我想使用Class :: DBI创建一个新对象.该对象的一个字段是BLOB类型.我有一个文件句柄我想用于这个数据,但显然,这样做是行不通的:
my $item = My::Class::DBI::Class->insert({
foo => $bar,
biz => $baz,
blob => $my_filehandle
});
我缺少一些技巧吗？
谢谢!
我正在尝试设置一个我将在自定义JSP标记中引用的变量,所以我在JSP中有这样的东西:
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<c:set var="path" value="test"/>
但是,当JSP运行时,我收到此错误:
java.lang.AbstractMethodError: javax.servlet.jsp.PageContext.getELContext()Ljavax/el/ELContext;
at org.apache.taglibs.standard.tag.common.core.SetSupport.doEndTag(SetSupport.java:140)
我正在使用JSTL 1.2运行Tomcat 5.5和Java 1.5.
我在这里做错了吗？
谢谢!
我需要在XSD架构中扩展一个元素.在原始模式中,元素定义为:
<xsd:element name="RemarkText">
<xsd:complexType>
<xsd:simpleContent>
<xsd:extension base="C-Infinite">
<xsd:attribute name="IdRef" type="IDREF" use="required"/>
</xsd:extension>
</xsd:simpleContent>
</xsd:complexType>
</xsd:element>
我似乎关于扩展的所有示例似乎都涉及扩展类型.如果这最初定义为:
<xsd:complexType name="RemarkText_Type">
<xsd:simpleContent>
<xsd:extension base="C-Infinite">
<xsd:attribute name="IdRef" type="IDREF" use="required"/>
</xsd:extension>
</xsd:simpleContent>
</xsd:complexType>
<xsd:element name="RemarkText" type="RemarkText_Type"/>
然后,我想我会知道该怎么做.
但是可以扩展元素而不是类型吗？
我正在尝试将文件从Flash小部件上传到我的rails应用程序,该应用程序使用attachment_fu来处理上传的图像.我使用flash上传,因为它可以轻松选择和上传多个文件.但是,当rails控制器尝试调用save!新创建的ActiveRecord对象时,我收到此错误:
ActiveRecord::RecordInvalid (Validation failed: Content type is not included in the list):
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/validations.rb:946:in `save_without_transactions!'
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/transactions.rb:112:in `save!'
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract/database_statements.rb:66:in `transaction'
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/transactions.rb:80:in `transaction'
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/transactions.rb:100:in `transaction'
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/transactions.rb:112:in `save!'
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/transactions.rb:120:in `rollback_active_record_state!'
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/transactions.rb:112:in `save!'
/app/controllers/photos_controller.rb:13:in `create'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:1158:in `send'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:1158:in `perform_action_without_filters'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:697:in `call_filters'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:689:in `perform_action_without_benchmark'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
因此,似乎没有正确发送内容类型.事实上,Flash正在发送一种内容类型application/octet-stream,我期望它image/png(对于这个特定的测试用例).
我执行上传的ActionScript 3.0代码如下所示:
var request:URLRequest = new URLRequest(paramObj.serverUrl + "/albums/" + paramObj.albumId + "/photos");
var variables:URLVariables = new URLVariables();
variables["photo[title]"] = file.name;
variables["authenticity_token"] = paramObj.authenticity_token;
variables["commit"] = "Upload Photo";
request.data = variables;
request.method = …我在将一个缩小的javascript文件检入Clearcase时遇到问题.有问题的文件是一行,远超过Clearcase强加的8000字符限制.
我知道javascript解释器在换行时插入分号会做一些棘手的事情,但我想知道在分号后添加换行符是否应该总是安全的.是否有可能这样做会改变javascript代码的含义？
我试图更像搜索结果返回结果
我的算法就是这个
def search_conditions(column, q)
vars = []
vars2 = []
vars << q
if q.size > 3
(q.size-2).times do |i|
vars2 << q[i..(i+2)]
next if i == 0
vars << q[i..-1]
vars << q[0..(q.size-1-i)]
vars << q[i % 2 == 0 ? (i/2)..(q.size-(i/2)) : (i/2)..(q.size-1-(i/2))] if i > 1
end
end
query = "#{column} ILIKE ?"
vars = (vars+vars2).uniq
return [vars.map { query }.join(' OR ')] + vars.map { |x| "%#{x}%" }
end
如果我搜索"Ruby on Rails",它将进行4种搜索方式.
1)删除左侧字母"uby on Rails".."ils" …