Changes between Version 3 and Version 4 of Trac Reports
- Timestamp:
- Jun 21, 2015, 12:16:11 PM (9 years ago)
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Trac Reports
v3 v4 16 16 }}} 17 17 ''This will make the query module the default handler for the “View Tickets” navigation item. We encourage you to try this configuration and report back what kind of features of reports you are missing, if any.'' 18 19 18 20 19 A report consists of these basic parts: … … 70 69 71 70 ''Creating a custom report requires a comfortable knowledge of SQL.'' 71 72 '''Note that you need to set up [TracPermissions#Reports permissions] in order to see the buttons for adding or editing reports.''' 72 73 73 74 A report is basically a single named SQL query, executed and presented by … … 108 109 }}} 109 110 110 ---111 111 112 112 == Advanced Reports: Dynamic Variables == … … 147 147 }}} 148 148 149 150 ----151 149 152 150 … … 156 154 specialized SQL statements to control the output of the Trac report engine. 157 155 158 == Special Columns==156 === Special Columns === 159 157 To format reports, TracReports looks for 'magic' column names in the query 160 158 result. These 'magic' names are processed and affect the layout and style of the … … 165 163 * '''id''' — same as '''ticket''' above when '''realm''' is not set 166 164 * '''realm''' — together with '''id''', can be used to create links to other resources than tickets (e.g. a realm of ''wiki'' and an ''id'' to a page name will create a link to that wiki page) 165 - for some kind of resources, it may be necessary to specify their ''parent'' resources (e.g. for ''changeset'', which ''repos'') and this can be achieved using the '''parent_realm''' and '''parent_id''' columns 167 166 * '''created, modified, date, time''' — Format cell as a date and/or time. 168 167 * '''description''' — Ticket description field, parsed through the wiki engine. … … 194 193 </div> 195 194 }}} 196 * '''`__style__`''' — A custom CSS style expression to use for the current row. 195 * '''`__style__`''' — A custom CSS style expression to use on the `<tr>` element of the current row. 196 * '''`__class__`''' — Zero or more space-separated CSS class names to be set on the `<tr>` element of the current row. These classes are added to the class name derived from `__color__` and the odd / even indicator. 197 197 198 198 '''Example:''' ''List active tickets, grouped by milestone, group header linked to milestone page, colored by priority'' … … 217 217 also possible to create multi-line report entries. 218 218 219 * '''`column_`''' — ''Break row after this''. By appending an underscore ('_') to the column name, the remaining columns will be becontinued on a second line.219 * '''`column_`''' — ''Break row after this''. By appending an underscore ('_') to the column name, the remaining columns will be continued on a second line. 220 220 221 221 * '''`_column_`''' — ''Full row''. By adding an underscore ('_') both at the beginning and the end of a column name, the data will be shown on a separate row. … … 249 249 If you have tickets in the database ''before'' you declare the extra fields in trac.ini, there will be no associated data in the ticket_custom table. To get around this, use SQL's "LEFT OUTER JOIN" clauses. See [trac:TracIniReportCustomFieldSample TracIniReportCustomFieldSample] for some examples. 250 250 251 '''Note that you need to set up permissions in order to see the buttons for adding or editing reports.''' 251 === A note about SQL rewriting #rewriting 252 253 Beyond the relatively trivial replacement of dynamic variables, the SQL query is also altered in order to support two features of the reports: 254 1. [#sort-order changing the sort order] 255 2. pagination support (limitation of the number of result rows displayed on each page) 256 In order to support the first feature, the sort column is inserted in the `ORDER BY` clause in the first position or in the second position if a `__group__` column is specified (an `ORDER BY` clause is created if needed). In order to support pagination, a `LIMIT ... OFFSET ...` clause is appended. 257 The query might be too complex for the automatic rewrite to work correctly, resulting in an erroneous query. In this case you still have the possibility to control exactly how the rewrite is done by manually inserting the following tokens: 258 - `@SORT_COLUMN@`, the place where the name of the selected sort column will be inserted, 259 - `@LIMIT_OFFSET@`, the place where the pagination support clause will be added 260 Note that if you write them after an SQL comment, `--`, you'll effectively disable rewriting if this is what you want! 261 262 Let's take an example, consider the following SQL query: 263 {{{ 264 -- ## 4: Assigned, Active Tickets by Owner ## -- 265 266 -- 267 -- List assigned tickets, group by ticket owner, sorted by priority. 268 -- 269 270 SELECT p.value AS __color__, 271 owner AS __group__, 272 id AS ticket, summary, component, milestone, t.type AS type, severity, time AS created, 273 changetime AS _changetime, description AS _description, 274 reporter AS _reporter 275 FROM ticket t,enum p 276 WHERE status = 'assigned' 277 AND p.name=t.priority AND p.type='priority' 278 ORDER BY __group__, p.value, severity, time 279 }}} 280 281 The automatic rewrite will be the following (4 rows per page, page 2, sorted by `component`): 282 {{{ 283 SELECT p.value AS __color__, 284 owner AS __group__, 285 id AS ticket, summary, component, milestone, t.type AS type, severity, time AS created, 286 changetime AS _changetime, description AS _description, 287 reporter AS _reporter 288 FROM ticket t,enum p 289 WHERE status = 'assigned' 290 AND p.name=t.priority AND p.type='priority' 291 ORDER BY __group__ ASC, `component` ASC, __group__, p.value, severity, time 292 LIMIT 4 OFFSET 4 293 }}} 294 295 The equivalent SQL query with the rewrite tokens would have been: 296 {{{ 297 SELECT p.value AS __color__, 298 owner AS __group__, 299 id AS ticket, summary, component, milestone, t.type AS type, severity, time AS created, 300 changetime AS _changetime, description AS _description, 301 reporter AS _reporter 302 FROM ticket t,enum p 303 WHERE status = 'assigned' 304 AND p.name=t.priority AND p.type='priority' 305 ORDER BY __group__, @SORT_COLUMN@, p.value, severity, time 306 @LIMIT_OFFSET@ 307 }}} 308 309 If you want to always sort first by priority and only then by the user selected sort column, simply use the following `ORDER BY` clause: 310 {{{ 311 ORDER BY __group__, p.value, @SORT_COLUMN@, severity, time 312 }}} 252 313 253 314 ----
