_imitation>0</my:P1_imitation>
<my:P1_restraint>0</my:P1_restraint>
<my:P1_ruleswitch>0</my:P1_ruleswitch>
</my:group3>
<my:group3>
<my:P1_action>touch your tummy</my:P1_action>
<my:P1_go-nogo>0</my:P1_go-nogo>
<my:P1_score>0</my:P1_score>
<my:P1_delay>0</my:P1_delay>
<my:P1_trial>10</my:P1_trial>
<my:P1_Ecommand>0</my:P1_Ecommand>
<my:P1_imitation>0</my:P1_imitation>
<my:P1_restraint>0</my:P1_restraint>
<my:P1_ruleswitch>0</my:P1_ruleswitch>
</my:group3>
<my:group3>
<my:P1_action>touch your eyes</my:P1_action>
<my:P1_go-nogo>0</my:P1_go-nogo>
<my:P1_score>1</my:P1_score>
<my:P1_delay>0</my:P1_delay>
<my:P1_trial>11</my:P1_trial>
<my:P1_Ecommand>0</my:P1_Ecommand>
<my:P1_imitation>0</my:P1_imitation>
<my:P1_restraint>1</my:P1_restraint>
<my:P1_ruleswitch>0</my:P1_ruleswitch>
</my:group3>
<my:group3>
<my:P1_action>touch your eyes</my:P1_action>
<my:P1_go-nogo>1</my:P1_go-nogo>
<my:P1_score>3</my:P1_score>
<my:P1_delay>0</my:P1_delay>
<my:P1_trial>12</my:P1_trial>
<my:P1_Ecommand>0</my:P1_Ecommand>
<my:P1_imitation>0</my:P1_imitation>
<my:P1_restraint>0</my:P1_restraint>
<my:P1_ruleswitch>0</my:P1_ruleswitch>
</my:group3>
</my:group2>
<my:P1_trials>9</my:P1_trials>
<my:P1_gotrials>5</my:P1_gotrials>
<my:P1_nogotrials>4</my:P1_nogotrials>
<my:T1_gotrials>6</my:T1_gotrials>
<my:T1_nogotrials>6</my:T1_nogotrials>
<my:T1_trials>12</my:T1_trials>
<my:T2_gotrials>0</my:T2_gotrials>
<my:T2_nogotrials>0</my:T2_nogotrials>
<my:T2_trials>0</my:T2_trials>
<my:P1_notplay/>
<my:group4>
<my:group5>
<my:T1_trial>1</my:T1_trial>
<my:T1_go-nogo>1</my:T1_go-nogo>
<my:T1_score>3</my:T1_score>
<my:T1_delay>1</my:T1_delay>
<my:T1_action>Touch your tongue</my:T1_action>
</my:group5>
<my:group5>
<my:T1_trial>2</my:T1_trial>
<my:T1_go-nogo>1</my:T1_go-nogo>
<my:T1_score>3</my:T1_score>
<my:T1_delay>0</my:T1_delay>
<my:T1_action>Touch your teeth</my:T1_action>
</my:group5>
<my:group5>
<my:T1_trial>3</my:T1_trial>
<my:T1_go-nogo>0</my:T1_go-nogo>
<my:T1_score>0</my:T1_score>
<my:T1_delay>0</my:T1_delay>
<my:T1_action>Touch your ear</my:T1_action>
</my:group5>
<my:group5>
<my:T1_trial>4</my:T1_trial>
<my:T1_go-nogo>1</my:T1_go-nogo>
<my:T1_score>3</my:T1_score>
<my:T1_delay>0</my:T1_delay>
<my:T1_action>Clap your hands</my:T1_action>
</my:group5>
<my:group5>
<my:T1_trial>5</my:T1_trial>
<my:T1_go-nogo>0</my:T1_go-nogo>
<my:T1_score>0</my:T1_score>
<my:T1_delay>0</my:T1_delay>
<my:T1_action>Clap your hands</my:T1_action>
</my:group5>
<my:group5>
<my:T1_trial>6</my:T1_trial>
<my:T1_go-nogo>0</my:T1_go-nogo>
<my:T1_score>0</my:T1_score>
<my:T1_delay>0</my:T1_delay>
<my:T1_action>Touch your eyes</my:T1_action>
</my:group5>
<my:group5>
<my:T1_trial>7</my:T1_trial>
<my:T1_go-nogo>0</my:T1_go-nogo>
<my:T1_score>0</my:T1_score>
<my:T1_delay>0</my:T1_delay>
<my:T1_action>Touch your feet</my:T1_action>
</my:group5>
<my:group5>
<my:T1_trial>8</my:T1_trial>
<my:T1_go-nogo>1</my:T1_go-nogo>
<my:T1_score>3</my:T1_score>
<my:T1_delay>0</my:T1_delay>
<my:T1_action>Touch your nose</my:T1_action>
</my:group5>
<my:group5>
<my:T1_trial>9</my:T1_trial>
<my:T1_go-nogo>0</my:T1_go-nogo>
<my:T1_score>1</my:T1_score>
<my:T1_delay>0</my:T1_delay>
<my:T1_action>Touch your nose</my:T1_action>
</my:group5>
<my:group5>
<my:T1_trial>10</my:T1_trial>
<my:T1_go-nogo>1</my:T1_go-nogo>
<my:T1_score>3</my:T1_score>
<my:T1_delay>0</my:T1_delay>
<my:T1_action>Touch your tummy</my:T1_action>
</my:group5>
<my:group5>
<my:T1_trial>11</my:T1_trial>
<my:T1_go-nogo>0</my:T1_go-nogo>
<my:T1_score>0</my:T1_score>
<my:T1_delay>0</my:T1_delay>
<my:T1_action>Wave your hand</my:T1_action>
</my:group5>
<my:group5>
<my:T1_trial>12</my:T1_trial>
<my:T1_go-nogo>1</my:T1_go-nogo>
<my:T1_score>3</my:T1_score>
<my:T1_delay>0</my:T1_delay>
<my:T1_action>Touch your head</my:T1_action>
</my:group5>
</my:group4>
<my:group6>
<my:group7>
<my:T2_trial>1</my:T2_trial>
<my:T2_go-nogo>0</my:T2_go-nogo>
<my:T2_score/>
<my:T2_delay>0</my:T2_delay>
<my:T2_action>Touch your tongue</my:T2_action>
</my:group7>
<my:group7>
<my:T2_trial>2</my:T2_trial>
<my:T2_go-nogo>0</my:T2_go-nogo>
<my:T2_score/>
<my:T2_delay>0</my:T2_delay>
<my:T2_action>Touch your teeth</my:T2_action>
</my:group7>
<my:group7>
<my:T2_trial>3</my:T2_trial>
<my:T2_go-nogo>1</my:T2_go-nogo>
<my:T2_score/>
<my:T2_delay>0</my:T2_delay>
<my:T2_action>Touch your ear</my:T2_action>
</my:group7>
<my:group7>
<my:T2_trial>4</my:T2_trial>
<my:T2_go-nogo>0</my:T2_go-nogo>
<my:T2_score/>
<my:T2_delay>0</my:T2_delay>
<my:T2_action>Clap your hands</my:T2_action>
</my:group7>
<my:group7>
<my:T2_trial>5</my:T2_trial>
<my:T2_go-nogo>1</my:T2_go-nogo>
<my:T2_score/>
<my:T2_delay>0</my:T2_delay>
<my:T2_action>Clap your hands</my:T2_action>
</my:group7>
<my:group7>
<my:T2_trial>6</my:T2_trial>
<my:T2_go-nogo>1</my:T2_go-nogo>
<my:T2_score/>
<my:T2_delay>0</my:T2_delay>
<my:T2_action>Touch your eyes</my:T2_action>
</my:group7>
<my:group7>
<my:T2_trial>7</my:T2_trial>
<my:T2_go-nogo>1</my:T2_go-nogo>
<my:T2_score/>
<my:T2_delay>0</my:T2_delay>
<my:T2_action>Touch your feet</my:T2_action>
</my:group7>
<my:group7>
<my:T2_trial>8</my:T2_trial>
<my:T2_go-nogo>0</my:T2_go-nogo>
<my:T2_score/>
<my:T2_delay>0</my:T2_delay>
<my:T2_action>Touch your nose</my:T2_action>
</my:group7>
<my:group7>
<my:T2_trial>9</my:T2_trial>
<my:T2_go-nogo>1</my:T2_go-nogo>
<my:T2_score/>
<my:T2_delay>0</my:T2_delay>
<my:T2_action>Touch your nose</my:T2_action>
</my:group7>
<my:group7>
<my:T2_trial>10</my:T2_trial>
<my:T2_go-nogo>0</my:T2_go-nogo>
<my:T2_score/>
<my:T2_delay>0</my:T2_delay>
<my:T2_action>Touch your tummy</my:T2_action>
</my:group7>
<my:group7>
<my:T2_trial>11</my:T2_trial>
<my:T2_go-nogo>1</my:T2_go-nogo>
<my:T2_score/>
<my:T2_delay>0</my:T2_delay>
<my:T2_action>Wave your hand</my:T2_action>
</my:group7>
<my:group7>
<my:T2_trial>12</my:T2_trial>
<my:T2_go-nogo>0</my:T2_go-nogo>
<my:T2_score/>
<my:T2_delay>0</my:T2_delay>
<my:T2_action>Touch your head</my:T2_action>
</my:group7>
</my:group6>
</my:myFields>
最佳答案
根据我的经验，xmlToDataFrame 仅在 XML 已经以非常一致的方式构建时才有效。您正在使用的数据以多种不同的方式构建:
# Assuming you've already read your data into a character vector called `xml_file
xml_file <- xmlParse(xml_file)
xml_file <- xmlToList(xml_file)
stack(sapply(xml_file, length))
values ind
1 22 SPSS
2 0 notes_t1
3 0 note_t2
4 1 bachildpres30
5 1 baparpres30
6 1 bapassptgo
7 1 bapassptnogo
8 1 bamissgame
9 1 P1_B3
10 1 P1_B2
11 1 P1_B1
12 1 P1_B0
13 1 P1_A3
14 1 P1_A2
15 1 P1_A1
16 1 P1_A0
17 1 P1_DelayTotal
18 12 group2
19 1 P1_trials
20 1 P1_gotrials
21 1 P1_nogotrials
22 1 T1_gotrials
23 1 T1_nogotrials
24 1 T1_trials
25 1 T2_gotrials
26 1 T2_nogotrials
27 1 T2_trials
28 0 P1_notplay
29 12 group4
30 12 group6
31 1 .attrs
所以你的大部分节点都包含一个值。有几个是空的。 “SPSS”节点包含22个值，名称各不相同，“group2”、“group4”、“group6”均包含12个节点，每个节点包含多个值，但各节点的值相似。当我查看 Excel 在导入文件时做了什么时，它将 12 个节点的组件堆叠在一起，然后将所有 22 个“SPSS”组件与所有单值节点串在一起并重复该字符串与通过堆叠 12 节点组件创建的行一样多，然后将这两个部分按列绑定(bind)在一起。
为此，从 12 节点 block 中分离出长字符串:
xml_file_singles <- xml_file[sapply(xml_file, length) != 12]
xml_file_singles[sapply(xml_file_singles, length) == 0] <- NA
xml_file_singles <- unlist(xml_file_singles)
xml_file_multiples <- xml_file[sapply(xml_file, length) == 12]
现在获取 12 节点 block 并将每个 block 转换为数据框:
xml_file_multiples <- lapply(1:length(xml_file_multiples), function(i) {
x <- lapply(xml_file_multiples[[i]], function(y) {
data.frame(as.list(unlist(y)), stringsAsFactors = FALSE)})
x <- do.call("rbind", x)
cbind("group" = names(xml_file_multiples)[i], x)
})
现在使用 plyr 包的 rbind.fill 函数将所有新数据框放在一起:
require(plyr)
xml_file_multiples <- do.call("rbind.fill", xml_file_multiples)
现在 cbind 你的一长串值到你绑定(bind)的数据帧:
xml_final <- cbind(as.list(xml_file_singles), xml_file_multiples,
stringsAsFactors = FALSE)
这种方法与 Excel 的方法一样，引入了大量的 NA，因为不同的 12 节点 block 的列名都略有不同。如果您在调用 rbind.fill 之前执行此操作:
xml_file_multiples <- lapply(1:length(xml_file_multiples), function(i) {
x <- lapply(xml_file_multiples[[i]], function(y) {
data.frame(as.list(unlist(y)), stringsAsFactors = FALSE)})
x <- do.call("rbind", x)
x <- cbind("group" = names(xml_file_multiples)[i], x)
colnames(x) <- gsub("^\\w\\d_", "", colnames(x))
x
})
您会生成较少的 NA，因为您会生成较少的冗余列，但随后您将不得不依赖“组”列中的值来跟踪哪些行最初出现在哪个节点中。
关于xml - 将 Infopath .XML 表单导入 R 中的数据框，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/16593301/
总的来说，我对ruby还比较陌生，我正在为我正在创建的对象编写一些rspec测试用例。许多测试用例都非常基础，我只是想确保正确填充和返回值。我想知道是否有办法使用循环结构来执行此操作。不必为我要测试的每个方法都设置一个assertEquals。例如:describeitem,"TestingtheItem"doit"willhaveanullvaluetostart"doitem=Item.new#HereIcoulddotheitem.name.shouldbe_nil#thenIcoulddoitem.category.shouldbe_nilendend但我想要一些方法来使用
我试图在一个项目中使用rake，如果我把所有东西都放到Rakefile中，它会很大并且很难读取/找到东西，所以我试着将每个命名空间放在lib/rake中它自己的文件中，我添加了这个到我的rake文件的顶部:Dir['#{File.dirname(__FILE__)}/lib/rake/*.rake'].map{|f|requiref}它加载文件没问题，但没有任务。我现在只有一个.rake文件作为测试，名为“servers.rake”，它看起来像这样:namespace:serverdotask:testdoputs"test"endend所以当我运行rakeserver:testid时
作为我的Rails应用程序的一部分，我编写了一个小导入程序，它从我们的LDAP系统中吸取数据并将其塞入一个用户表中。不幸的是，与LDAP相关的代码在遍历我们的32K用户时泄漏了大量内存，我一直无法弄清楚如何解决这个问题。这个问题似乎在某种程度上与LDAP库有关，因为当我删除对LDAP内容的调用时，内存使用情况会很好地稳定下来。此外，不断增加的对象是Net::BER::BerIdentifiedString和Net::BER::BerIdentifiedArray，它们都是LDAP库的一部分。当我运行导入时，内存使用量最终达到超过1GB的峰值。如果问题存在，我需要找到一些方法来更正我的代
Rails2.3可以选择随时使用RouteSet#add_configuration_file添加更多路由。是否可以在Rails3项目中做同样的事情？ 最佳答案 在config/application.rb中:config.paths.config.routes在Rails3.2(也可能是Rails3.1)中，使用:config.paths["config/routes"] 关于ruby-on-rails-Rails3中的多个路由文件，我们在StackOverflow上找到一个类似的问题
我得到了一个包含嵌套链接的表单。编辑时链接字段为空的问题。这是我的表格:Editingkategori{:action=>'update',:id=>@konkurrancer.id})do|f|%>'Trackingurl',:style=>'width:500;'%>'Editkonkurrence'%>|我的konkurrencer模型:has_one:link我的链接模型:classLink我的konkurrancer编辑操作:defedit@konkurrancer=Konkurrancer.find(params[:id])@konkurrancer.link_attrib
我主要使用Ruby来执行此操作，但到目前为止我的攻击计划如下:使用gemsrdf、rdf-rdfa和rdf-microdata或mida来解析给定任何URI的数据。我认为最好映射到像schema.org这样的统一模式，例如使用这个yaml文件，它试图描述数据词汇表和opengraph到schema.org之间的转换:#SchemaXtoschema.orgconversion#data-vocabularyDV:name:namestreet-address:streetAddressregion:addressRegionlocality:addressLocalityphoto:i
我需要从一个View访问多个模型。以前，我的links_controller仅用于提供以不同方式排序的链接资源。现在我想包括一个部分(我假设)显示按分数排序的顶级用户(@users=User.all.sort_by(&:score))我知道我可以将此代码插入每个链接操作并从View访问它，但这似乎不是“ruby方式”，我将需要在不久的将来访问更多模型。这可能会变得很脏，是否有针对这种情况的任何技术？注意事项:我认为我的应用程序正朝着单一格式和动态页面内容的方向发展，本质上是一个典型的网络应用程序。我知道before_filter但考虑到我希望应用程序进入的方向，这似乎很麻烦。最终从任何
我有一个对象has_many应呈现为xml的子对象。这不是问题。我的问题是我创建了一个Hash包含此数据，就像解析器需要它一样。但是rails自动将整个文件包含在.........我需要摆脱type="array"和我该如何处理？我没有在文档中找到任何内容。 最佳答案 我遇到了同样的问题；这是我的XML:我在用这个:entries.to_xml将散列数据转换为XML，但这会将条目的数据包装到中所以我修改了:entries.to_xml(root:"Contacts")但这仍然将转换后的XML包装在“联系人”中，将我的XML代码修改为
我在我的项目中添加了一个系统来重置用户密码并通过电子邮件将密码发送给他，以防他忘记密码。昨天它运行良好(当我实现它时)。当我今天尝试启动服务器时，出现以下错误。=>BootingWEBrick=>Rails3.2.1applicationstartingindevelopmentonhttp://0.0.0.0:3000=>Callwith-dtodetach=>Ctrl-CtoshutdownserverExiting/Users/vinayshenoy/.rvm/gems/ruby-1.9.3-p0/gems/actionmailer-3.2.1/lib/action_mailer
刚入门rails，开始慢慢理解。有人可以解释或给我一些关于在application_controller中编码的好处或时间和原因的想法吗？有哪些用例。您如何为Rails应用程序使用应用程序Controller？我不想在那里放太多代码，因为据我了解，每个请求都会调用此Controller。这是真的？ 最佳答案 ApplicationController实际上是您应用程序中的每个其他Controller都将从中继承的类(尽管这不是强制性的)。我同意不要用太多代码弄乱它并保持干净整洁的态度，尽管在某些情况下ApplicationContr