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<pre class="prettyprint lang-js"><span id='Ext-data-Field'>/**
</span> * @author Ed Spencer
- * @class Ext.data.Field
- * @extends Object
- *
- * <p>Fields are used to define what a Model is. They aren't instantiated directly - instead, when we create a class
- * that extends {@link Ext.data.Model}, it will automatically create a Field instance for each field configured in a
- * {@link Ext.data.Model Model}. For example, we might set up a model like this:</p>
- *
-<pre><code>
-Ext.define('User', {
- extend: 'Ext.data.Model',
- fields: [
- 'name', 'email',
- {name: 'age', type: 'int'},
- {name: 'gender', type: 'string', defaultValue: 'Unknown'}
- ]
-});
-</code></pre>
- *
- * <p>Four fields will have been created for the User Model - name, email, age and gender. Note that we specified a
- * couple of different formats here; if we only pass in the string name of the field (as with name and email), the
- * field is set up with the 'auto' type. It's as if we'd done this instead:</p>
- *
-<pre><code>
-Ext.define('User', {
- extend: 'Ext.data.Model',
- fields: [
- {name: 'name', type: 'auto'},
- {name: 'email', type: 'auto'},
- {name: 'age', type: 'int'},
- {name: 'gender', type: 'string', defaultValue: 'Unknown'}
- ]
-});
-</code></pre>
- *
- * <p><u>Types and conversion</u></p>
- *
- * <p>The {@link #type} is important - it's used to automatically convert data passed to the field into the correct
- * format. In our example above, the name and email fields used the 'auto' type and will just accept anything that is
- * passed into them. The 'age' field had an 'int' type however, so if we passed 25.4 this would be rounded to 25.</p>
- *
- * <p>Sometimes a simple type isn't enough, or we want to perform some processing when we load a Field's data. We can
- * do this using a {@link #convert} function. Here, we're going to create a new field based on another:</p>
- *
-<code><pre>
-Ext.define('User', {
- extend: 'Ext.data.Model',
- fields: [
- 'name', 'email',
- {name: 'age', type: 'int'},
- {name: 'gender', type: 'string', defaultValue: 'Unknown'},
-
- {
- name: 'firstName',
- convert: function(value, record) {
- var fullName = record.get('name'),
- splits = fullName.split(" "),
- firstName = splits[0];
-
- return firstName;
- }
- }
- ]
-});
-</code></pre>
- *
- * <p>Now when we create a new User, the firstName is populated automatically based on the name:</p>
- *
-<code><pre>
-var ed = Ext.ModelManager.create({name: 'Ed Spencer'}, 'User');
-
-console.log(ed.get('firstName')); //logs 'Ed', based on our convert function
-</code></pre>
- *
- * <p>In fact, if we log out all of the data inside ed, we'll see this:</p>
- *
-<code><pre>
-console.log(ed.data);
-
-//outputs this:
-{
- age: 0,
- email: "",
- firstName: "Ed",
- gender: "Unknown",
- name: "Ed Spencer"
-}
-</code></pre>
- *
- * <p>The age field has been given a default of zero because we made it an int type. As an auto field, email has
- * defaulted to an empty string. When we registered the User model we set gender's {@link #defaultValue} to 'Unknown'
- * so we see that now. Let's correct that and satisfy ourselves that the types work as we expect:</p>
- *
-<code><pre>
-ed.set('gender', 'Male');
-ed.get('gender'); //returns 'Male'
-
-ed.set('age', 25.4);
-ed.get('age'); //returns 25 - we wanted an int, not a float, so no decimal places allowed
-</code></pre>
- *
+ *
+ * Fields are used to define what a Model is. They aren't instantiated directly - instead, when we create a class that
+ * extends {@link Ext.data.Model}, it will automatically create a Field instance for each field configured in a {@link
+ * Ext.data.Model Model}. For example, we might set up a model like this:
+ *
+ * Ext.define('User', {
+ * extend: 'Ext.data.Model',
+ * fields: [
+ * 'name', 'email',
+ * {name: 'age', type: 'int'},
+ * {name: 'gender', type: 'string', defaultValue: 'Unknown'}
+ * ]
+ * });
+ *
+ * Four fields will have been created for the User Model - name, email, age and gender. Note that we specified a couple
+ * of different formats here; if we only pass in the string name of the field (as with name and email), the field is set
+ * up with the 'auto' type. It's as if we'd done this instead:
+ *
+ * Ext.define('User', {
+ * extend: 'Ext.data.Model',
+ * fields: [
+ * {name: 'name', type: 'auto'},
+ * {name: 'email', type: 'auto'},
+ * {name: 'age', type: 'int'},
+ * {name: 'gender', type: 'string', defaultValue: 'Unknown'}
+ * ]
+ * });
+ *
+ * # Types and conversion
+ *
+ * The {@link #type} is important - it's used to automatically convert data passed to the field into the correct format.
+ * In our example above, the name and email fields used the 'auto' type and will just accept anything that is passed
+ * into them. The 'age' field had an 'int' type however, so if we passed 25.4 this would be rounded to 25.
+ *
+ * Sometimes a simple type isn't enough, or we want to perform some processing when we load a Field's data. We can do
+ * this using a {@link #convert} function. Here, we're going to create a new field based on another:
+ *
+ * Ext.define('User', {
+ * extend: 'Ext.data.Model',
+ * fields: [
+ * 'name', 'email',
+ * {name: 'age', type: 'int'},
+ * {name: 'gender', type: 'string', defaultValue: 'Unknown'},
+ *
+ * {
+ * name: 'firstName',
+ * convert: function(value, record) {
+ * var fullName = record.get('name'),
+ * splits = fullName.split(" "),
+ * firstName = splits[0];
+ *
+ * return firstName;
+ * }
+ * }
+ * ]
+ * });
+ *
+ * Now when we create a new User, the firstName is populated automatically based on the name:
+ *
+ * var ed = Ext.create('User', {name: 'Ed Spencer'});
+ *
+ * console.log(ed.get('firstName')); //logs 'Ed', based on our convert function
+ *
+ * In fact, if we log out all of the data inside ed, we'll see this:
+ *
+ * console.log(ed.data);
+ *
+ * //outputs this:
+ * {
+ * age: 0,
+ * email: "",
+ * firstName: "Ed",
+ * gender: "Unknown",
+ * name: "Ed Spencer"
+ * }
+ *
+ * The age field has been given a default of zero because we made it an int type. As an auto field, email has defaulted
+ * to an empty string. When we registered the User model we set gender's {@link #defaultValue} to 'Unknown' so we see
+ * that now. Let's correct that and satisfy ourselves that the types work as we expect:
+ *
+ * ed.set('gender', 'Male');
+ * ed.get('gender'); //returns 'Male'
+ *
+ * ed.set('age', 25.4);
+ * ed.get('age'); //returns 25 - we wanted an int, not a float, so no decimal places allowed
*/
Ext.define('Ext.data.Field', {
requires: ['Ext.data.Types', 'Ext.data.SortTypes'],
<span id='Ext-data-Field-cfg-name'> /**
</span> * @cfg {String} name
- * The name by which the field is referenced within the Model. This is referenced by, for example,
- * the <code>dataIndex</code> property in column definition objects passed to {@link Ext.grid.property.HeaderContainer}.
- * <p>Note: In the simplest case, if no properties other than <code>name</code> are required, a field
- * definition may consist of just a String for the field name.</p>
+ *
+ * The name by which the field is referenced within the Model. This is referenced by, for example, the `dataIndex`
+ * property in column definition objects passed to {@link Ext.grid.property.HeaderContainer}.
+ *
+ * Note: In the simplest case, if no properties other than `name` are required, a field definition may consist of
+ * just a String for the field name.
*/
<span id='Ext-data-Field-cfg-type'> /**
-</span> * @cfg {Mixed} type
- * (Optional) The data type for automatic conversion from received data to the <i>stored</i> value if <code>{@link Ext.data.Field#convert convert}</code>
- * has not been specified. This may be specified as a string value. Possible values are
- * <div class="mdetail-params"><ul>
- * <li>auto (Default, implies no conversion)</li>
- * <li>string</li>
- * <li>int</li>
- * <li>float</li>
- * <li>boolean</li>
- * <li>date</li></ul></div>
- * <p>This may also be specified by referencing a member of the {@link Ext.data.Types} class.</p>
- * <p>Developers may create their own application-specific data types by defining new members of the
- * {@link Ext.data.Types} class.</p>
+</span> * @cfg {String/Object} type
+ *
+ * The data type for automatic conversion from received data to the *stored* value if
+ * `{@link Ext.data.Field#convert convert}` has not been specified. This may be specified as a string value.
+ * Possible values are
+ *
+ * - auto (Default, implies no conversion)
+ * - string
+ * - int
+ * - float
+ * - boolean
+ * - date
+ *
+ * This may also be specified by referencing a member of the {@link Ext.data.Types} class.
+ *
+ * Developers may create their own application-specific data types by defining new members of the {@link
+ * Ext.data.Types} class.
*/
<span id='Ext-data-Field-cfg-convert'> /**
</span> * @cfg {Function} convert
- * (Optional) A function which converts the value provided by the Reader into an object that will be stored
- * in the Model. It is passed the following parameters:<div class="mdetail-params"><ul>
- * <li><b>v</b> : Mixed<div class="sub-desc">The data value as read by the Reader, if undefined will use
- * the configured <code>{@link Ext.data.Field#defaultValue defaultValue}</code>.</div></li>
- * <li><b>rec</b> : Ext.data.Model<div class="sub-desc">The data object containing the Model as read so far by the
- * Reader. Note that the Model may not be fully populated at this point as the fields are read in the order that
- * they are defined in your {@link #fields} array.</div></li>
- * </ul></div>
- * <pre><code>
-// example of convert function
-function fullName(v, record){
- return record.name.last + ', ' + record.name.first;
-}
-
-function location(v, record){
- return !record.city ? '' : (record.city + ', ' + record.state);
-}
-
-Ext.define('Dude', {
- extend: 'Ext.data.Model',
- fields: [
- {name: 'fullname', convert: fullName},
- {name: 'firstname', mapping: 'name.first'},
- {name: 'lastname', mapping: 'name.last'},
- {name: 'city', defaultValue: 'homeless'},
- 'state',
- {name: 'location', convert: location}
- ]
-});
-
-// create the data store
-var store = new Ext.data.Store({
- reader: {
- type: 'json',
- model: 'Dude',
- idProperty: 'key',
- root: 'daRoot',
- totalProperty: 'total'
- }
-});
-
-var myData = [
- { key: 1,
- name: { first: 'Fat', last: 'Albert' }
- // notice no city, state provided in data object
- },
- { key: 2,
- name: { first: 'Barney', last: 'Rubble' },
- city: 'Bedrock', state: 'Stoneridge'
- },
- { key: 3,
- name: { first: 'Cliff', last: 'Claven' },
- city: 'Boston', state: 'MA'
- }
-];
- * </code></pre>
+ *
+ * A function which converts the value provided by the Reader into an object that will be stored in the Model.
+ * It is passed the following parameters:
+ *
+ * - **v** : Mixed
+ *
+ * The data value as read by the Reader, if undefined will use the configured `{@link Ext.data.Field#defaultValue
+ * defaultValue}`.
+ *
+ * - **rec** : Ext.data.Model
+ *
+ * The data object containing the Model as read so far by the Reader. Note that the Model may not be fully populated
+ * at this point as the fields are read in the order that they are defined in your
+ * {@link Ext.data.Model#fields fields} array.
+ *
+ * Example of convert functions:
+ *
+ * function fullName(v, record){
+ * return record.name.last + ', ' + record.name.first;
+ * }
+ *
+ * function location(v, record){
+ * return !record.city ? '' : (record.city + ', ' + record.state);
+ * }
+ *
+ * Ext.define('Dude', {
+ * extend: 'Ext.data.Model',
+ * fields: [
+ * {name: 'fullname', convert: fullName},
+ * {name: 'firstname', mapping: 'name.first'},
+ * {name: 'lastname', mapping: 'name.last'},
+ * {name: 'city', defaultValue: 'homeless'},
+ * 'state',
+ * {name: 'location', convert: location}
+ * ]
+ * });
+ *
+ * // create the data store
+ * var store = Ext.create('Ext.data.Store', {
+ * reader: {
+ * type: 'json',
+ * model: 'Dude',
+ * idProperty: 'key',
+ * root: 'daRoot',
+ * totalProperty: 'total'
+ * }
+ * });
+ *
+ * var myData = [
+ * { key: 1,
+ * name: { first: 'Fat', last: 'Albert' }
+ * // notice no city, state provided in data object
+ * },
+ * { key: 2,
+ * name: { first: 'Barney', last: 'Rubble' },
+ * city: 'Bedrock', state: 'Stoneridge'
+ * },
+ * { key: 3,
+ * name: { first: 'Cliff', last: 'Claven' },
+ * city: 'Boston', state: 'MA'
+ * }
+ * ];
*/
+
<span id='Ext-data-Field-cfg-dateFormat'> /**
</span> * @cfg {String} dateFormat
- * <p>(Optional) Used when converting received data into a Date when the {@link #type} is specified as <code>"date"</code>.</p>
- * <p>A format string for the {@link Ext.Date#parse Ext.Date.parse} function, or "timestamp" if the
- * value provided by the Reader is a UNIX timestamp, or "time" if the value provided by the Reader is a
- * javascript millisecond timestamp. See {@link Ext.Date}</p>
+ *
+ * Used when converting received data into a Date when the {@link #type} is specified as `"date"`.
+ *
+ * A format string for the {@link Ext.Date#parse Ext.Date.parse} function, or "timestamp" if the value provided by
+ * the Reader is a UNIX timestamp, or "time" if the value provided by the Reader is a javascript millisecond
+ * timestamp. See {@link Ext.Date}.
*/
dateFormat: null,
<span id='Ext-data-Field-cfg-useNull'> /**
</span> * @cfg {Boolean} useNull
- * <p>(Optional) Use when converting received data into a Number type (either int or float). If the value cannot be parsed,
- * null will be used if useNull is true, otherwise the value will be 0. Defaults to <tt>false</tt>
+ *
+ * Use when converting received data into a Number type (either int or float). If the value cannot be
+ * parsed, null will be used if useNull is true, otherwise the value will be 0. Defaults to false.
*/
useNull: false,
<span id='Ext-data-Field-cfg-defaultValue'> /**
-</span> * @cfg {Mixed} defaultValue
- * (Optional) The default value used <b>when a Model is being created by a {@link Ext.data.reader.Reader Reader}</b>
- * when the item referenced by the <code>{@link Ext.data.Field#mapping mapping}</code> does not exist in the data
- * object (i.e. undefined). (defaults to "")
+</span> * @cfg {Object} defaultValue
+ *
+ * The default value used **when a Model is being created by a {@link Ext.data.reader.Reader Reader}**
+ * when the item referenced by the `{@link Ext.data.Field#mapping mapping}` does not exist in the data object
+ * (i.e. undefined). Defaults to "".
*/
defaultValue: "",
+
<span id='Ext-data-Field-cfg-mapping'> /**
</span> * @cfg {String/Number} mapping
- * <p>(Optional) A path expression for use by the {@link Ext.data.reader.Reader} implementation
- * that is creating the {@link Ext.data.Model Model} to extract the Field value from the data object.
- * If the path expression is the same as the field name, the mapping may be omitted.</p>
- * <p>The form of the mapping expression depends on the Reader being used.</p>
- * <div class="mdetail-params"><ul>
- * <li>{@link Ext.data.reader.Json}<div class="sub-desc">The mapping is a string containing the javascript
- * expression to reference the data from an element of the data item's {@link Ext.data.reader.Json#root root} Array. Defaults to the field name.</div></li>
- * <li>{@link Ext.data.reader.Xml}<div class="sub-desc">The mapping is an {@link Ext.DomQuery} path to the data
- * item relative to the DOM element that represents the {@link Ext.data.reader.Xml#record record}. Defaults to the field name.</div></li>
- * <li>{@link Ext.data.reader.Array}<div class="sub-desc">The mapping is a number indicating the Array index
- * of the field's value. Defaults to the field specification's Array position.</div></li>
- * </ul></div>
- * <p>If a more complex value extraction strategy is required, then configure the Field with a {@link #convert}
+ *
+ * (Optional) A path expression for use by the {@link Ext.data.reader.Reader} implementation that is creating the
+ * {@link Ext.data.Model Model} to extract the Field value from the data object. If the path expression is the same
+ * as the field name, the mapping may be omitted.
+ *
+ * The form of the mapping expression depends on the Reader being used.
+ *
+ * - {@link Ext.data.reader.Json}
+ *
+ * The mapping is a string containing the javascript expression to reference the data from an element of the data
+ * item's {@link Ext.data.reader.Json#root root} Array. Defaults to the field name.
+ *
+ * - {@link Ext.data.reader.Xml}
+ *
+ * The mapping is an {@link Ext.DomQuery} path to the data item relative to the DOM element that represents the
+ * {@link Ext.data.reader.Xml#record record}. Defaults to the field name.
+ *
+ * - {@link Ext.data.reader.Array}
+ *
+ * The mapping is a number indicating the Array index of the field's value. Defaults to the field specification's
+ * Array position.
+ *
+ * If a more complex value extraction strategy is required, then configure the Field with a {@link #convert}
* function. This is passed the whole row object, and may interrogate it in whatever way is necessary in order to
- * return the desired data.</p>
+ * return the desired data.
*/
mapping: null,
+
<span id='Ext-data-Field-cfg-sortType'> /**
</span> * @cfg {Function} sortType
- * (Optional) A function which converts a Field's value to a comparable value in order to ensure
- * correct sort ordering. Predefined functions are provided in {@link Ext.data.SortTypes}. A custom
- * sort example:<pre><code>
-// current sort after sort we want
-// +-+------+ +-+------+
-// |1|First | |1|First |
-// |2|Last | |3|Second|
-// |3|Second| |2|Last |
-// +-+------+ +-+------+
-
-sortType: function(value) {
- switch (value.toLowerCase()) // native toLowerCase():
- {
- case 'first': return 1;
- case 'second': return 2;
- default: return 3;
- }
-}
- * </code></pre>
+ *
+ * A function which converts a Field's value to a comparable value in order to ensure correct sort ordering.
+ * Predefined functions are provided in {@link Ext.data.SortTypes}. A custom sort example:
+ *
+ * // current sort after sort we want
+ * // +-+------+ +-+------+
+ * // |1|First | |1|First |
+ * // |2|Last | |3|Second|
+ * // |3|Second| |2|Last |
+ * // +-+------+ +-+------+
+ *
+ * sortType: function(value) {
+ * switch (value.toLowerCase()) // native toLowerCase():
+ * {
+ * case 'first': return 1;
+ * case 'second': return 2;
+ * default: return 3;
+ * }
+ * }
*/
sortType : null,
+
<span id='Ext-data-Field-cfg-sortDir'> /**
</span> * @cfg {String} sortDir
- * (Optional) Initial direction to sort (<code>"ASC"</code> or <code>"DESC"</code>). Defaults to
- * <code>"ASC"</code>.
+ *
+ * Initial direction to sort (`"ASC"` or `"DESC"`). Defaults to `"ASC"`.
*/
sortDir : "ASC",
+
<span id='Ext-data-Field-cfg-allowBlank'> /**
</span> * @cfg {Boolean} allowBlank
* @private
- * (Optional) Used for validating a {@link Ext.data.Model model}, defaults to <code>true</code>.
- * An empty value here will cause {@link Ext.data.Model}.{@link Ext.data.Model#isValid isValid}
- * to evaluate to <code>false</code>.
+ *
+ * Used for validating a {@link Ext.data.Model model}. Defaults to true. An empty value here will cause
+ * {@link Ext.data.Model}.{@link Ext.data.Model#isValid isValid} to evaluate to false.
*/
allowBlank : true,
-
+
<span id='Ext-data-Field-cfg-persist'> /**
</span> * @cfg {Boolean} persist
- * False to exclude this field from the {@link Ext.data.Model#modified} fields in a model. This
- * will also exclude the field from being written using a {@link Ext.data.writer.Writer}. This option
- * is useful when model fields are used to keep state on the client but do not need to be persisted
- * to the server. Defaults to <tt>true</tt>.
+ *
+ * False to exclude this field from the {@link Ext.data.Model#modified} fields in a model. This will also exclude
+ * the field from being written using a {@link Ext.data.writer.Writer}. This option is useful when model fields are
+ * used to keep state on the client but do not need to be persisted to the server. Defaults to true.
*/
persist: true
});
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