对mongodb和golang来说很新.我有一个名为"myplace"的集合它有以下文件place_name,city,latitude,longitude.我的问题是用户在某个地方并搜索附近的地方.如何查询mongodb以查找附近的位置.也在golang.
我的文档结构
{
"_id" : ObjectId("544a2147785b707b340ed6c7"),
"latitude" : 12.36547,
"longitude" : 1.235689,
"place_name" : "some_place",
"city" : "Some city"
}
提前致谢
如何使用jQuery Validation插件验证正则表达式？在这段代码中,我们可以使用一个jQuery插件"jQuery Validation"插件验证表单,但我不知道使用此插件验证正则表达式.
<!DOCtype html>
<html>
<script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.11.1/jquery.validate.js"></script>
<script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.11.1/jquery.validate.min.js"></script>
<script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.11.1/additional-methods.js"></script>
<script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.11.1/additional-methods.min.js"></script>
<body>
<form method="post" name="signup_form" enctype="multipart/form-data">
<table>
<tr><td>First Name:</td><td><input type="text" name="first_name" placeholder="First name" required><span> *</span></td></tr>
<tr><td>Middle Name:</td><td><input type="text" name="middle_name" placeholder="Middle Name"></td></tr>
<tr><td>Last Name:</td><td><input type="text" name="last_name" placeholder="Last Name" required><span> *</span></td></tr>
<tr><td>Username:</td><td><input type="text" name="username" placeholder="Username" required><span> *</span></td></tr>
<tr><td>Password:</td><td><input id="password1" type = "password" name="password" required/><span> *</span></td></tr>
<tr><td>Re-Enter Password:</td><td><input class="left" id="password_again" type = "password" name="password_again" required/><span> *</span></td></tr>
<tr><td>Email:</td><td> <input id="email" type="email" name="email" required/><span> *</span></td></tr>
<tr><td>Gender:</td><td><input type="radio" name="gender" …