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Show the user an error message when no tables were extracted #425

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Show the user an error message when no tables were extracted #425

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51 changes: 30 additions & 21 deletions webapp/static/js/pdf_view.js
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Expand Up @@ -293,23 +293,29 @@ Tabula.Query = Backbone.Model.extend({
success: _.bind(function(resp) {
this.set('data', resp);

// this only needs to happen on the first select, when we don't know what the extraction method is yet
// (because it's set by the heuristic on the server-side).
// TODO: only execute it when one of the list_of_coords has guess or undefined as its extraction_method
_(_.zip(this.get('list_of_coords'), resp)).each(function(stuff, i){
var coord_set = stuff[0];
var resp_item = stuff[1];
if (stashed_selections.get(coord_set.selection_id)){
stashed_selections.get(coord_set.selection_id).
set('extraction_method', resp_item["extraction_method"]);
if (resp.length > 0) {
// this only needs to happen on the first select, when we don't know what the extraction method is yet
// (because it's set by the heuristic on the server-side).
// TODO: only execute it when one of the list_of_coords has guess or undefined as its extraction_method
_(_.zip(this.get('list_of_coords'), resp)).each(function(stuff, i){
var coord_set = stuff[0];
var resp_item = stuff[1];
if (stashed_selections.get(coord_set.selection_id)){
stashed_selections.get(coord_set.selection_id).
set('extraction_method', resp_item["extraction_method"]);
}
coord_set["extraction_method"] = resp_item["extraction_method"];
});

this.trigger("tabula:query-success");

if (options !== undefined && _.isFunction(options.success)){
Tabula.pdf_view.options.success(resp);
}
coord_set["extraction_method"] = resp_item["extraction_method"];
});

this.trigger("tabula:query-success");

if (options !== undefined && _.isFunction(options.success)){
Tabula.pdf_view.options.success(resp);
} else {
// no tables were extracted
var error_message = "No tables were extracted. Please try selecting a different extraction method from the sidebar.";
this.triggerQueryError(error_message, options);
}

}, this),
Expand All @@ -324,14 +330,17 @@ Tabula.Query = Backbone.Model.extend({
var info = error_html.find('#info').text().trim();
error_text = [summary, meta, info].join("<br />");
}
var debugging_text = "Tabula API version: " + Tabula.api_version + "\nFilename: " + Tabula.pdf_view.pdf_document.get('original_filename') + "\n" + error_text
this.set('error_message', debugging_text);
this.trigger("tabula:query-error");
if (options !== undefined && _.isFunction(options.error))
options.error(resp);
this.triggerQueryError(error_text, options);
}, this),
});
},
triggerQueryError: function(error_text, options){
var debugging_text = "Tabula API version: " + Tabula.api_version + "\nFilename: " + Tabula.pdf_view.pdf_document.get('original_filename') + "\n" + error_text
this.set('error_message', debugging_text);
this.trigger("tabula:query-error");
if (options !== undefined && _.isFunction(options.error))
options.error(resp);
},
setExtractionMethod: function(extractionMethod){
_(this.get('list_of_coords')).each(function(coord_set){ coord_set['extraction_method'] = extractionMethod; });
},
Expand Down