我正在开发一个 Java 项目，其中有一个 HTML 编辑器，用户可以在 html 编辑器 (ckeditor) 中输入文本，实际的 HTML 文本保存在数据库中。
现在当用户下次再来编辑相同的文本时，我想通过从数据库中比较来显示两者之间的区别。
我面临的最重要的问题是，即使任何比较器工具知道斜体样式已更改为粗体，比较器的输出也是 删除线 斜体 并显示插入了 Bold 来代替它。
但这并不能解释实际编辑的意图或行动。意图/ Action 是用户将其从斜体变为粗体。我正在寻找的是一种工具，它不会显示斜体一词已被删除并添加粗体来代替它，而是会首先显示 Italic 单词/句子，这是删除线和替换通过 Bold 单词/句子。
我希望我的意思是清楚的。很长一段时间以来，我一直在努力实现这一目标。我尝试了 diff_match_patch、daisydiff 等，但没有任何帮助。
我的试验:
/*
String oldTextHtml = mnotes1.getMnotetext();
String newTextHTML = mnotes.getMnotetext();
oldTextHtml = oldTextHtml.replace("<br>","\n");
oldTextHtml = Jsoup.clean(oldTextHtml, Whitelist.basic());
oldTextHtml = Jsoup.parse(oldTextHtml).text();
newTextHTML = newTextHTML.replace("<br>","\n");
newTextHTML = Jsoup.clean(newTextHTML,Whitelist.basic());
newTextHTML = Jsoup.parse(newTextHTML).text();
diff_match_patch diffMatchPatch = new diff_match_patch();
LinkedList<diff_match_patch.Diff> deltas = diffMatchPatch.diff_main(oldTextHtml, newTextHTML);
diffMatchPatch.diff_cleanupSemantic(deltas);
newText += diffMatchPatch.diff_prettyHtml(deltas);
groupNoteHistory.setWhatHasChanged("textchange");
groupNoteHistory.setNewNoteText(newText);
noEdit = true;
*/
List<String> oldTextList = Arrays.asList(mnotes1.getMnotetext().split("(\\.|\\n)"));
List<String> newTextList = Arrays.asList(mnotes.getMnotetext().split("(\\.|\\n)"));
if (oldTextList.size() == newTextList.size()) {
for (int current = 0; current < oldTextList.size(); current++) {
if (isLineDifferent(oldTextList.get(current), newTextList.get(current))) {
noEdit = true;
diff_match_patch diffMatchPatch = new diff_match_patch();
LinkedList<diff_match_patch.Diff> deltas = diffMatchPatch.diff_main(oldTextList.get(current), newTextList.get(current));
diffMatchPatch.diff_cleanupSemantic(deltas);
newText += diffMatchPatch.diff_prettyHtml(deltas);
groupNoteHistory.setWhatHasChanged("textchange");
groupNoteHistory.setNewNoteText(newText);
}
}
} else {
if (!(mnotes.getMnotetext().equals(mnotes1.getMnotetext()))) {
if (isLineDifferent(mnotes1.getMnotetext(), mnotes.getMnotetext())) {
diff_match_patch diffMatchPatch = new diff_match_patch();
LinkedList<diff_match_patch.Diff> deltas = diffMatchPatch.diff_main(mnotes1.getMnotetext(),
mnotes.getMnotetext());
diffMatchPatch.diff_cleanupSemantic(deltas);
newText += diffMatchPatch.diff_prettyHtml(deltas);
groupNoteHistory.setWhatHasChanged("textchange");
noEdit = true;
}
groupNoteHistory.setNewNoteText(newText);
groupNoteHistory.setWhatHasChanged("textchange");
}
}
如果有人知道我如何实现这一目标，请告诉我。非常感谢。 :-)
编辑
我被要求提供图片。解释，然后是图像。
Old text : <style= bold>Hello</style>
new Text : <style = Italic>Hello</style>
预期的差异输出:
最佳答案
最近我做了一个关于在 java 上实现 diff 命令和许多其他功能的开源库的概念探索。
基本上我比较了两个 java 文件并得到了它们之间的修改行，有了这些信息我认为很容易实现你想要的。
基本上我在 src/test/resources/files 文件夹下有两个 java 文件
文件1
package com.onuba.car.javadiff;
import difflib.Chunk;
import difflib.Delta;
import difflib.DiffUtils;
import difflib.Patch;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class FileComparator {
private final File original;
private final File revised;
public FileComparator(File original, File revised) {
this.original = original;
this.revised = revised;
}
public List<Chunk> getChangesFromOriginal() throws IOException {
return getChunksByType(Delta.TYPE.CHANGE);
}
public List<Chunk> getInsertsFromOriginal() throws IOException {
return getChunksByType(Delta.TYPE.INSERT);
}
public List<Chunk> getDeletesFromOriginal() throws IOException {
return getChunksByType(Delta.TYPE.DELETE);
}
private List<Chunk> getChunksByType(Delta.TYPE type) throws IOException {
final List<Chunk> listOfChanges = new ArrayList<Chunk>();
final List<Delta> deltas = getDeltas();
for (Delta delta : deltas) {
if (delta.getType() == type) {
listOfChanges.add(delta.getRevised());
}
}
return listOfChanges;
}
private List<Delta> getDeltas() throws IOException {
final List<String> originalFileLines = fileToLines(original);
final List<String> revisedFileLines = fileToLines(revised);
final Patch patch = DiffUtils.diff(originalFileLines, revisedFileLines);
return patch.getDeltas();
}
private List<String> fileToLines(File file) throws IOException {
final List<String> lines = new ArrayList<String>();
String line;
final BufferedReader in = new BufferedReader(new FileReader(file));
while ((line = in.readLine()) != null) {
lines.add(line);
}
return lines;
}
<style= bold>Hello</style>
}
文件2
package com.onuba.car.javadiff;
import difflib.Chunk;
import difflib.Delta;
import difflib.DiffUtils;
import difflib.Patch;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class FileComparator {
private final File original;
private final File revised;
public FileComparator(File original, File revised) {
this.original = original;
this.revised = revised;
}
public List<Chunk> getChangesFromOriginal() throws IOException {
return getChunksByType(Delta.TYPE.CHANGE);
}
public List<Chunk> getInsertsFromOriginal() throws IOException {
return getChunksByType(Delta.TYPE.INSERT);
}
public List<Chunk> getDeletesFromOriginal() throws IOException {
return getChunksByType(Delta.TYPE.DELETE);
}
private List<Chunk> getChunksByType(Delta.TYPE type) throws IOException {
final List<Chunk> listOfChanges = new ArrayList<Chunk>();
final List<Delta> deltas = getDeltas();
for (Delta delta : deltas) {
if (delta.getType() == type) {
listOfChanges.add(delta.getRevised());
}
}
return listOfChanges;
}
private List<Delta> getDeltas(String nuevoParam) throws IOException {
final List<String> originalFileLines = fileToLines(original);
final List<String> revisedFileLines = fileToLines(revised);
final Patch patch = DiffUtils.diff(originalFileLines, revisedFileLines);
return patch.getDeltas();
}
private List<String> fileToLines(File file, String nuevoParam) throws IOException {
final List<String> lines = new ArrayList<String>();
String line;
final BufferedReader in = new BufferedReader(new FileReader(file));
while ((line = in.readLine()) != null) {
lines.add(line);
}
return lines;
}
<style = Italic>Hello</style>
private void nuevoMetodoCool(File file) {
}
}
一个简短的 FileComparator 类(记住它是一个 POC :D)
package com.onuba.car.javadiff;
import difflib.Chunk;
import difflib.Delta;
import difflib.DiffUtils;
import difflib.Patch;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class FileComparator {
private final File original;
private final File revised;
public FileComparator(File original, File revised) {
this.original = original;
this.revised = revised;
}
public List<Chunk> getChangesFromOriginal() throws IOException {
return getChunksByType(Delta.TYPE.CHANGE);
}
public List<Chunk> getInsertsFromOriginal() throws IOException {
return getChunksByType(Delta.TYPE.INSERT);
}
public List<Chunk> getDeletesFromOriginal() throws IOException {
return getChunksByType(Delta.TYPE.DELETE);
}
private List<Chunk> getChunksByType(Delta.TYPE type) throws IOException {
final List<Chunk> listOfChanges = new ArrayList<Chunk>();
final List<Delta> deltas = getDeltas();
for (Delta delta : deltas) {
if (delta.getType() == type) {
listOfChanges.add(delta.getRevised());
}
}
return listOfChanges;
}
private List<Delta> getDeltas() throws IOException {
final List<String> originalFileLines = fileToLines(original);
final List<String> revisedFileLines = fileToLines(revised);
final Patch patch = DiffUtils.diff(originalFileLines, revisedFileLines);
return patch.getDeltas();
}
private List<String> fileToLines(File file) throws IOException {
final List<String> lines = new ArrayList<String>();
String line;
final BufferedReader in = new BufferedReader(new FileReader(file));
while ((line = in.readLine()) != null) {
lines.add(line);
}
return lines;
}
}
还有一个 Junit
package com.onuba.car.javadiff.test;
import static org.junit.Assert.fail;
import java.io.File;
import java.io.IOException;
import java.util.List;
import org.junit.Test;
import com.everis.car.javadiff.FileComparator;
import difflib.Chunk;
public class FileComparatorTest {
private final File original = new File("./src/test/resources/files/FileComparatorv1.java");
private final File revised = new File("./src/test/resources/files/FileComparatorv2.java");
@Test
public void shouldGetChangesBetweenFiles() {
final FileComparator comparator = new FileComparator(original, revised);
try {
final List<Chunk> changesFromOriginal = comparator.getChangesFromOriginal();
final int changeNum = changesFromOriginal.size();
System.out.println("Tamaño de cambios: " + changeNum);
for (int i = 0; i < changeNum; i++) {
final Chunk change = changesFromOriginal.get(i);
final int firstLineOfFirstChange = change.getPosition() + 1;
final int changeSize = change.size();
//final String changeText = change.getLines().get(0).toString();
System.out.println("Cambio nº " + i);
System.out.println("firstLineOfFirstChange: " + firstLineOfFirstChange);
System.out.println("changeSize: " + changeSize);
System.out.println("change text: ");
showTest(change.getLines());
}
/*assertEquals(3, changesFromOriginal.size());
final Chunk firstChange = changesFromOriginal.get(0);
final int firstLineOfFirstChange = firstChange.getPosition() + 1;
final int firstChangeSize = firstChange.size();
assertEquals(2, firstLineOfFirstChange);
assertEquals(1, firstChangeSize);
final String firstChangeText = firstChange.getLines().get(0).toString();
assertEquals("Line 3 with changes", firstChangeText);
final Chunk secondChange = changesFromOriginal.get(1);
final int firstLineOfSecondChange = secondChange.getPosition() + 1;
final int secondChangeSize = secondChange.size();
assertEquals(4, firstLineOfSecondChange);
assertEquals(2, secondChangeSize);
final String secondChangeFirstLineText = secondChange.getLines().get(0).toString();
final String secondChangeSecondLineText = secondChange.getLines().get(1).toString();
assertEquals("Line 5 with changes and", secondChangeFirstLineText);
assertEquals("a new line", secondChangeSecondLineText);
final Chunk thirdChange = changesFromOriginal.get(2);
final int firstLineOfThirdChange = thirdChange.getPosition() + 1;
final int thirdChangeSize = thirdChange.size();
assertEquals(11, firstLineOfThirdChange);
assertEquals(1, thirdChangeSize);
final String thirdChangeText = thirdChange.getLines().get(0).toString();
assertEquals("Line 10 with changes", thirdChangeText);*/
} catch (IOException ioe) {
fail("Error running test shouldGetChangesBetweenFiles " + ioe.toString());
}
}
@Test
public void shouldGetInsertsBetweenFiles() {
final FileComparator comparator = new FileComparator(original, revised);
try {
final List<Chunk> insertsFromOriginal = comparator.getInsertsFromOriginal();
final int changeNum = insertsFromOriginal.size();
System.out.println("Tamaño de inserciones: " + changeNum);
for (int i = 0; i < changeNum; i++) {
final Chunk change = insertsFromOriginal.get(i);
final int firstLineOfFirstChange = change.getPosition() + 1;
final int changeSize = change.size();
//final String changeText = change.getLines().get(0).toString();
System.out.println("insercion nº " + i);
System.out.println("firstLineOfFirstInsertion: " + firstLineOfFirstChange);
System.out.println("insertion Size: " + changeSize);
System.out.println("insertion text: ");
showTest(change.getLines());
}
} catch (IOException ioe) {
fail("Error running test shouldGetInsertsBetweenFiles " + ioe.toString());
}
/*try {
final List<Chunk> insertsFromOriginal = comparator.getInsertsFromOriginal();
assertEquals(1, insertsFromOriginal.size());
final Chunk firstInsert = insertsFromOriginal.get(0);
final int firstLineOfFirstInsert = firstInsert.getPosition() + 1;
final int firstInsertSize = firstInsert.size();
assertEquals(7, firstLineOfFirstInsert);
assertEquals(1, firstInsertSize);
final String firstInsertText = firstInsert.getLines().get(0).toString();
assertEquals("new line 6.1", firstInsertText);
} catch (IOException ioe) {
fail("Error running test shouldGetInsertsBetweenFiles " + ioe.toString());
}*/
}
@Test
public void shouldGetDeletesBetweenFiles() {
final FileComparator comparator = new FileComparator(original, revised);
try {
final List<Chunk> deletesFromOriginal = comparator.getDeletesFromOriginal();
final int changeNum = deletesFromOriginal.size();
System.out.println("Tamaño de deletes: " + changeNum);
for (int i = 0; i < changeNum; i++) {
final Chunk change = deletesFromOriginal.get(i);
final int firstLineOfFirstChange = change.getPosition() + 1;
final int changeSize = change.size();
//final String changeText = change.getLines().get(0).toString();
System.out.println("delete nº " + i);
System.out.println("firstLineOfFirstDelete: " + firstLineOfFirstChange);
System.out.println("delete Size: " + changeSize);
System.out.println("delete text: ");
showTest(change.getLines());
}
} catch (IOException ioe) {
fail("Error running test shouldGetInsertsBetweenFiles " + ioe.toString());
}
/*try {
final List<Chunk> deletesFromOriginal = comparator.getDeletesFromOriginal();
assertEquals(1, deletesFromOriginal.size());
final Chunk firstDelete = deletesFromOriginal.get(0);
final int firstLineOfFirstDelete = firstDelete.getPosition() + 1;
assertEquals(1, firstLineOfFirstDelete);
} catch (IOException ioe) {
fail("Error running test shouldGetDeletesBetweenFiles " + ioe.toString());
}*/
}
private void showTest(List<?> texts) {
if (texts != null) {
for (Object s : texts) {
System.out.println(s.toString());
}
}
}
}
最后是我的 pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.onuba.car</groupId>
<artifactId>javadiffpoc</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>JavaDiff :: POC</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- GUAVA -->
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>15.0</version>
</dependency>
<dependency>
<groupId>com.googlecode.java-diff-utils</groupId>
<artifactId>diffutils</artifactId>
<version>1.2.1</version>
</dependency>
<!-- Logger -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-access</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.6.4</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>2.4</version>
</plugin>
</plugins>
</build>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
</project>
抱歉，一些日志和西类牙语的一些小东西 :D，也许有了它你可以实现你想要的。
库主页:https://code.google.com/p/java-diff-utils/页面末尾有一个教程链接(西类牙语)
希望有所帮助!
更新
我做了一个简单的类，它生成了一个文件，其中的差异作为删除线与这段代码(我不太了解您想要的格式，如果需要，您可以添加更多装饰器)
package com.onuba.car.javadiff;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.RandomAccessFile;
import java.util.ArrayList;
import java.util.List;
import difflib.Chunk;
public class Comparer {
private final File original = new File("./src/test/resources/files/FileComparatorv1.java");
private final File revised = new File("./src/test/resources/files/FileComparatorv2.java");
public static void main(String[] args) {
final Comparer comparer = new Comparer();
comparer.createDiffFile();
}
private void createDiffFile() {
PrintWriter diffFile = null;
//RandomAccessFile diffFile = null;
RandomAccessFile oldFile = null;
try {
//diffFile = new RandomAccessFile(new File("./diffFile_" + System.currentTimeMillis()), "rw");
diffFile = new PrintWriter("./diffFile_" + System.currentTimeMillis(), "UTF-8");
oldFile = new RandomAccessFile(original, "r");
final FileComparator comparator = new FileComparator(original, revised);
final List<Chunk> changesFromOriginal = comparator.getChangesFromOriginal();
final int changeNum = changesFromOriginal.size();
System.out.println("Tamaño de cambios: " + changeNum);
final List<Integer> changesIndex = new ArrayList<Integer>();
for (Chunk change : changesFromOriginal) {
changesIndex.add(change.getPosition());
}
String line = oldFile.readLine();
int lineIndex = 0;
while (line != null) {
if (changesIndex.contains(lineIndex)) {
String strikeLine = "From: <strike-through color=yellow>" + line + "</strike-through>";
diffFile.print(strikeLine + " To: <strong>");
for (Object s : changesFromOriginal.get(changesIndex.indexOf(lineIndex)).getLines()) {
diffFile.println(s.toString());
}
diffFile.print("</strong>");
} else {
diffFile.println(line);
}
line = oldFile.readLine();
lineIndex++;
}
} catch (IOException e) {
} finally {
try {
if (diffFile != null) {
diffFile.close();
}
if (oldFile != null) {
oldFile.close();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
输出文件是
package com.onuba.car.javadiff;
import difflib.Chunk;
import difflib.Delta;
import difflib.DiffUtils;
import difflib.Patch;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class FileComparator {
private final File original;
private final File revised;
public FileComparator(File original, File revised) {
this.original = original;
this.revised = revised;
}
public List<Chunk> getChangesFromOriginal() throws IOException {
return getChunksByType(Delta.TYPE.CHANGE);
}
public List<Chunk> getInsertsFromOriginal() throws IOException {
return getChunksByType(Delta.TYPE.INSERT);
}
public List<Chunk> getDeletesFromOriginal() throws IOException {
return getChunksByType(Delta.TYPE.DELETE);
}
private List<Chunk> getChunksByType(Delta.TYPE type) throws IOException {
final List<Chunk> listOfChanges = new ArrayList<Chunk>();
final List<Delta> deltas = getDeltas();
for (Delta delta : deltas) {
if (delta.getType() == type) {
listOfChanges.add(delta.getRevised());
}
}
return listOfChanges;
}
From: <strike-through color=yellow> private List<Delta> getDeltas() throws IOException {</strike-through> To: <strong> private List<Delta> getDeltas(String nuevoParam) throws IOException {
</strong>
final List<String> originalFileLines = fileToLines(original);
final List<String> revisedFileLines = fileToLines(revised);
final Patch patch = DiffUtils.diff(originalFileLines, revisedFileLines);
return patch.getDeltas();
}
From: <strike-through color=yellow> private List<String> fileToLines(File file) throws IOException {</strike-through> To: <strong> private List<String> fileToLines(File file, String nuevoParam) throws IOException {
</strong> final List<String> lines = new ArrayList<String>();
String line;
final BufferedReader in = new BufferedReader(new FileReader(file));
while ((line = in.readLine()) != null) {
lines.add(line);
}
return lines;
}
From: <strike-through color=yellow> <style= bold>Hello</style></strike-through> To: <strong> <style = Italic>Hello</style>
private void nuevoMetodoCool(File file) {
}
</strong>
}
这对你有用吗？
关于Java : Compare, 标记和解释 Java 中的 HTML 文本，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33996988/
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
我想将html转换为纯文本。不过，我不想只删除标签，我想智能地保留尽可能多的格式。为插入换行符标签，检测段落并格式化它们等。输入非常简单，通常是格式良好的html(不是整个文档，只是一堆内容，通常没有anchor或图像)。我可以将几个正则表达式放在一起，让我达到80%，但我认为可能有一些现有的解决方案更智能。 最佳答案 首先，不要尝试为此使用正则表达式。很有可能你会想出一个脆弱/脆弱的解决方案，它会随着HTML的变化而崩溃，或者很难管理和维护。您可以使用Nokogiri快速解析HTML并提取文本:require'nokogiri'h
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
我想向我的Controller传递一个参数，它是一个简单的复选框，但我不知道如何在模型的form_for中引入它，这是我的观点:{:id=>'go_finance'}do|f|%>Transferirde:para:Entrada:"input",:placeholder=>"Quantofoiganho?"%>Saída:"output",:placeholder=>"Quantofoigasto?"%>Nota:我想做一个额外的复选框，但我该怎么做，模型中没有一个对象，而是一个要检查的对象，以便在Controller中创建一个ifelse，如果没有检查，请帮助我，非常感谢,谢谢
我注意到像bundler这样的项目在每个specfile中执行requirespec_helper我还注意到rspec使用选项--require，它允许您在引导rspec时要求一个文件。您还可以将其添加到.rspec文件中，因此只要您运行不带参数的rspec就会添加它。使用上述方法有什么缺点可以解释为什么像bundler这样的项目选择在每个规范文件中都需要spec_helper吗？ 最佳答案 我不在Bundler上工作，所以我不能直接谈论他们的做法。并非所有项目都checkin.rspec文件。原因是这个文件，通常按照当前的惯例，只