Expression Manager sample surveys/zh - Revision history

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	A user cannot submit a page with validation errors. He will be immediately warned if he entered wrong information:		A user cannot submit a page with validation errors. They will be immediately warned if they entered wrong information:

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			你可以在下面找到一组样本调查，以演示（和测试）表达式管理器是如何用于增强你的调查。这些调查可以在安装目录下的docs/demosurveys文件夹中找到。
	=相关性，裁剪和方程式=		=相关性，裁剪和方程式=

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	= 简介 =		= 简介 =

	~~你可以在下面找到一组样本调查，以演示（和测试）~~表达式管理器是如何用~~于增强~~你的~~调查。这些调查可以在安装目录下的docs/demosurveys文件夹中找到~~。		学习如何使用表达式管理器的最佳方法是使用工作示例并根据你的需要进行修改。

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	~~学习如何使用表达式管理器的最佳方法是使用工作示例并根据你的需要进行修改。~~		= 简介 =

	你可以在下面找到一组样本调查，以演示（和测试）表达式管理器是如何用于增强你的调查。这些调查可以在安装目录下的docs/demosurveys文件夹中找到。		你可以在下面找到一组样本调查，以演示（和测试）表达式管理器是如何用于增强你的调查。这些调查可以在安装目录下的docs/demosurveys文件夹中找到。

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	~~= 简介 =~~		__TOC__

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	<languages />		<languages />

	~~__TOC__~~		<languages />

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	如果你对如何命名变量（SGQA与Qcodes）感到困惑，那么你并不孤单。虽然主要文档描述了[[~~ExpressionScript~~#Access to Variables\|如何编写Qcode变量名]]，但没有什么比在工作演示中看到它更好的了。此调查显示了如何使用表达式管理器访问问题属性和响应。		如果你对如何命名变量（SGQA与Qcodes）感到困惑，那么你并不孤单。虽然主要文档描述了[[Expression Manager#Access to Variables\|如何编写Qcode变量名]]，但没有什么比在工作演示中看到它更好的了。此调查显示了如何使用表达式管理器访问问题属性和响应。

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	如果你对如何命名变量（SGQA与Qcodes）感到困惑，那么你并不孤单。虽然主要文档描述了[[~~Expression Manager~~#Access to Variables\|如何编写Qcode变量名]]，但没有什么比在工作演示中看到它更好的了。此调查显示了如何使用表达式管理器访问问题属性和响应。		如果你对如何命名变量（SGQA与Qcodes）感到困惑，那么你并不孤单。虽然主要文档描述了[[ExpressionScript#Access to Variables\|如何编写Qcode变量名]]，但没有什么比在工作演示中看到它更好的了。此调查显示了如何使用表达式管理器访问问题属性和响应。


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	The ~~Expression Manager~~ ensures that only valid numbers can be entered into numeric fields. If you enter an invalid number, you will be warned that something is wrong (e.g., in the case of the fruity theme, the whole question is "red-ed").		The ExpressionScript ensures that only valid numbers can be entered into numeric fields. If you enter an invalid number, you will be warned that something is wrong (e.g., in the case of the fruity theme, the whole question is "red-ed").

	Note that the numeric values are always converted to using a period as the radix separator within the database. In this way, the statistical analyses will work appropriately.		Note that the numeric values are always converted to using a period as the radix separator within the database. In this way, the statistical analyses will work appropriately.
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	This survey shows how to ask a random subset of questions in a group. For example, show 5 random questions out of 10 questions located within a group.		This survey shows how to ask a random subset of questions in a group. For example, show 5 random questions out of 10 questions located within a group.

	The survey has one group containing 10 questions. All questions are assigned the same [[QS:Random_group\|randomization group name]]. As a result, they will be displayed in a random order on page load. Each question is given a relevance equation that the sum of the "[[~~Expression Manager~~#Access to Variables\|relevanceStatus]]" of all other questions in the group is less than the number of questions you want to show. Since [[~~Expression Manager~~#Access to Variables\|relevanceStatus]] is assigned as questions are rendered, this effectively totals the number of preceding questions.		The survey has one group containing 10 questions. All questions are assigned the same [[QS:Random_group\|randomization group name]]. As a result, they will be displayed in a random order on page load. Each question is given a relevance equation that the sum of the "[[ExpressionScript#Access to Variables\|relevanceStatus]]" of all other questions in the group is less than the number of questions you want to show. Since [[ExpressionScript#Access to Variables\|relevanceStatus]] is assigned as questions are rendered, this effectively totals the number of preceding questions.

	So, in our 5 out of 10 example, the equation for Q1 would be:		So, in our 5 out of 10 example, the equation for Q1 would be:

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	==~~Screenshots~~==		== 截图 ==

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	This question ensures that you enter the ages of your children in descending order by applying this validation equation:		This question ensures that you enter the ages of your children in descending order by applying this validation equation:

	<syntaxhighlight lang="php~~" enclose="div~~">q1_sq1 >= q1_sq2 && q1_sq2 >= q1_sq3 && q1_sq3 >= q1_sq4</syntaxhighlight>		<syntaxhighlight lang="php">q1_sq1 >= q1_sq2 && q1_sq2 >= q1_sq3 && q1_sq3 >= q1_sq4</syntaxhighlight>


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	In the below example, the validation ensures that no more than 3 questions are answered on any given row by applying this validation equation:		In the below example, the validation ensures that no more than 3 questions are answered on any given row by applying this validation equation:

	<syntaxhighlight lang="php~~" enclose="div~~">(sum(Test_A_1, Test_A_2, Test_A_3, Test_A_4, Test_A_5) <= 3) && (sum(Test_B_1, Test_B_2, Test_B_3, Test_B_4, Test_B_5) <= 3) && (sum(Test_C_1, Test_C_2, Test_C_3, Test_C_4, Test_C_5) <= 3)</syntaxhighlight>		<syntaxhighlight lang="php">(sum(Test_A_1, Test_A_2, Test_A_3, Test_A_4, Test_A_5) <= 3) && (sum(Test_B_1, Test_B_2, Test_B_3, Test_B_4, Test_B_5) <= 3) && (sum(Test_C_1, Test_C_2, Test_C_3, Test_C_4, Test_C_5) <= 3)</syntaxhighlight>

	You can also write this as follows, LimeSurvey automatically converting it at run-time to the above-listed expression.		You can also write this as follows, LimeSurvey automatically converting it at run-time to the above-listed expression.

	<syntaxhighlight lang="php~~" enclose="div~~">(sum(self.sq_A) <= 3) && (sum(self.sq_B) <= 3) && (sum(self.sq_C) <= 3)</syntaxhighlight>		<syntaxhighlight lang="php">(sum(self.sq_A) <= 3) && (sum(self.sq_B) <= 3) && (sum(self.sq_C) <= 3)</syntaxhighlight>


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	So, in our 5 out of 10 example, the equation for Q1 would be:		So, in our 5 out of 10 example, the equation for Q1 would be:

	<syntaxhighlight lang="php~~" enclose="div~~">sum(Q2.relevanceStatus, Q3.relevanceStatus, Q4.relevanceStatus, Q5.relevanceStatus, Q6.relevanceStatus, Q7.relevanceStatus, Q8.relevanceStatus, Q9.relevanceStatus, Q10.relevanceStatus) LT 5</syntaxhighlight>		<syntaxhighlight lang="php">sum(Q2.relevanceStatus, Q3.relevanceStatus, Q4.relevanceStatus, Q5.relevanceStatus, Q6.relevanceStatus, Q7.relevanceStatus, Q8.relevanceStatus, Q9.relevanceStatus, Q10.relevanceStatus) LT 5</syntaxhighlight>

	For Q2, it would be:		For Q2, it would be:

	<syntaxhighlight lang="php~~" enclose="div~~">sum(Q1.relevanceStatus, Q3.relevanceStatus, Q4.relevanceStatus, Q5.relevanceStatus, Q6.relevanceStatus, Q7.relevanceStatus, Q8.relevanceStatus, Q9.relevanceStatus, Q10.relevanceStatus) LT 5</syntaxhighlight>		<syntaxhighlight lang="php">sum(Q1.relevanceStatus, Q3.relevanceStatus, Q4.relevanceStatus, Q5.relevanceStatus, Q6.relevanceStatus, Q7.relevanceStatus, Q8.relevanceStatus, Q9.relevanceStatus, Q10.relevanceStatus) LT 5</syntaxhighlight>

	And so on...		And so on...