| 174 | The next step would be to provide a form to select the first and the last date of the interval. This would look like that: |
| 175 | |
| 176 | {{{ |
| 177 | if r.representation == "html": |
| 178 | |
| 179 | # Filter form |
| 180 | form = FORM( |
| 181 | TABLE( |
| 182 | TR( |
| 183 | T("Date from:"), |
| 184 | INPUT(_type="text", _name="date_from", _class="date", _value=datetime.now().date(), requires=IS_DATE()), |
| 185 | T("until:"), |
| 186 | INPUT(_type="text", _name="date_until", _class="date", _value=datetime.now().date(), requires=IS_DATE()) |
| 187 | ) |
| 188 | ) |
| 189 | ) |
| 190 | |
| 191 | output = dict(form=form) |
| 192 | |
| 193 | if form.accepts(request.vars, session, keepvalues=True): |
| 194 | # Processing of the form data goes here |
| 195 | |
| 196 | return output |
| 197 | |
| 198 | }}} |
| 199 | |
| 200 | From this, we need to process the form data into two dates. We use {{{datetime}}} for that: |
| 201 | |
| 202 | {{{ |
| 203 | if form.accepts(request.vars, session, keepvalues=True): |
| 204 | |
| 205 | from datetime import date, datetime, time |
| 206 | |
| 207 | # Date from |
| 208 | if form.vars.date_from: |
| 209 | from = datetime.combine(form.vars.date_from, time(0,0,0)) |
| 210 | |
| 211 | # Date until |
| 212 | if form.vars.date_until: |
| 213 | until = datetime.combine(form.vars.date_until+timedelta(days=1), time(0,0,0)) |
| 214 | |
| 215 | }}} |
| 216 | |
| 217 | To select the corresponding records, we need to extend our query: |
| 218 | |
| 219 | {{{ |
| 220 | if form.accepts(request.vars, session, keepvalues=True): |
| 221 | |
| 222 | # Get the initial query from the resource |
| 223 | # => this implements authorisation as well as URL queries |
| 224 | resource = r.resource |
| 225 | table = resource.table |
| 226 | filter = resource.get_query() |
| 227 | |
| 228 | from datetime import date, datetime, time |
| 229 | |
| 230 | # Date from |
| 231 | if form.vars.date_from: |
| 232 | from = datetime.combine(form.vars.date_from, time(0,0,0)) |
| 233 | date_query = (table.timestmp >= from) |
| 234 | |
| 235 | # Date until |
| 236 | if form.vars.date_until: |
| 237 | until = datetime.combine(form.vars.date_until+timedelta(days=1), time(0,0,0)) |
| 238 | q = (table.timetmp <= until) |
| 239 | if date_query: |
| 240 | date_query = date_query & q |
| 241 | else: |
| 242 | date_query = q |
| 243 | |
| 244 | # Add our filter and rebuild the resource query |
| 245 | filter = filter & date_query |
| 246 | resource.build_query(filter=filter) |
| 247 | |
| 248 | }}} |
| 249 | |
| 250 | From there, it is easy to select the sum of the "cost" field: |
| 251 | |
| 252 | {{{ |
| 253 | if form.accepts(request.vars, session, keepvalues=True): |
| 254 | |
| 255 | # Get the initial query from the resource |
| 256 | # => this implements authorisation as well as URL queries |
| 257 | resource = r.resource |
| 258 | table = resource.table |
| 259 | filter = resource.get_query() |
| 260 | |
| 261 | from datetime import date, datetime, time |
| 262 | |
| 263 | # Date from |
| 264 | if form.vars.date_from: |
| 265 | from = datetime.combine(form.vars.date_from, time(0,0,0)) |
| 266 | date_query = (table.timestmp >= from) |
| 267 | |
| 268 | # Date until |
| 269 | if form.vars.date_until: |
| 270 | until = datetime.combine(form.vars.date_until+timedelta(days=1), time(0,0,0)) |
| 271 | q = (table.timetmp <= until) |
| 272 | if date_query: |
| 273 | date_query = date_query & q |
| 274 | else: |
| 275 | date_query = q |
| 276 | |
| 277 | # Add our filter and rebuild the resource query |
| 278 | filter = filter & date_query |
| 279 | resource.build_query(filter=filter) |
| 280 | |
| 281 | # Get the total costs |
| 282 | costs = table.costs.sum() |
| 283 | total = db(query).select(costs) |
| 284 | |
| 285 | # Build the result string |
| 286 | result = "%s: %s" % (T("The total costs of the selected projects are"), total) |
| 287 | |
| 288 | output.update(result=result) |
| 289 | }}} |
| 290 | |
| 291 | Done with the method handler! Here at a glance: |
| 292 | |
| 293 | {{{ |
| 294 | |
| 295 | def s3_xxx_yyy_report(r, **attr): |
| 296 | |
| 297 | if r.representation == "html": |
| 298 | |
| 299 | # Filter form |
| 300 | form = FORM( |
| 301 | TABLE( |
| 302 | TR( |
| 303 | T("Date from:"), |
| 304 | INPUT(_type="text", _name="date_from", _class="date", _value=datetime.now().date(), requires=IS_DATE()), |
| 305 | T("until:"), |
| 306 | INPUT(_type="text", _name="date_until", _class="date", _value=datetime.now().date(), requires=IS_DATE()) |
| 307 | ) |
| 308 | ) |
| 309 | ) |
| 310 | |
| 311 | output = dict(form=form) |
| 312 | |
| 313 | if form.accepts(request.vars, session, keepvalues=True): |
| 314 | |
| 315 | # Get the initial query from the resource |
| 316 | # => this implements authorisation as well as URL queries |
| 317 | resource = r.resource |
| 318 | table = resource.table |
| 319 | filter = resource.get_query() |
| 320 | |
| 321 | from datetime import date, datetime, time |
| 322 | |
| 323 | # Date from |
| 324 | if form.vars.date_from: |
| 325 | from = datetime.combine(form.vars.date_from, time(0,0,0)) |
| 326 | date_query = (table.timestmp >= from) |
| 327 | |
| 328 | # Date until |
| 329 | if form.vars.date_until: |
| 330 | until = datetime.combine(form.vars.date_until+timedelta(days=1), time(0,0,0)) |
| 331 | q = (table.timetmp <= until) |
| 332 | if date_query: |
| 333 | date_query = date_query & q |
| 334 | else: |
| 335 | date_query = q |
| 336 | |
| 337 | # Add our filter and rebuild the resource query |
| 338 | filter = filter & date_query |
| 339 | resource.build_query(filter=filter) |
| 340 | |
| 341 | # Get the total costs |
| 342 | costs = table.costs.sum() |
| 343 | total = db(query).select(costs) |
| 344 | |
| 345 | # Build the result string |
| 346 | result = "%s: %s" % (T("The total costs of the selected projects are"), total) |
| 347 | |
| 348 | output.update(result=result) |
| 349 | |
| 350 | # Select the corresponding view: |
| 351 | response.view = "xxx/report.html" |
| 352 | |
| 353 | else: |
| 354 | raise HTTP(501, body=s3xrc.ERROR.BAD_FORMAT) |
| 355 | |
| 356 | return output |
| 357 | |
| 358 | s3xrc.model.set_method("xxx", "yyy", method="report", action=s3_xxx_yyy_report) |
| 359 | }}} |
| 360 | |
| 361 | We have added a line to raise an HTTP error in case an unsupported format gets requested, and added a line to select a proper view template "xxx/report.html", which would look like that: |
| 362 | |
| 363 | {{{ |
| 364 | {{extend 'layout.html'}} |
| 365 | <div class='form-container'> |
| 366 | {{try:}}{{=form}}{{except:}}{{pass}} |
| 367 | </div> |
| 368 | <div id='table-container'> |
| 369 | {{try:}}{{=result}}{{except:}}{{pass}} |
| 370 | </div> |
| 371 | }}} |
| 372 | |
| 373 | ...and that's all. |
| 374 | |